WIP: simcom2rtp bridge, interfacing SIMcom audio over USB to RTP

Change-Id: Id3f8633fae8881c2168d61732371e65eaff140ad
use osmo_fd_setup() whenever applicable
2025-11-01 20:43:47 +00:00 · 2020-10-19 13:31:40 +02:00 · 2020-10-19 13:31:40 +02:00
74 changed files with 2209 additions and 4416 deletions
--- a/.clang-format
+++ b/.clang-format
@@ -1,118 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-#
-# clang-format configuration file. Intended for clang-format >= 4.
-#
-# For more information, see:
-#
-#   Documentation/process/clang-format.rst
-#   https://clang.llvm.org/docs/ClangFormat.html
-#   https://clang.llvm.org/docs/ClangFormatStyleOptions.html
-#
---
-AccessModifierOffset: -4
-AlignAfterOpenBracket: Align
-AlignConsecutiveAssignments: false
-AlignConsecutiveDeclarations: false
-#AlignEscapedNewlines: Left # Unknown to clang-format-4.0
-AlignOperands: true
-AlignTrailingComments: false
-AllowAllParametersOfDeclarationOnNextLine: false
-AllowShortBlocksOnASingleLine: false
-AllowShortCaseLabelsOnASingleLine: false
-AllowShortFunctionsOnASingleLine: None
-AllowShortIfStatementsOnASingleLine: false
-AllowShortLoopsOnASingleLine: false
-AlwaysBreakAfterDefinitionReturnType: None
-AlwaysBreakAfterReturnType: None
-AlwaysBreakBeforeMultilineStrings: false
-AlwaysBreakTemplateDeclarations: false
-BinPackArguments: true
-BinPackParameters: true
-BraceWrapping:
-  AfterClass: false
-  AfterControlStatement: false
-  AfterEnum: false
-  AfterFunction: true
-  AfterNamespace: true
-  AfterObjCDeclaration: false
-  AfterStruct: false
-  AfterUnion: false
-  #AfterExternBlock: false # Unknown to clang-format-5.0
-  BeforeCatch: false
-  BeforeElse: false
-  IndentBraces: false
-  #SplitEmptyFunction: true # Unknown to clang-format-4.0
-  #SplitEmptyRecord: true # Unknown to clang-format-4.0
-  #SplitEmptyNamespace: true # Unknown to clang-format-4.0
-BreakBeforeBinaryOperators: None
-BreakBeforeBraces: Custom
-#BreakBeforeInheritanceComma: false # Unknown to clang-format-4.0
-BreakBeforeTernaryOperators: false
-BreakConstructorInitializersBeforeComma: false
-#BreakConstructorInitializers: BeforeComma # Unknown to clang-format-4.0
-BreakAfterJavaFieldAnnotations: false
-BreakStringLiterals: false
-ColumnLimit: 120
-CommentPragmas: '^ IWYU pragma:'
-#CompactNamespaces: false # Unknown to clang-format-4.0
-ConstructorInitializerAllOnOneLineOrOnePerLine: false
-ConstructorInitializerIndentWidth: 8
-ContinuationIndentWidth: 8
-Cpp11BracedListStyle: false
-DerivePointerAlignment: false
-DisableFormat: false
-ExperimentalAutoDetectBinPacking: false
-#FixNamespaceComments: false # Unknown to clang-format-4.0
-
-#IncludeBlocks: Preserve # Unknown to clang-format-5.0
-IncludeCategories:
-  - Regex: '.*'
-    Priority: 1
-IncludeIsMainRegex: '(Test)?$'
-IndentCaseLabels: false
-#IndentPPDirectives: None # Unknown to clang-format-5.0
-IndentWidth: 8
-IndentWrappedFunctionNames: false
-JavaScriptQuotes: Leave
-JavaScriptWrapImports: true
-KeepEmptyLinesAtTheStartOfBlocks: false
-MacroBlockBegin: ''
-MacroBlockEnd: ''
-MaxEmptyLinesToKeep: 1
-NamespaceIndentation: None
-#ObjCBinPackProtocolList: Auto # Unknown to clang-format-5.0
-ObjCBlockIndentWidth: 8
-ObjCSpaceAfterProperty: true
-ObjCSpaceBeforeProtocolList: true
-
-# Taken from git's rules
-#PenaltyBreakAssignment: 10 # Unknown to clang-format-4.0
-PenaltyBreakBeforeFirstCallParameter: 30
-PenaltyBreakComment: 10
-PenaltyBreakFirstLessLess: 0
-PenaltyBreakString: 10
-PenaltyExcessCharacter: 100
-PenaltyReturnTypeOnItsOwnLine: 60
-
-PointerAlignment: Right
-ReflowComments: false
-SortIncludes: false
-#SortUsingDeclarations: false # Unknown to clang-format-4.0
-SpaceAfterCStyleCast: false
-SpaceAfterTemplateKeyword: true
-SpaceBeforeAssignmentOperators: true
-#SpaceBeforeCtorInitializerColon: true # Unknown to clang-format-5.0
-#SpaceBeforeInheritanceColon: true # Unknown to clang-format-5.0
-SpaceBeforeParens: ControlStatements
-#SpaceBeforeRangeBasedForLoopColon: true # Unknown to clang-format-5.0
-SpaceInEmptyParentheses: false
-SpacesBeforeTrailingComments: 1
-SpacesInAngles: false
-SpacesInContainerLiterals: false
-SpacesInCStyleCastParentheses: false
-SpacesInParentheses: false
-SpacesInSquareBrackets: false
-Standard: Cpp03
-TabWidth: 8
-UseTab: Always
-...
--- a/.gitignore
+++ b/.gitignore
@@ -16,7 +16,6 @@ src/osmo-mgw/osmo-mgw
 *.gcda
 *.gcno
 *.pc
-*~

 #configure
 aclocal.m4
@@ -64,8 +63,3 @@ doc/manuals/common
 doc/manuals/build

 contrib/osmo-mgw.spec
-
-#vs code
-.cache
-.vscode
-
--- a/3
+++ b/3
@@ -24,4 +24,5 @@
 # If any interfaces have been removed or changed since the last public release, a=0.
 #
 #library		what		description / commit summary line
-libosmogsm              >1.6.0          use of iuup.h (libosmocore.git Ib21cee2e30bf83dff4e167f79541796007af9845)
+osmo-mgw        update osmo-gsm-manuals dependency to > 0.3.0 for vty_cpu_sched.adoc include
+libosmo-mgcp-client     mgcp_response, mgcp_conn_peer   struct size change, breaks ABI
--- a/configure.ac
+++ b/configure.ac
@@ -9,8 +9,6 @@ AC_CONFIG_AUX_DIR([.])
 AM_INIT_AUTOMAKE([dist-bzip2])
 AC_CONFIG_TESTDIR(tests)

-CFLAGS="$CFLAGS -std=gnu11"
-
 dnl kernel style compile messages
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])

@@ -36,6 +34,11 @@ if test "x$PKG_CONFIG_INSTALLED" = "xno"; then
 fi
 PKG_PROG_PKG_CONFIG([0.20])

+dnl check for AX_CHECK_COMPILE_FLAG
+m4_ifdef([AX_CHECK_COMPILE_FLAG], [], [
+	AC_MSG_ERROR([Please install autoconf-archive; re-run 'autoreconf -fi' for it to take effect.])
+	])
+
 dnl checks for libraries
 AC_SEARCH_LIBS([dlopen], [dl dld], [LIBRARY_DL="$LIBS";LIBS=""])
 AC_SUBST(LIBRARY_DL)
@@ -44,16 +47,13 @@ AC_SEARCH_LIBS([dlsym], [dl dld], [LIBRARY_DLSYM="$LIBS";LIBS=""])
 AC_SUBST(LIBRARY_DLSYM)


-PKG_CHECK_MODULES(LIBOSMOCORE, libosmocore >= 1.6.0)
-PKG_CHECK_MODULES(LIBOSMOGSM, libosmogsm >= 1.6.0)
-PKG_CHECK_MODULES(LIBOSMOCTRL, libosmoctrl >= 1.6.0)
-PKG_CHECK_MODULES(LIBOSMOVTY, libosmovty >= 1.6.0)
-PKG_CHECK_MODULES(LIBOSMONETIF, libosmo-netif >= 1.1.0)
-PKG_CHECK_MODULES(LIBOSMOABIS, libosmoabis >= 1.2.0)
-PKG_CHECK_MODULES(LIBOSMOTRAU, libosmotrau >= 1.2.0)
-
-CFLAGS="$CFLAGS -pthread"
-LDFLAGS="$LDFLAGS -pthread"
+PKG_CHECK_MODULES(LIBOSMOCORE, libosmocore >= 1.4.0)
+PKG_CHECK_MODULES(LIBOSMOGSM, libosmogsm >= 1.4.0)
+PKG_CHECK_MODULES(LIBOSMOCTRL, libosmoctrl >= 1.4.0)
+PKG_CHECK_MODULES(LIBOSMOVTY, libosmovty >= 1.4.0)
+PKG_CHECK_MODULES(LIBOSMONETIF, libosmo-netif >= 0.6.0)
+PKG_CHECK_MODULES(LIBOSMOABIS, libosmoabis >= 1.0.0)
+PKG_CHECK_MODULES(LIBOSMOTRAU, libosmotrau >= 1.0.0)

 AC_ARG_ENABLE(sanitize,
 	[AS_HELP_STRING(
@@ -85,6 +85,15 @@ then
 	CPPFLAGS="$CPPFLAGS $WERROR_FLAGS"
 fi

+dnl Checks for typedefs, structures and compiler characteristics
+
+AX_CHECK_COMPILE_FLAG([-Werror=implicit], [CFLAGS="$CFLAGS -Werror=implicit"])
+AX_CHECK_COMPILE_FLAG([-Werror=maybe-uninitialized], [CFLAGS="$CFLAGS -Werror=maybe-uninitialized"])
+AX_CHECK_COMPILE_FLAG([-Werror=memset-transposed-args], [CFLAGS="$CFLAGS -Werror=memset-transposed-args"])
+AX_CHECK_COMPILE_FLAG([-Wnull-dereference], [CFLAGS="$CFLAGS -Wnull-dereference"])
+AX_CHECK_COMPILE_FLAG([-Werror=sizeof-array-argument], [CFLAGS="$CFLAGS -Werror=sizeof-array-argument"])
+AX_CHECK_COMPILE_FLAG([-Werror=sizeof-pointer-memaccess], [CFLAGS="$CFLAGS -Werror=sizeof-pointer-memaccess"])
+
 # Coverage build taken from WebKit's configure.in
 AC_MSG_CHECKING([whether to enable code coverage support])
 AC_ARG_ENABLE(coverage,
--- a/contrib/ipa.py
+++ b/contrib/ipa.py
@@ -15,6 +15,10 @@
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 """

--- a/contrib/jenkins.sh
+++ b/contrib/jenkins.sh
@@ -36,6 +36,7 @@ osmo-build-dep.sh libosmo-netif
 # Additional configure options and depends
 CONFIG=""
 if [ "$WITH_MANUALS" = "1" ]; then
+	osmo-build-dep.sh osmo-gsm-manuals
 	CONFIG="--enable-manuals"
 fi

@@ -49,18 +50,18 @@ set -x

 cd "$base"
 autoreconf --install --force
-./configure --enable-sanitize --enable-vty-tests --enable-external-tests --enable-werror $CONFIG
+./configure --enable-vty-tests --enable-external-tests --enable-werror $CONFIG
 $MAKE $PARALLEL_MAKE
 LD_LIBRARY_PATH="$inst/lib" $MAKE check \
  || cat-testlogs.sh
 LD_LIBRARY_PATH="$inst/lib" \
  DISTCHECK_CONFIGURE_FLAGS="--enable-vty-tests --enable-external-tests $CONFIG" \
-  $MAKE $PARALLEL_MAKE distcheck \
+  $MAKE distcheck \
  || cat-testlogs.sh

 if [ "$WITH_MANUALS" = "1" ] && [ "$PUBLISH" = "1" ]; then
 	make -C "$base/doc/manuals" publish
 fi

-$MAKE $PARALLEL_MAKE maintainer-clean
+$MAKE maintainer-clean
 osmo-clean-workspace.sh
--- a/contrib/osmo-mgw.spec.in
+++ b/contrib/osmo-mgw.spec.in
@@ -29,30 +29,30 @@ BuildRequires:  pkgconfig >= 0.20
 %if 0%{?suse_version}
 BuildRequires:  systemd-rpm-macros
 %endif
-BuildRequires:  pkgconfig(libosmo-netif) >= 1.1.0
-BuildRequires:  pkgconfig(libosmocore) >= 1.6.0
-BuildRequires:  pkgconfig(libosmoctrl) >= 1.6.0
-BuildRequires:  pkgconfig(libosmogsm) >= 1.6.0
-BuildRequires:  pkgconfig(libosmovty) >= 1.6.0
-BuildRequires:  pkgconfig(libosmocoding) >= 1.6.0
-BuildRequires:  pkgconfig(libosmoabis) >= 1.2.0
-BuildRequires:  pkgconfig(libosmotrau) >= 1.2.0
+BuildRequires:  pkgconfig(libosmo-netif) >= 0.6.0
+BuildRequires:  pkgconfig(libosmocore) >= 1.0.0
+BuildRequires:  pkgconfig(libosmoctrl) >= 1.1.0
+BuildRequires:  pkgconfig(libosmogsm) >= 1.0.0
+BuildRequires:  pkgconfig(libosmovty) >= 1.0.0
+BuildRequires:  pkgconfig(libosmocoding) >= 1.0.0
+BuildRequires:  pkgconfig(libosmoabis) >= 1.0.0
+BuildRequires:  pkgconfig(libosmotrau) >= 1.0.0
 %{?systemd_requires}

 %description
 OsmoMGW is Osmocom's Media Gateway for 2G and 3G circuit-switched mobile networks.

-%package -n libosmo-mgcp-client9
+%package -n libosmo-mgcp-client6
 Summary:        Osmocom's Media Gateway Control Protocol client library
 Group:          System/Libraries

-%description -n libosmo-mgcp-client9
+%description -n libosmo-mgcp-client6
 Osmocom's Media Gateway Control Protocol client library.

 %package -n libosmo-mgcp-client-devel
 Summary:        Development files for Osmocom's Media Gateway Control Protocol client library
 Group:          Development/Libraries/C and C++
-Requires:       libosmo-mgcp-client9 = %{version}
+Requires:       libosmo-mgcp-client6 = %{version}

 %description -n libosmo-mgcp-client-devel
 Osmocom's Media Gateway Control Protocol client librarary.
@@ -90,8 +90,8 @@ find %{buildroot} -type f -name "*.la" -delete -print
 %check
 make %{?_smp_mflags} check || (find . -name testsuite.log -exec cat {} +)

-%post   -n libosmo-mgcp-client9 -p /sbin/ldconfig
-%postun -n libosmo-mgcp-client9 -p /sbin/ldconfig
+%post   -n libosmo-mgcp-client6 -p /sbin/ldconfig
+%postun -n libosmo-mgcp-client6 -p /sbin/ldconfig

 %if 0%{?suse_version}
 %preun
@@ -119,8 +119,8 @@ make %{?_smp_mflags} check || (find . -name testsuite.log -exec cat {} +)
 %dir %{_sysconfdir}/osmocom
 %config(noreplace) %{_sysconfdir}/osmocom/osmo-mgw.cfg

-%files -n libosmo-mgcp-client9
-%{_libdir}/libosmo-mgcp-client.so.9*
+%files -n libosmo-mgcp-client6
+%{_libdir}/libosmo-mgcp-client.so.6*

 %files -n libosmo-mgcp-client-devel
 %{_libdir}/libosmo-mgcp-client.so
--- a/contrib/simcom2rtp/Makefile
+++ b/contrib/simcom2rtp/Makefile
@@ -0,0 +1,11 @@
+CFLAGS:= -O2 -g -Wall $(shell pkg-config --cflags libosmocore libosmotrau)
+LIBS:= $(shell pkg-config --libs libosmocore libosmotrau)
+
+all: osmo-simcom2rtp
+
+osmo-simcom2rtp: g711.o g711_table.o simcom2rtp.o
+	$(CC) $(LDFLAGS) -o $@ $^ $(LIBS)
+
+%.o: %.c
+	$(CC) $(CFLAGS) -o $@ -c $^
+
--- a/contrib/simcom2rtp/g711.c
+++ b/contrib/simcom2rtp/g711.c
@@ -0,0 +1,313 @@
+/*
+ * This source code is a product of Sun Microsystems, Inc. and is provided
+ * for unrestricted use.  Users may copy or modify this source code without
+ * charge.
+ *
+ * SUN SOURCE CODE IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING
+ * THE WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun source code is provided with no support and without any obligation on
+ * the part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY THIS SOFTWARE
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+/*
+ * December 30, 1994:
+ * Functions linear2alaw, linear2ulaw have been updated to correctly
+ * convert unquantized 16 bit values.
+ * Tables for direct u- to A-law and A- to u-law conversions have been
+ * corrected.
+ * Borge Lindberg, Center for PersonKommunikation, Aalborg University.
+ * bli@cpk.auc.dk
+ *
+ */
+/*
+ * Downloaded from comp.speech site in Cambridge.
+ *
+ */
+
+#include "g711.h"
+
+/*
+ * g711.c
+ *
+ * u-law, A-law and linear PCM conversions.
+ * Source: http://www.speech.kth.se/cost250/refsys/latest/src/g711.c
+ */
+#define	SIGN_BIT	(0x80)		/* Sign bit for a A-law byte. */
+#define	QUANT_MASK	(0xf)		/* Quantization field mask. */
+#define	NSEGS		(8)		/* Number of A-law segments. */
+#define	SEG_SHIFT	(4)		/* Left shift for segment number. */
+#define	SEG_MASK	(0x70)		/* Segment field mask. */
+
+static short seg_aend[8] = {0x1F, 0x3F, 0x7F, 0xFF,
+			    0x1FF, 0x3FF, 0x7FF, 0xFFF};
+static short seg_uend[8] = {0x3F, 0x7F, 0xFF, 0x1FF,
+			    0x3FF, 0x7FF, 0xFFF, 0x1FFF};
+
+/* copy from CCITT G.711 specifications */
+unsigned char _u2a[128] = {			/* u- to A-law conversions */
+	1,	1,	2,	2,	3,	3,	4,	4,
+	5,	5,	6,	6,	7,	7,	8,	8,
+	9,	10,	11,	12,	13,	14,	15,	16,
+	17,	18,	19,	20,	21,	22,	23,	24,
+	25,	27,	29,	31,	33,	34,	35,	36,
+	37,	38,	39,	40,	41,	42,	43,	44,
+	46,	48,	49,	50,	51,	52,	53,	54,
+	55,	56,	57,	58,	59,	60,	61,	62,
+	64,	65,	66,	67,	68,	69,	70,	71,
+	72,	73,	74,	75,	76,	77,	78,	79,
+/* corrected:
+	81,	82,	83,	84,	85,	86,	87,	88, 
+   should be: */
+	80,	82,	83,	84,	85,	86,	87,	88,
+	89,	90,	91,	92,	93,	94,	95,	96,
+	97,	98,	99,	100,	101,	102,	103,	104,
+	105,	106,	107,	108,	109,	110,	111,	112,
+	113,	114,	115,	116,	117,	118,	119,	120,
+	121,	122,	123,	124,	125,	126,	127,	128};
+
+unsigned char _a2u[128] = {			/* A- to u-law conversions */
+	1,	3,	5,	7,	9,	11,	13,	15,
+	16,	17,	18,	19,	20,	21,	22,	23,
+	24,	25,	26,	27,	28,	29,	30,	31,
+	32,	32,	33,	33,	34,	34,	35,	35,
+	36,	37,	38,	39,	40,	41,	42,	43,
+	44,	45,	46,	47,	48,	48,	49,	49,
+	50,	51,	52,	53,	54,	55,	56,	57,
+	58,	59,	60,	61,	62,	63,	64,	64,
+	65,	66,	67,	68,	69,	70,	71,	72,
+/* corrected:
+	73,	74,	75,	76,	77,	78,	79,	79,
+   should be: */
+	73,	74,	75,	76,	77,	78,	79,	80,
+	80,	81,	82,	83,	84,	85,	86,	87,
+	88,	89,	90,	91,	92,	93,	94,	95,
+	96,	97,	98,	99,	100,	101,	102,	103,
+	104,	105,	106,	107,	108,	109,	110,	111,
+	112,	113,	114,	115,	116,	117,	118,	119,
+	120,	121,	122,	123,	124,	125,	126,	127};
+
+static short search(
+   short val,
+   short *table,
+   short size)
+{
+   short i;
+   
+   for (i = 0; i < size; i++) {
+      if (val <= *table++)
+	 return (i);
+   }
+   return (size);
+}
+
+/*
+ * linear2alaw() - Convert a 16-bit linear PCM value to 8-bit A-law
+ *
+ * linear2alaw() accepts an 16-bit integer and encodes it as A-law data.
+ *
+ *		Linear Input Code	Compressed Code
+ *	------------------------	---------------
+ *	0000000wxyza			000wxyz
+ *	0000001wxyza			001wxyz
+ *	000001wxyzab			010wxyz
+ *	00001wxyzabc			011wxyz
+ *	0001wxyzabcd			100wxyz
+ *	001wxyzabcde			101wxyz
+ *	01wxyzabcdef			110wxyz
+ *	1wxyzabcdefg			111wxyz
+ *
+ * For further information see John C. Bellamy's Digital Telephony, 1982,
+ * John Wiley & Sons, pps 98-111 and 472-476.
+ */
+unsigned char
+linear2alaw(short pcm_val)	/* 2's complement (16-bit range) */
+{
+   short	 mask;
+   short	 seg;
+   unsigned char aval;
+   
+   pcm_val = pcm_val >> 3;
+
+   if (pcm_val >= 0) {
+      mask = 0xD5;		/* sign (7th) bit = 1 */
+   } else {
+      mask = 0x55;		/* sign bit = 0 */
+      pcm_val = -pcm_val - 1;
+   }
+   
+   /* Convert the scaled magnitude to segment number. */
+   seg = search(pcm_val, seg_aend, 8);
+   
+   /* Combine the sign, segment, and quantization bits. */
+   
+   if (seg >= 8)		/* out of range, return maximum value. */
+      return (unsigned char) (0x7F ^ mask);
+   else {
+      aval = (unsigned char) seg << SEG_SHIFT;
+      if (seg < 2)
+	 aval |= (pcm_val >> 1) & QUANT_MASK;
+      else
+	 aval |= (pcm_val >> seg) & QUANT_MASK;
+      return (aval ^ mask);
+   }
+}
+
+/*
+ * alaw2linear() - Convert an A-law value to 16-bit linear PCM
+ *
+ */
+short
+alaw2linear(
+   unsigned char	a_val)
+{
+   short t;
+   short seg;
+   
+   a_val ^= 0x55;
+   
+   t = (a_val & QUANT_MASK) << 4;
+   seg = ((unsigned)a_val & SEG_MASK) >> SEG_SHIFT;
+   switch (seg) {
+   case 0:
+      t += 8;
+      break;
+   case 1:
+      t += 0x108;
+      break;
+   default:
+      t += 0x108;
+      t <<= seg - 1;
+   }
+   return ((a_val & SIGN_BIT) ? t : -t);
+}
+
+#define	BIAS		(0x84)		/* Bias for linear code. */
+#define CLIP            8159
+
+/*
+* linear2ulaw() - Convert a linear PCM value to u-law
+*
+* In order to simplify the encoding process, the original linear magnitude
+* is biased by adding 33 which shifts the encoding range from (0 - 8158) to
+* (33 - 8191). The result can be seen in the following encoding table:
+*
+*	Biased Linear Input Code	Compressed Code
+*	------------------------	---------------
+*	00000001wxyza			000wxyz
+*	0000001wxyzab			001wxyz
+*	000001wxyzabc			010wxyz
+*	00001wxyzabcd			011wxyz
+*	0001wxyzabcde			100wxyz
+*	001wxyzabcdef			101wxyz
+*	01wxyzabcdefg			110wxyz
+*	1wxyzabcdefgh			111wxyz
+*
+* Each biased linear code has a leading 1 which identifies the segment
+* number. The value of the segment number is equal to 7 minus the number
+* of leading 0's. The quantization interval is directly available as the
+* four bits wxyz.  * The trailing bits (a - h) are ignored.
+*
+* Ordinarily the complement of the resulting code word is used for
+* transmission, and so the code word is complemented before it is returned.
+*
+* For further information see John C. Bellamy's Digital Telephony, 1982,
+* John Wiley & Sons, pps 98-111 and 472-476.
+*/
+unsigned char
+linear2ulaw(
+   short pcm_val)	/* 2's complement (16-bit range) */
+{
+   short         mask;
+   short	 seg;
+   unsigned char uval;
+   
+   /* Get the sign and the magnitude of the value. */
+   pcm_val = pcm_val >> 2;
+   if (pcm_val < 0) {
+      pcm_val = -pcm_val;
+      mask = 0x7F;
+   } else {
+      mask = 0xFF;
+   }
+   if ( pcm_val > CLIP ) pcm_val = CLIP;		/* clip the magnitude */
+   pcm_val += (BIAS >> 2);
+   
+   /* Convert the scaled magnitude to segment number. */
+   seg = search(pcm_val, seg_uend, 8);
+   
+   /*
+   * Combine the sign, segment, quantization bits;
+   * and complement the code word.
+   */
+   if (seg >= 8)		/* out of range, return maximum value. */
+      return (unsigned char) (0x7F ^ mask);
+   else {
+      uval = (unsigned char) (seg << 4) | ((pcm_val >> (seg + 1)) & 0xF);
+      return (uval ^ mask);
+   }
+   
+}
+
+/*
+ * ulaw2linear() - Convert a u-law value to 16-bit linear PCM
+ *
+ * First, a biased linear code is derived from the code word. An unbiased
+ * output can then be obtained by subtracting 33 from the biased code.
+ *
+ * Note that this function expects to be passed the complement of the
+ * original code word. This is in keeping with ISDN conventions.
+ */
+short
+ulaw2linear(
+   unsigned char	u_val)
+{
+   short t;
+   
+   /* Complement to obtain normal u-law value. */
+   u_val = ~u_val;
+   
+   /*
+    * Extract and bias the quantization bits. Then
+    * shift up by the segment number and subtract out the bias.
+    */
+   t = ((u_val & QUANT_MASK) << 3) + BIAS;
+   t <<= ((unsigned)u_val & SEG_MASK) >> SEG_SHIFT;
+   
+   return ((u_val & SIGN_BIT) ? (BIAS - t) : (t - BIAS));
+}
+
+/* A-law to u-law conversion */
+unsigned char
+alaw2ulaw(
+   unsigned char	aval)
+{
+   aval &= 0xff;
+   return (unsigned char) ((aval & 0x80) ? (0xFF ^ _a2u[aval ^ 0xD5]) :
+	   (0x7F ^ _a2u[aval ^ 0x55]));
+}
+
+/* u-law to A-law conversion */
+unsigned char
+ulaw2alaw(
+   unsigned char	uval)
+{
+   uval &= 0xff;
+   return (unsigned char) ((uval & 0x80) ? (0xD5 ^ (_u2a[0xFF ^ uval] - 1)) :
+			   (0x55 ^ (_u2a[0x7F ^ uval] - 1)));
+}
+
+/* ---------- end of g711.c ----------------------------------------------------- */
--- a/contrib/simcom2rtp/g711.h
+++ b/contrib/simcom2rtp/g711.h
@@ -0,0 +1,27 @@
+/*
+ * g711.h
+ *
+ * u-law, A-law and linear PCM conversions.
+ * Source: http://www.speech.kth.se/cost250/refsys/latest/src/g711.h
+ */
+
+#ifndef _G711_H_
+#define _G711_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+unsigned char	linear2alaw(short pcm_val);
+short		    alaw2linear(unsigned char a_val);
+unsigned char	linear2ulaw(short pcm_val);
+short		    ulaw2linear(unsigned char u_val);
+unsigned char	alaw2ulaw(unsigned char aval);
+unsigned char	ulaw2alaw(unsigned char uval);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _G711_H_ */
--- a/contrib/simcom2rtp/g711_table.c
+++ b/contrib/simcom2rtp/g711_table.c
@@ -0,0 +1,102 @@
+#ifndef G711_TABLE_H
+#define G711_TABLE_H
+
+#include "g711.h"
+
+/* 16384 entries per table (16 bit) */
+unsigned char linear_to_alaw[65536];
+unsigned char linear_to_ulaw[65536];
+
+/* 16384 entries per table (8 bit) */
+unsigned short alaw_to_linear[256];
+unsigned short ulaw_to_linear[256];
+
+static void build_linear_to_xlaw_table(unsigned char *linear_to_xlaw,
+                                       unsigned char (*linear2xlaw)(short))
+{
+    int i;
+
+    for (i=0; i<65536;i++){
+        linear_to_xlaw[i] = linear2xlaw((short) i);
+    }
+}
+
+static void build_xlaw_to_linear_table(unsigned short *xlaw_to_linear,
+                                       short (*xlaw2linear)(unsigned char))
+{
+    int i;
+
+    for (i=0; i<256;i++){
+        xlaw_to_linear[i] = (unsigned short) xlaw2linear(i);
+    }
+}
+
+static void pcm16_to_xlaw(unsigned char *linear_to_xlaw, int src_length, const char *src_samples, char *dst_samples)
+{
+    int i;
+    const unsigned short *s_samples;
+
+    s_samples = (const unsigned short *)src_samples;
+
+    for (i=0; i < src_length / 2; i++)
+    {
+        dst_samples[i] = linear_to_xlaw[s_samples[i]];
+    }
+}
+
+static void xlaw_to_pcm16(unsigned short *xlaw_to_linear, int src_length, const char *src_samples, char *dst_samples)
+{
+    int i;
+    unsigned char *s_samples;
+    unsigned short *d_samples;
+
+    s_samples = (unsigned char *) src_samples;
+    d_samples = (unsigned short *)dst_samples;
+
+    for (i=0; i < src_length; i++)
+    {
+        d_samples[i] = xlaw_to_linear[s_samples[i]];
+    }
+}
+
+void pcm16_to_alaw(int src_length, const char *src_samples, char *dst_samples)
+{
+    pcm16_to_xlaw(linear_to_alaw, src_length, src_samples, dst_samples);
+}
+
+void pcm16_to_ulaw(int src_length, const char *src_samples, char *dst_samples)
+{
+    pcm16_to_xlaw(linear_to_ulaw, src_length, src_samples, dst_samples);
+}
+
+void alaw_to_pcm16(int src_length, const char *src_samples, char *dst_samples)
+{
+    xlaw_to_pcm16(alaw_to_linear, src_length, src_samples, dst_samples);
+}
+
+void ulaw_to_pcm16(int src_length, const char *src_samples, char *dst_samples)
+{
+    xlaw_to_pcm16(ulaw_to_linear, src_length, src_samples, dst_samples);
+}
+
+void pcm16_alaw_tableinit()
+{
+    build_linear_to_xlaw_table(linear_to_alaw, linear2alaw);
+}
+
+void pcm16_ulaw_tableinit()
+{
+    build_linear_to_xlaw_table(linear_to_ulaw, linear2ulaw);
+}
+
+void alaw_pcm16_tableinit()
+{
+    build_xlaw_to_linear_table(alaw_to_linear, alaw2linear);
+}
+
+void ulaw_pcm16_tableinit()
+{
+    build_xlaw_to_linear_table(ulaw_to_linear, ulaw2linear);
+}
+
+#endif // G711_TABLE_H
--- a/contrib/simcom2rtp/g711_table.h
+++ b/contrib/simcom2rtp/g711_table.h
@@ -0,0 +1,14 @@
+#ifndef G711_TABLE_H
+#define G711_TABLE_H
+
+void pcm16_to_alaw(int length, const char *src_samples, char *dst_samples);
+void pcm16_to_ulaw(int length, const char *src_samples, char *dst_samples);
+void alaw_to_pcm16(int length, const char *src_samples, char *dst_samples);
+void ulaw_to_pcm16(int length, const char *src_samples, char *dst_samples);
+
+void pcm16_alaw_tableinit();
+void pcm16_ulaw_tableinit();
+void alaw_pcm16_tableinit();
+void ulaw_pcm16_tableinit();
+
+#endif // G711_TABLE_H
--- a/contrib/simcom2rtp/simcom2rtp.c
+++ b/contrib/simcom2rtp/simcom2rtp.c
@@ -0,0 +1,218 @@
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+
+#include <osmocom/core/select.h>
+#include <osmocom/core/msgb.h>
+#include <osmocom/core/fsm.h>
+#include <osmocom/core/logging.h>
+#include <osmocom/core/application.h>
+#include <osmocom/core/serial.h>
+
+#include <osmocom/trau/osmo_ortp.h>
+
+#include "g711.h"
+
+#define RTP_PT_PCMU	0
+#define RTP_PT_PCMA	8
+
+struct modem_state {
+	struct osmo_fd data_fd;
+	struct osmo_rtp_socket *rtp;
+	/* queue of linear PCM audio in RTP -> modem direction */
+	struct llist_head rtp2modem;
+	/* message buffer used if samples insufficient for next RTP frame were received */
+	struct msgb *modem2rtp;
+};
+
+static void *g_tall_ctx;
+
+
+/* call-back on received RTP data */
+static void ortp_rx_cb(struct osmo_rtp_socket *rs, const uint8_t *payload,
+			unsigned int payload_len, uint16_t seq_nr, uint32_t timestamp, bool marker)
+{
+	/* we received a RTP frame */
+	struct modem_state *ms = rs->priv;
+	struct msgb *msg = msgb_alloc(payload_len*2, "RTP Rx");
+	unsigned int i;
+	int16_t *out;
+
+	OSMO_ASSERT(msg);
+
+	out = (int16_t *) msgb_put(msg, payload_len*2);
+
+	if (payload_len != 160) {
+		fprintf(stderr, "RTP payload length %d != 160, dropping\n", payload_len);
+		msgb_free(msg);
+		return;
+	}
+
+	/* convert from Alaw to linear PCM (160 -> 320 bytes) */
+	for (i = 0; i < payload_len; i++)
+		out[i] = alaw2linear(payload[i]);
+
+	/* append to the write queue */
+	msgb_enqueue(&ms->rtp2modem, msg);
+	ms->data_fd.when |= OSMO_FD_WRITE;
+}
+
+static void modem2rtp(struct modem_state *ms, const uint8_t *data, unsigned int len)
+{
+	const int16_t *data16 = (const int16_t *)data;
+	unsigned int samples = len / 2;
+	unsigned int offset = 0;
+	unsigned int i;
+
+	/* samples are always 16bit, we cannot read half a sample */
+	OSMO_ASSERT((len & 1) == 0);
+
+	/* first complete any pending incomplete RTP frame */
+	if (ms->modem2rtp) {
+		struct msgb *msg = ms->modem2rtp;
+		unsigned int missing_samples = 160 - msgb_length(msg);
+		for (i = 0; i < missing_samples; i++) {
+			if (i >= samples)
+				break;
+			msgb_put_u8(msg, linear2alaw(data16[i]));
+		}
+		offset = i;
+		if (msgb_length(msg) == 160) {
+			osmo_rtp_send_frame_ext(ms->rtp, msgb_data(msg), msgb_length(msg), 160, false);
+			msgb_free(msg);
+		}
+	}
+
+	/* then send as many RTP frames as we have samples */
+	for (offset = offset; offset + 160 <= samples; offset += 160) {
+		uint8_t buf[160];
+		for (i = 0; i < sizeof(buf); i++)
+			buf[i] = linear2alaw(data16[offset + i]);
+		osmo_rtp_send_frame_ext(ms->rtp, buf, sizeof(buf), 160, false);
+	}
+
+	/* store remainder in msgb */
+	if (offset < samples) {
+		struct msgb *msg = msgb_alloc_c(ms, 160, "modem2rtp");
+		OSMO_ASSERT(msg);
+		OSMO_ASSERT(len - offset < 160);
+		for (i = 0; i < len - offset; i++)
+			msgb_put_u8(msg, linear2alaw(data16[offset + i]));
+		ms->modem2rtp = msg;
+	}
+}
+
+
+/* call back on file descriptor events of the modem DATA ttyUSB device */
+static int modem_data_fd_cb(struct osmo_fd *ofd, unsigned int what)
+{
+	struct modem_state *ms = ofd->data;
+	int rc;
+
+	if (what & OSMO_FD_READ) {
+		/* SIM5360 USB AUDIO Application Note v1.01 states 1600 bytes every 100ms */
+		uint8_t rx_buf[1600];
+		rc = read(ofd->fd, rx_buf, sizeof(rx_buf));
+		OSMO_ASSERT(rc > 0);
+		modem2rtp(ms, rx_buf, rc);
+	}
+
+	if (what & OSMO_FD_WRITE) {
+		struct msgb *msg = msgb_dequeue(&ms->rtp2modem);
+		if (!msg)
+			ofd->when &= ~OSMO_FD_WRITE;
+		else {
+			/* SIM5300 USB AUDIO Application Note v1.01 states 640 bytes every 40ms;
+			 * we simply write every RTP frame individually (320 bytes every 20ms) */
+			rc = write(ofd->fd, msgb_data(msg), msgb_length(msg));
+			if (rc != msgb_length(msg))
+				fprintf(stderr, "Short write: %d < %u\n", rc, msgb_length(msg));
+			msgb_free(msg);
+		}
+	}
+
+	return 0;
+}
+
+
+static int modem_data_open(struct modem_state *ms, const char *basepath)
+{
+	char fname[PATH_MAX+1];
+	int fd;
+
+	/* the assumption is that the caller provides something like
+	 * "/dev/serial/by-path/pci-0000:00:14.0-usb-0:2:1" */
+	snprintf(fname, sizeof(fname), "%s.0-port0", basepath);
+
+	fd = osmo_serial_init(fname, 921600);
+	if (fd < 0) {
+		fprintf(stderr, "failed to open device '%s': %s\n", fname, strerror(errno));
+		return -1;
+	}
+	osmo_fd_setup(&ms->data_fd, fd, OSMO_FD_READ, modem_data_fd_cb, ms, 0);
+	osmo_fd_register(&ms->data_fd);
+
+	return 0;
+}
+
+static struct modem_state *modem_create(void *ctx)
+{
+	struct modem_state *ms = talloc_zero(ctx, struct modem_state);
+	int rc;
+
+	INIT_LLIST_HEAD(&ms->rtp2modem);
+
+	ms->rtp = osmo_rtp_socket_create(ms, 0);
+	OSMO_ASSERT(ms->rtp);
+	osmo_rtp_socket_set_pt(ms->rtp, RTP_PT_PCMA);
+	ms->rtp->priv = ms;
+	ms->rtp->rx_cb = ortp_rx_cb;
+
+	rc = osmo_rtp_socket_bind(ms->rtp, "0.0.0.0", 1111);
+	OSMO_ASSERT(rc == 0);
+
+	rc = osmo_rtp_socket_connect(ms->rtp, "127.0.0.1", 2222);
+	//rc = osmo_rtp_socket_autoconnect(ms->rtp);
+	OSMO_ASSERT(rc == 0);
+
+	osmo_rtp_set_source_desc(ms->rtp, "cname", "simcom2rtp", NULL, NULL, NULL,
+				 "osmo-simcom2rtp", NULL);
+
+	return ms;
+}
+
+
+
+
+int main(int argc, char **argv)
+{
+
+	talloc_enable_null_tracking();
+	g_tall_ctx = talloc_named_const(NULL, 1, "simcom2rtp");
+
+	msgb_talloc_ctx_init(g_tall_ctx, 0);
+	osmo_init_logging2(g_tall_ctx, NULL);
+	osmo_fsm_log_timeouts(true);
+	osmo_fsm_log_addr(true);
+	//osmo_stats_init(g_tall_ctx);
+	osmo_rtp_init(g_tall_ctx);
+
+	struct modem_state *ms = modem_create(g_tall_ctx);
+	int rc;
+
+	OSMO_ASSERT(ms);
+	rc = modem_data_open(ms, "/dev/serial/by-path/pci-0000:00:14.0-usb-0:2:1");
+	OSMO_ASSERT(rc == 0);
+
+	while (1) {
+		osmo_select_main(0);
+	}
+
+}
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,283 +1,3 @@
-osmo-mgw (1.9.0) unstable; urgency=medium
-
-  [ Harald Welte ]
-  * TOS bits != DSCP
-  * manual: don't define fig-bsc twice
-  * switch from osmo_sock_set_dscp() to OSMO_SOCK_F_DSCP()
-  * mgw: Add support for setting socket priority from VTY
-  * manual: Include QoS chapter and add osmo-mgw specific example
-
-  [ Keith ]
-  * Add vty command 'show mgcp active'
-  * Log some useful messages at ERROR/INFO instead of DEBUG
-
-  [ Neels Hofmeyr ]
-  * send DLCX only once
-  * tweak termination DLCX log msg
-  * add osmo_mgcpc_ep_ci_get_remote_rtp_info()
-  * check_rtp_destin(): clarify log msg
-  * mgcp_client_fsm delete: set mgcp_client as ctx, not NULL
-  * mgcp_client_endpoint_fsm: on term, still let conns wait for DLCX OK
-  * mgcp_client_fsm: add missing log_subsys
-  * mgcp_client: add logging on received MGCP messages
-
-  [ Philipp Maier ]
-  * mgcp_network: fix implicit address loopback
-  * mgcp_common, mgcp_udp_send: make parameter buf const
-  * mgcp_network: refactor MGCP_DUMMY_LOAD
-  * mgcp_client: drop nunnecessary else statement
-  * mgcp_client: fix error handling in mgcp message generation
-  * mgcp_protocol: fix loop that sends dummy RTP packets
-  * mgw_main: fix loop that resets all endpoints
-  * mgcp_trunk: drop ws line
-  * mgcp_ratectr: drop ws line
-  * mgcp_ratectr: fix sourcecode formatting
-  * mgcp_trunk: add value string for trunk type.
-  * mgcp_ratectr: refactor rate counter and set group name
-  * mgcp_protocol: forward declare mgcp_endpoint
-  * mgcp_endp: make wildcarded detection separate
-  * mgcp_protocol: refactor request handler array
-  * mgcp_trunk: use unsigned int instead of int as trunk_nr
-  * mgcp_protocol: refactor MGCP request handling
-  * mgcp_ratectr: add stats items to monitor trunk usage
-  * mgcp_msg: add trunk parameter to mgcp_check_param for logging
-  * mgcp_protocol: refactor function create_response_with_sdp
-  * mgcp_protocol: add support for wildcarded DLCX
-  * remove struct member wildcarded_req from struct mgcp_endpoint
-  * mgcp_lient: remove unsubstantial FIXME note
-  * mgcp_protocol: assert endp when it becomes mandatory
-  * mgcp_trunk: check MGW domain name earlier
-  * mgcp_ratectr: add stats items to monitor trunk usage
-  * mgcp_client: fix typo Initalize -> Initialize
-  * mgcp_protocol: get rid of policy_cb and change_cb
-  * mgcp_ratectr: do not set talloc destructor on library allocated item
-  * mgcp_client: allow to reset endpoints on startup
-  * mgcp_client_vty: remove unnecessary checks
-  * mgcp_client: do not print (null) when address is ANY
-  * mgcp_client: refactor function init_socket
-  * libosmo-mgcp-client: extend the mgcp_client for MGW pooling
-  * mgcp_client_vty: add missing docstrings
-  * mgcp_client_vty: add OSMO_ASSERT on pool parameter
-  * mgcp_client_vty: fix docstrings for mgw-pool
-  * mgcp_client_vty: cosmetic: doc string should terminated with \n
-  * mgcp_client_vty: fixing docstring
-  * mgcp_ratectr: remove unusued rate counters
-  * mgcp_client: fix typo in doxygen comment
-  * mgcp_client: add MGW name as logging context
-
-  [ Pau Espin Pedrol ]
-  * Use new stat item/ctr getter APIs
-  * constify arg in addr_is_any()
-  * Define patch_ssrc as bool type
-  * constify some function arg pointers
-  * mgcp_network.c: Reorder some functions in file
-  * mgcp_send_dummy: Check RTP destination is available before attempt tx
-  * mgw: rx CRCX: Avoid sending dummy rtp if remote address not provided
-  * Fail rx MDCX sendrecv with invalid remote addr
-  * Take into account Marker bit when patching RTP stream
-  * Use DLMGCP instead of DLGLOBAL in log lines
-  * Fix attribute parsing on gcc 11.1.0
-
-  [ neels ]
-  * Revert "mgcp_ratectr: add stats items to monitor trunk usage"
-
-  [ Daniel Willmann ]
-  * contrib/jenkins: Use ASAN for osmo-mgw
-
-  [ Oliver Smith ]
-  * mgcp_client_vty: add missing NO_STR
-  * Revert "Turn some compiler warnings into errors"
-
-  [ Eric ]
-  * add vscode stuff to gitignore
-  * configure.ac: fix maybe-uninitialized for clang
-  * fix missing includes and forward declarations
-  * rename do_retransmission
-  * mgcp_sdp: fix potential leak
-  * stats: make sanitizers happy
-  * libosmo-mgcp: cleanup audio codex alloc
-  * libosmo-mgcp: atomic rate counter group indexes
-  * libosmo-mgcp: do not use the default msgb talloc context
-  * globally lock the portrange when trying to grab a port to prep for multithreading
-  * embed strings into structs
-  * adjust talloc context
-  * endp: do not cache cfg pointer
-  * add modified .clang-format
-  * rename strip_epname and find_specific_endpoint and make them available
-  * fix mgcp_conn_free_all
-  * fix up some docstrings that lost their dot
-
-  [ Vadim Yanitskiy ]
-  * libosmo-mgcp: use OSMO_STRLCPY_ARRAY in mgcp_codec_add()
-
- -- Pau Espin Pedrol <pespin@sysmocom.de>  Tue, 16 Nov 2021 16:59:21 +0100
-
-osmo-mgw (1.8.1) unstable; urgency=medium
-
-  * attempt to fix RPM spec file after recent soversion bump
-
- -- Harald Welte <laforge@osmocom.org>  Wed, 24 Feb 2021 10:56:17 +0100
-
-osmo-mgw (1.8.0) unstable; urgency=medium
-
-  [ Harald Welte ]
-  * Fix number of endpoints of default trunk
-  * Add CTRL interface to osmo-mgw
-  * Update per-trunk global packet/byte counters in real-time
-  * remove accidential TODO-RELEASE entry
-  * mgcp_protocol: Avoid code duplication between virtual + other trunks
-  * osmo-mgw.spec.in: Use %config(noreplace) to retain current config file
-  * mgcp_client_init(): consider "talloc returns NULL" case
-  * mgcp_client_pending_add(): Consider "talloc returns NULL" case
-  * libosmo-mgcp-client: fix memleak in case if no response is received
-  * debian/control + SPEC: Add missing build dependency to libosmo-abis
-  * osmo-mgw.spec.in: Fix dependency to libosmoabis
-  * osmo-mgw.spec.in: Add missing dependency to libosmotrau
-  * Add example osmo-mgw configuration file for Abis/E1
-  * use osmo_fd_setup() whenever applicable
-
-  [ Neels Hofmeyr ]
-  * fix vty dump_trunk: start from zero, do not omit first CONN
-  * allow larger MGCP client wqueue: 10 -> 1024
-  * add osmo-mgw --vty-ref-xml: dump VTY ref XML to stdout
-  * manuals: generate vty reference xml at build time
-  * refactor: use msgb to receive, pass and send RTP packets
-  * change timer T2427001 to X2427
-
-  [ Philipp Maier ]
-  * doc: do not bind osmo-mgw to random ip-address
-  * cosmetic: remove excess newlines
-  * mgcp: remove unused callback pointer
-  * mgcp: find better locations for LOGPCONN and LOGPENDP
-  * vty: fix unreachable code (error msg on trunk alloc fail)
-  * mgcp_vty: fix indentation
-  * osmo-mgw: rename struct mgcp_trunk_config and symbol tcfg
-  * mgcp_vty: fix indentation in VTY config write
-  * osmo-mgw: refactor endpoint and trunk handling
-  * mgcp_trunk: remove audio_name and audio_payload
-  * ratectr: move rate counter definitions into mgcp_ratectr.h
-  * cosmetic: fix doxygen
-  * cosmetic: fix doxygen
-  * cosmetic: fix doxygen for mgcp_cleanup_rtp_bridge_cb()
-  * trunk: get rid of virt_trunk pointer
-  * cosmetic: remove excess space
-  * endp: move endpoint name generation into mgcp_endp.c
-  * endp: add name generator function for E1 endpoints
-  * mgcp_client: add docstring for mgcp_client_rtpbridge_wildcard()
-  * mgcp_trunk: fix docstring for mgcp_trunk_alloc()
-  * mgcp_osmux: remove unused define constants
-  * mgcp_trunk: move enum mgcp_trunk_type to mgcp_trunk.h
-  * mgcp_trunk: use enum type for trunk type variable
-  * trunk: parse E1 trunk number
-  * endp: add typeset for e1-endpoints
-  * mgcp_conn: move struct mgcp_conn mgcp_conn.h
-  * mgcp_internal: remove forward declaration struct mgcp_endpoint_type
-  * endp: add E1 endpoint interlocking
-  * endp: require domain name also for E1 endpoints
-  * mgcp_trunk: pick trunk by number and type
-  * mgcp_client: add function to generate e1-endpoint names
-  * mgcp_endp: use define constant to define max number of E1 subslots
-  * mgcp_endp.c: cosmetic: fix sourcecode formatting
-  * mgcp_trunk: remove double check
-  * mgcp_test: do not access endpoint array elements directly
-  * mgcp_vty: fix endpoint number configuration
-  * mgcp_test: remove trunk2 from unit-test
-  * mgcp_trunk: use talloc_zero_array instead of _talloc_zero_array
-  * mgcp_protocol: remove unused variable
-  * mgcp_e1: finish E1 support, add E1 support from libosmoabis
-  * get rid of mgcp_internal.h
-  * mgcp_ratectr: fix comments in header file
-  * mgcp_e1: use return value of e1inp_line_update()
-  * mgcp_protocol: log when endpoint is unavailable
-  * cosmetic: add missing new-line
-  * mgcp_trunk: drop "trunk 0" limitation
-  * mgcp_e1: make E1 ts initalization more debugable
-  * mgcp_e1: remove unused struct member trunk->e1.line
-  * mgcp_endp: use NUM_E1_TS from e1_input.h
-  * mgcp_trunk: increase default number of virtual endpoints
-  * cosmetic: mgcp_client_fsm: change error message.
-  * mgcp_vty: remove remains of loopback functionality
-  * mgcp_vty: deprecate bind early command
-  * mgcp_e1: do not expose function  mgcp_e1_init()
-  * mgcp_vty: add user attributes to configuration commands
-  * overview: update section limitations.
-  * overview: fix graph "OsmoMGW used with OsmoBSC"
-  * overview: fix graph "OsmoMGW used with OsmoMSC"
-  * overview: add graph to show E1 integration
-  * configuration: remove hint towards trunk 0 limit
-  * configuration: drop note about lackin E1 support
-  * configuration: add note that changes to trunks need a restart
-  * mgcp_vty: fix config write for trunk 0
-  * mgcp_vty: add missing VTY commands for E1 trunks
-  * mgcp_trunk: get rid of magic numbers for E1 slots
-  * configuration: add section about E1 trunks
-  * usermanual: add chapter about mgcp endpoints
-  * mgcp_client: get rid of magic numbers for E1 slots
-
-  [ Eric ]
-  * tests: dlopen does not imply availability of dlsym..
-  * configure.ac: fix libtool issue with clang and sanitizer
-
-  [ Alexander Chemeris ]
-  * vty: Prepend VTY output of counters for better visual separation.
-  * counters: Implement more useful counters.
-  * mgcp_network: Fix a typo in the comment bahviour -> behaviour
-  * rtp_bridge: Demote a chatty ERROR log message to DEBUG level.
-
-  [ Pau Espin Pedrol ]
-  * Use OSMO_FD_* instead of deprecated BSC_FD_*
-  * Support setting rt-prio and cpu-affinity mask through VTY
-  * cosmetic: Rename main talloc ctx
-  * mgcp-client: Support IPv6 in osmo_mgcpc_ep_ci_get_crcx_info_to_sockaddr() implementation
-  * mgcp-client: Fix trailing whitespace in mgcp_client_fsm.h
-  * mgcp_client: Use INET6_ADDRSTRLEN to store addresses in str format
-  * mgcp_client: Allow submitting and parsing IPv6 addr in SDP
-  * mgcp_client: Allow setting IPv6 addresses
-  * mgcp_client: Make MGCP_CLIENT_LOCAL_ADDR_DEFAULT IPv6 compatible
-  * mgcp_client: Support validating IPv6 addresses in CRCX and MDCX commands
-  * mgcp_client: Deprecate unused IPv4-only API
-  * mgcp_client: copy back Connection Information from MDCX ACK
-  * mgw: Fix mgcp_rtp_end field description comment
-  * mgw: Initial IPv6 support
-  * mgw: Introduce VTY cmd 'rtp bind-ip-v6' command
-  * mgw: Find and store RTP conn local_addr once during CRCX handling
-  * mgw: Announce and rebind new local address if change required during MDCX
-  * mgw: osmux: Avoid sending packets on recvonly connection
-  * mgw: Release endpoint after last conn times out
-  * mgw: osmux: Fix conn watchdog timeout not updated
-  * mgw: Don't be case-sensitive when parsing X-Osmo-IGN param
-  * cosmetic: Fix typo in comment
-  * mgw: Avoid logging notice message each time we receive nt param in LCO
-  * mgw: Fix return value documentation for API mgcp_verify_call_id
-  * cosmetic: Fix typo in comment
-  * contrib/jenkins: Enable parallel make in make distcheck
-  * .gitignore: Ignore new autofoo tmp files
-  * tests: Replace deprecated API log_set_print_filename
-
-  [ Oliver Smith ]
-  * contrib: import RPM spec
-  * contrib: integrate RPM spec
-  * Makefile.am: EXTRA_DIST: debian, contrib/*.spec.in
-  * contrib/jenkins: don't build osmo-gsm-manuals
-  * configure.ac: set -std=gnu11
-
-  [ Vadim Yanitskiy ]
-  * libosmo-mgcp-client: fix use-after-free in mgcp_client_tx()
-  * libosmo-mgcp-client: fix use-after-free in mgcp_msg_gen()
-  * libosmo-mgcp: fix unsigned compared against 0 in mgcp_trunk_by_name()
-  * libosmo-mgcp: fix unused extra argument to printf() in add_fmtp()
-  * libosmo-mgcp: always check result of msgb_printf() in add_fmtp()
-  * libosmo-mgcp-client: mgcp_client_tx(): return rc on error
-  * debian/control: change maintainer to the Osmocom team / mailing list
-  * vty: use install_lib_element() and install_lib_element_ve()
-  * main: add --vty-ref-mode, use vty_dump_xml_ref_mode()
-  * fixup mgcp_trunk: increase default number of virtual endpoints
-
-  [ Alexander Couzens ]
-  * configure.ac: require libosmoabis + libosmotrau >= 1.0.0
-
- -- Pau Espin Pedrol <pespin@sysmocom.de>  Tue, 23 Feb 2021 18:28:45 +0100
-
 osmo-mgw (1.7.0) unstable; urgency=medium

  [ Neels Hofmeyr ]
--- a/debian/control
+++ b/debian/control
@@ -6,10 +6,10 @@ Build-Depends: debhelper (>=9),
               dh-autoreconf,
               pkg-config,
               autotools-dev,
-               libosmocore-dev (>= 1.6.0),
-               libosmo-netif-dev (>= 1.1.0),
-               libosmo-abis-dev (>= 1.2.0),
-               osmo-gsm-manuals-dev (>= 1.2.0)
+               libosmocore-dev (>= 1.4.0),
+               libosmo-netif-dev,
+               libosmo-abis-dev,
+               osmo-gsm-manuals-dev
 Standards-Version: 3.9.8
 Vcs-Git: git://git.osmocom.org/osmo-mgw.git
 Vcs-Browser: https://git.osmocom.org/osmo-mgw/
@@ -21,7 +21,7 @@ Multi-Arch: foreign
 Depends: ${misc:Depends}, ${shlibs:Depends}
 Description: OsmoMGW: Osmocom's Media Gateway for 2G and 3G circuit-switched mobile networks

-Package: libosmo-mgcp-client9
+Package: libosmo-mgcp-client6
 Section: libs
 Architecture: any
 Multi-Arch: same
@@ -33,7 +33,7 @@ Package: libosmo-mgcp-client-dev
 Section: libdevel
 Architecture: any
 Multi-Arch: same
-Depends: libosmo-mgcp-client9 (= ${binary:Version}), ${misc:Depends}
+Depends: libosmo-mgcp-client6 (= ${binary:Version}), ${misc:Depends}
 Description: libosmo-mgcp-client: Osmocom's Media Gateway Control Protocol client utilities

 Package: osmo-mgw-doc
--- a/debian/libosmo-mgcp-client6.install
+++ b/debian/libosmo-mgcp-client6.install
--- a/doc/examples/osmo-mgw/osmo-mgw-abis_e1.cfg
+++ b/doc/examples/osmo-mgw/osmo-mgw-abis_e1.cfg
@@ -9,11 +9,11 @@ mgcp
  rtp port-range 4002 16000
  rtp bind-ip 127.0.0.1
  rtp ip-probing
-  rtp ip-dscp 46
+  rtp ip-tos 184
  bind port 2427
  sdp audio payload number 98
  sdp audio payload name GSM
-  number endpoints 512
+  number endpoints 31
  loop 0
  force-realloc 1
  rtcp-omit
--- a/doc/examples/osmo-mgw/osmo-mgw.cfg
+++ b/doc/examples/osmo-mgw/osmo-mgw.cfg
@@ -6,11 +6,11 @@ mgcp
  rtp port-range 4002 16000
  rtp bind-ip 127.0.0.1
  rtp ip-probing
-  rtp ip-dscp 46
+  rtp ip-tos 184
  bind port 2427
  sdp audio payload number 98
  sdp audio payload name GSM
-  number endpoints 512
+  number endpoints 31
  loop 0
  force-realloc 1
  rtcp-omit
--- a/doc/manuals/chapters/configuration.adoc
+++ b/doc/manuals/chapters/configuration.adoc
@@ -23,13 +23,14 @@ OsmoMGW(config-mgcp)# local ip 127.0.0.1

 === Configuring the trunk

-The first trunk is considered a virtual trunk in OsmoMGW. All
+The first trunk (trunk 0) is considered a virtual trunk in OsmoMGW. All
 endpoints of type "rtpbridge" are routed here. The virtual trunk is configured
 in the config-mgcp context.

 All other trunks are configured in the config-mgcp-trunk context, but the
-commands used are identical. Right now trunks are considered only for "ds/e1"
-type endpoints.
+commands used are identical. Right now trunks are considered only for ds/e1
+type endpoints which are not yet implemented. Don't use trunks other than the
+"virtual" trunk 0.

 .Example: MGCP trunk configuration
 ----
@@ -53,77 +54,4 @@ OsmoMGW(config-mgcp)# rtp-patch timestamp <3>
 <2> Hide SSRC changes
 <3> Ensure RTP timestamp is aligned with frame duration

-NOTE: Changes to trunks that affect resource allocation, such as newly created
-trunks or a change of the number of available endpoints, require a full restart
-of osmo-mgw!

-=== E1 trunk considerations
-
-While the RTP bridge trunks are natively based on IP no special considerations
-are required during setup. E1 trunks are mapped on a physical E1 line, which has
-to be configured as shown below.
-
-.Example: E1 line setup
----
-OsmoMGW(config-e1_input)# e1_line 0 driver dahdi <1>
-OsmoMGW(config-e1_input)# e1_line 0 port 2 <2>
----
-<1> Name of the libosmo-abis driver implementation ("dahdi")
-<2> Port number of the physical E1 port to use (2)
-
-In osmo-mgw the e1_input node is used to configure the physical E1 line. The
-line number will be used internally to identify the configured E1 line. The
-port number is the physical E1 connector (sometimes called 'span') at the E1
-hardware. Per trunk an individual E1 line will be needed. Beware that the E1
-driver may also need configuration settings that are not discussed here.
-
-.Example: E1 trunk setup
----
-OsmoMGW(config-mgcp)# trunk 0 <1>
-OsmoMGW(config-mgcp-trunk)# line 0 <2>
----
-<1> Creation of a trunk (0)
-<2> Reference to the E1 line to use (0)
-
-The E1 trunk is created along with a number, typically starting at 0, but if
-required any number from 0-64 is allowed. The E1 trunk configuration concerning
-the IP related aspects is nearly identical to the configuration of the virtual
-trunk. However, it is important that the user assigns one of the E1 line numbers
-that were configured under the e1_input node.
-
-NOTE: The endpoint name that is used on MGCP level will include the trunk number,
-not the E1 line number. For simplicity (and compatibility with OsmoBSC) it is
-recommended to use equal numbers for trunk and E1 line. However, if required any
-E1 line can be mapped flexible on any trunk as long as the mapping is bijective.
-
-.Example: A typical configuration with one E1 trunk
----
-e1_input
- e1_line 0 driver dahdi
- e1_line 0 port 2
-mgcp
- bind ip 127.0.0.1
- rtp net-range 6000 6011
- rtp net-bind-ip 192.168.100.130
- rtp ip-probing
- rtp ip-dscp 46
- no rtp keep-alive
- bind port 2428
- number endpoints 30
- loop 0
- force-realloc 1
- osmux off
- rtp-patch rfc5993hr
- trunk 0
-  rtp keep-alive once
-  no rtp keep-alive
-  line 0
----
-
-NOTE: One E1 trunk always covers a whole E1 line. All subslots (I.640) will be mapped
-to individual MGCP endpoints. As long as the endpoints remain unused the
-underlying E1 timeslot is not used.
-
-NOTE: The E1 trunk implementation also works with T1 lines, however since T1 has
-24 instead of 31 usable timeslots only the endpoints that fall into that 1-24 timeslot
-range will be useable.
--- a/doc/manuals/chapters/mgcp_endpoints.adoc
+++ b/doc/manuals/chapters/mgcp_endpoints.adoc
@@ -1,94 +0,0 @@
-== MGCP Endpoints
-
-MGCP organizes the switching resources in so called endpoints. Each endpoint is
-referenced by its unique identifier. While RFC 3435 specifies a naming scheme, the
-actual identifier naming is subject to the implementation and configuration.
-
-=== RTP proxy / RTP bridge endpoints
-
-OsmoMGW implements a freely configurable number of `rtpbridge` endpoints. Those
-endpoints are able to host two connections at a time to model the functionality
-of a tandem switch.
-
-RTP bridge endpoint identifiers are referenced by the string `rtpbridge/`, a
-hexadecimal number without leading zeros and a domain name (configurable).
-
----
-rtpbridge/<number>@<domain>
----
-
-.Example: List of virtual endpoints
----
-rtpbridge/1@mgw
-rtpbridge/2@mgw
-rtpbridge/3@mgw
-rtpbridge/4@mgw
-rtpbridge/5@mgw
-rtpbridge/6@mgw
-rtpbridge/7@mgw
-rtpbridge/8@mgw
-rtpbridge/9@mgw
-rtpbridge/a@mgw
-rtpbridge/b@mgw
-rtpbridge/c@mgw
-rtpbridge/d@mgw
-rtpbridge/e@mgw
-rtpbridge/f@mgw
-rtpbridge/10@mgw
----
-
-=== E1/T1 endpoints
-
-OsmoMGW supports E1 subslot multiplexing as specified by I.460. All possible
-subslot combinations are mapped on individual endpoints. The endpoint names
-are prefixed with `ds/e1-` followed by the trunk number and the E1 timeslot.
-The subslot is defined by a bit rate and a bit offset.
-
----
-ds/e1-<trunk>/s-<timeslot>/su<bitrate>-<bitoffset>@<domain>
----
-
-.Example: List of endpoints on E1 trunk 0 at E1 timeslot 2
----
-ds/e1-0/s-2/su64-0@mgw
-ds/e1-0/s-2/su32-0@mgw
-ds/e1-0/s-2/su32-4@mgw
-ds/e1-0/s-2/su16-0@mgw
-ds/e1-0/s-2/su16-2@mgw
-ds/e1-0/s-2/su16-4@mgw
-ds/e1-0/s-2/su16-6@mgw
-ds/e1-0/s-2/su8-0@mgw
-ds/e1-0/s-2/su8-1@mgw
-ds/e1-0/s-2/su8-2@mgw
-ds/e1-0/s-2/su8-3@mgw
-ds/e1-0/s-2/su8-4@mgw
-ds/e1-0/s-2/su8-5@mgw
-ds/e1-0/s-2/su8-6@mgw
-ds/e1-0/s-2/su8-7@mgw
----
-
-When creating connections on endpoints that reside in one E1 timeslot the call
-agent must make sure that no overlapping endpoints are used. It is for example
-not possible to use `ds/e1-0/s-2/su16-2@mgw` and `ds/e1-0/s-2/su8-3@mgw` at the
-same time because they overlap.
-
-.Subslot overlapping
-[options="header"]
-|===
-| Bit offset  4+| Subslots
-| 0 | 8k .2+| 16k .4+| 32k .8+| 64k
-| 1 | 8k
-| 2 | 8k .2+| 16k
-| 3 | 8k
-| 4 | 8k .2+| 16k .4+| 32k
-| 5 | 8k
-| 6 | 8k .2+| 16k
-| 7 | 8k
-|===
-
-NOTE: The current implementation (December 2020) only implements TRAU frame
-encoding/decoding for 16K and 8K subslots. Endpoints with other bitrates are
-not yet useable.
-
-NOTE: the VTY command "show mgcp" can be used to get a list of all available
-endpoints (including identifiers)
--- a/doc/manuals/chapters/overview.adoc
+++ b/doc/manuals/chapters/overview.adoc
@@ -21,10 +21,10 @@ Protocol.
 digraph G {
    rankdir = LR;
    OsmoBTS -> OsmoBSC [label="Abis/IP"];
-    OsmoBSC -> "core-network" [label="3GPP AoIP"];
+    OsmoBSC -> OsmoMSC [label="3GPP AoIP"];
    OsmoBSC -> OsmoMGW [label="MGCP"];
    OsmoBTS -> OsmoMGW [label="RTP",dir=both];
-    OsmoMGW -> "core-network" [label="RTP",dir=both];
+    OsmoMGW -> OsmoMSC [label="RTP",dir=both];
    {rank=same OsmoBSC OsmoMGW}
    OsmoMGW [color=red];
 }
@@ -36,9 +36,10 @@ digraph G {
 ----
 digraph G {
    rankdir = LR;
-    "2G BSS" -> OsmoMSC [label="3GPP AoIP"];
+    BTS -> BSC [label="Abis"];
+    BSC -> OsmoMSC [label="3GPP AoIP"];
    OsmoMSC -> OsmoMGW [label="MGCP"];
-    "2G BSS" -> OsmoMGW [label="RTP",dir=both];
+    BSC -> OsmoMGW [label="RTP",dir=both];
    OsmoMSC -> OsmoSIP [label="MNCC"];
    OsmoSIP -> PBX [label="SIP Trunk"];
    OsmoMGW -> PBX [label="RTP",dir=both];
@@ -52,22 +53,6 @@ digraph G {
 }
 ----

-[[fig-bsc-e1]]
-.Integration of legacy E1 BTS in AoIP network
-[graphviz]
----
-digraph G {
-    rankdir = LR;
-    BTS -> OsmoBSC [label="Abis/E1"];
-    OsmoBSC -> "core-network" [label="3GPP AoIP"];
-    OsmoBSC -> OsmoMGW [label="MGCP"];
-    BTS -> OsmoMGW [label="TRAU/E1",dir=both];
-    OsmoMGW -> "core-network" [label="RTP",dir=both];
-    {rank=same OsmoBSC OsmoMGW}
-    OsmoMGW [color=red];
-}
----
-
 === Software Components

 OsmoMGW contains a variety of different software components, which we’ll
@@ -92,14 +77,14 @@ Transcoding is currently not supported in OsmoMGW.

 === Limitations

-At the moment (November 2020), OsmoMGW implements RTP proxy / RTP bridge
-type endpoints and E1/T1 16k/8k sub-slots with TRAU frames for classic BTS
-support. To the RTP proxy / RTP bridge endpoints two RTP connections can
-be established, which then work as a tandem. E1/T1 endpoints support one
-RTP connection at a time that is associated with a sub-slot on an E1 line.
-We are planning to add further endpoint types for:
+Osmux is not yet supported in OsmoMGW.
+
+At the moment (July 2018), OsmoMGW only implements RTP proxy / RTP bridge
+type endpoints, to each of which two RTP connections can be established.
+We are planning to add endpoint types for:

 - classic E1/T1 timeslots (64kBps alaw/ulaw)
+- classic E1/T1 16k sub-slots with TRAU frames for classic BTS support
 - announcement/playout end-points
 - conference endpoints

@@ -107,8 +92,8 @@ We are planning to add further endpoint types for:

 You can find the OsmoMGW issue tracker and wiki online at

- https://osmocom.org/projects/osmo-mgw
- https://osmocom.org/projects/osmo-mgw/wiki
+- https://osmocom.org/projects/osmomgw
+- https://osmocom.org/projects/osmomgw/wiki

 RFC 3435 for MGCP is located at

--- a/doc/manuals/chapters/qos-example.adoc
+++ b/doc/manuals/chapters/qos-example.adoc
@@ -1,42 +0,0 @@
-==== Full example of QoS for osmo-mgw
-
-In the below example we will show the full set of configuration required
-for both DSCP and PCP differentiation of RTP traffic by osmo-mgw.
-
-What we want to achieve in this example is the following configuration:
-
-.DSCP and PCP assignments for osmo-mgw Abis downlink traffic in this example
-[options="header",width="30%",cols="2,1,1"]
-|===
-|Traffic      |DSCP|PCP
-|RTP    |  46|  6
-|===
-
-. configure the osmo-mgw program to set the DSCP value
-. configure an egrees QoS map to map from priority to PCP
-
-.Example Step 1: add related VTY configuration to `osmo-mgw.cfg`
----
-...
-mgcp
- rtp ip-dscp 46
- rtp socket-priority 6
-...
----
-
-.Example Step 2: egress QoS map to map from socket priority to PCP values
----
-$ sudo ip link set dev eth0.9<1> type vlan egress-qos-map 0:0 5:5 6:6 7:7 <2>
----
-<1> make sure to specify your specific VLAN interface name here instead of `eth0.9`.
-<2> create a egress QoS map that maps the priority value 1:1 to the PCP. We also include the
-    mapping 5:5 and 7:7 from the osmo-bsc example (see <<userman-osmobsc>>) here.
-
-NOTE:: The settings of the `ip` command are volatile and only active until
-the next reboot (or the network device or VLAN is removed).  Please refer to
-the documentation of your specific Linux distribution in order to find out how
-to make such settings persistent by means of an `ifup` hook whenever the interface
-comes up.  For CentOS/RHEL 8 this can e.g. be achieved by means of an `/sbin/ifup-local
-script` (when using `network-scripts` and not NetworkManager).  For Debian or Ubuntu,
-this typically involves adding `up` lines to `/etc/network/interfaces` or a `/etc/network/if-up.d`
-script.
--- a/doc/manuals/osmomgw-usermanual.adoc
+++ b/doc/manuals/osmomgw-usermanual.adoc
@@ -18,14 +18,10 @@ include::./common/chapters/logging.adoc[]

 include::{srcdir}/chapters/configuration.adoc[]

-include::{srcdir}/chapters/mgcp_endpoints.adoc[]
-
 include::{srcdir}/chapters/mgcp_extensions.adoc[]

 include::./common/chapters/osmux/osmux.adoc[]

-include::./common/chapters/qos-dscp-pcp.adoc[]
-
 //include::{srcdir}/chapters/counters.adoc[]

 include::./common/chapters/vty_cpu_sched.adoc[]
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -6,7 +6,6 @@ nobase_include_HEADERS = \
 	osmocom/mgcp_client/mgcp_client.h \
 	osmocom/mgcp_client/mgcp_client_endpoint_fsm.h \
 	osmocom/mgcp_client/mgcp_client_fsm.h \
-	osmocom/mgcp_client/mgcp_client_pool.h \
 	osmocom/mgcp/mgcp.h \
 	osmocom/mgcp/mgcp_common.h \
 	osmocom/mgcp/osmux.h \
--- a/include/osmocom/mgcp/Makefile.am
+++ b/include/osmocom/mgcp/Makefile.am
@@ -13,5 +13,4 @@ noinst_HEADERS = \
 	mgcp_e1.h \
 	mgcp_network.h \
 	mgcp_protocol.h \
-	mgcp_iuup.h \
 	$(NULL)
--- a/include/osmocom/mgcp/mgcp.h
+++ b/include/osmocom/mgcp/mgcp.h
@@ -34,7 +34,6 @@
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
-#include <pthread.h>

 #include "mgcp_ratectr.h"

@@ -63,6 +62,8 @@ struct mgcp_rtp_end;
 #define MGCP_POLICY_REJECT	5
 #define MGCP_POLICY_DEFER	6

+typedef int (*mgcp_change)(struct mgcp_endpoint *endp, int state);
+typedef int (*mgcp_policy)(struct mgcp_endpoint *endp, int state, const char *transaction_id);
 typedef int (*mgcp_reset)(struct mgcp_trunk *cfg);
 typedef int (*mgcp_rqnt)(struct mgcp_endpoint *endp, char tone);

@@ -93,10 +94,9 @@ typedef void (*mgcp_get_format)(struct mgcp_endpoint *endp,
 * This holds information on how to allocate ports
 */
 struct mgcp_port_range {
-	pthread_mutex_t lock;
 	/* addr or NULL to fall-back to default */
-	char bind_addr_v4[INET6_ADDRSTRLEN];
-	char bind_addr_v6[INET6_ADDRSTRLEN];
+	char *bind_addr_v4;
+	char *bind_addr_v6;

 	/* dynamically allocated */
 	int range_start;
@@ -129,9 +129,9 @@ enum mgcp_role {

 struct mgcp_config {
 	int source_port;
-	char local_ip[INET6_ADDRSTRLEN];
-	char source_addr[INET6_ADDRSTRLEN];
-	char call_agent_addr[INET6_ADDRSTRLEN];
+	char *local_ip;
+	char *source_addr;
+	char *call_agent_addr;

 	/* RTP processing */
 	mgcp_processing rtp_processing_cb;
@@ -143,14 +143,17 @@ struct mgcp_config {

 	struct mgcp_port_range net_ports;
 	int endp_dscp;
-	int endp_priority;

 	int force_ptime;

+	mgcp_change change_cb;
+	mgcp_policy policy_cb;
 	mgcp_reset reset_cb;
 	mgcp_rqnt rqnt_cb;
 	void *data;

+	uint32_t last_call_id;
+
 	/* list holding the trunks */
 	struct llist_head trunks;

@@ -159,7 +162,7 @@ struct mgcp_config {
 	/* osmux translator: 0 means disabled, 1 means enabled */
 	int osmux;
 	/* addr to bind the server to */
-	char osmux_addr[INET6_ADDRSTRLEN];
+	char *osmux_addr;
 	/* The BSC-NAT may ask for enabling osmux on demand. This tells us if
 	 * the osmux socket is already initialized.
 	 */
@@ -205,6 +208,5 @@ int mgcp_send_reset_ep(struct mgcp_endpoint *endp);
 int mgcp_send_reset_all(struct mgcp_config *cfg);


-int mgcp_create_bind(const char *source_addr, struct osmo_fd *fd, int port, uint8_t dscp,
-		     uint8_t prio);
-int mgcp_udp_send(int fd, struct osmo_sockaddr *addr, int port, const char *buf, int len);
+int mgcp_create_bind(const char *source_addr, struct osmo_fd *fd, int port);
+int mgcp_udp_send(int fd, struct osmo_sockaddr *addr, int port, char *buf, int len);
--- a/include/osmocom/mgcp/mgcp_codec.h
+++ b/include/osmocom/mgcp/mgcp_codec.h
@@ -17,4 +17,3 @@ int mgcp_codec_decide(struct mgcp_conn_rtp *conn);
 int mgcp_codec_pt_translate(struct mgcp_conn_rtp *conn_src, struct mgcp_conn_rtp *conn_dst, int payload_type);
 const struct mgcp_rtp_codec *mgcp_codec_pt_find_by_subtype_name(struct mgcp_conn_rtp *conn,
 								const char *subtype_name, unsigned int match_nr);
-bool mgcp_codec_amr_is_octet_aligned(const struct mgcp_rtp_codec *codec);
--- a/include/osmocom/mgcp/mgcp_conn.h
+++ b/include/osmocom/mgcp/mgcp_conn.h
@@ -28,7 +28,6 @@
 #include <osmocom/mgcp/osmux.h>
 #include <osmocom/core/linuxlist.h>
 #include <osmocom/core/rate_ctr.h>
-#include <osmocom/gsm/iuup.h>
 #include <inttypes.h>

 #define LOGPCONN(conn, cat, level, fmt, args...) \
@@ -48,7 +47,6 @@ enum mgcp_conn_rtp_type {
 	MGCP_RTP_DEFAULT	= 0,
 	MGCP_OSMUX_BSC,
 	MGCP_OSMUX_BSC_NAT,
-	MGCP_RTP_IUUP,
 };

 /*! Connection type, specifies which member of the union "u" in mgcp_conn
@@ -95,14 +93,6 @@ struct mgcp_conn_rtp {
 		} stats;
 	} osmux;

-	struct {
-		struct osmo_iuup_instance *iui;
-		bool active_init; /* true: Send IuUP Init */
-		int rfci_id_no_data; /* RFCI Id for RFCI NO_DATA (-1 if not available) */
-		bool configured;
-		struct osmo_iuup_rnl_prim *init_ind;
-	} iuup;
-
 	struct rate_ctr_group *rate_ctr_group;
 };

@@ -186,12 +176,6 @@ static inline bool mgcp_conn_rtp_is_osmux(const struct mgcp_conn_rtp *conn) {
 	return conn->type == MGCP_OSMUX_BSC || conn->type == MGCP_OSMUX_BSC_NAT;
 }

-/* Was conn configured to handle Osmux? */
-static inline bool mgcp_conn_rtp_is_iuup(const struct mgcp_conn_rtp *conn)
-{
-	return conn->type == MGCP_RTP_IUUP;
-}
-
 struct mgcp_conn *mgcp_conn_alloc(void *ctx, struct mgcp_endpoint *endp,
 				  enum mgcp_conn_type type, char *name);
 struct mgcp_conn *mgcp_conn_get(struct mgcp_endpoint *endp, const char *id);
--- a/include/osmocom/mgcp/mgcp_endp.h
+++ b/include/osmocom/mgcp/mgcp_endp.h
@@ -25,7 +25,6 @@

 #include <osmocom/core/msgb.h>
 #include <osmocom/gsm/i460_mux.h>
-#include <osmocom/mgcp/mgcp_protocol.h>

 struct sockaddr;
 struct mgcp_conn;
@@ -97,6 +96,9 @@ struct mgcp_endpoint {
 	/*! List of struct mgcp_conn, of the connections active on this endpoint */
 	struct llist_head conns;

+	/*! Backpointer to the MGW configuration */
+	struct mgcp_config *cfg;
+
 	/*! Backpointer to the trunk this endpoint belongs to */
 	struct mgcp_trunk *trunk;

@@ -109,6 +111,10 @@ struct mgcp_endpoint {
 	/*! Last MGCP response (in case re-transmission is required) */
 	char *last_response;

+	/*! Memorize if this endpoint was choosen by the MGW (wildcarded, true)
+	 *   or if the user has choosen the particular endpoint explicitly. */
+	bool wildcarded_req;
+
 	/*! MGCP_X_OSMO_IGN_* flags from 'X-Osmo-IGN:' header */
 	uint32_t x_osmo_ign;

@@ -128,7 +134,6 @@ struct mgcp_endpoint *mgcp_endp_alloc(struct mgcp_trunk *trunk, unsigned int ind
 void mgcp_endp_release(struct mgcp_endpoint *endp);
 int mgcp_endp_claim(struct mgcp_endpoint *endp, const char *callid);
 void mgcp_endp_update(struct mgcp_endpoint *endp);
-bool mgcp_endp_is_wildcarded(const char *epname);
 struct mgcp_endpoint *mgcp_endp_by_name_trunk(int *cause, const char *epname,
 					      const struct mgcp_trunk *trunk);
 struct mgcp_endpoint *mgcp_endp_by_name(int *cause, const char *epname,
@@ -136,7 +141,3 @@ struct mgcp_endpoint *mgcp_endp_by_name(int *cause, const char *epname,
 bool mgcp_endp_avail(struct mgcp_endpoint *endp);
 void mgcp_endp_add_conn(struct mgcp_endpoint *endp, struct mgcp_conn *conn);
 void mgcp_endp_remove_conn(struct mgcp_endpoint *endp, struct mgcp_conn *conn);
-void mgcp_endp_strip_name(char *epname_stripped, const char *epname,
-			 const struct mgcp_trunk *trunk);
-struct mgcp_endpoint *mgcp_endp_find_specific(const char *epname,
-			const struct mgcp_trunk *trunk);
--- a/include/osmocom/mgcp/mgcp_iuup.h
+++ b/include/osmocom/mgcp/mgcp_iuup.h
@@ -1,33 +0,0 @@
-/* IuUP connection functionalitites */
-
-/*
- * (C) 2021 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
- * All Rights Reserved
- *
- * Author: Pau Espin Pedrol
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-#pragma once
-
-#include <osmocom/core/msgb.h>
-
-struct mgcp_conn_rtp;
-
-int mgcp_conn_iuup_init(struct mgcp_conn_rtp *conn_rtp);
-void mgcp_conn_iuup_cleanup(struct mgcp_conn_rtp *conn_rtp);
-int mgcp_conn_iuup_dispatch_rtp(struct msgb *msg);
-int mgcp_conn_iuup_send_rtp(struct mgcp_conn_rtp *conn_src_rtp, struct mgcp_conn_rtp *conn_dest_rtp, struct msgb *msg);
-int mgcp_conn_iuup_send_dummy(struct mgcp_conn_rtp *conn_rtp);
--- a/include/osmocom/mgcp/mgcp_msg.h
+++ b/include/osmocom/mgcp/mgcp_msg.h
@@ -25,12 +25,10 @@
 #pragma once

 #include <stdint.h>
-#include <stdbool.h>

 struct mgcp_conn;
 struct mgcp_parse_data;
 struct mgcp_endpoint;
-struct mgcp_trunk;

 void mgcp_disp_msg(unsigned char *message, unsigned int len, char *preamble);

@@ -41,7 +39,7 @@ int mgcp_parse_header(struct mgcp_parse_data *pdata, char *data);

 int mgcp_parse_osmux_cid(const char *line);

-bool mgcp_check_param(const struct mgcp_endpoint *endp, struct mgcp_trunk *trunk, const char *line);
+int mgcp_check_param(const struct mgcp_endpoint *endp, const char *line);

 int mgcp_verify_call_id(struct mgcp_endpoint *endp, const char *callid);

--- a/include/osmocom/mgcp/mgcp_network.h
+++ b/include/osmocom/mgcp/mgcp_network.h
@@ -7,16 +7,7 @@

 #include <osmocom/mgcp/mgcp.h>

-/* The following constant defines an RTP dummy payload that is used for
- * "UDP Hole Punching" (NAT) */
-static const char rtp_dummy_payload[] = { 0x23 };
-
-/* Check if the data in a given message buffer matches the rtp dummy payload
- * defined above */
-#define mgcp_is_rtp_dummy_payload(msg) \
-	(msgb_length(msg) == sizeof(rtp_dummy_payload) && \
-	memcmp(msgb_data(msg), rtp_dummy_payload, sizeof(rtp_dummy_payload)) == 0)
-
+#define MGCP_DUMMY_LOAD 0x23
 #define RTP_BUF_SIZE	4096

 struct mgcp_rtp_stream_state {
@@ -34,7 +25,7 @@ struct mgcp_rtp_state {

 	struct {
 		/* are we patching the SSRC value? */
-		bool patch_ssrc;
+		int patch_ssrc;
 		/* original SSRC (to which we shall patch any different SSRC) */
 		uint32_t orig_ssrc;
 		/* offset to apply on the sequence number */
@@ -70,6 +61,8 @@ struct mgcp_rtp_state {
 	 * data is just re-used) */
 	uint16_t alt_rtp_tx_sequence;
 	uint32_t alt_rtp_tx_ssrc;
+
+	bool patched_first_rtp_payload; /* FIXME: drop this, see OS#2459 */
 };

 struct mgcp_rtp_codec {
@@ -79,8 +72,8 @@ struct mgcp_rtp_codec {
 	uint32_t frame_duration_den;

 	int payload_type;
-	char audio_name[64];
-	char subtype_name[64];
+	char *audio_name;
+	char *subtype_name;

 	bool param_present;
 	struct mgcp_codec_param param;
@@ -108,8 +101,8 @@ struct mgcp_rtp_end {
 	uint32_t packet_duration_ms;
 	int maximum_packet_time; /* -1: not set */
 	char *fmtp_extra;
-	/* are we transmitting packets (true) or dropping (false) outbound packets */
-	bool output_enabled;
+	/* are we transmitting packets (1) or dropping (0) outbound packets */
+	int output_enabled;
 	/* FIXME: This parameter can be set + printed, but is nowhere used! */
 	int force_output_ptime;

@@ -130,8 +123,6 @@ struct mgcp_rtp_end {
 	char local_addr[INET6_ADDRSTRLEN];
 };

-bool mgcp_rtp_end_remote_addr_available(const struct mgcp_rtp_end *rtp_end);
-
 struct mgcp_rtp_tap {
 	/* is this tap active (1) or not (0) */
 	int enabled;
@@ -152,11 +143,12 @@ void mgcp_cleanup_e1_bridge_cb(struct mgcp_endpoint *endp, struct mgcp_conn *con
 int mgcp_bind_net_rtp_port(struct mgcp_endpoint *endp, int rtp_port,
 			   struct mgcp_conn_rtp *conn);
 void mgcp_free_rtp_port(struct mgcp_rtp_end *end);
-void mgcp_patch_and_count(const struct mgcp_endpoint *endp,
+void mgcp_patch_and_count(struct mgcp_endpoint *endp,
 			  struct mgcp_rtp_state *state,
 			  struct mgcp_rtp_end *rtp_end,
 			  struct osmo_sockaddr *addr, struct msgb *msg);
 void mgcp_get_local_addr(char *addr, struct mgcp_conn_rtp *conn);
+int mgcp_set_ip_tos(int fd, int tos);

 /* payload processing default functions */
 int mgcp_rtp_processing_default(struct mgcp_endpoint *endp, struct mgcp_rtp_end *dst_end,
@@ -172,11 +164,6 @@ void mgcp_get_net_downlink_format_default(struct mgcp_endpoint *endp,
 					  struct mgcp_conn_rtp *conn);

 /* internal RTP Annex A counting */
-void mgcp_rtp_annex_count(const struct mgcp_endpoint *endp, struct mgcp_rtp_state *state,
+void mgcp_rtp_annex_count(struct mgcp_endpoint *endp, struct mgcp_rtp_state *state,
 			const uint16_t seq, const int32_t transit,
-			const uint32_t ssrc, const bool marker_bit);
-
-void rtpconn_rate_ctr_add(struct mgcp_conn_rtp *conn_rtp, struct mgcp_endpoint *endp,
-				 int id, int inc);
-void forward_data_tap(int fd, struct mgcp_rtp_tap *tap, struct msgb *msg);
-uint32_t mgcp_get_current_ts(unsigned codec_rate);
+			const uint32_t ssrc);
--- a/include/osmocom/mgcp/mgcp_protocol.h
+++ b/include/osmocom/mgcp/mgcp_protocol.h
@@ -3,7 +3,7 @@
 /* Internal structure while parsing a request */
 struct mgcp_parse_data {
 	struct mgcp_config *cfg;
-	char *epname;
+	struct mgcp_endpoint *endp;
 	char *trans;
 	char *save;
 };
@@ -16,15 +16,12 @@ struct mgcp_lco {
 	int pkt_period_max; /* time in ms */
 };

-char *mgcp_debug_get_last_endpoint_name(void);
-
 char *get_lco_identifier(const char *options);
 int check_local_cx_options(void *ctx, const char *options);

 struct mgcp_rtp_end;
-struct mgcp_endpoint;
 void mgcp_rtp_end_config(struct mgcp_endpoint *endp, int expect_ssrc_change,
 			 struct mgcp_rtp_end *rtp);

-uint32_t mgcp_rtp_packet_duration(const struct mgcp_endpoint *endp,
-				  const struct mgcp_rtp_end *rtp);
+uint32_t mgcp_rtp_packet_duration(struct mgcp_endpoint *endp,
+				  struct mgcp_rtp_end *rtp);
--- a/include/osmocom/mgcp/mgcp_ratectr.h
+++ b/include/osmocom/mgcp/mgcp_ratectr.h
@@ -1,5 +1,6 @@
 #pragma once

+
 /* Global MCGP general rate counters */
 enum {
 	MGCP_GENERAL_RX_MSGS_TOTAL,
@@ -22,6 +23,7 @@ enum {
 	MGCP_CRCX_FAIL_ALLOC_CONN,
 	MGCP_CRCX_FAIL_NO_REMOTE_CONN_DESC,
 	MGCP_CRCX_FAIL_START_RTP,
+	MGCP_CRCX_FAIL_REJECTED_BY_POLICY,
 	MGCP_CRCX_FAIL_NO_OSMUX,
 	MGCP_CRCX_FAIL_INVALID_CONN_OPTIONS,
 	MGCP_CRCX_FAIL_CODEC_NEGOTIATION,
@@ -44,16 +46,21 @@ enum {
 	MGCP_MDCX_FAIL_INVALID_CONN_OPTIONS,
 	MGCP_MDCX_FAIL_NO_REMOTE_CONN_DESC,
 	MGCP_MDCX_FAIL_START_RTP,
+	MGCP_MDCX_FAIL_REJECTED_BY_POLICY,
+	MGCP_MDCX_DEFERRED_BY_POLICY,
 	MGCP_MDCX_FAIL_AVAIL,
 };

 /* Trunk-global MCGP DLCX related rate counters */
 enum {
 	MGCP_DLCX_SUCCESS,
+	MGCP_DLCX_FAIL_WILDCARD,
 	MGCP_DLCX_FAIL_NO_CONN,
 	MGCP_DLCX_FAIL_INVALID_CALLID,
 	MGCP_DLCX_FAIL_INVALID_CONNID,
 	MGCP_DLCX_FAIL_UNHANDLED_PARAM,
+	MGCP_DLCX_FAIL_REJECTED_BY_POLICY,
+	MGCP_DLCX_DEFERRED_BY_POLICY,
 	MGCP_DLCX_FAIL_AVAIL,
 };

@@ -84,24 +91,5 @@ struct mgcp_ratectr_trunk {
 	struct rate_ctr_group *e1_stats;
 };

-struct mgcp_config;
-struct mgcp_trunk;
-
-int mgcp_ratectr_global_alloc(struct mgcp_config *cfg);
-void mgcp_ratectr_global_free(struct mgcp_config *cfg);
-int mgcp_ratectr_trunk_alloc(struct mgcp_trunk *trunk);
-void mgcp_ratectr_trunk_free(struct mgcp_trunk *trunk);
-
-/* Trunk-global common stat items */
-enum {
-	TRUNK_STAT_ENDPOINTS_TOTAL,
-	TRUNK_STAT_ENDPOINTS_USED,
-};
-
-struct mgcp_stat_trunk {
-	/* Stat item group which contains general status values of the trunk. */
-	struct osmo_stat_item_group *common;
-};
-
-int mgcp_stat_trunk_alloc(struct mgcp_trunk *trunk);
-void mgcp_stat_trunk_free(struct mgcp_trunk *trunk);
+int mgcp_ratectr_global_alloc(void *ctx, struct mgcp_ratectr_global *ratectr);
+int mgcp_ratectr_trunk_alloc(void *ctx, struct mgcp_ratectr_trunk *ratectr);
--- a/include/osmocom/mgcp/mgcp_threads_queue.h
+++ b/include/osmocom/mgcp/mgcp_threads_queue.h
@@ -1,52 +0,0 @@
-/*
- * (C) 2021 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
- * All Rights Reserved
- *
- * Author: Eric Wild
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-#include <stdatomic.h>
-#include <stdbool.h>
-#include <stdlib.h>
-
-struct spsc {
-	atomic_uint readptr;
-	atomic_uint writeptr;
-
-	int efd_r, efd_w; /* eventfds used to block/notify readers/writers */
-
-	int count;
-	int size_per_buf;
-
-	void *buf; /* buffer size count*size_per_buf */
-	uintptr_t data[0]; /* count sized array of pointers to size_per_buf chunks in buf array*/
-};
-
-struct qchan {
-	struct spsc *a;
-	struct spsc *b;
-};
-
-bool spsc_push(struct spsc *q, void *elem);
-bool spsc_pop(struct spsc *q, void *elem);
-ssize_t spsc_prep_pop(struct spsc *q);
-int spsc_get_a_rdfd(struct qchan *q);
-
-struct qchan spsc_chan_init(void *talloc_ctx, unsigned int count, unsigned int size_per_buf);
-struct qchan spsc_chan_init_ex(void *talloc_ctx, unsigned int count, unsigned int size_per_buf, bool blockr_a,
-			       bool blockw_a, bool blockr_b, bool blockw_b);
-void spsc_chan_close(struct qchan *q);
--- a/include/osmocom/mgcp/mgcp_trunk.h
+++ b/include/osmocom/mgcp/mgcp_trunk.h
@@ -1,30 +1,24 @@
 #pragma once

 #include <osmocom/gsm/i460_mux.h>
-#include <osmocom/abis/e1_input.h>
-#include <osmocom/mgcp/mgcp_ratectr.h>
-

 #define LOGPTRUNK(trunk, cat, level, fmt, args...) \
 LOGP(cat, level, "trunk:%u " fmt, \
     trunk ? trunk->trunk_nr : 0, \
     ## args)

+
 enum mgcp_trunk_type {
 	MGCP_TRUNK_VIRTUAL,
 	MGCP_TRUNK_E1,
 };

-extern const struct value_string mgcp_trunk_type_strs[];
-static inline const char *mgcp_trunk_type_strs_str(enum mgcp_trunk_type val)
-{ return get_value_string(mgcp_trunk_type_strs, val); }
-
 struct mgcp_trunk {
 	struct llist_head entry;

 	struct mgcp_config *cfg;

-	unsigned int trunk_nr;
+	int trunk_nr;
 	enum mgcp_trunk_type trunk_type;

 	char *audio_fmtp_extra;
@@ -54,9 +48,8 @@ struct mgcp_trunk {
 	unsigned int number_endpoints;
 	struct mgcp_endpoint **endpoints;

-	/* rate counters and stat items to measure the trunks overall performance and health */
+	/* global rate counters to measure the trunks overall performance and health */
 	struct mgcp_ratectr_trunk ratectr;
-	struct mgcp_stat_trunk stats;

 	union {
 		/* Virtual trunk specific */
@@ -66,20 +59,17 @@ struct mgcp_trunk {
 		/* E1 specific */
 		struct {
 			unsigned int vty_line_nr;
-			bool ts_in_use[NUM_E1_TS-1];
-			struct osmo_i460_timeslot i460_ts[NUM_E1_TS-1];
-			/* Note: on an E1 line TS 0 is devoted to framing and
-			 * alignment and therefore only NUM_E1_TS-1 timeslots
-			 * are available for traffic. */
+			bool ts_in_use[31];
+			struct osmo_i460_timeslot i460_ts[31];
 		} e1;
 	};
 };

-struct mgcp_trunk *mgcp_trunk_alloc(struct mgcp_config *cfg, enum mgcp_trunk_type ttype, unsigned int nr);
+struct mgcp_trunk *mgcp_trunk_alloc(struct mgcp_config *cfg, enum mgcp_trunk_type ttype, int nr);
 int mgcp_trunk_equip(struct mgcp_trunk *trunk);
-struct mgcp_trunk *mgcp_trunk_by_num(const struct mgcp_config *cfg, enum mgcp_trunk_type ttype, unsigned int nr);
+struct mgcp_trunk *mgcp_trunk_by_num(const struct mgcp_config *cfg, enum mgcp_trunk_type ttype, int nr);
 struct mgcp_trunk *mgcp_trunk_by_name(const struct mgcp_config *cfg, const char *epname);
-int e1_trunk_nr_from_epname(unsigned int *trunk_nr, const char *epname);
+int e1_trunk_nr_from_epname(const char *epname);
 struct mgcp_trunk *mgcp_trunk_by_line_num(const struct mgcp_config *cfg, unsigned int num);

 /* The virtual trunk is always created on trunk id 0 for historical reasons,
--- a/include/osmocom/mgcp_client/Makefile.am
+++ b/include/osmocom/mgcp_client/Makefile.am
@@ -4,7 +4,6 @@ BUILT_SOURCES = \

 noinst_HEADERS = \
 	mgcp_client_internal.h \
-	mgcp_client_pool_internal.h \
 	$(NULL)

 mgcp_common.h: $(top_srcdir)/include/osmocom/mgcp/mgcp_common.h
--- a/include/osmocom/mgcp_client/mgcp_client.h
+++ b/include/osmocom/mgcp_client/mgcp_client.h
@@ -26,15 +26,6 @@ struct mgcp_client_conf {
 	/* By default, we are always addressing the MGW with e.g. 'rtpbridge/123@mgw'.
 	 * If this is nonempty, the contained name will be used instead of 'mgw'. */
 	char endpoint_domain_name[MGCP_ENDPOINT_MAXLEN];
-
-	/* The user may configure certain endpoint names that are reset via DLCX
-	 * on startup. Usually this will be one wildcarded endpoint e.g.
-	 * 'rtpbridge/(wildcard)' or a number of specific E1 like e.g.
-	 * 'ds/e1-0/s-3/su16-4' */
-	struct llist_head reset_epnames;
-
-	/* human readable name / description */
-	char *description;
 };

 typedef unsigned int mgcp_trans_id_t;
@@ -49,7 +40,6 @@ enum mgcp_codecs {
 	CODEC_GSMHR_8000_1 = 111,
 	CODEC_AMR_8000_1 = 112,
 	CODEC_AMRWB_16000_1 = 113,
-	CODEC_IUFP = 96,
 };
 /* Note: when new codec types are added, the corresponding value strings
 * in mgcp_client.c (codec_table) must be updated as well. Enumerations
@@ -140,8 +130,6 @@ struct mgcp_client_conf *mgcp_client_conf_actual(struct mgcp_client *mgcp);
 struct mgcp_client *mgcp_client_init(void *ctx,
 				     struct mgcp_client_conf *conf);
 int mgcp_client_connect(struct mgcp_client *mgcp);
-int mgcp_client_connect2(struct mgcp_client *mgcp, unsigned int retry_n_ports);
-void mgcp_client_disconnect(struct mgcp_client *mgcp);

 const char *mgcp_client_remote_addr_str(struct mgcp_client *mgcp);
 uint16_t mgcp_client_remote_port(struct mgcp_client *mgcp);
@@ -177,5 +165,3 @@ unsigned int map_codec_to_pt(const struct ptmap *ptmap, unsigned int ptmap_len,
 			     enum mgcp_codecs codec);
 enum mgcp_codecs map_pt_to_codec(struct ptmap *ptmap, unsigned int ptmap_len,
 				 unsigned int pt);
-
-const char *mgcp_client_name(const struct mgcp_client *mgcp);
--- a/include/osmocom/mgcp_client/mgcp_client_endpoint_fsm.h
+++ b/include/osmocom/mgcp_client/mgcp_client_endpoint_fsm.h
@@ -23,8 +23,6 @@ const struct mgcp_conn_peer *osmo_mgcpc_ep_ci_get_rtp_info(const struct osmo_mgc
 bool osmo_mgcpc_ep_ci_get_crcx_info_to_sockaddr(const struct osmo_mgcpc_ep_ci *ci, struct sockaddr_storage *dest);
 bool osmo_mgcpc_ep_ci_get_crcx_info_to_osmux_cid(const struct osmo_mgcpc_ep_ci *ci, uint8_t* cid);

-const struct mgcp_conn_peer *osmo_mgcpc_ep_ci_get_remote_rtp_info(const struct osmo_mgcpc_ep_ci *ci);
-
 void osmo_mgcpc_ep_ci_request(struct osmo_mgcpc_ep_ci *ci,
 			      enum mgcp_verb verb, const struct mgcp_conn_peer *verb_info,
 			      struct osmo_fsm_inst *notify,
@@ -47,7 +45,6 @@ void osmo_mgcpc_ep_clear(struct osmo_mgcpc_ep *ep);
 const char *osmo_mgcpc_ep_name(const struct osmo_mgcpc_ep *ep);
 const char *osmo_mgcpc_ep_ci_name(const struct osmo_mgcpc_ep_ci *ci);
 const char *osmo_mgcpc_ep_ci_id(const struct osmo_mgcpc_ep_ci *ci);
-struct mgcp_client *osmo_mgcpc_ep_client(const struct osmo_mgcpc_ep *ep);

 extern const struct value_string osmo_mgcp_verb_names[];
 static inline const char *osmo_mgcp_verb_name(enum mgcp_verb val)
--- a/include/osmocom/mgcp_client/mgcp_client_fsm.h
+++ b/include/osmocom/mgcp_client/mgcp_client_fsm.h
@@ -69,6 +69,5 @@ int mgcp_conn_modify(struct osmo_fsm_inst *fi, uint32_t parent_evt, struct mgcp_
 void mgcp_conn_delete(struct osmo_fsm_inst *fi);

 const char *mgcp_conn_get_ci(struct osmo_fsm_inst *fi);
-struct mgcp_client *mgcp_conn_get_client(struct osmo_fsm_inst *fi);

 const char *osmo_mgcpc_conn_peer_name(const struct mgcp_conn_peer *info);
--- a/include/osmocom/mgcp_client/mgcp_client_internal.h
+++ b/include/osmocom/mgcp_client/mgcp_client_internal.h
@@ -4,19 +4,12 @@

 #define MSGB_CB_MGCP_TRANS_ID 0

-/* Struct that holds one endpoint name */
-struct reset_ep {
-	struct llist_head list;
-	char name[MGCP_ENDPOINT_MAXLEN];
-};
-
 struct mgcp_client {
 	struct mgcp_client_conf actual;
 	struct osmo_wqueue wq;
 	mgcp_trans_id_t next_trans_id;
 	struct llist_head responses_pending;
 	struct llist_head inuse_endpoints;
-	struct mgcp_client_pool *pool;
 };

 struct mgcp_inuse_endpoint {
--- a/include/osmocom/mgcp_client/mgcp_client_pool.h
+++ b/include/osmocom/mgcp_client/mgcp_client_pool.h
@@ -1,11 +0,0 @@
-#pragma once
-
-struct mgcp_client;
-struct mgcp_client_pool;
-
-struct mgcp_client_pool *mgcp_client_pool_alloc(void *talloc_ctx);
-void mgcp_client_pool_vty_init(int parent_node, int mgw_node, const char *indent, struct mgcp_client_pool *pool);
-unsigned int mgcp_client_pool_connect(struct mgcp_client_pool *pool);
-void mgcp_client_pool_register_single(struct mgcp_client_pool *pool, struct mgcp_client *mgcp_client);
-struct mgcp_client *mgcp_client_pool_get(struct mgcp_client_pool *pool);
-void mgcp_client_pool_put(struct mgcp_client *mgcp_client);
--- a/include/osmocom/mgcp_client/mgcp_client_pool_internal.h
+++ b/include/osmocom/mgcp_client/mgcp_client_pool_internal.h
@@ -1,45 +0,0 @@
-#pragma once
-
-/* Struct to handle a member of a pool of MGWs. */
-struct mgcp_client_pool_member {
-	struct llist_head list;
-
-	/* Reference number assinged by VTY. This number is used to manage the pool from the VTY and to identify it in
-	 * the log. */
-	unsigned int nr;
-
-	/* MGCP client configuration, this is not the running configuration, when mgcp_client_init() is executed, a
-	 * copy of this config is created. */
-	struct mgcp_client_conf conf;
-
-	/* MGCP client descriptor, will be automatically allocated when mgcp_client_pool_connect() is called. (the MGCP
-	 * client is connected when this pointer is populated) */
-	struct mgcp_client *client;
-
-	/* A pool member may be set as 'blocked' from the VTY, this means that the pool member may still work and serve
-	 * ongoing calls, but it won't be picked from the pool anymore. */
-	bool blocked;
-
-	/* Reference counter to count how often this pool member is currently picked. */
-	unsigned int refcount;
-};
-
-/* Struct to handle a pool of MGWs. (Use _pool functions) */
-struct mgcp_client_pool {
-
-	/* A pointer to a 'single' mgcp client. This is a non-pooled MGCP client that is configured using
-	 * mgcp_client_vty_init() and actively registered by the API user using mgcp_client_pool_register_single() */
-	struct mgcp_client *mgcp_client_single;
-
-	/* A list that manages the pool members (see above) */
-	struct llist_head pool;
-
-	/* String to use for indentation when writing the configuration file to the VTY. This field is populated by
-	 * mgcp_client_pool_vty_init() */
-	char *vty_indent;
-
-	/* VTY node specification used with this pool. This field is populated by mgcp_client_pool_vty_init() */
-	struct cmd_node *vty_node;
-};
-
-const char *mgcp_client_pool_member_name(const struct mgcp_client_pool_member *pool_member);
--- a/m4/ax_check_compile_flag.m4
+++ b/m4/ax_check_compile_flag.m4
@@ -0,0 +1,74 @@
+# ===========================================================================
+#   http://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT])
+#
+# DESCRIPTION
+#
+#   Check whether the given FLAG works with the current language's compiler
+#   or gives an error.  (Warnings, however, are ignored)
+#
+#   ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
+#   success/failure.
+#
+#   If EXTRA-FLAGS is defined, it is added to the current language's default
+#   flags (e.g. CFLAGS) when the check is done.  The check is thus made with
+#   the flags: "CFLAGS EXTRA-FLAGS FLAG".  This can for example be used to
+#   force the compiler to issue an error when a bad flag is given.
+#
+#   INPUT gives an alternative input source to AC_COMPILE_IFELSE.
+#
+#   NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
+#   macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
+#   Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
+#
+#   This program is free software: you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation, either version 3 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License along
+#   with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+#serial 4
+
+AC_DEFUN([AX_CHECK_COMPILE_FLAG],
+[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
+AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
+AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
+  ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
+  _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
+  AC_COMPILE_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
+    [AS_VAR_SET(CACHEVAR,[yes])],
+    [AS_VAR_SET(CACHEVAR,[no])])
+  _AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])
+AS_VAR_IF(CACHEVAR,yes,
+  [m4_default([$2], :)],
+  [m4_default([$3], :)])
+AS_VAR_POPDEF([CACHEVAR])dnl
+])dnl AX_CHECK_COMPILE_FLAGS
--- a/src/libosmo-mgcp-client/Makefile.am
+++ b/src/libosmo-mgcp-client/Makefile.am
@@ -9,7 +9,6 @@ AM_CFLAGS = \
 	-Wall \
 	$(LIBOSMOCORE_CFLAGS) \
 	$(LIBOSMOVTY_CFLAGS) \
-	$(LIBOSMOABIS_CFLAGS) \
 	$(COVERAGE_CFLAGS) \
 	$(NULL)

@@ -21,7 +20,7 @@ AM_LDFLAGS = \

 # This is not at all related to the release version, but a range of supported
 # API versions. Read TODO_RELEASE in the source tree's root!
-MGCP_CLIENT_LIBVERSION=9:0:0
+MGCP_CLIENT_LIBVERSION=7:0:1

 lib_LTLIBRARIES = \
 	libosmo-mgcp-client.la \
@@ -32,7 +31,6 @@ libosmo_mgcp_client_la_SOURCES = \
 	mgcp_client_vty.c \
 	mgcp_client_fsm.c \
 	mgcp_client_endpoint_fsm.c \
-	mgcp_client_pool.c \
 	$(NULL)

 libosmo_mgcp_client_la_LDFLAGS = $(AM_LDFLAGS) -version-info $(MGCP_CLIENT_LIBVERSION)
--- a/src/libosmo-mgcp-client/mgcp_client.c
+++ b/src/libosmo-mgcp-client/mgcp_client.c
@@ -30,8 +30,6 @@
 #include <osmocom/mgcp_client/mgcp_client.h>
 #include <osmocom/mgcp_client/mgcp_client_internal.h>

-#include <osmocom/abis/e1_input.h>
-
 #include <netinet/in.h>
 #include <arpa/inet.h>

@@ -46,9 +44,6 @@
 #define OSMUX_CID_MAX 255 /* FIXME: use OSMUX_CID_MAX from libosmo-netif? */
 #endif

-#define LOGPMGW(mgcp, level, fmt, args...) \
-LOGP(DLMGCP, level, "MGW(%s) " fmt, mgcp_client_name(mgcp), ## args)
-
 /* Codec descripton for dynamic payload types (SDP) */
 const struct value_string osmo_mgcpc_codec_names[] = {
 	{ CODEC_PCMU_8000_1, "PCMU/8000/1" },
@@ -59,7 +54,6 @@ const struct value_string osmo_mgcpc_codec_names[] = {
 	{ CODEC_GSMHR_8000_1, "GSM-HR-08/8000/1" },
 	{ CODEC_AMR_8000_1, "AMR/8000/1" },
 	{ CODEC_AMRWB_16000_1, "AMR-WB/16000/1" },
-	{ CODEC_IUFP, "VND.3GPP.IUFP/16000" },
 	{ 0, NULL },
 };

@@ -73,6 +67,7 @@ static char *extract_codec_name(const char *str)
 	if (!str)
 		return NULL;

+	/* FIXME osmo_strlcpy */
 	osmo_strlcpy(buf, str, sizeof(buf));

 	for (i = 0; i < strlen(buf); i++) {
@@ -193,7 +188,7 @@ enum mgcp_codecs map_pt_to_codec(struct ptmap *ptmap, unsigned int ptmap_len,
 	return pt;
 }

-/*! Initialize MGCP client configuration struct with default values.
+/*! Initalize MGCP client configuration struct with default values.
 *  \param[out] conf Client configuration.*/
 void mgcp_client_conf_init(struct mgcp_client_conf *conf)
 {
@@ -204,8 +199,6 @@ void mgcp_client_conf_init(struct mgcp_client_conf *conf)
 		.remote_addr = NULL,
 		.remote_port = -1,
 	};
-
-	INIT_LLIST_HEAD(&conf->reset_epnames);
 }

 static void mgcp_client_handle_response(struct mgcp_client *mgcp,
@@ -213,13 +206,14 @@ static void mgcp_client_handle_response(struct mgcp_client *mgcp,
 					struct mgcp_response *response)
 {
 	if (!pending) {
-		LOGPMGW(mgcp, LOGL_ERROR, "Cannot handle NULL response\n");
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "Cannot handle NULL response\n");
 		return;
 	}
 	if (pending->response_cb)
 		pending->response_cb(response, pending->priv);
 	else
-		LOGPMGW(mgcp, LOGL_DEBUG, "MGCP response ignored (NULL cb)\n");
+		LOGP(DLMGCP, LOGL_DEBUG, "MGCP response ignored (NULL cb)\n");
 	talloc_free(pending);
 }

@@ -676,25 +670,23 @@ int mgcp_client_rx(struct mgcp_client *mgcp, struct msgb *msg)

 	rc = mgcp_response_parse_head(r, msg);
 	if (rc) {
-		LOGPMGW(mgcp, LOGL_ERROR, "Cannot parse MGCP response (head)\n");
+		LOGP(DLMGCP, LOGL_ERROR, "Cannot parse MGCP response (head)\n");
 		rc = 1;
 		goto error;
 	}

-	LOGPMGW(mgcp, LOGL_DEBUG, "MGCP client: Rx %d %u %s\n",
-	     r->head.response_code, r->head.trans_id, r->head.comment);
-
 	rc = parse_head_params(r);
 	if (rc) {
-		LOGPMGW(mgcp, LOGL_ERROR, "Cannot parse MGCP response (head parameters)\n");
+		LOGP(DLMGCP, LOGL_ERROR, "Cannot parse MGCP response (head parameters)\n");
 		rc = 1;
 		goto error;
 	}

 	pending = mgcp_client_response_pending_get(mgcp, r->head.trans_id);
 	if (!pending) {
-		LOGPMGW(mgcp, LOGL_ERROR, "Cannot find matching MGCP transaction for trans_id %d\n",
-			r->head.trans_id);
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "Cannot find matching MGCP transaction for trans_id %d\n",
+		     r->head.trans_id);
 		rc = -ENOENT;
 		goto error;
 	}
@@ -715,19 +707,19 @@ static int mgcp_do_read(struct osmo_fd *fd)

 	msg = msgb_alloc_headroom(4096, 128, "mgcp_from_gw");
 	if (!msg) {
-		LOGPMGW(mgcp, LOGL_ERROR, "Failed to allocate MGCP message.\n");
+		LOGP(DLMGCP, LOGL_ERROR, "Failed to allocate MGCP message.\n");
 		return -1;
 	}

 	ret = read(fd->fd, msg->data, 4096 - 128);
 	if (ret <= 0) {
-		LOGPMGW(mgcp, LOGL_ERROR, "Failed to read: %s: %d='%s'\n",
-		     osmo_sock_get_name2(fd->fd), errno, strerror(errno));
+		LOGP(DLMGCP, LOGL_ERROR, "Failed to read: %s: %d='%s'\n", osmo_sock_get_name2(fd->fd),
+		     errno, strerror(errno));

 		msgb_free(msg);
 		return -1;
 	} else if (ret > 4096 - 128) {
-		LOGPMGW(mgcp, LOGL_ERROR, "Too much data: %s: %d\n", osmo_sock_get_name2(fd->fd), ret);
+		LOGP(DLMGCP, LOGL_ERROR, "Too much data: %s: %d\n", osmo_sock_get_name2(fd->fd), ret);
 		msgb_free(msg);
 		return -1;
 	}
@@ -741,17 +733,15 @@ static int mgcp_do_read(struct osmo_fd *fd)
 static int mgcp_do_write(struct osmo_fd *fd, struct msgb *msg)
 {
 	int ret;
-	struct mgcp_client *mgcp = fd->data;

-	LOGPMGW(mgcp, LOGL_DEBUG, "Tx MGCP: %s: len=%u '%s'...\n",
-		osmo_sock_get_name2(fd->fd), msg->len,
-		osmo_escape_str((const char *)msg->data, OSMO_MIN(42, msg->len)));
+	LOGP(DLMGCP, LOGL_DEBUG, "Tx MGCP: %s: len=%u '%s'...\n",
+	     osmo_sock_get_name2(fd->fd), msg->len, osmo_escape_str((const char*)msg->data, OSMO_MIN(42, msg->len)));

 	ret = write(fd->fd, msg->data, msg->len);
 	if (ret != msg->len)
-		LOGPMGW(mgcp, LOGL_ERROR, "Failed to Tx MGCP: %s: %d='%s'; msg: len=%u '%s'...\n",
-			osmo_sock_get_name2(fd->fd), errno, strerror(errno),
-			msg->len, osmo_escape_str((const char *)msg->data, OSMO_MIN(42, msg->len)));
+		LOGP(DLMGCP, LOGL_ERROR, "Failed to Tx MGCP: %s: %d='%s'; msg: len=%u '%s'...\n",
+		     osmo_sock_get_name2(fd->fd), errno, strerror(errno),
+		     msg->len, osmo_escape_str((const char*)msg->data, OSMO_MIN(42, msg->len)));
 	return ret;
 }

@@ -759,8 +749,6 @@ struct mgcp_client *mgcp_client_init(void *ctx,
 				     struct mgcp_client_conf *conf)
 {
 	struct mgcp_client *mgcp;
-	struct reset_ep *reset_ep;
-	struct reset_ep *actual_reset_ep;

 	mgcp = talloc_zero(ctx, struct mgcp_client);
 	if (!mgcp)
@@ -784,115 +772,62 @@ struct mgcp_client *mgcp_client_init(void *ctx,
 	if (osmo_strlcpy(mgcp->actual.endpoint_domain_name, conf->endpoint_domain_name,
 			 sizeof(mgcp->actual.endpoint_domain_name))
 	    >= sizeof(mgcp->actual.endpoint_domain_name)) {
-		LOGPMGW(mgcp, LOGL_ERROR, "MGCP client: endpoint domain name is too long, max length is %zu: '%s'\n",
-			sizeof(mgcp->actual.endpoint_domain_name) - 1, conf->endpoint_domain_name);
+		LOGP(DLMGCP, LOGL_ERROR, "MGCP client: endpoint domain name is too long, max length is %zu: '%s'\n",
+		     sizeof(mgcp->actual.endpoint_domain_name) - 1, conf->endpoint_domain_name);
 		talloc_free(mgcp);
 		return NULL;
 	}
-	LOGPMGW(mgcp, LOGL_NOTICE, "MGCP client: using endpoint domain '@%s'\n", mgcp_client_endpoint_domain(mgcp));
-
-	INIT_LLIST_HEAD(&mgcp->actual.reset_epnames);
-	llist_for_each_entry(reset_ep, &conf->reset_epnames, list) {
-		actual_reset_ep = talloc_memdup(mgcp, reset_ep, sizeof(*reset_ep));
-		llist_add_tail(&actual_reset_ep->list, &mgcp->actual.reset_epnames);
-	}
-
-	if (conf->description)
-		mgcp->actual.description = talloc_strdup(mgcp, conf->description);
+	LOGP(DLMGCP, LOGL_NOTICE, "MGCP client: using endpoint domain '@%s'\n", mgcp_client_endpoint_domain(mgcp));

 	return mgcp;
 }

-static int init_socket(struct mgcp_client *mgcp, unsigned int retry_n_ports)
+static int init_socket(struct mgcp_client *mgcp)
 {
 	int rc;
 	struct osmo_wqueue *wq;
-	unsigned int i;
+	int i;

 	wq = &mgcp->wq;

-	for (i = 0; i < retry_n_ports + 1; i++) {
+	for (i = 0; i < 100; i++) {

-		/* Initialize socket with the currently configured port number */
+		/* Initalize socket with the currently configured port
+		 * number */
 		rc = osmo_sock_init2_ofd(&wq->bfd, AF_UNSPEC, SOCK_DGRAM, IPPROTO_UDP, mgcp->actual.local_addr,
 					 mgcp->actual.local_port, mgcp->actual.remote_addr, mgcp->actual.remote_port,
 					 OSMO_SOCK_F_BIND | OSMO_SOCK_F_CONNECT);
 		if (rc > 0)
 			return rc;

-		/* If there is a different port than the default port configured then we assume that the user has
-		 * chosen that port conciously and we will not try to resolve this by silently choosing a different
-		 * port. */
+		/* If there is a different port than the default port
+		 * configured then we assume that the user has choosen
+		 * that port conciously and we will not try to resolve
+		 * this by silently choosing a different port. */
 		if (mgcp->actual.local_port != MGCP_CLIENT_LOCAL_PORT_DEFAULT && i == 0)
 			return -EINVAL;

-		if (i == retry_n_ports) {
-			/* Last try failed */
-			LOGPMGW(mgcp, LOGL_NOTICE, "Failed to bind to %s:%d -- check configuration!\n",
-			     mgcp->actual.local_addr ? mgcp->actual.local_addr : "(any)", mgcp->actual.local_port);
-			if (retry_n_ports == 0)
-				return -EINVAL;
-		} else {
-			/* Choose a new port number to try next */
-			LOGPMGW(mgcp, LOGL_NOTICE,
-			     "Failed to bind to %s:%d, retrying with port %d -- check configuration!\n",
-			     mgcp->actual.local_addr ? mgcp->actual.local_addr : "(any)", mgcp->actual.local_port,
-			     mgcp->actual.local_port + 1);
-			mgcp->actual.local_port++;
-		}
+		/* Choose a new port number to try next */
+		LOGP(DLMGCP, LOGL_NOTICE,
+		     "MGCPGW failed to bind to %s:%u, retrying with port %u\n",
+		     mgcp->actual.local_addr, mgcp->actual.local_port, mgcp->actual.local_port + 1);
+		mgcp->actual.local_port++;
 	}

-	LOGPMGW(mgcp, LOGL_FATAL, "Failed to find a port to bind on %u times -- check configuration!\n", i);
+	LOGP(DLMGCP, LOGL_FATAL, "MGCPGW failed to find a port to bind on %i times.\n", i);
 	return -EINVAL;
 }

-/* Safely ignore the MGCP response to the DLCX sent via _mgcp_client_send_dlcx() */
-static void _ignore_mgcp_response(struct mgcp_response *response, void *priv) { }
-
-/* Format DLCX message (fire and forget) and send it off to the MGW */
-static void _mgcp_client_send_dlcx(struct mgcp_client *mgcp, const char *epname)
-{
-	struct msgb *msgb_dlcx;
-	struct mgcp_msg mgcp_msg_dlcx = {
-		.verb = MGCP_VERB_DLCX,
-		.presence = MGCP_MSG_PRESENCE_ENDPOINT,
-	};
-	osmo_strlcpy(mgcp_msg_dlcx.endpoint, epname, sizeof(mgcp_msg_dlcx.endpoint));
-	msgb_dlcx = mgcp_msg_gen(mgcp, &mgcp_msg_dlcx);
-	mgcp_client_tx(mgcp, msgb_dlcx, &_ignore_mgcp_response, NULL);
-}
-
-static const char *_mgcp_client_name_append_domain(const struct mgcp_client *mgcp, const char *name)
-{
-	static char endpoint[MGCP_ENDPOINT_MAXLEN];
-	int rc;
-
-	rc = snprintf(endpoint, sizeof(endpoint), "%s@%s", name, mgcp_client_endpoint_domain(mgcp));
-	if (rc > sizeof(endpoint) - 1) {
-		LOGPMGW(mgcp, LOGL_ERROR, "MGCP endpoint exceeds maximum length of %zu: '%s@%s'\n",
-			sizeof(endpoint) - 1, name, mgcp_client_endpoint_domain(mgcp));
-		return NULL;
-	}
-	if (rc < 1) {
-		LOGPMGW(mgcp, LOGL_ERROR, "Cannot compose MGCP endpoint name\n");
-		return NULL;
-	}
-	return endpoint;
-}
-
-/*! Initialize client connection (opens socket)
+/*! Initalize client connection (opens socket only, no request is sent yet)
 *  \param[in,out] mgcp MGCP client descriptor.
- *  \param[in] retry_n_ports number of consecutive local ports that should be used to retry on failure.
 *  \returns 0 on success, -EINVAL on error. */
-int mgcp_client_connect2(struct mgcp_client *mgcp, unsigned int retry_n_ports)
+int mgcp_client_connect(struct mgcp_client *mgcp)
 {
 	struct osmo_wqueue *wq;
 	int rc;
-	struct reset_ep *reset_ep;
-	const char *epname;

 	if (!mgcp) {
-		LOGPMGW(mgcp, LOGL_FATAL, "Client not initialized properly\n");
+		LOGP(DLMGCP, LOGL_FATAL, "MGCPGW client not initialized properly\n");
 		return -EINVAL;
 	}

@@ -903,25 +838,18 @@ int mgcp_client_connect2(struct mgcp_client *mgcp, unsigned int retry_n_ports)

 	osmo_fd_setup(&wq->bfd, -1, OSMO_FD_READ, osmo_wqueue_bfd_cb, mgcp, 0);

-	rc = init_socket(mgcp, retry_n_ports);
+	rc = init_socket(mgcp);
 	if (rc < 0) {
-		LOGPMGW(mgcp, LOGL_FATAL,
-		     "Failed to initialize socket %s:%u -> %s:%u for MGW: %s\n",
-		     mgcp->actual.local_addr ? mgcp->actual.local_addr : "(any)", mgcp->actual.local_port,
-		     mgcp->actual.remote_addr ? mgcp->actual.local_addr : "(any)", mgcp->actual.remote_port,
-		     strerror(errno));
+		LOGP(DLMGCP, LOGL_FATAL,
+		     "Failed to initialize socket %s:%u -> %s:%u for MGCP GW: %s\n",
+		     mgcp->actual.local_addr, mgcp->actual.local_port,
+		     mgcp->actual.remote_addr, mgcp->actual.remote_port, strerror(errno));
 		goto error_close_fd;
 	}

-	LOGPMGW(mgcp, LOGL_INFO, "MGW connection: %s\n", osmo_sock_get_name2(wq->bfd.fd));

-	/* If configured, send a DLCX message to the endpoints that are configured to
-	 * be reset on startup. Usually this is a wildcarded endpoint. */
-	llist_for_each_entry(reset_ep, &mgcp->actual.reset_epnames, list) {
-		epname = _mgcp_client_name_append_domain(mgcp, reset_ep->name);
-		LOGPMGW(mgcp, LOGL_INFO, "Sending DLCX to: %s\n", epname);
-		_mgcp_client_send_dlcx(mgcp, epname);
-	}
+	LOGP(DLMGCP, LOGL_INFO, "MGCP GW connection: %s\n", osmo_sock_get_name2(wq->bfd.fd));
+
 	return 0;
 error_close_fd:
 	close(wq->bfd.fd);
@@ -929,35 +857,6 @@ error_close_fd:
 	return rc;
 }

-/*! Initialize client connection (opens socket)
- *  \param[in,out] mgcp MGCP client descriptor.
- *  \returns 0 on success, -EINVAL on error. */
-int mgcp_client_connect(struct mgcp_client *mgcp)
-{
-	return mgcp_client_connect2(mgcp, 99);
-}
-
-/*! Terminate client connection
- *  \param[in,out] mgcp MGCP client descriptor.
- *  \returns 0 on success, -EINVAL on error. */
-void mgcp_client_disconnect(struct mgcp_client *mgcp)
-{
-	struct osmo_wqueue *wq;
-
-	if (!mgcp) {
-		LOGP(DLMGCP, LOGL_FATAL, "MGCP client not initialized properly\n");
-		return;
-	}
-
-	wq = &mgcp->wq;
-	osmo_wqueue_clear(wq);
-	LOGPMGW(mgcp, LOGL_INFO, "MGCP association: %s -- closed!\n", osmo_sock_get_name2(wq->bfd.fd));
-	close(wq->bfd.fd);
-	wq->bfd.fd = -1;
-	if (osmo_fd_is_registered(&wq->bfd))
-		osmo_fd_unregister(&wq->bfd);
-}
-
 /*! Get the IP-Aaddress of the associated MGW as string.
 *  \param[in] mgcp MGCP client descriptor.
 *  \returns a pointer to the address string. */
@@ -990,6 +889,24 @@ const char *mgcp_client_endpoint_domain(const struct mgcp_client *mgcp)
 	return mgcp->actual.endpoint_domain_name[0] ? mgcp->actual.endpoint_domain_name : "mgw";
 }

+static const char *_mgcp_client_name_append_domain(const struct mgcp_client *mgcp, char *name)
+{
+	static char endpoint[MGCP_ENDPOINT_MAXLEN];
+	int rc;
+
+	rc = snprintf(endpoint, sizeof(endpoint), "%s@%s", name, mgcp_client_endpoint_domain(mgcp));
+	if (rc > sizeof(endpoint) - 1) {
+		LOGP(DLMGCP, LOGL_ERROR, "MGCP endpoint exceeds maximum length of %zu: '%s@%s'\n",
+		     sizeof(endpoint) - 1, name, mgcp_client_endpoint_domain(mgcp));
+		return NULL;
+	}
+	if (rc < 1) {
+		LOGP(DLMGCP, LOGL_ERROR, "Cannot compose MGCP endpoint name\n");
+		return NULL;
+	}
+	return endpoint;
+}
+
 /*! Compose endpoint name for a wildcarded request to the virtual trunk
 *  \param[in] mgcp MGCP client descriptor.
 *  \returns string containing the endpoint name (e.g. rtpbridge\*@mgw) */
@@ -1021,7 +938,7 @@ const char *mgcp_client_e1_epname(void *ctx, const struct mgcp_client *mgcp, uin
 	    talloc_asprintf(ctx, "ds/e1-%u/s-%u/su%u-%u@%s", trunk_id, ts, rate, offset,
 			    mgcp_client_endpoint_domain(mgcp));
 	if (!epname) {
-		LOGPMGW(mgcp, LOGL_ERROR, "Cannot compose MGCP e1-endpoint name!\n");
+		LOGP(DLMGCP, LOGL_ERROR, "Cannot compose MGCP e1-endpoint name!\n");
 		return NULL;
 	}

@@ -1031,19 +948,18 @@ const char *mgcp_client_e1_epname(void *ctx, const struct mgcp_client *mgcp, uin
 			rate_offs_valid = true;
 	}
 	if (!rate_offs_valid) {
-		LOGPMGW(mgcp, LOGL_ERROR,
-			"Cannot compose MGCP e1-endpoint name (%s), rate(%u)/offset(%u) combination is invalid!\n",
-			epname, rate, offset);
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "Cannot compose MGCP e1-endpoint name (%s), rate(%u)/offset(%u) combination is invalid!\n", epname,
+		     rate, offset);
 		talloc_free(epname);
 		return NULL;
 	}

 	/* An E1 line has a maximum of 32 timeslots, while the first (ts=0) is
 	 * reserverd for framing and alignment, so we can not use it here. */
-	if (ts == 0 || ts > NUM_E1_TS-1) {
-		LOGPMGW(mgcp, LOGL_ERROR,
-			"Cannot compose MGCP e1-endpoint name (%s), E1-timeslot number (%u) is invalid!\n",
-			epname, ts);
+	if (ts == 0 || ts > 31) {
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "Cannot compose MGCP e1-endpoint name (%s), E1-timeslot number (%u) is invalid!\n", epname, ts);
 		talloc_free(epname);
 		return NULL;
 	}
@@ -1071,7 +987,7 @@ struct mgcp_response_pending * mgcp_client_pending_add(
 	return pending;
 }

-/* Send the MGCP message in msg to the MGW and handle a response with
+/* Send the MGCP message in msg to the MGCP GW and handle a response with
 * response_cb. NOTE: the response_cb still needs to call
 * mgcp_response_parse_params(response) to get the parsed parameters -- to
 * potentially save some CPU cycles, only the head line has been parsed when
@@ -1088,8 +1004,8 @@ int mgcp_client_tx(struct mgcp_client *mgcp, struct msgb *msg,

 	trans_id = msg->cb[MSGB_CB_MGCP_TRANS_ID];
 	if (!trans_id) {
-		LOGPMGW(mgcp, LOGL_ERROR,
-			"Unset transaction id in mgcp send request\n");
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "Unset transaction id in mgcp send request\n");
 		talloc_free(msg);
 		return -EINVAL;
 	}
@@ -1104,9 +1020,9 @@ int mgcp_client_tx(struct mgcp_client *mgcp, struct msgb *msg,
 	}

 	if (msgb_l2len(msg) > 4096) {
-		LOGPMGW(mgcp, LOGL_ERROR,
-			"Cannot send, MGCP message too large: %u\n",
-			msgb_l2len(msg));
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "Cannot send, MGCP message too large: %u\n",
+		     msgb_l2len(msg));
 		msgb_free(msg);
 		rc = -EINVAL;
 		goto mgcp_tx_error;
@@ -1114,12 +1030,12 @@ int mgcp_client_tx(struct mgcp_client *mgcp, struct msgb *msg,

 	rc = osmo_wqueue_enqueue(&mgcp->wq, msg);
 	if (rc) {
-		LOGPMGW(mgcp, LOGL_FATAL, "Could not queue message to MGW\n");
+		LOGP(DLMGCP, LOGL_FATAL, "Could not queue message to MGCP GW\n");
 		msgb_free(msg);
 		goto mgcp_tx_error;
 	} else
-		LOGPMGW(mgcp, LOGL_DEBUG, "Queued %u bytes for MGW\n",
-			msgb_l2len(msg));
+		LOGP(DLMGCP, LOGL_DEBUG, "Queued %u bytes for MGCP GW\n",
+		     msgb_l2len(msg));
 	return 0;

 mgcp_tx_error:
@@ -1146,10 +1062,10 @@ int mgcp_client_cancel(struct mgcp_client *mgcp, mgcp_trans_id_t trans_id)
 	struct mgcp_response_pending *pending = mgcp_client_response_pending_get(mgcp, trans_id);
 	if (!pending) {
 		/*! Note: it is not harmful to cancel a transaction twice. */
-		LOGPMGW(mgcp, LOGL_ERROR, "Cannot cancel, no such transaction: %u\n", trans_id);
+		LOGP(DLMGCP, LOGL_ERROR, "Cannot cancel, no such transaction: %u\n", trans_id);
 		return -ENOENT;
 	}
-	LOGPMGW(mgcp, LOGL_DEBUG, "Canceled transaction %u\n", trans_id);
+	LOGP(DLMGCP, LOGL_DEBUG, "Canceled transaction %u\n", trans_id);
 	talloc_free(pending);
 	return 0;
 	/*! We don't really need to clean up the wqueue: In all sane cases, the msgb has already been sent
@@ -1187,40 +1103,30 @@ static int add_lco(struct msgb *msg, struct mgcp_msg *mgcp_msg)
 	const char *codec;
 	unsigned int pt;

-	rc |= msgb_printf(msg, "L:");
+	rc += msgb_printf(msg, "L:");

 	if (mgcp_msg->ptime)
-		rc |= msgb_printf(msg, " p:%u,", mgcp_msg->ptime);
+		rc += msgb_printf(msg, " p:%u,", mgcp_msg->ptime);

 	if (mgcp_msg->codecs_len) {
-		rc |= msgb_printf(msg, " a:");
+		rc += msgb_printf(msg, " a:");
 		for (i = 0; i < mgcp_msg->codecs_len; i++) {
 			pt = mgcp_msg->codecs[i];
 			codec = get_value_string_or_null(osmo_mgcpc_codec_names, pt);

 			/* Note: Use codec descriptors from enum mgcp_codecs
 			 * in mgcp_client only! */
-			if (!codec) {
-				msgb_free(msg);
-				return -EINVAL;
-			}
-
-			rc |= msgb_printf(msg, "%s", extract_codec_name(codec));
+			OSMO_ASSERT(codec);
+			rc += msgb_printf(msg, "%s", extract_codec_name(codec));
 			if (i < mgcp_msg->codecs_len - 1)
-				rc |= msgb_printf(msg, ";");
+				rc += msgb_printf(msg, ";");
 		}
-		rc |= msgb_printf(msg, ",");
+		rc += msgb_printf(msg, ",");
 	}

-	rc |= msgb_printf(msg, " nt:IN\r\n");
+	rc += msgb_printf(msg, " nt:IN\r\n");

-	if (rc != 0) {
-		LOGP(DLMGCP, LOGL_ERROR,
-		     "message buffer to small, can not generate MGCP message (LCO)\n");
-		msgb_free(msg);
-		return -ENOBUFS;
-	}
-	return 0;
+	return rc;
 }

 /* Helper function for mgcp_msg_gen(): Add SDP information to MGCP message */
@@ -1234,64 +1140,64 @@ static int add_sdp(struct msgb *msg, struct mgcp_msg *mgcp_msg, struct mgcp_clie
 	unsigned int pt;

 	/* Add separator to mark the beginning of the SDP block */
-	rc |= msgb_printf(msg, "\r\n");
+	rc += msgb_printf(msg, "\r\n");

 	/* Add SDP protocol version */
-	rc |= msgb_printf(msg, "v=0\r\n");
+	rc += msgb_printf(msg, "v=0\r\n");

 	/* Determine local IP-Address */
 	if (osmo_sock_local_ip(local_ip, mgcp->actual.remote_addr) < 0) {
-		LOGPMGW(mgcp, LOGL_ERROR,
-			"Could not determine local IP-Address!\n");
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "Could not determine local IP-Address!\n");
 		msgb_free(msg);
-		return -EINVAL;
+		return -2;
 	}
 	local_ip_family = osmo_ip_str_type(local_ip);
 	if (local_ip_family == AF_UNSPEC) {
 		msgb_free(msg);
-		return -EINVAL;
+		return -2;
 	}
 	audio_ip_family = osmo_ip_str_type(mgcp_msg->audio_ip);
 	if (audio_ip_family == AF_UNSPEC) {
 		msgb_free(msg);
-		return -EINVAL;
+		return -2;
 	}

 	/* Add owner/creator (SDP) */
-	rc |= msgb_printf(msg, "o=- %x 23 IN IP%c %s\r\n", mgcp_msg->call_id,
+	rc += msgb_printf(msg, "o=- %x 23 IN IP%c %s\r\n", mgcp_msg->call_id,
 			  local_ip_family == AF_INET6 ? '6' : '4',
 			  local_ip);

 	/* Add session name (none) */
-	rc |= msgb_printf(msg, "s=-\r\n");
+	rc += msgb_printf(msg, "s=-\r\n");

 	/* Add RTP address and port */
 	if (mgcp_msg->audio_port == 0) {
-		LOGPMGW(mgcp, LOGL_ERROR,
-			"Invalid port number, can not generate MGCP message\n");
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "Invalid port number, can not generate MGCP message\n");
 		msgb_free(msg);
-		return -EINVAL;
+		return -2;
 	}
 	if (strlen(mgcp_msg->audio_ip) <= 0) {
-		LOGPMGW(mgcp, LOGL_ERROR,
-			"Empty ip address, can not generate MGCP message\n");
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "Empty ip address, can not generate MGCP message\n");
 		msgb_free(msg);
-		return -EINVAL;
+		return -2;
 	}
-	rc |= msgb_printf(msg, "c=IN IP%c %s\r\n",
+	rc += msgb_printf(msg, "c=IN IP%c %s\r\n",
 			  audio_ip_family == AF_INET6 ? '6' : '4',
 			  mgcp_msg->audio_ip);

 	/* Add time description, active time (SDP) */
-	rc |= msgb_printf(msg, "t=0 0\r\n");
+	rc += msgb_printf(msg, "t=0 0\r\n");

-	rc |= msgb_printf(msg, "m=audio %u RTP/AVP", mgcp_msg->audio_port);
+	rc += msgb_printf(msg, "m=audio %u RTP/AVP", mgcp_msg->audio_port);
 	for (i = 0; i < mgcp_msg->codecs_len; i++) {
 		pt = map_codec_to_pt(mgcp_msg->ptmap, mgcp_msg->ptmap_len, mgcp_msg->codecs[i]);
-		rc |= msgb_printf(msg, " %u", pt);
+		rc += msgb_printf(msg, " %u", pt);

 	}
-	rc |= msgb_printf(msg, "\r\n");
+	rc += msgb_printf(msg, "\r\n");

 	/* Add optional codec parameters (fmtp) */
 	if (mgcp_msg->param_present) {
@@ -1301,9 +1207,9 @@ static int add_sdp(struct msgb *msg, struct mgcp_msg *mgcp_msg, struct mgcp_clie
 				   continue;
 			pt = map_codec_to_pt(mgcp_msg->ptmap, mgcp_msg->ptmap_len, mgcp_msg->codecs[i]);
 			if (mgcp_msg->param.amr_octet_aligned_present && mgcp_msg->param.amr_octet_aligned)
-				rc |= msgb_printf(msg, "a=fmtp:%u octet-align=1\r\n", pt);
+				rc += msgb_printf(msg, "a=fmtp:%u octet-align=1\r\n", pt);
 			else if (mgcp_msg->param.amr_octet_aligned_present && !mgcp_msg->param.amr_octet_aligned)
-				rc |= msgb_printf(msg, "a=fmtp:%u octet-align=0\r\n", pt);
+				rc += msgb_printf(msg, "a=fmtp:%u octet-align=0\r\n", pt);
 		}
 	}

@@ -1318,25 +1224,16 @@ static int add_sdp(struct msgb *msg, struct mgcp_msg *mgcp_msg, struct mgcp_clie

 			/* Note: Use codec descriptors from enum mgcp_codecs
 			 * in mgcp_client only! */
-			if (!codec) {
-				msgb_free(msg);
-				return -EINVAL;
-			}
+			OSMO_ASSERT(codec);

-			rc |= msgb_printf(msg, "a=rtpmap:%u %s\r\n", pt, codec);
+			rc += msgb_printf(msg, "a=rtpmap:%u %s\r\n", pt, codec);
 		}
 	}

 	if (mgcp_msg->ptime)
-		rc |= msgb_printf(msg, "a=ptime:%u\r\n", mgcp_msg->ptime);
+		rc += msgb_printf(msg, "a=ptime:%u\r\n", mgcp_msg->ptime);

-	if (rc != 0) {
-		LOGPMGW(mgcp, LOGL_ERROR, "Message buffer to small, can not generate MGCP message (SDP)\n");
-		msgb_free(msg);
-		return -ENOBUFS;
-	}
-
-	return 0;
+	return rc;
 }

 /*! Generate an MGCP message
@@ -1349,6 +1246,7 @@ struct msgb *mgcp_msg_gen(struct mgcp_client *mgcp, struct mgcp_msg *mgcp_msg)
 	uint32_t mandatory_mask;
 	struct msgb *msg = msgb_alloc_headroom(4096, 128, "MGCP tx");
 	int rc = 0;
+	int rc_sdp;
 	bool use_sdp = false;
 	char buf[32];

@@ -1359,34 +1257,35 @@ struct msgb *mgcp_msg_gen(struct mgcp_client *mgcp, struct mgcp_msg *mgcp_msg)
 	switch (mgcp_msg->verb) {
 	case MGCP_VERB_CRCX:
 		mandatory_mask = MGCP_CRCX_MANDATORY;
-		rc |= msgb_printf(msg, "CRCX %u", trans_id);
+		rc += msgb_printf(msg, "CRCX %u", trans_id);
 		break;
 	case MGCP_VERB_MDCX:
 		mandatory_mask = MGCP_MDCX_MANDATORY;
-		rc |= msgb_printf(msg, "MDCX %u", trans_id);
+		rc += msgb_printf(msg, "MDCX %u", trans_id);
 		break;
 	case MGCP_VERB_DLCX:
 		mandatory_mask = MGCP_DLCX_MANDATORY;
-		rc |= msgb_printf(msg, "DLCX %u", trans_id);
+		rc += msgb_printf(msg, "DLCX %u", trans_id);
 		break;
 	case MGCP_VERB_AUEP:
 		mandatory_mask = MGCP_AUEP_MANDATORY;
-		rc |= msgb_printf(msg, "AUEP %u", trans_id);
+		rc += msgb_printf(msg, "AUEP %u", trans_id);
 		break;
 	case MGCP_VERB_RSIP:
 		mandatory_mask = MGCP_RSIP_MANDATORY;
-		rc |= msgb_printf(msg, "RSIP %u", trans_id);
+		rc += msgb_printf(msg, "RSIP %u", trans_id);
 		break;
 	default:
-		LOGPMGW(mgcp, LOGL_ERROR, "Invalid command verb, can not generate MGCP message\n");
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "Invalid command verb, can not generate MGCP message\n");
 		msgb_free(msg);
 		return NULL;
 	}

 	/* Check if mandatory fields are missing */
 	if (!((mgcp_msg->presence & mandatory_mask) == mandatory_mask)) {
-		LOGPMGW(mgcp, LOGL_ERROR,
-			"One or more missing mandatory fields, can not generate MGCP message\n");
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "One or more missing mandatory fields, can not generate MGCP message\n");
 		msgb_free(msg);
 		return NULL;
 	}
@@ -1394,37 +1293,39 @@ struct msgb *mgcp_msg_gen(struct mgcp_client *mgcp, struct mgcp_msg *mgcp_msg)
 	/* Add endpoint name */
 	if (mgcp_msg->presence & MGCP_MSG_PRESENCE_ENDPOINT) {
 		if (strlen(mgcp_msg->endpoint) <= 0) {
-			LOGPMGW(mgcp, LOGL_ERROR, "Empty endpoint name, can not generate MGCP message\n");
+			LOGP(DLMGCP, LOGL_ERROR,
+			     "Empty endpoint name, can not generate MGCP message\n");
 			msgb_free(msg);
 			return NULL;
 		}

 		if (strstr(mgcp_msg->endpoint, "@") == NULL) {
-			LOGPMGW(mgcp, LOGL_ERROR,
-				"Endpoint name (%s) lacks separator (@), can not generate MGCP message\n",
-				mgcp_msg->endpoint);
+			LOGP(DLMGCP, LOGL_ERROR,
+			     "Endpoint name (%s) lacks separator (@), can not generate MGCP message\n",
+			     mgcp_msg->endpoint);
 			msgb_free(msg);
 			return NULL;
 		}

-		rc |= msgb_printf(msg, " %s", mgcp_msg->endpoint);
+		rc += msgb_printf(msg, " %s", mgcp_msg->endpoint);
 	}

 	/* Add protocol version */
-	rc |= msgb_printf(msg, " MGCP 1.0\r\n");
+	rc += msgb_printf(msg, " MGCP 1.0\r\n");

 	/* Add call id */
 	if (mgcp_msg->presence & MGCP_MSG_PRESENCE_CALL_ID)
-		rc |= msgb_printf(msg, "C: %x\r\n", mgcp_msg->call_id);
+		rc += msgb_printf(msg, "C: %x\r\n", mgcp_msg->call_id);

 	/* Add connection id */
 	if (mgcp_msg->presence & MGCP_MSG_PRESENCE_CONN_ID) {
 		if (strlen(mgcp_msg->conn_id) <= 0) {
-			LOGPMGW(mgcp, LOGL_ERROR, "Empty connection id, can not generate MGCP message\n");
+			LOGP(DLMGCP, LOGL_ERROR,
+			     "Empty connection id, can not generate MGCP message\n");
 			msgb_free(msg);
 			return NULL;
 		}
-		rc |= msgb_printf(msg, "I: %s\r\n", mgcp_msg->conn_id);
+		rc += msgb_printf(msg, "I: %s\r\n", mgcp_msg->conn_id);
 	}

 	/* Using SDP makes sense when a valid IP/Port combination is specifiec,
@@ -1436,34 +1337,33 @@ struct msgb *mgcp_msg_gen(struct mgcp_client *mgcp, struct mgcp_msg *mgcp_msg)
 	/* Add local connection options (LCO) */
 	if (!use_sdp
 	    && (mgcp_msg->verb == MGCP_VERB_CRCX
-		|| mgcp_msg->verb == MGCP_VERB_MDCX)) {
-	        if (add_lco(msg, mgcp_msg) < 0)
-			return NULL;
-	}
+		|| mgcp_msg->verb == MGCP_VERB_MDCX))
+		rc += add_lco(msg, mgcp_msg);

 	/* Add mode */
 	if (mgcp_msg->presence & MGCP_MSG_PRESENCE_CONN_MODE)
-		rc |=
+		rc +=
 		    msgb_printf(msg, "M: %s\r\n",
 				mgcp_client_cmode_name(mgcp_msg->conn_mode));

 	/* Add X-Osmo-IGN */
 	if ((mgcp_msg->presence & MGCP_MSG_PRESENCE_X_OSMO_IGN)
 	    && (mgcp_msg->x_osmo_ign != 0))
-		rc |=
+		rc +=
 		    msgb_printf(msg, MGCP_X_OSMO_IGN_HEADER "%s\r\n",
 				mgcp_msg->x_osmo_ign & MGCP_X_OSMO_IGN_CALLID ? " C": "");

 	/* Add X-Osmo-Osmux */
 	if ((mgcp_msg->presence & MGCP_MSG_PRESENCE_X_OSMO_OSMUX_CID)) {
 		if (mgcp_msg->x_osmo_osmux_cid < -1 || mgcp_msg->x_osmo_osmux_cid > OSMUX_CID_MAX) {
-			LOGPMGW(mgcp, LOGL_ERROR, "Wrong Osmux CID %d, can not generate MGCP message\n",
-				mgcp_msg->x_osmo_osmux_cid);
+			LOGP(DLMGCP, LOGL_ERROR,
+			     "Wrong Osmux CID %d, can not generate MGCP message\n",
+			     mgcp_msg->x_osmo_osmux_cid);
 			msgb_free(msg);
 			return NULL;
 		}
 		snprintf(buf, sizeof(buf), " %d", mgcp_msg->x_osmo_osmux_cid);
-		rc |=
+		rc +=
 		    msgb_printf(msg, MGCP_X_OSMO_OSMUX_HEADER "%s\r\n",
 				mgcp_msg->x_osmo_osmux_cid == -1 ? " *": buf);
 	}
@@ -1473,12 +1373,16 @@ struct msgb *mgcp_msg_gen(struct mgcp_client *mgcp, struct mgcp_msg *mgcp_msg)
 	if (use_sdp
 	    && (mgcp_msg->verb == MGCP_VERB_CRCX
 		|| mgcp_msg->verb == MGCP_VERB_MDCX)) {
-	        if (add_sdp(msg, mgcp_msg, mgcp) < 0)
+		rc_sdp = add_sdp(msg, mgcp_msg, mgcp);
+		if (rc_sdp == -2)
 			return NULL;
+		else
+			rc += rc_sdp;
 	}

 	if (rc != 0) {
-		LOGPMGW(mgcp, LOGL_ERROR, "Message buffer to small, can not generate MGCP message\n");
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "message buffer to small, can not generate MGCP message\n");
 		msgb_free(msg);
 		msg = NULL;
 	}
@@ -1494,7 +1398,7 @@ mgcp_trans_id_t mgcp_msg_trans_id(struct msgb *msg)
 	return (mgcp_trans_id_t)msg->cb[MSGB_CB_MGCP_TRANS_ID];
 }

-/*! Get the configuration parameters for a given MGCP client instance
+/*! Get the configuration parameters a given MGCP client instance
 *  \param[in] mgcp MGCP client descriptor.
 *  \returns configuration */
 struct mgcp_client_conf *mgcp_client_conf_actual(struct mgcp_client *mgcp)
@@ -1510,22 +1414,3 @@ const struct value_string mgcp_client_connection_mode_strs[] = {
 	{ MGCP_CONN_LOOPBACK, "loopback" },
 	{ 0, NULL }
 };
-
-/*! Get MGCP client instance name (VTY).
- *  \param[in] mgcp MGCP client descriptor.
- *  \returns MGCP client name.
- *
- *  The user can only modify the name of an MGCP client instance when it is
- *  part of a pool. For single MGCP client instances and MGCP client instance
- *  where no description is set via the VTY, the MGW domain name will be used
- *  as name. */
-const char *mgcp_client_name(const struct mgcp_client *mgcp)
-{
-	if (!mgcp)
-		return "(null)";
-
-	if (mgcp->actual.description)
-		return mgcp->actual.description;
-	else
-		return mgcp_client_endpoint_domain(mgcp);
-}
--- a/src/libosmo-mgcp-client/mgcp_client_endpoint_fsm.c
+++ b/src/libosmo-mgcp-client/mgcp_client_endpoint_fsm.c
@@ -33,7 +33,7 @@

 #define LOG_CI(ci, level, fmt, args...) do { \
 	if (!ci || !ci->ep) \
-		LOGP(DLMGCP, level, "(unknown MGW endpoint) " fmt, ## args); \
+		LOGP(DLGLOBAL, level, "(unknown MGW endpoint) " fmt, ## args); \
 	else \
 		LOG_MGCPC_EP(ci->ep, level, "CI[%d] %s%s%s: " fmt, \
 			(int)(ci - ci->ep->ci), \
@@ -216,13 +216,6 @@ const char *osmo_mgcpc_ep_ci_id(const struct osmo_mgcpc_ep_ci *ci)
 	return ci->mgcp_ci_str;
 }

-struct mgcp_client *osmo_mgcpc_ep_client(const struct osmo_mgcpc_ep *ep)
-{
-	if (!ep)
-		return NULL;
-	return ep->mgcp_client;
-}
-
 static struct value_string osmo_mgcpc_ep_fsm_event_names[33] = {};

 static char osmo_mgcpc_ep_fsm_event_name_bufs[32][32] = {};
@@ -515,8 +508,7 @@ static void on_success(struct osmo_mgcpc_ep_ci *ci, void *data)
 	osmo_mgcpc_ep_fsm_check_state_chg_after_response(ci->ep->fi);
 }

-/*! Return the MGW's local RTP port information for this connection, i.e. the local port that MGW is receiving on, as
- * returned by the last CRCX-OK / MDCX-OK message. */
+/*! Return the MGW's RTP port information for this connection, as returned by the last CRCX/MDCX OK message. */
 const struct mgcp_conn_peer *osmo_mgcpc_ep_ci_get_rtp_info(const struct osmo_mgcpc_ep_ci *ci)
 {
 	ci = osmo_mgcpc_ep_check_ci((struct osmo_mgcpc_ep_ci*)ci);
@@ -527,16 +519,6 @@ const struct mgcp_conn_peer *osmo_mgcpc_ep_ci_get_rtp_info(const struct osmo_mgc
 	return &ci->rtp_info;
 }

-/*! Return the MGW's remote RTP port information for this connection, i.e. the remote RTP port that the MGW is sending
- * to, as sent to the MGW by the last CRCX / MDCX message. */
-const struct mgcp_conn_peer *osmo_mgcpc_ep_ci_get_remote_rtp_info(const struct osmo_mgcpc_ep_ci *ci)
-{
-	ci = osmo_mgcpc_ep_check_ci((struct osmo_mgcpc_ep_ci*)ci);
-	if (!ci)
-		return NULL;
-	return &ci->verb_info;
-}
-
 /*! Return the MGW's RTP port information for this connection, as returned by the last CRCX/MDCX OK message. */
 bool osmo_mgcpc_ep_ci_get_crcx_info_to_sockaddr(const struct osmo_mgcpc_ep_ci *ci, struct sockaddr_storage *dest)
 {
@@ -623,7 +605,7 @@ void osmo_mgcpc_ep_ci_request(struct osmo_mgcpc_ep_ci *ci,
 	ci = osmo_mgcpc_ep_check_ci(ci);

 	if (!ci) {
-		LOGP(DLMGCP, LOGL_ERROR, "Invalid MGW endpoint request: no ci\n");
+		LOGP(DLGLOBAL, LOGL_ERROR, "Invalid MGW endpoint request: no ci\n");
 		goto dispatch_error;
 	}
 	if (!verb_info && verb != MGCP_VERB_DLCX) {
@@ -997,34 +979,6 @@ static int osmo_mgcpc_ep_fsm_timer_cb(struct osmo_fsm_inst *fi)
 	return 0;
 }

-void osmo_mgcpc_ep_fsm_pre_term(struct osmo_fsm_inst *fi, enum osmo_fsm_term_cause cause)
-{
-	int i;
-	struct osmo_mgcpc_ep *ep = osmo_mgcpc_ep_fi_mgwep(fi);
-
-	/* We want the mgcp_client_fsm to still stick around until it received the DLCX "OK" responses from the MGW. So
-	 * it should not dealloc along with this ep_fsm instance. Instead, signal DLCX for each conn on the endpoint,
-	 * and detach the mgcp_client_fsm from being a child-fsm.
-	 *
-	 * After mgcp_conn_delete(), an mgcp_client_fsm instance goes into ST_DLCX_RESP, which waits up to 4 seconds for
-	 * a DLCX OK. If none is received in that time, the instance terminates. So cleanup of the instance is
-	 * guaranteed. */
-
-	for (i = 0; i < ARRAY_SIZE(ep->ci); i++) {
-		struct osmo_mgcpc_ep_ci *ci = &ep->ci[i];
-
-		if (!ci->occupied || !ci->mgcp_client_fi)
-			continue;
-
-		/* mgcp_conn_delete() unlinks itself from this parent FSM implicitly and waits for the DLCX OK. */
-		mgcp_conn_delete(ci->mgcp_client_fi);
-		/* Forget all about this ci */
-		*ci = (struct osmo_mgcpc_ep_ci){
-			.ep = ep,
-		};
-	}
-}
-
 static struct osmo_fsm osmo_mgcpc_ep_fsm = {
 	.name = "mgw-endp",
 	.states = osmo_mgcpc_ep_fsm_states,
@@ -1032,5 +986,5 @@ static struct osmo_fsm osmo_mgcpc_ep_fsm = {
 	.log_subsys = DLMGCP,
 	.event_names = osmo_mgcpc_ep_fsm_event_names,
 	.timer_cb = osmo_mgcpc_ep_fsm_timer_cb,
-	.pre_term = osmo_mgcpc_ep_fsm_pre_term,
+	/* The FSM termination will automatically trigger any mgcp_client_fsm instances to DLCX. */
 };
--- a/src/libosmo-mgcp-client/mgcp_client_fsm.c
+++ b/src/libosmo-mgcp-client/mgcp_client_fsm.c
@@ -252,18 +252,6 @@ const char *mgcp_conn_get_ci(struct osmo_fsm_inst *fi)
 	return mgcp_ctx->conn_id;
 }

-/* Get the mgcp_client that is used with this mgcp_client_fsm instance */
-struct mgcp_client *mgcp_conn_get_client(struct osmo_fsm_inst *fi)
-{
-	struct mgcp_ctx *mgcp_ctx;
-
-	if (!fi)
-		return NULL;
-
-	mgcp_ctx = fi->priv;
-	return mgcp_ctx->mgcp;
-}
-
 static void mgw_crcx_resp_cb(struct mgcp_response *r, void *priv)
 {
 	struct osmo_fsm_inst *fi = priv;
@@ -533,12 +521,10 @@ static void fsm_cleanup_cb(struct osmo_fsm_inst *fi, enum osmo_fsm_term_cause ca
 	/* Should the FSM be terminated while there are still open connections
 	 * on the MGW, we send an unconditional DLCX to terminate the
 	 * connection. This is not the normal case. The user should always use
-	 * mgcp_conn_delete() to instruct the FSM to perform a graceful exit.
-	 * If in ST_DLCX_RESP, a DLCX was already sent and we did not get a
-	 * response. No point in sending another one. */
-	if (fi->state != ST_DLCX_RESP && strlen(mgcp_ctx->conn_id)) {
-		LOGPFSML(fi, LOGL_INFO, "Conn cleanup, sending DLCX for %s %s\n", mgcp_ctx->conn_peer_remote.endpoint,
-			 mgcp_ctx->conn_id);
+	 * mgcp_conn_delete() to instruct the FSM to perform a graceful exit */
+	if (strlen(mgcp_ctx->conn_id)) {
+		LOGPFSML(fi, LOGL_NOTICE,
+			 "MGW/DLCX: FSM termination with connections still present, sending unconditional DLCX...\n");
 		msg = make_dlcx_msg(mgcp_ctx);
 		if (!msg)
 			LOGPFSML(fi, LOGL_ERROR, "MGW/DLCX: Error composing DLCX message\n");
@@ -608,7 +594,6 @@ static struct osmo_fsm fsm_mgcp_client = {
 	.timer_cb = fsm_timeout_cb,
 	.cleanup = fsm_cleanup_cb,
 	.event_names = fsm_mgcp_client_evt_names,
-	.log_subsys = DLMGCP,
 };

 /*! allocate FSM, and create a new connection on the MGW.
@@ -722,8 +707,8 @@ void mgcp_conn_delete(struct osmo_fsm_inst *fi)
 	if (fi->proc.terminating)
 		return;

-	/* Unlink FSM from parent, set the struct mgcp_client as new talloc ctx. */
-	osmo_fsm_inst_unlink_parent(fi, mgcp_ctx->mgcp);
+	/* Unlink FSM from parent */
+	osmo_fsm_inst_unlink_parent(fi, NULL);

 	/* An error situation where the parent FSM must be killed immediately
 	 * may lead into a situation where the DLCX can not be executed right
--- a/src/libosmo-mgcp-client/mgcp_client_pool.c
+++ b/src/libosmo-mgcp-client/mgcp_client_pool.c
@@ -1,216 +0,0 @@
-/* (C) 2021 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
- * All Rights Reserved
- *
- * Author: Philipp Maier
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-#include <osmocom/mgcp_client/mgcp_client.h>
-#include <osmocom/mgcp_client/mgcp_client_internal.h>
-#include <osmocom/mgcp_client/mgcp_client_pool_internal.h>
-#include <osmocom/mgcp_client/mgcp_client_pool.h>
-#include <stddef.h>
-
-#define LOGPPMGW(pool_member, level, fmt, args...) \
-LOGP(DLMGCP, level, "MGW-pool(%s) " fmt, mgcp_client_pool_member_name(pool_member), ## args)
-
-/* Get a human readable name for a given pool member. */
-const char *mgcp_client_pool_member_name(const struct mgcp_client_pool_member *pool_member)
-{
-	const struct mgcp_client *mpcp_client;
-	struct mgcp_client mpcp_client_dummy;
-	static char name[512];
-	const char *description;
-
-	if (!pool_member)
-		return "(null)";
-
-	/* It is not guranteed that a pool_member has an MGCP client. The client may not yet be initialized or the
-	 * initalization may have been failed. In this case we will generate a dummy MGCP client to work with. */
-	if (!pool_member->client) {
-		memcpy(&mpcp_client_dummy.actual, &pool_member->conf, sizeof(mpcp_client_dummy.actual));
-		mpcp_client = &mpcp_client_dummy;
-	} else {
-		mpcp_client = pool_member->client;
-	}
-
-	description = mgcp_client_name(mpcp_client);
-	snprintf(name, sizeof(name), "%d:%s", pool_member->nr, description);
-
-	return name;
-}
-
-/*! Allocate MGCP client pool. This is called once on startup and before the pool is used with
- *  mgcp_client_pool_vty_init(). Since the pool is linked with the VTY it must exist througout the entire runtime.
- *  \param[in] talloc_ctx talloc context. */
-struct mgcp_client_pool *mgcp_client_pool_alloc(void *talloc_ctx)
-{
-	struct mgcp_client_pool *pool;
-
-	pool = talloc_zero(talloc_ctx, struct mgcp_client_pool);
-	if (!pool)
-		return NULL;
-
-	INIT_LLIST_HEAD(&pool->pool);
-
-	return pool;
-}
-
-/*! Initialize and connect an mcgp client pool.
- *  \param[in,out] mgcp MGCP client pool descriptor.
- *  \returns number of successfully initialized pool members. */
-unsigned int mgcp_client_pool_connect(struct mgcp_client_pool *pool)
-{
-	struct mgcp_client_pool_member *pool_member;
-	unsigned int pool_members_initialized = 0;
-
-	llist_for_each_entry(pool_member, &pool->pool, list) {
-
-		/* Initialize client */
-		pool_member->client = mgcp_client_init(pool_member, &pool_member->conf);
-		if (!pool_member->client) {
-			LOGPPMGW(pool_member, LOGL_ERROR, "MGCP client initialization failed\n");
-			continue;
-		}
-
-		/* Set backpointer so that we can detect later that this MGCP client is managed
-		 * by this pool. */
-		pool_member->client->pool = pool;
-
-		/* Connect client */
-		if (mgcp_client_connect2(pool_member->client, 0)) {
-			LOGPPMGW(pool_member, LOGL_ERROR, "MGCP client connect failed at (%s:%u)\n",
-				 pool_member->conf.remote_addr, pool_member->conf.remote_port);
-			talloc_free(pool_member->client);
-			pool_member->client = NULL;
-			continue;
-		}
-
-		pool_members_initialized++;
-	}
-
-	return pool_members_initialized;
-}
-
-/*! register a single mgcp_client instance to the pool.
- *  \param[out] pool MGCP client pool descriptor.
- *  \param[in] mgcp MGCP client descriptor. */
-void mgcp_client_pool_register_single(struct mgcp_client_pool *pool, struct mgcp_client *mgcp_client)
-{
-	/*! Some applications still support the non-pooled MGW VTY configuration variant provided by
-	 *  mgcp_client_vty_init(). If this is the case the mgcp_client instance created by mgcp_client_init()
-	 *  can be registered here so that it will appear as if it were part of the pool. When the user actively
-	 *  configures MGW pool members, the MGCP client registered here will be ignored. (The registration of
-	 *  multiple singe mgcp_client instances is not possible.) */
-	pool->mgcp_client_single = mgcp_client;
-}
-
-/* Not every pool member may have a functional MGCP client, we will run through the pool once until we meet a
- * pool member that is suitable (has a client, is not blocked, has a low load). */
-static struct mgcp_client_pool_member *mgcp_client_pool_pick(struct mgcp_client_pool *pool)
-{
-	struct mgcp_client_pool_member *pool_member;
-	struct mgcp_client_pool_member *pool_member_picked = NULL;
-	unsigned int n_pool_members = llist_count(&pool->pool);
-
-	llist_for_each_entry(pool_member, &pool->pool, list) {
-		if (pool_member->blocked == false && pool_member->client) {
-			if (!pool_member_picked)
-				pool_member_picked = pool_member;
-			else if (pool_member_picked->refcount > pool_member->refcount)
-				pool_member_picked = pool_member;
-		} else {
-			LOGPPMGW(pool_member, LOGL_DEBUG, "MGW pool has %u members -- MGW %u is unusable\n", n_pool_members,
-				 pool_member->nr);
-		}
-	}
-
-	if (pool_member_picked) {
-		LOGPPMGW(pool_member_picked, LOGL_DEBUG, "MGW pool has %u members -- using MGW %u (active calls: %u)\n",
-			 n_pool_members, pool_member_picked->nr, pool_member_picked->refcount);
-		return pool_member_picked;
-	}
-
-	LOGP(DLMGCP, LOGL_ERROR,
-	     "MGW pool has %u members, but no functional MGW pool member found -- check configuration!\n",
-	     n_pool_members);
-
-	return NULL;
-}
-
-/*! get an MGCP client from the pool (increment reference counter).
- *  \param[in,out] pool MGCP client pool descriptor.
- *  \returns MGCP client descriptor, NULL if no member was found (empty pool). */
-struct mgcp_client *mgcp_client_pool_get(struct mgcp_client_pool *pool)
-{
-	struct mgcp_client_pool_member *pool_member;
-
-	/*! When an MGCP client is taken from the pool it is still available for other calls. In fact only a reference
-	 *  counter is incremented to keep track on how many references to a specific MGCP client are currently used
-	 *  by the application code. */
-
-	/* When the pool is empty, return a single MGCP client if it is registered. */
-	if (llist_empty(&pool->pool) && pool->mgcp_client_single) {
-		LOGP(DLMGCP, LOGL_DEBUG, "MGW pool is empty -- using (single) MGW %s\n",
-		     mgcp_client_name(pool->mgcp_client_single));
-		return pool->mgcp_client_single;
-	}
-
-	/* Abort when the pool is empty */
-	if (llist_empty(&pool->pool)) {
-		LOGP(DLMGCP, LOGL_ERROR, "MGW pool is empty -- no MGW available!\n");
-		return NULL;
-	}
-
-	/* Pick a suitable pool member */
-	pool_member = mgcp_client_pool_pick(pool);
-	if (pool_member) {
-		pool_member->refcount++;
-		return pool_member->client;
-	}
-
-	return NULL;
-}
-
-/*! put an MGCP client back into the pool (decrement reference counter).
- *  \param[in,out] pool MGCP client pool descriptor.
- *  \param[in] mgcp MGCP client descriptor.
- *
- * This function is able to detect automatically to which pool the mgcp_client belongs. If the mgcp_client does
- * not belong to a pool at all, the function call will have no effect. */
-void mgcp_client_pool_put(struct mgcp_client *mgcp_client)
-{
-	struct mgcp_client_pool_member *pool_member;
-	struct mgcp_client_pool *pool;
-
-	if (!mgcp_client)
-		return;
-
-	if (mgcp_client->pool)
-		pool = mgcp_client->pool;
-	else
-		return;
-
-	llist_for_each_entry(pool_member, &pool->pool, list) {
-		if (pool_member->client == mgcp_client) {
-			if (pool_member->refcount == 0) {
-				LOGPPMGW(pool_member, LOGL_ERROR, "MGW pool member has invalid refcount\n");
-				return;
-			}
-			pool_member->refcount--;
-		}
-	}
-}
--- a/src/libosmo-mgcp-client/mgcp_client_vty.c
+++ b/src/libosmo-mgcp-client/mgcp_client_vty.c
@@ -24,36 +24,16 @@
 #include <stdlib.h>
 #include <talloc.h>

-#include <osmocom/vty/vty.h>
 #include <osmocom/vty/command.h>
 #include <osmocom/vty/misc.h>
 #include <osmocom/core/utils.h>

 #include <osmocom/mgcp_client/mgcp_client.h>
-#include <osmocom/mgcp_client/mgcp_client_internal.h>
-#include <osmocom/mgcp_client/mgcp_client_pool_internal.h>

 #define MGW_STR MGCP_CLIENT_MGW_STR

-/* Only common (non-pooled) VTY connands will use this talloc context. All
- * pooled VTY commands will use the pool (global_mgcp_client_pool) as
- * talloc context. */
-static void *global_mgcp_client_ctx = NULL;
-
-/* MGCP Client configuration used with mgcp_client_vty_init(). (This pointer
- * points to user provided memory, so it cannot be used as talloc context.) */
-static struct mgcp_client_conf *global_mgcp_client_conf = NULL;
-
-/* Pointer to the MGCP pool that is managed by mgcp_client_pool_vty_init() */
-static struct mgcp_client_pool *global_mgcp_client_pool = NULL;
-
-struct mgcp_client_conf *get_mgcp_client_config(struct vty *vty)
-{
-	if (global_mgcp_client_pool && vty->node == global_mgcp_client_pool->vty_node->node)
-		return vty->index;
-	else
-		return global_mgcp_client_conf;
-}
+void *global_mgcp_client_ctx = NULL;
+struct mgcp_client_conf *global_mgcp_client_conf = NULL;

 DEFUN(cfg_mgw_local_ip, cfg_mgw_local_ip_cmd,
      "mgw local-ip " VTY_IPV46_CMD,
@@ -61,10 +41,11 @@ DEFUN(cfg_mgw_local_ip, cfg_mgw_local_ip_cmd,
      "local bind IPv4 address\n"
      "local bind IPv6 address\n")
 {
-	struct mgcp_client_conf *conf = get_mgcp_client_config(vty);
-
+	if (!global_mgcp_client_conf)
+		return CMD_ERR_NOTHING_TODO;
+	OSMO_ASSERT(global_mgcp_client_ctx);
 	osmo_talloc_replace_string(global_mgcp_client_ctx,
-				   (char **)&conf->local_addr,
+				   (char**)&global_mgcp_client_conf->local_addr,
 				   argv[0]);
 	return CMD_SUCCESS;
 }
@@ -78,9 +59,9 @@ DEFUN(cfg_mgw_local_port, cfg_mgw_local_port_cmd,
      MGW_STR "local port to connect to MGW from\n"
      "local bind port\n")
 {
-	struct mgcp_client_conf *conf = get_mgcp_client_config(vty);
-
-	conf->local_port = atoi(argv[0]);
+	if (!global_mgcp_client_conf)
+		return CMD_ERR_NOTHING_TODO;
+	global_mgcp_client_conf->local_port = atoi(argv[0]);
 	return CMD_SUCCESS;
 }
 ALIAS_DEPRECATED(cfg_mgw_local_port, cfg_mgcpgw_local_port_cmd,
@@ -94,10 +75,12 @@ DEFUN(cfg_mgw_remote_ip, cfg_mgw_remote_ip_cmd,
      "remote IPv4 address\n"
      "remote IPv6 address\n")
 {
-	struct mgcp_client_conf *conf = get_mgcp_client_config(vty);
-
+	if (!global_mgcp_client_conf)
+		return CMD_ERR_NOTHING_TODO;
+	OSMO_ASSERT(global_mgcp_client_ctx);
 	osmo_talloc_replace_string(global_mgcp_client_ctx,
-				   (char **)&conf->remote_addr, argv[0]);
+				   (char**)&global_mgcp_client_conf->remote_addr,
+				   argv[0]);
 	return CMD_SUCCESS;
 }
 ALIAS_DEPRECATED(cfg_mgw_remote_ip, cfg_mgcpgw_remote_ip_cmd,
@@ -110,9 +93,9 @@ DEFUN(cfg_mgw_remote_port, cfg_mgw_remote_port_cmd,
      MGW_STR "remote port to reach the MGW at\n"
      "remote port\n")
 {
-	struct mgcp_client_conf *conf = get_mgcp_client_config(vty);
-
-	conf->remote_port = atoi(argv[0]);
+	if (!global_mgcp_client_conf)
+		return CMD_ERR_NOTHING_TODO;
+	global_mgcp_client_conf->remote_port = atoi(argv[0]);
 	return CMD_SUCCESS;
 }
 ALIAS_DEPRECATED(cfg_mgw_remote_port, cfg_mgcpgw_remote_port_cmd,
@@ -162,129 +145,50 @@ DEFUN(cfg_mgw_endpoint_domain_name,
      MGW_STR "Set the domain name to send in MGCP messages, e.g. the part 'foo' in 'rtpbridge/*@foo'.\n"
      "Domain name, should be alphanumeric.\n")
 {
-	struct mgcp_client_conf *conf = get_mgcp_client_config(vty);
-
-	if (osmo_strlcpy(conf->endpoint_domain_name, argv[0], sizeof(conf->endpoint_domain_name))
-	    >= sizeof(conf->endpoint_domain_name)) {
+	if (osmo_strlcpy(global_mgcp_client_conf->endpoint_domain_name, argv[0],
+			 sizeof(global_mgcp_client_conf->endpoint_domain_name))
+	    >= sizeof(global_mgcp_client_conf->endpoint_domain_name)) {
 		vty_out(vty, "%% Error: 'mgw endpoint-domain' name too long, max length is %zu: '%s'%s",
-			sizeof(conf->endpoint_domain_name) - 1, argv[0], VTY_NEWLINE);
+			sizeof(global_mgcp_client_conf->endpoint_domain_name) - 1, argv[0], VTY_NEWLINE);
 		return CMD_WARNING;
 	}
 	return CMD_SUCCESS;
 }

-DEFUN(cfg_mgw_reset_ep_name,
-      cfg_mgw_reset_ep_name_cmd,
-      "mgw reset-endpoint NAME",
-      MGW_STR "Add an endpoint name that should be reset (DLCX) on connect to the reset-endpoint list,"
-      "e.g. 'rtpbridge/*'\n"
-      "Endpoint name, e.g. 'rtpbridge/*' or 'ds/e1-0/s-3/su16-4'.\n")
-{
-	int rc;
-	struct reset_ep *reset_ep;
-	struct mgcp_client_conf *conf = get_mgcp_client_config(vty);
-
-	/* stop when the address is already in the list */
-	llist_for_each_entry(reset_ep, &conf->reset_epnames, list) {
-		if (strcmp(argv[0], reset_ep->name) == 0) {
-			vty_out(vty, "%% duplicate endpoint name configured ('%s')%s", argv[0], VTY_NEWLINE);
-			return CMD_WARNING;
-		}
-	}
-
-	/* the domain name is not part of the actual endpoint name */
-	if (strchr(argv[0], '@')) {
-		vty_out(vty, "%% the endpoint name must be given without domain name ('%s')%s",
-			argv[0], VTY_NEWLINE);
-		return CMD_WARNING;
-	}
-
-	reset_ep = talloc_zero(global_mgcp_client_ctx, struct reset_ep);
-	OSMO_ASSERT(reset_ep);
-
-	rc = osmo_strlcpy(reset_ep->name, argv[0], sizeof(reset_ep->name));
-	if (rc >= sizeof(reset_ep->name)) {
-		vty_out(vty, "%% Error: 'mgw reset-endpoint' name too long, max length is %zu: '%s'%s",
-			sizeof(reset_ep->name) - 1, argv[0], VTY_NEWLINE);
-		talloc_free(reset_ep);
-		return CMD_WARNING;
-	}
-
-	llist_add_tail(&reset_ep->list, &conf->reset_epnames);
-
-	return CMD_SUCCESS;
-}
-
-DEFUN(cfg_mgw_no_reset_ep_name,
-      cfg_mgw_no_reset_ep_name_cmd,
-      "no mgw reset-endpoint NAME",
-      NO_STR MGW_STR "remove an endpoint name from the reset-endpoint list, e.g. 'rtpbridge/*'\n"
-      "Endpoint name, e.g. 'rtpbridge/*' or 'ds/e1-0/s-3/su16-4'.\n")
-{
-	struct reset_ep *reset_ep;
-	struct mgcp_client_conf *conf = get_mgcp_client_config(vty);
-
-	llist_for_each_entry(reset_ep, &conf->reset_epnames, list) {
-		if (strcmp(argv[0], reset_ep->name) == 0) {
-			llist_del(&reset_ep->list);
-			talloc_free(reset_ep);
-			return CMD_SUCCESS;
-		}
-	}
-
-	vty_out(vty, "%% no such endpoint name configured ('%s')%s", argv[0], VTY_NEWLINE);
-	return CMD_WARNING;
-}
-
-static int config_write(struct vty *vty, const char *indent, struct mgcp_client_conf *conf)
+int mgcp_client_config_write(struct vty *vty, const char *indent)
 {
 	const char *addr;
 	int port;
-	struct reset_ep *reset_ep;

-	if (conf->description)
-		vty_out(vty, "%sdescription %s%s", indent, conf->description, VTY_NEWLINE);
-
-	addr = conf->local_addr;
+	addr = global_mgcp_client_conf->local_addr;
 	if (addr)
 		vty_out(vty, "%smgw local-ip %s%s", indent, addr,
 			VTY_NEWLINE);
-	port = conf->local_port;
+	port = global_mgcp_client_conf->local_port;
 	if (port >= 0)
 		vty_out(vty, "%smgw local-port %u%s", indent,
 			(uint16_t)port, VTY_NEWLINE);

-	addr = conf->remote_addr;
+	addr = global_mgcp_client_conf->remote_addr;
 	if (addr)
 		vty_out(vty, "%smgw remote-ip %s%s", indent, addr,
 			VTY_NEWLINE);
-	port = conf->remote_port;
+	port = global_mgcp_client_conf->remote_port;
 	if (port >= 0)
 		vty_out(vty, "%smgw remote-port %u%s", indent,
 			(uint16_t)port, VTY_NEWLINE);

-	if (conf->endpoint_domain_name[0])
+	if (global_mgcp_client_conf->endpoint_domain_name[0])
 		vty_out(vty, "%smgw endpoint-domain %s%s", indent,
-			conf->endpoint_domain_name, VTY_NEWLINE);
-
-	llist_for_each_entry(reset_ep, &conf->reset_epnames, list)
-		vty_out(vty, "%smgw reset-endpoint %s%s", indent, reset_ep->name, VTY_NEWLINE);
+			global_mgcp_client_conf->endpoint_domain_name, VTY_NEWLINE);

 	return CMD_SUCCESS;
 }

-/*! Write out MGCP client config to VTY.
- *  \param[in] vty VTY to which we should print.
- *  \param[in] string used for indentation (e.g. " ").
- *  \returns CMD_SUCCESS on success, CMD_WARNING on error */
-int mgcp_client_config_write(struct vty *vty, const char *indent)
-{
-	return config_write(vty, indent, global_mgcp_client_conf);
-}
-
-static void vty_init_common(void *talloc_ctx, int node)
+void mgcp_client_vty_init(void *talloc_ctx, int node, struct mgcp_client_conf *conf)
 {
 	global_mgcp_client_ctx = talloc_ctx;
+	global_mgcp_client_conf = conf;

 	install_lib_element(node, &cfg_mgw_local_ip_cmd);
 	install_lib_element(node, &cfg_mgw_local_port_cmd);
@@ -293,20 +197,6 @@ static void vty_init_common(void *talloc_ctx, int node)
 	install_lib_element(node, &cfg_mgw_endpoint_range_cmd);
 	install_lib_element(node, &cfg_mgw_rtp_bts_base_port_cmd);
 	install_lib_element(node, &cfg_mgw_endpoint_domain_name_cmd);
-	install_lib_element(node, &cfg_mgw_reset_ep_name_cmd);
-	install_lib_element(node, &cfg_mgw_no_reset_ep_name_cmd);
-
-	osmo_fsm_vty_add_cmds();
-}
-
-/*! Set up MGCP client VTY
- *  (called once at startup by the application process).
- *  \param[in] talloc_ctx talloc context to be used by the VTY for allocating memory.
- *  \param[in] node identifier of the node on which the VTY commands should be installed.
- *  \param[in] conf user provided memory to to store the MGCP client configuration data. */
-void mgcp_client_vty_init(void *talloc_ctx, int node, struct mgcp_client_conf *conf)
-{
-	global_mgcp_client_conf = conf;

 	/* deprecated 'mgcpgw' commands */
 	install_lib_element(node, &cfg_mgcpgw_local_ip_cmd);
@@ -316,242 +206,5 @@ void mgcp_client_vty_init(void *talloc_ctx, int node, struct mgcp_client_conf *c
 	install_lib_element(node, &cfg_mgcpgw_endpoint_range_cmd);
 	install_lib_element(node, &cfg_mgcpgw_rtp_bts_base_port_cmd);

-	vty_init_common(talloc_ctx, node);
-}
-
-static int config_write_pool(struct vty *vty)
-{
-	struct mgcp_client_pool *pool = global_mgcp_client_pool;
-	struct mgcp_client_pool_member *pool_member;
-	unsigned int indent_buf_len = strlen(pool->vty_indent) + 1 + 1;
-	char *indent = talloc_zero_size(vty, indent_buf_len);
-
-	snprintf(indent, indent_buf_len, "%s ", pool->vty_indent);
-
-	llist_for_each_entry(pool_member, &pool->pool, list) {
-		vty_out(vty, "%smgw %u%s", pool->vty_indent, pool_member->nr, VTY_NEWLINE);
-		config_write(vty, indent, &pool_member->conf);
-	}
-
-	talloc_free(indent);
-	return CMD_SUCCESS;
-}
-
-/* Lookup the selected MGCP client config by its reference number */
-static struct mgcp_client_pool_member *pool_member_by_nr(unsigned int nr)
-{
-	struct mgcp_client_pool_member *pool_member = NULL;
-	struct mgcp_client_pool_member *pool_member_tmp;
-
-	llist_for_each_entry(pool_member_tmp, &global_mgcp_client_pool->pool, list) {
-		if (pool_member_tmp->nr == nr) {
-			pool_member = pool_member_tmp;
-			break;
-		}
-	}
-
-	return pool_member;
-}
-
-DEFUN_ATTR(cfg_mgw,
-	   cfg_mgw_cmd, "mgw <0-255>", "Select a MGCP client config to setup\n" "reference number\n", CMD_ATTR_IMMEDIATE)
-{
-	int nr = atoi(argv[0]);
-	struct mgcp_client_pool_member *pool_member;
-
-	pool_member = pool_member_by_nr(nr);
-	if (!pool_member) {
-		pool_member = talloc_zero(global_mgcp_client_pool, struct mgcp_client_pool_member);
-		OSMO_ASSERT(pool_member);
-		mgcp_client_conf_init(&pool_member->conf);
-		pool_member->nr = nr;
-		llist_add_tail(&pool_member->list, &global_mgcp_client_pool->pool);
-	}
-
-	vty->index = &pool_member->conf;
-	vty->index_sub = &pool_member->conf.description;
-	vty->node = global_mgcp_client_pool->vty_node->node;
-
-	return CMD_SUCCESS;
-}
-
-DEFUN_ATTR(cfg_no_mgw,
-	   cfg_no_mgw_cmd,
-	   "no mgw <0-255>", NO_STR "Select a MGCP client config to remove\n" "reference number\n", CMD_ATTR_IMMEDIATE)
-{
-	int nr = atoi(argv[0]);
-	struct mgcp_client_pool_member *pool_member;
-
-	pool_member = pool_member_by_nr(nr);
-	if (!pool_member) {
-		vty_out(vty, "%% no such MGCP client configured ('%s')%s", argv[0], VTY_NEWLINE);
-		return CMD_WARNING;
-	}
-
-	/* Make sure that there are no ongoing calls */
-	if (pool_member->refcount > 0) {
-		vty_out(vty, "%% MGCP client (MGW %s) is still serving ongoing calls -- can't remove it now!%s",
-			mgcp_client_pool_member_name(pool_member), VTY_NEWLINE);
-		return CMD_WARNING;
-	}
-
-	llist_del(&pool_member->list);
-	if (pool_member->client) {
-		mgcp_client_disconnect(pool_member->client);
-		talloc_free(pool_member->client);
-	}
-	talloc_free(pool_member);
-
-	return CMD_SUCCESS;
-}
-
-DEFUN_ATTR(mgw_reconnect, mgw_reconnect_cmd,
-	   "mgw <0-255> reconnect",
-	   MGW_STR "reference number\n" "reconfigure and reconnect MGCP client\n", CMD_ATTR_IMMEDIATE)
-{
-	int nr = atoi(argv[0]);
-	struct mgcp_client_pool_member *pool_member = NULL;
-
-	pool_member = pool_member_by_nr(nr);
-	if (!pool_member) {
-		vty_out(vty, "%% no such MGCP client configured ('%s')%s", argv[0], VTY_NEWLINE);
-		return CMD_WARNING;
-	}
-
-	/* Make sure that there are no ongoing calls */
-	if (pool_member->refcount > 0) {
-		vty_out(vty, "%% MGCP client (MGW %s) is still serving ongoing calls -- can't reconnect it now!%s",
-			mgcp_client_pool_member_name(pool_member), VTY_NEWLINE);
-		return CMD_WARNING;
-	}
-
-	/* Get rid of a possibly existing old MGCP client instance first */
-	if (pool_member->client) {
-		mgcp_client_disconnect(pool_member->client);
-		talloc_free(pool_member->client);
-	}
-
-	/* Create a new MGCP client instance with the current config */
-	pool_member->client = mgcp_client_init(pool_member, &pool_member->conf);
-	if (!pool_member->client) {
-		LOGP(DLMGCP, LOGL_ERROR, "(manual) MGW %s initalization failed\n",
-		     mgcp_client_pool_member_name(pool_member));
-		vty_out(vty, "%% MGCP client (MGW %s) initalization failed ('%s')%s",
-			mgcp_client_pool_member_name(pool_member), argv[0], VTY_NEWLINE);
-		return CMD_WARNING;
-	}
-
-	/* Set backpointer so that we can detect later that this MGCP client is managed by this pool. */
-	pool_member->client->pool = global_mgcp_client_pool;
-
-	/* Connect client */
-	if (mgcp_client_connect(pool_member->client)) {
-		LOGP(DLMGCP, LOGL_ERROR, "(manual) MGW %s connect failed at (%s:%u)\n",
-		     mgcp_client_pool_member_name(pool_member), pool_member->conf.remote_addr,
-		     pool_member->conf.remote_port);
-		talloc_free(pool_member->client);
-		pool_member->client = NULL;
-		vty_out(vty, "%% MGCP client (MGW %s) initalization failed ('%s')%s",
-			mgcp_client_pool_member_name(pool_member), argv[0], VTY_NEWLINE);
-		return CMD_WARNING;
-	}
-
-	return CMD_SUCCESS;
-}
-
-DEFUN_ATTR(mgw_block, mgw_block_cmd,
-	   "mgw <0-255> block",
-	   MGW_STR "reference number\n" "block MGCP client so that it won't be used for new calls\n", CMD_ATTR_IMMEDIATE)
-{
-	int nr = atoi(argv[0]);
-	struct mgcp_client_pool_member *pool_member = NULL;
-
-	pool_member = pool_member_by_nr(nr);
-	if (!pool_member) {
-		vty_out(vty, "%% no such MGCP client configured ('%s')%s", argv[0], VTY_NEWLINE);
-		return CMD_WARNING;
-	}
-
-	pool_member->blocked = true;
-	return CMD_SUCCESS;
-}
-
-DEFUN_ATTR(mgw_unblock, mgw_unblock_cmd,
-	   "mgw <0-255> unblock",
-	   MGW_STR "reference number\n" "unblock MGCP client so that it will be available for new calls\n", CMD_ATTR_IMMEDIATE)
-{
-	int nr = atoi(argv[0]);
-	struct mgcp_client_pool_member *pool_member = NULL;
-
-	pool_member = pool_member_by_nr(nr);
-	if (!pool_member) {
-		vty_out(vty, "%% no such MGCP client configured ('%s')%s", argv[0], VTY_NEWLINE);
-		return CMD_WARNING;
-	}
-
-	pool_member->blocked = false;
-	return CMD_SUCCESS;
-}
-
-DEFUN(mgw_show, mgw_snow_cmd, "show mgw-pool", SHOW_STR "Display information about the MGW-Pool\n")
-{
-	vty_out(vty, "%% MGW-Pool:%s", VTY_NEWLINE);
-	struct mgcp_client_pool_member *pool_member;
-
-	if (llist_empty(&global_mgcp_client_pool->pool) && global_mgcp_client_pool->mgcp_client_single) {
-		vty_out(vty, "%%  (pool is empty, single MGCP client will be used)%s", VTY_NEWLINE);
-		return CMD_SUCCESS;
-	} else if (llist_empty(&global_mgcp_client_pool->pool)) {
-		vty_out(vty, "%%  (pool is empty)%s", VTY_NEWLINE);
-		return CMD_SUCCESS;
-	}
-
-	llist_for_each_entry(pool_member, &global_mgcp_client_pool->pool, list) {
-		vty_out(vty, "%%  MGW %s%s", mgcp_client_pool_member_name(pool_member), VTY_NEWLINE);
-		vty_out(vty, "%%   mgcp-client:   %s%s", pool_member->client ? "connected" : "disconnected",
-			VTY_NEWLINE);
-		vty_out(vty, "%%   service:       %s%s", pool_member->blocked ? "blocked" : "unblocked", VTY_NEWLINE);
-		vty_out(vty, "%%   ongoing calls: %u%s", pool_member->refcount, VTY_NEWLINE);
-	}
-	return CMD_SUCCESS;
-}
-
-/*! Set up MGCP client VTY (pooled)
- *  (called once at startup by the application process).
- *  \param[in] parent_node identifier of the parent node on which the mgw node appears.
- *  \param[in] mgw_node identifier that should be used with the newly installed MGW node.
- *  \param[in] indent indentation string to match the indentation in the VTY config
- *  \param[in] pool user provided memory to store the configured MGCP client (MGW) pool. */
-void mgcp_client_pool_vty_init(int parent_node, int mgw_node, const char *indent, struct mgcp_client_pool *pool)
-{
-	/* A pool must be allocated before this function can be called */
-	OSMO_ASSERT(pool);
-
-	/* Never allow this function to be called twice on the same pool */
-	OSMO_ASSERT(!pool->vty_indent);
-	OSMO_ASSERT(!pool->vty_node);
-
-	pool->vty_indent = talloc_strdup(pool, indent);
-	OSMO_ASSERT(pool->vty_indent);
-	pool->vty_node = talloc_zero(pool, struct cmd_node);
-	OSMO_ASSERT(pool->vty_node);
-	pool->vty_node->node = mgw_node;
-	pool->vty_node->vtysh = 1;
-	pool->vty_node->prompt = talloc_strdup(pool->vty_node, "%s(config-mgw)# ");
-
-	install_lib_element(parent_node, &cfg_mgw_cmd);
-	install_lib_element(parent_node, &cfg_no_mgw_cmd);
-
-	install_node(pool->vty_node, config_write_pool);
-	vty_init_common(pool, mgw_node);
-
-	install_element(mgw_node, &cfg_description_cmd);
-
-	install_lib_element(ENABLE_NODE, &mgw_reconnect_cmd);
-	install_lib_element(ENABLE_NODE, &mgw_block_cmd);
-	install_lib_element(ENABLE_NODE, &mgw_unblock_cmd);
-
-	install_lib_element_ve(&mgw_snow_cmd);
-
-	global_mgcp_client_pool = pool;
+	osmo_fsm_vty_add_cmds();
 }
--- a/src/libosmo-mgcp/Makefile.am
+++ b/src/libosmo-mgcp/Makefile.am
@@ -48,5 +48,4 @@ libosmo_mgcp_a_SOURCES = \
 	mgcp_ctrl.c \
 	mgcp_ratectr.c \
 	mgcp_e1.c \
-	mgcp_iuup.c \
 	$(NULL)
--- a/src/libosmo-mgcp/g711common.h
+++ b/src/libosmo-mgcp/g711common.h
@@ -14,6 +14,10 @@
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

 static inline int val_seg(int val)
--- a/src/libosmo-mgcp/mgcp_codec.c
+++ b/src/libosmo-mgcp/mgcp_codec.c
@@ -89,13 +89,15 @@ static void codec_init(struct mgcp_rtp_codec *codec)
 		.frame_duration_den = DEFAULT_RTP_AUDIO_FRAME_DUR_DEN,
 		.rate = DEFAULT_RTP_AUDIO_DEFAULT_RATE,
 		.channels = DEFAULT_RTP_AUDIO_DEFAULT_CHANNELS,
-		.subtype_name = "",
-		.audio_name = "",
 	};
 }

 static void codec_free(struct mgcp_rtp_codec *codec)
 {
+	if (codec->subtype_name)
+		talloc_free(codec->subtype_name);
+	if (codec->audio_name)
+		talloc_free(codec->audio_name);
 	*codec = (struct mgcp_rtp_codec){};
 }

@@ -122,8 +124,10 @@ int mgcp_codec_add(struct mgcp_conn_rtp *conn, int payload_type, const char *aud
 {
 	int rate;
 	int channels;
+	char audio_codec[64];
 	struct mgcp_rtp_codec *codec;
 	unsigned int pt_offset = conn->end.codecs_assigned;
+	void *ctx = conn->conn;

 	/* The amount of codecs we can store is limited, make sure we do not
 	 * overrun this limit. */
@@ -156,16 +160,16 @@ int mgcp_codec_add(struct mgcp_conn_rtp *conn, int payload_type, const char *aud
 	if (!audio_name) {
 		switch (payload_type) {
 		case 0:
-			strcpy(codec->audio_name, "PCMU/8000/1");
+			audio_name = talloc_strdup(ctx, "PCMU/8000/1");
 			break;
 		case 3:
-			strcpy(codec->audio_name, "GSM/8000/1");
+			audio_name = talloc_strdup(ctx, "GSM/8000/1");
 			break;
 		case 8:
-			strcpy(codec->audio_name, "PCMA/8000/1");
+			audio_name = talloc_strdup(ctx, "PCMA/8000/1");
 			break;
 		case 18:
-			strcpy(codec->audio_name, "G729/8000/1");
+			audio_name = talloc_strdup(ctx, "G729/8000/1");
 			break;
 		default:
 			/* The given payload type is not known to us, or it
@@ -175,36 +179,36 @@ int mgcp_codec_add(struct mgcp_conn_rtp *conn, int payload_type, const char *aud
 			     payload_type);
 			goto error;
 		}
-	} else {
-		OSMO_STRLCPY_ARRAY(codec->audio_name, audio_name);
 	}

 	/* Now we extract the codec subtype name, rate and channels. The latter
 	 * two are optional. If they are not present we use the safe defaults
 	 * above. */
-	if (strlen(codec->audio_name) >= sizeof(codec->subtype_name)) {
-		LOGP(DLMGCP, LOGL_ERROR, "Audio codec too long: %s\n", osmo_quote_str(codec->audio_name, -1));
+	if (strlen(audio_name) >= sizeof(audio_codec)) {
+		LOGP(DLMGCP, LOGL_ERROR, "Audio codec too long: %s\n", osmo_quote_str(audio_name, -1));
 		goto error;
 	}
 	channels = DEFAULT_RTP_AUDIO_DEFAULT_CHANNELS;
 	rate = DEFAULT_RTP_AUDIO_DEFAULT_RATE;
-	if (sscanf(codec->audio_name, "%63[^/]/%d/%d", codec->subtype_name, &rate, &channels) < 1) {
-		LOGP(DLMGCP, LOGL_ERROR, "Invalid audio codec: %s\n", osmo_quote_str(codec->audio_name, -1));
+	if (sscanf(audio_name, "%63[^/]/%d/%d", audio_codec, &rate, &channels) < 1) {
+		LOGP(DLMGCP, LOGL_ERROR, "Invalid audio codec: %s\n", osmo_quote_str(audio_name, -1));
 		goto error;
 	}

 	/* Note: We only accept configurations with one audio channel! */
 	if (channels != 1) {
 		LOGP(DLMGCP, LOGL_ERROR, "Cannot handle audio codec with more than one channel: %s\n",
-		     osmo_quote_str(codec->audio_name, -1));
+		     osmo_quote_str(audio_name, -1));
 		goto error;
 	}

 	codec->rate = rate;
 	codec->channels = channels;
+	codec->subtype_name = talloc_strdup(ctx, audio_codec);
+	codec->audio_name = talloc_strdup(ctx, audio_name);
 	codec->payload_type = payload_type;

-	if (!strcmp(codec->subtype_name, "G729")) {
+	if (!strcmp(audio_codec, "G729")) {
 		codec->frame_duration_num = 10;
 		codec->frame_duration_den = 1000;
 	} else {
@@ -283,7 +287,7 @@ static bool is_codec_compatible(const struct mgcp_endpoint *endp, const struct m
 	/* A codec name must be set, if not, this might mean that the codec
 	 * (payload type) that was assigned is unknown to us so we must stop
 	 * here. */
-	if (!strlen(codec->subtype_name))
+	if (!codec->subtype_name)
 		return false;

 	/* FIXME: implement meaningful checks to make sure that the given codec
@@ -355,7 +359,7 @@ int mgcp_codec_decide(struct mgcp_conn_rtp *conn)
 *
 * https://tools.ietf.org/html/rfc4867
 */
-bool mgcp_codec_amr_is_octet_aligned(const struct mgcp_rtp_codec *codec)
+static bool amr_is_octet_aligned(const struct mgcp_rtp_codec *codec)
 {
 	if (!codec->param_present)
 		return false;
@@ -378,10 +382,10 @@ static bool codecs_same(struct mgcp_rtp_codec *codec_a, struct mgcp_rtp_codec *c
 		return false;
 	if (strcmp(codec_a->subtype_name, codec_b->subtype_name))
 		return false;
-
-	/* Note: AMR allows to set the RTP payload format to octet-aligned or bandwith-efficient (octet-aligned=0)
-	 * via SDP. This difference concerns payload format only, but not the actual codec. It is not a difference
-	 * within the meaning of this function. */
+	if (!strcmp(codec_a->subtype_name, "AMR")) {
+		if (amr_is_octet_aligned(codec_a) != amr_is_octet_aligned(codec_b))
+			return false;
+	}

 	return true;
 }
@@ -417,7 +421,7 @@ int mgcp_codec_pt_translate(struct mgcp_conn_rtp *conn_src, struct mgcp_conn_rtp
 	if (!codec_src)
 		return -EINVAL;

-	/* Use the codec information from the source and try to find the
+	/* Use the codec infrmation from the source and try to find the
 	 * equivalent of it on the destination side */
 	codecs_assigned = rtp_dst->codecs_assigned;
 	OSMO_ASSERT(codecs_assigned <= MGCP_MAX_CODECS);
--- a/src/libosmo-mgcp/mgcp_conn.c
+++ b/src/libosmo-mgcp/mgcp_conn.c
@@ -21,7 +21,6 @@
 *
 */

-#include <stdatomic.h>
 #include <osmocom/mgcp/mgcp_conn.h>
 #include <osmocom/mgcp/mgcp_network.h>
 #include <osmocom/mgcp/mgcp_protocol.h>
@@ -30,8 +29,6 @@
 #include <osmocom/mgcp/mgcp_trunk.h>
 #include <osmocom/mgcp/mgcp_sdp.h>
 #include <osmocom/mgcp/mgcp_codec.h>
-#include <osmocom/mgcp/mgcp_iuup.h>
-
 #include <osmocom/gsm/gsm_utils.h>
 #include <osmocom/core/rate_ctr.h>
 #include <osmocom/core/timer.h>
@@ -92,7 +89,7 @@ static int mgcp_rtp_conn_init(struct mgcp_conn_rtp *conn_rtp, struct mgcp_conn *
 	/* FIXME: Each new rate counter group requires an unique index. At the
 	 * moment we generate this index using this counter, but perhaps there
 	 * is a more concious way to assign the indexes. */
-	static atomic_uint rate_ctr_index = 0;
+	static unsigned int rate_ctr_index = 0;

 	conn_rtp->type = MGCP_RTP_DEFAULT;
 	conn_rtp->osmux.cid_allocated = false;
@@ -110,15 +107,16 @@ static int mgcp_rtp_conn_init(struct mgcp_conn_rtp *conn_rtp, struct mgcp_conn *
 	/* Set default values */
 	end->frames_per_packet = 0;	/* unknown */
 	end->packet_duration_ms = DEFAULT_RTP_AUDIO_PACKET_DURATION_MS;
-	end->output_enabled = false;
+	end->output_enabled = 0;
 	end->maximum_packet_time = -1;

-	conn_rtp->rate_ctr_group = rate_ctr_group_alloc(conn, &rate_ctr_group_desc, rate_ctr_index++);
+	conn_rtp->rate_ctr_group = rate_ctr_group_alloc(conn, &rate_ctr_group_desc, rate_ctr_index);
 	if (!conn_rtp->rate_ctr_group)
 		return -1;

-	conn_rtp->state.in_stream.err_ts_ctr = rate_ctr_group_get_ctr(conn_rtp->rate_ctr_group, IN_STREAM_ERR_TSTMP_CTR);
-	conn_rtp->state.out_stream.err_ts_ctr = rate_ctr_group_get_ctr(conn_rtp->rate_ctr_group, OUT_STREAM_ERR_TSTMP_CTR);
+	conn_rtp->state.in_stream.err_ts_ctr = &conn_rtp->rate_ctr_group->ctr[IN_STREAM_ERR_TSTMP_CTR];
+	conn_rtp->state.out_stream.err_ts_ctr = &conn_rtp->rate_ctr_group->ctr[OUT_STREAM_ERR_TSTMP_CTR];
+	rate_ctr_index++;

 	/* Make sure codec table is reset */
 	mgcp_codec_reset_all(conn_rtp);
@@ -131,8 +129,6 @@ static void mgcp_rtp_conn_cleanup(struct mgcp_conn_rtp *conn_rtp)
 {
 	if (mgcp_conn_rtp_is_osmux(conn_rtp))
 		conn_osmux_disable(conn_rtp);
-	if (mgcp_conn_rtp_is_iuup(conn_rtp))
-		mgcp_conn_iuup_cleanup(conn_rtp);
 	mgcp_free_rtp_port(&conn_rtp->end);
 	rate_ctr_group_free(conn_rtp->rate_ctr_group);
 	mgcp_codec_reset_all(conn_rtp);
@@ -147,7 +143,7 @@ void mgcp_conn_watchdog_cb(void *data)

 void mgcp_conn_watchdog_kick(struct mgcp_conn *conn)
 {
-	int timeout = conn->endp->trunk->cfg->conn_timeout;
+	int timeout = conn->endp->cfg->conn_timeout;
 	if (!timeout)
 		return;

@@ -274,12 +270,12 @@ static void aggregate_rtp_conn_stats(struct mgcp_endpoint *endp, struct mgcp_con
 	OSMO_ASSERT(conn_stats->desc->num_ctr + 1 == all_stats->desc->num_ctr);

 	/* all other counters are [now] updated in real-time */
-	rate_ctr_add(rate_ctr_group_get_ctr(all_stats, IN_STREAM_ERR_TSTMP_CTR),
-		     rate_ctr_group_get_ctr(conn_stats, IN_STREAM_ERR_TSTMP_CTR)->current);
-	rate_ctr_add(rate_ctr_group_get_ctr(all_stats, OUT_STREAM_ERR_TSTMP_CTR),
-		     rate_ctr_group_get_ctr(conn_stats, OUT_STREAM_ERR_TSTMP_CTR)->current);
+	rate_ctr_add(&all_stats->ctr[IN_STREAM_ERR_TSTMP_CTR],
+		     conn_stats->ctr[IN_STREAM_ERR_TSTMP_CTR].current);
+	rate_ctr_add(&all_stats->ctr[OUT_STREAM_ERR_TSTMP_CTR],
+		     conn_stats->ctr[OUT_STREAM_ERR_TSTMP_CTR].current);

-	rate_ctr_inc(rate_ctr_group_get_ctr(all_stats, RTP_NUM_CONNECTIONS));
+	rate_ctr_inc(&all_stats->ctr[RTP_NUM_CONNECTIONS]);
 }

 /*! free a connection by its ID.
@@ -329,18 +325,15 @@ void mgcp_conn_free_oldest(struct mgcp_endpoint *endp)

 /*! free all connections at once.
 *  \param[in] endp associated endpoint */
-#if defined(__has_attribute)
-#if __has_attribute(no_sanitize)
-__attribute__((no_sanitize("undefined"))) /* ubsan detects a misaligned load */
-#endif
-#endif
 void mgcp_conn_free_all(struct mgcp_endpoint *endp)
 {
 	struct mgcp_conn *conn;
+	struct mgcp_conn *conn_tmp;

-	/* Drop all items in the list, might be consecutive! */
-	while ((conn = llist_first_entry_or_null(&endp->conns, struct mgcp_conn, entry)))
+	/* Drop all items in the list */
+	llist_for_each_entry_safe(conn, conn_tmp, &endp->conns, entry) {
 		mgcp_conn_free(endp, conn->id);
+	}

 	return;
 }
--- a/src/libosmo-mgcp/mgcp_e1.c
+++ b/src/libosmo-mgcp/mgcp_e1.c
@@ -192,12 +192,12 @@ static void e1_i460_mux_empty_cb(struct osmo_i460_subchan *schan, void *user_dat
 {
 	struct mgcp_endpoint *endp = user_data;
 	struct rate_ctr_group *rate_ctrs = endp->trunk->ratectr.e1_stats;
-	struct msgb *msg = msgb_alloc_c(endp->trunk, E1_TRAU_BITS_MSGB, "E1-I.460-IDLE-TX-TRAU-frame");
+	struct msgb *msg = msgb_alloc(E1_TRAU_BITS_MSGB, "E1-I.460-IDLE-TX-TRAU-frame");
 	uint8_t *ptr;
 	const uint8_t *ptr_ft;
 	enum osmo_trau_frame_type ft;

-	rate_ctr_inc(rate_ctr_group_get_ctr(rate_ctrs, E1_I460_TRAU_MUX_EMPTY_CTR));
+	rate_ctr_inc(&rate_ctrs->ctr[E1_I460_TRAU_MUX_EMPTY_CTR]);

 	/* Choose an appropiate idle frame type */
 	ft = endp->e1.trau_rtp_st->type;
@@ -238,9 +238,9 @@ static void e1_i460_demux_bits_cb(struct osmo_i460_subchan *schan, void *user_da
 * (the resulting frame will be prepended with an all-zero (12-byte) rtp header) */
 static void sync_frame_out_cb(void *user_data, const ubit_t *bits, unsigned int num_bits)
 {
+	struct msgb *msg = msgb_alloc(RTP_BUF_SIZE, "RTP-rx-from-E1");
 	unsigned int rtp_hdr_len = sizeof(struct rtp_hdr);
 	struct mgcp_endpoint *endp = user_data;
-	struct msgb *msg = msgb_alloc_c(endp->trunk, RTP_BUF_SIZE, "RTP-rx-from-E1");
 	struct rate_ctr_group *rate_ctrs = endp->trunk->ratectr.e1_stats;
 	struct mgcp_conn *conn_dst;
 	struct osmo_trau_frame fr;
@@ -304,7 +304,7 @@ static void sync_frame_out_cb(void *user_data, const ubit_t *bits, unsigned int
 	msgb_free(msg);
 	return;
 skip:
-	rate_ctr_inc(rate_ctr_group_get_ctr(rate_ctrs, E1_I460_TRAU_RX_FAIL_CTR));
+	rate_ctr_inc(&rate_ctrs->ctr[E1_I460_TRAU_RX_FAIL_CTR]);
 	msgb_free(msg);
 	return;
 }
@@ -312,7 +312,7 @@ skip:
 /* Function to handle outgoing E1 traffic */
 static void e1_send(struct e1inp_ts *ts, struct mgcp_trunk *trunk)
 {
-	struct msgb *msg = msgb_alloc_c(trunk, E1_TS_BYTES, "E1-TX-timeslot-bytes");
+	struct msgb *msg = msgb_alloc(E1_TS_BYTES, "E1-TX-timeslot-bytes");
 	uint8_t *ptr;

 	/* Get E1 frame from I.460 multiplexer */
@@ -337,8 +337,7 @@ static void e1_recv_cb(struct e1inp_ts *ts, struct msgb *msg)
 	/* Find associated trunk */
 	trunk = mgcp_trunk_by_line_num(cfg, ts->line->num);
 	if (!trunk) {
-		LOGP(DE1, LOGL_ERROR, "E1-RX: unable to find a trunk for E1-line %u!\n", ts->line->num);
-		msgb_free(msg);
+		LOGP(DE1, LOGL_DEBUG, "E1-RX: unable to find a trunk for E1-line %u!\n", ts->line->num);
 		return;
 	}

@@ -360,9 +359,6 @@ static void e1_recv_cb(struct e1inp_ts *ts, struct msgb *msg)

 	/* Trigger sending of pending E1 traffic */
 	e1_send(ts, trunk);
-
-	/* e1inp_rx_ts() does not free() msgb */
-	msgb_free(msg);
 }

 static int e1_init(struct mgcp_trunk *trunk, uint8_t ts_nr)
@@ -380,14 +376,14 @@ static int e1_init(struct mgcp_trunk *trunk, uint8_t ts_nr)
 	cfg = trunk->cfg;

 	if (trunk->e1.ts_in_use[ts_nr - 1]) {
-		LOGPTRUNK(trunk, DE1, LOGL_INFO, "E1 timeslot %u already set up, skipping...\n", ts_nr);
+		LOGPTRUNK(trunk, DE1, LOGL_DEBUG, "E1 timeslot %u already set up, skipping...\n", ts_nr);
 		return 0;
 	}

 	/* Get E1 line */
 	e1_line = e1inp_line_find(trunk->e1.vty_line_nr);
 	if (!e1_line) {
-		LOGPTRUNK(trunk, DE1, LOGL_ERROR, "no such E1 line %u - check VTY config!\n",
+		LOGPTRUNK(trunk, DE1, LOGL_DEBUG, "no such E1 line %u - check VTY config!\n",
 			  trunk->e1.vty_line_nr);
 		return -EINVAL;
 	}
@@ -405,7 +401,7 @@ static int e1_init(struct mgcp_trunk *trunk, uint8_t ts_nr)
 		return -EINVAL;
 	}

-	LOGPTRUNK(trunk, DE1, LOGL_INFO, "E1 timeslot %u set up successfully.\n", ts_nr);
+	LOGPTRUNK(trunk, DE1, LOGL_DEBUG, "E1 timeslot %u set up successfully.\n", ts_nr);
 	trunk->e1.ts_in_use[ts_nr - 1] = true;

 	return 0;
@@ -549,7 +545,7 @@ int mgcp_e1_endp_equip(struct mgcp_endpoint *endp, uint8_t ts, uint8_t ss, uint8
 	endp->e1.scd.mux.in_cb_queue_empty = e1_i460_mux_empty_cb;
 	endp->e1.scd.mux.user_data = endp;

-	LOGPENDP(endp, DE1, LOGL_INFO, "adding I.460 subchannel: ts=%u, bit_offset=%u, rate=%uk, num_bits=%lu\n", ts,
+	LOGPENDP(endp, DE1, LOGL_DEBUG, "adding I.460 subchannel: ts=%u, bit_offset=%u, rate=%uk, num_bits=%lu\n", ts,
 		 offs, e1_rates[ss], endp->e1.scd.demux.num_bits);
 	endp->e1.schan = osmo_i460_subchan_add(endp, &endp->trunk->e1.i460_ts[ts - 1], &endp->e1.scd);
 	if (!endp->e1.schan) {
@@ -626,7 +622,7 @@ void mgcp_e1_endp_release(struct mgcp_endpoint *endp)
 *  \returns 0 on success, -1 on ERROR. */
 int mgcp_e1_send_rtp(struct mgcp_endpoint *endp, struct mgcp_rtp_codec *codec, struct msgb *msg)
 {
-	struct msgb *msg_tf = msgb_alloc_c(endp->trunk, E1_TRAU_BITS_MSGB, "E1-I.460-TX-TRAU-frame");
+	struct msgb *msg_tf = msgb_alloc(E1_TRAU_BITS_MSGB, "E1-I.460-TX-TRAU-frame");
 	struct rate_ctr_group *rate_ctrs = endp->trunk->ratectr.e1_stats;
 	unsigned int rtp_hdr_len = sizeof(struct rtp_hdr);
 	struct osmo_trau_frame tf;
@@ -683,7 +679,7 @@ int mgcp_e1_send_rtp(struct mgcp_endpoint *endp, struct mgcp_rtp_codec *codec, s

 	return 0;
 skip:
-	rate_ctr_inc(rate_ctr_group_get_ctr(rate_ctrs, E1_I460_TRAU_TX_FAIL_CTR));
+	rate_ctr_inc(&rate_ctrs->ctr[E1_I460_TRAU_TX_FAIL_CTR]);
 	msgb_free(msg_tf);
 	return -1;
 }
--- a/src/libosmo-mgcp/mgcp_endp.c
+++ b/src/libosmo-mgcp/mgcp_endp.c
@@ -29,7 +29,6 @@

 #include <osmocom/abis/e1_input.h>
 #include <osmocom/mgcp/mgcp_e1.h>
-#include <osmocom/core/stat_item.h>

 #define E1_RATE_MAX 64
 #define E1_OFFS_MAX 8
@@ -59,7 +58,7 @@ static char *gen_virtual_epname(void *ctx, const char *domain,
 }

 /* Generate E1 endpoint name from given numeric parameters */
-static char *gen_e1_epname(void *ctx, const char *domain, unsigned int trunk_nr,
+static char *gen_e1_epname(void *ctx, const char *domain, uint8_t trunk_nr,
 			   uint8_t ts_nr, uint8_t ss_nr)
 {
 	unsigned int rate;
@@ -89,6 +88,7 @@ struct mgcp_endpoint *mgcp_endp_alloc(struct mgcp_trunk *trunk,
 		return NULL;

 	INIT_LLIST_HEAD(&endp->conns);
+	endp->cfg = trunk->cfg;
 	endp->trunk = trunk;

 	switch (trunk->trunk_type) {
@@ -122,12 +122,6 @@ void mgcp_endp_release(struct mgcp_endpoint *endp)
 	 * RSIP is executed), free them all at once. */
 	mgcp_conn_free_all(endp);

-	/* We must only decrement the stat item when the endpoint as actually
-	 * claimed. An endpoint is claimed when a call-id is set */
-	if (endp->callid)
-		osmo_stat_item_dec(osmo_stat_item_group_get_item(endp->trunk->stats.common,
-								 TRUNK_STAT_ENDPOINTS_USED), 1);
-
 	/* Reset endpoint parameters and states */
 	talloc_free(endp->callid);
 	endp->callid = NULL;
@@ -135,6 +129,7 @@ void mgcp_endp_release(struct mgcp_endpoint *endp)
 	endp->local_options.string = NULL;
 	talloc_free(endp->local_options.codec);
 	endp->local_options.codec = NULL;
+	endp->wildcarded_req = false;

 	if (endp->trunk->trunk_type == MGCP_TRUNK_E1)
 		mgcp_e1_endp_release(endp);
@@ -187,16 +182,12 @@ static void chop_epname_suffix(char *epname, const struct mgcp_trunk *trunk)
 	}
 }

-
- /*! Convert all characters in epname to lowercase and strip trunk prefix and
+/* Convert all characters in epname to lowercase and strip trunk prefix and
 * endpoint name suffix (domain name) from epname. The result is written to
 * to the memory pointed at by epname_stripped. The expected size of the
 * result is either equal or lower then the length of the input string
- * (epname)
- *  \param[out] epname_stripped pointer to store the stripped ep name.
- *  \param[in] epname endpoint name to lookup.
- *  \param[in] trunk where the endpoint is located. */
-void mgcp_endp_strip_name(char *epname_stripped, const char *epname,
+ * (epname) */
+static void strip_epname(char *epname_stripped, const char *epname,
 			 const struct mgcp_trunk *trunk)
 {
 	osmo_str_tolower_buf(epname_stripped, MGCP_ENDPOINT_MAXLEN, epname);
@@ -223,11 +214,9 @@ static struct mgcp_endpoint *find_free_endpoint(const struct mgcp_trunk *trunk)
 	return NULL;
 }

-/*! Find an endpoint of a trunk specified by its name.
- *  \param[in] epname endpoint name to check.
- *  \param[in] trunk mgcp_trunk that might have this endpoint.
- *  \returns NULL if no ep found, else endpoint. */
-struct mgcp_endpoint *mgcp_endp_find_specific(const char *epname,
+/* Find an endpoint specified by its name. If the endpoint can not be found,
+ * return NULL */
+static struct mgcp_endpoint *find_specific_endpoint(const char *epname,
 						    const struct mgcp_trunk *trunk)
 {
 	char epname_stripped[MGCP_ENDPOINT_MAXLEN];
@@ -236,11 +225,11 @@ struct mgcp_endpoint *mgcp_endp_find_specific(const char *epname,
 	unsigned int i;

 	/* Strip irrelevant information from the endpoint name */
-	mgcp_endp_strip_name(epname_stripped, epname, trunk);
+	strip_epname(epname_stripped, epname, trunk);

 	for (i = 0; i < trunk->number_endpoints; i++) {
 		endp = trunk->endpoints[i];
-		mgcp_endp_strip_name(epname_stripped_endp, endp->name, trunk);
+		strip_epname(epname_stripped_endp, endp->name, trunk);
 		if (strcmp(epname_stripped_endp, epname_stripped) == 0)
 			return endp;
 	}
@@ -248,18 +237,6 @@ struct mgcp_endpoint *mgcp_endp_find_specific(const char *epname,
 	return NULL;
 }

-/*! Check if the given epname refers to a wildcarded request or to a specific
- *  endpoint.
- *  \param[in] epname endpoint name to check
- *  \returns true if epname refers to wildcarded request, else false. */
-bool mgcp_endp_is_wildcarded(const char *epname)
-{
-	if (strstr(epname, "*"))
-		return true;
-
-	return false;
-}
-
 /*! Find an endpoint by its name on a specified trunk.
 *  \param[out] cause pointer to store cause code, can be NULL.
 *  \param[in] epname endpoint name to lookup.
@@ -276,12 +253,13 @@ struct mgcp_endpoint *mgcp_endp_by_name_trunk(int *cause, const char *epname,
 	/* At the moment we only support a primitive ('*'-only) method of
 	 * wildcarded endpoint searches that picks the next free endpoint on
 	 * a trunk. */
-	if (mgcp_endp_is_wildcarded(epname)) {
+	if (strstr(epname, "*")) {
 		endp = find_free_endpoint(trunk);
 		if (endp) {
 			LOGPENDP(endp, DLMGCP, LOGL_DEBUG,
 				 "(trunk:%d) found free endpoint: %s\n",
 				 trunk->trunk_nr, endp->name);
+			endp->wildcarded_req = true;
 			return endp;
 		}

@@ -295,11 +273,12 @@ struct mgcp_endpoint *mgcp_endp_by_name_trunk(int *cause, const char *epname,

 	/* Find an endpoint by its name (if wildcarded request is not
 	 * applicable) */
-	endp = mgcp_endp_find_specific(epname, trunk);
+	endp = find_specific_endpoint(epname, trunk);
 	if (endp) {
 		LOGPENDP(endp, DLMGCP, LOGL_DEBUG,
 			 "(trunk:%d) found endpoint: %s\n",
 			 trunk->trunk_nr, endp->name);
+		endp->wildcarded_req = false;
 		return endp;
 	}

@@ -312,6 +291,32 @@ struct mgcp_endpoint *mgcp_endp_by_name_trunk(int *cause, const char *epname,
 	return NULL;
 }

+/* Check if the domain name, which is supplied with the endpoint name
+ * matches the configuration. */
+static int check_domain_name(const char *epname, struct mgcp_config *cfg)
+{
+	char *domain_to_check;
+
+	domain_to_check = strstr(epname, "@");
+	if (!domain_to_check) {
+		LOGP(DLMGCP, LOGL_ERROR, "missing domain name in endpoint name \"%s\", expecting \"%s\"\n",
+		     epname, cfg->domain);
+		return -EINVAL;
+	}
+
+	/* Accept any domain if configured as "*" */
+	if (!strcmp(cfg->domain, "*"))
+		return 0;
+
+	if (strcmp(domain_to_check+1, cfg->domain) != 0) {
+		LOGP(DLMGCP, LOGL_ERROR, "wrong domain name in endpoint name \"%s\", expecting \"%s\"\n",
+		     epname, cfg->domain);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 /*! Find an endpoint by its name, search at all trunks.
 *  \param[out] cause, pointer to store cause code, can be NULL.
 *  \param[in] epname, must contain trunk prefix.
@@ -335,6 +340,10 @@ struct mgcp_endpoint *mgcp_endp_by_name(int *cause, const char *epname,
 	if (!trunk)
 		return NULL;

+	/* All endpoint names require a domain as suffix */
+	if (check_domain_name(epname, cfg))
+		return NULL;
+
 	/* Identify the endpoint on the trunk */
        endp = mgcp_endp_by_name_trunk(cause, epname, trunk);
 	if (!endp) {
@@ -546,7 +555,7 @@ static bool endp_avail_e1(struct mgcp_endpoint *endp)
 		epname_check = gen_e1_epname(endp, endp->trunk->cfg->domain,
 					     endp->trunk->trunk_nr, ts_nr,
 					     interlock[i]);
-		endp_check = mgcp_endp_find_specific(epname_check, endp->trunk);
+		endp_check = find_specific_endpoint(epname_check, endp->trunk);
 		if (!endp_check) {
 			LOGPENDP(endp, DLMGCP, LOGL_ERROR,
 				 "cannot check endpoint availability, overlapping endpoint:%s not found!\n",
@@ -610,8 +619,6 @@ int mgcp_endp_claim(struct mgcp_endpoint *endp, const char *callid)
 	 * connection ids) */
 	endp->callid = talloc_strdup(endp, callid);
 	OSMO_ASSERT(endp->callid);
-	osmo_stat_item_inc(osmo_stat_item_group_get_item(endp->trunk->stats.common,
-							 TRUNK_STAT_ENDPOINTS_USED), 1);

 	/* Allocate resources */
 	switch (endp->trunk->trunk_type) {
--- a/src/libosmo-mgcp/mgcp_iuup.c
+++ b/src/libosmo-mgcp/mgcp_iuup.c
@@ -1,745 +0,0 @@
-/*
- * (C) 2021 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
- * All rights not specifically granted under this license are reserved.
- *
- * Author: Pau Espin Pedrol
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Affero General Public License as published by the
- * Free Software Foundation; either version 3 of the License, or (at your
- * option) any later version.
- */
-
-#include <stdint.h>
-
-#include <osmocom/core/byteswap.h>
-
-#include <osmocom/gsm/iuup.h>
-
-#include <osmocom/netif/rtp.h>
-#include <osmocom/netif/amr.h>
-
-#include <osmocom/mgcp/mgcp_conn.h>
-#include <osmocom/mgcp/mgcp_iuup.h>
-#include <osmocom/mgcp/mgcp_endp.h>
-#include <osmocom/mgcp/mgcp_codec.h>
-#include <osmocom/mgcp/mgcp_network.h>
-#include <osmocom/mgcp/debug.h>
-
-#define MGW_IUUP_MSGB_SIZE 4096
-
-static const struct osmo_iuup_rnl_config def_configure_req = {
-	.transparent = false,
-	.active = true,
-	.supported_versions_mask = 0x0003,
-	.num_rfci = 0,
-	.num_subflows = 0,
-	.IPTIs_present = false,
-	.t_init = { .t_ms = IUUP_TIMER_INIT_T_DEFAULT, .n_max = IUUP_TIMER_INIT_N_DEFAULT },
-	.t_ta = { .t_ms = IUUP_TIMER_TA_T_DEFAULT, .n_max = IUUP_TIMER_TA_N_DEFAULT },
-	.t_rc = { .t_ms = IUUP_TIMER_RC_T_DEFAULT, .n_max = IUUP_TIMER_RC_N_DEFAULT },
-};
-
-/* Find a destination connection. */
-static struct mgcp_conn *_find_dst_conn(struct mgcp_conn *conn)
-{
-	/* NOTE: This code path runs every time an RTP packet is received. The
-	 * function mgcp_find_dst_conn() we use to determine the detination
-	 * connection will iterate the connection list inside the endpoint.
-	 * Since list iterations are quite costly, we will figure out the
-	 * destination only once and use the optional private data pointer of
-	 * the connection to cache the destination connection pointer. */
-
-	struct mgcp_conn *conn_dst;
-	if (!conn->priv) {
-		conn_dst = mgcp_find_dst_conn(conn);
-		conn->priv = conn_dst;
-	} else {
-		conn_dst = (struct mgcp_conn *)conn->priv;
-	}
-	return conn_dst;
-}
-
-/* Find RFCI containing all 0 sizes, -1 if not found. irp is an Initialization.ind prim */
-static int _find_rfci_no_data(struct osmo_iuup_rnl_prim *irp)
-{
-	int i;
-	uint8_t rfci_cnt = 0;
-	/* Find RFCI containing NO_DATA: */
-	for (i = 0; i < ARRAY_SIZE(irp->u.status.u.initialization.rfci); i++) {
-		struct osmo_iuup_rfci *rfci = &irp->u.status.u.initialization.rfci[i];
-		int j;
-		bool is_no_data;
-		if (!rfci->used)
-			continue;
-		rfci_cnt++;
-
-		is_no_data = true;
-		for (j = 0; j < irp->u.status.u.initialization.num_subflows; j++) {
-			if (rfci->subflow_sizes[j]) {
-				is_no_data = false;
-				break;
-			}
-		}
-		if (is_no_data)
-			return rfci->id;
-
-		/* early loop termination: */
-		if (rfci_cnt == irp->u.status.u.initialization.num_subflows)
-			break;
-	}
-	return -1;
-}
-
-/* Lookup RFCI to use for specific AMR codec type. -1 if none found */
-static int8_t _conn_iuup_amr_ft_2_rfci(struct mgcp_conn_rtp *conn_rtp, uint8_t ft)
-{
-	int8_t i;
-	uint8_t rfci_cnt = 0;
-	unsigned match_bytes = (unsigned)osmo_amr_bytes(ft);
-	struct osmo_iuup_rnl_prim *irp = conn_rtp->iuup.init_ind;
-	OSMO_ASSERT(irp);
-
-	/* TODO: cache this somehow */
-	for (i = 0; i < ARRAY_SIZE(irp->u.status.u.initialization.rfci); i++) {
-		struct osmo_iuup_rfci *rfci = &irp->u.status.u.initialization.rfci[i];
-		int j;
-		unsigned num_bits;
-		if (!rfci->used)
-			continue;
-		rfci_cnt++;
-
-		num_bits = 0;
-		for (j = 0; j < irp->u.status.u.initialization.num_subflows; j++)
-			num_bits += rfci->subflow_sizes[j];
-		if (match_bytes == (num_bits + 7)/8)
-			return rfci->id;
-
-		/* early loop termination: */
-		if (rfci_cnt == irp->u.status.u.initialization.num_subflows)
-			break;
-	}
-	return -1;
-}
-
-/* Helper function to configure IuUP layer FSM as Init-Passive, based on default config */
-static int _conn_iuup_configure_as_passive(struct mgcp_conn_rtp *conn_rtp)
-{
-	struct osmo_iuup_rnl_prim *irp;
-	int rc;
-
-	conn_rtp->iuup.active_init = false;
-
-	/* Tx CONFIG.req */
-	irp = osmo_iuup_rnl_prim_alloc(conn_rtp->conn, OSMO_IUUP_RNL_CONFIG, PRIM_OP_REQUEST, MGW_IUUP_MSGB_SIZE);
-	irp->u.config = def_configure_req;
-	irp->u.config.active = conn_rtp->iuup.active_init;
-	if ((rc = osmo_iuup_rnl_prim_down(conn_rtp->iuup.iui, irp)) == 0)
-		conn_rtp->iuup.configured = true;
-	else
-		LOG_CONN_RTP(conn_rtp, LOGL_ERROR, "Failed configuring IuUP layer\n");
-	return rc;
-}
-
-/* Helper function to configure IuUP layer FSM as Init-Active, based on received
- * RNL Status-Init primitive from the sister IuUP connection we will bridge to. */
-static int _conn_iuup_configure_as_active(struct mgcp_conn_rtp *conn_rtp, struct osmo_iuup_rnl_prim *init_ind)
-{
-	struct osmo_iuup_rnl_prim *irp = init_ind;
-	struct osmo_iuup_rnl_prim *irp2;
-	struct msgb *msg;
-	bool prev_output_enabled;
-	int rc;
-
-	conn_rtp->iuup.active_init = true;
-
-	/* Find RFCI containing NO_DATA: */
-	conn_rtp->iuup.rfci_id_no_data = _find_rfci_no_data(init_ind);
-
-	/* Copy over the rfci_id_no_data, since we reuse the same subflow set: */
-	msg = msgb_copy_c(conn_rtp->conn, irp->oph.msg, "iuup-init-copy");
-	conn_rtp->iuup.init_ind = (struct osmo_iuup_rnl_prim *)msgb_data(msg);
-	conn_rtp->iuup.init_ind->oph.msg = msg;
-
-	/* Tx CONFIG.req */
-	irp2 = osmo_iuup_rnl_prim_alloc(conn_rtp->conn, OSMO_IUUP_RNL_CONFIG, PRIM_OP_REQUEST, MGW_IUUP_MSGB_SIZE);
-	irp2->u.config.transparent = false;
-	irp2->u.config.active = conn_rtp->iuup.active_init;
-	irp2->u.config.data_pdu_type = irp->u.status.u.initialization.data_pdu_type;
-	irp2->u.config.supported_versions_mask = def_configure_req.supported_versions_mask;
-	irp2->u.config.num_rfci = irp->u.status.u.initialization.num_rfci;
-	irp2->u.config.num_subflows = irp->u.status.u.initialization.num_subflows;
-	irp2->u.config.IPTIs_present = irp->u.status.u.initialization.IPTIs_present;
-	memcpy(irp2->u.config.rfci, irp->u.status.u.initialization.rfci, sizeof(irp2->u.config.rfci));
-	irp2->u.config.t_init = def_configure_req.t_init;
-	irp2->u.config.t_ta = def_configure_req.t_ta;
-	irp2->u.config.t_rc = def_configure_req.t_rc;
-
-	/* We need to force allowance of RTP containing Init-ACK back: */
-	prev_output_enabled = conn_rtp->end.output_enabled;
-	conn_rtp->end.output_enabled = true;
-
-	if ((rc = osmo_iuup_rnl_prim_down(conn_rtp->iuup.iui, irp2)) == 0)
-		conn_rtp->iuup.configured = true;
-	else
-		LOG_CONN_RTP(conn_rtp, LOGL_ERROR, "Failed configuring IuUP layer\n");
-
-	conn_rtp->end.output_enabled = prev_output_enabled;
-	return rc;
-}
-
-/* Helper function to push an RTP+IuUP pkt up to the IuUP layer FSM through the
- * TNL primitive interface. */
-static int _conn_iuup_rtp_pl_up(struct mgcp_conn_rtp *conn_rtp, struct msgb *msg)
-{
-	/* Send RTP payload (IuUP) up the stack: */
-	struct osmo_iuup_tnl_prim *itp;
-	int rc;
-
-	msg->l2h = msgb_data(msg) + sizeof(struct rtp_hdr);
-
-	itp = osmo_iuup_tnl_prim_alloc(conn_rtp->conn, OSMO_IUUP_TNL_UNITDATA, PRIM_OP_INDICATION, MGW_IUUP_MSGB_SIZE);
-	itp->oph.msg->l2h = msgb_put(itp->oph.msg, msgb_l2len(msg));
-	memcpy(itp->oph.msg->l2h, msgb_l2(msg), msgb_l2len(msg));
-	if ((rc = osmo_iuup_tnl_prim_up(conn_rtp->iuup.iui, itp)) != 0) {
-		LOG_CONN_RTP(conn_rtp, LOGL_ERROR, "Failed passing IuUP-Init to IuUP layer\n");
-	}
-	return rc;
-}
-
-static int check_rtp_iuup(const struct mgcp_conn_rtp *conn_rtp, struct msgb *msg)
-{
-	size_t min_size = sizeof(struct rtp_hdr);
-	/* Check there's at least 2 bytes of RTP payload (IuUP header). This is
-	 ** mainly to avoid 0-byte payload copy cases */
-	if (msgb_length(msg) < sizeof(struct rtp_hdr) + 2) {
-		LOG_CONN_RTP(conn_rtp, LOGL_ERROR, "RTP-IuUP packet too short (%u < %zu)\n",
-			     msgb_length(msg), min_size);
-		return -1;
-	}
-	return 0;
-}
-
-/* Bridge received IuUP packet in conn_rtp_src to conn_rtp_dst, an IuUP sister
- * conn in the endpoint. The function takes ownsership of the irp */
-static int bridge_iuup_to_iuup_peer(struct mgcp_conn_rtp *conn_rtp_src, struct mgcp_conn_rtp *conn_rtp_dst, struct osmo_iuup_rnl_prim *irp)
-{
-	int rc;
-
-	/* If we are not configured and we received bridged data, it means
-	 * conn_rtp_src is already configured and INITed, and we can infer
-	 * conn_rtp_src is Init-passive (RNC side), so conn_rtp_dst needs to be
-	 * configured as INIT-active: */
-	if (!conn_rtp_dst->iuup.configured) {
-		OSMO_ASSERT(conn_rtp_src->iuup.init_ind);
-		rc = _conn_iuup_configure_as_active(conn_rtp_dst, conn_rtp_src->iuup.init_ind);
-		if (rc < 0) {
-			msgb_free(irp->oph.msg);
-			return rc;
-		}
-	}
-
-	/* We simply forward the msg, without freeing it: */
-	talloc_steal(conn_rtp_dst->conn, irp->oph.msg);
-	irp->oph.operation = PRIM_OP_REQUEST;
-	if ((rc = osmo_iuup_rnl_prim_down(conn_rtp_dst->iuup.iui, irp)) != 0)
-		LOG_CONN_RTP(conn_rtp_dst, LOGL_ERROR, "Failed Tx data down to IuUP layer\n");
-	return rc;
-}
-
-/* Bridge received IuUP packet in conn_rtp_src to conn_rtp_dst, an RTP (no IuUP)
- * sister conn in the endpoint. The function takes ownsership of the irp */
-static int bridge_iuup_to_rtp_peer(struct mgcp_conn_rtp *conn_rtp_src, struct mgcp_conn_rtp *conn_rtp_dst, struct osmo_iuup_rnl_prim *irp)
-{
-	/* FIXME: We probably need transcoding here?! Or at least look up AMR modes and translate to related RFCI */
-	uint8_t frame_nr = irp->u.data.frame_nr;
-	uint8_t fqc = irp->u.data.fqc;
-	struct msgb *msg = irp->oph.msg;
-	ssize_t amr_length = 0;
-	int ft;
-	uint8_t *amr_data;
-	struct rtp_hdr *rtp_hdr;
-	struct amr_hdr *amr_hdr;
-	int rc;
-
-	ft = osmo_amr_bytes_to_ft(msgb_l3len(msg));
-	if (ft < 0) {
-		LOGPCONN(conn_rtp_src->conn, DRTP, LOGL_ERROR,
-			 "Unknown AMR format for size %u\n", msgb_l3len(msg));
-		msgb_free(msg);
-		return ft;
-	}
-	msgb_pull_to_l3(msg);
-	LOGP(DLMGCP, LOGL_DEBUG, "Convert IuUP -> AMR: ft %d, len %d\n", ft, msgb_l3len(msg));
-
-	if (mgcp_codec_amr_is_octet_aligned(conn_rtp_dst->end.codec)) {
-		amr_hdr = (struct amr_hdr *) msgb_push(msg, sizeof(struct amr_hdr));
-		amr_hdr->cmr = 15; /* no change */
-		amr_hdr->f = 0;
-		amr_hdr->q = !fqc;
-		amr_hdr->ft = ft & 0xff;
-		amr_hdr->pad1 = 0;
-		amr_hdr->pad2 = 0;
-	} else {
-		OSMO_ASSERT(msgb_tailroom(msg) >= 2);
-		msgb_put(msg, 2);
-		osmo_amr_iuup_to_bwe(msgb_data(msg), msgb_length(msg) - 2, msgb_length(msg) + 2);
-		/* fill bwe header */
-		amr_data = msgb_data(msg);
-		/* CMR no change      | follow bit | ft (3 of 4 bits) */
-		amr_data[0] = 15 << 4 | (0 << 3) | (ft >> 1);
-		amr_data[1] |= ((ft & 0x1) << 7) | (((!fqc) & 0x1) << 6);
-		amr_length = (osmo_amr_bits(ft) + 10 + 7) / 8;
-		msgb_trim(msg, amr_length);
-	}
-	rtp_hdr = (struct rtp_hdr *) msgb_push(msg, sizeof(*rtp_hdr));
-	*rtp_hdr = (struct rtp_hdr){
-		.csrc_count = 0,
-		.extension = 0,
-		.padding = 0,
-		.version = 0,
-		.payload_type = conn_rtp_dst->end.codec->payload_type,
-		.marker = 0,
-		.sequence = frame_nr,
-		.timestamp = 0,
-		.ssrc = 0
-	};
-
-	rc = mgcp_send(conn_rtp_dst->conn->endp, true, NULL, msg, conn_rtp_src, conn_rtp_dst);
-	msgb_free(msg);
-	return rc;
-}
-
-/* Handle RNL Data primitive received from the IuUP layer FSM: Bridge it to the
- * sister connection in the endpoint: */
-static int _conn_iuup_rx_rnl_data(struct mgcp_conn_rtp *conn_rtp_src, struct osmo_iuup_rnl_prim *irp)
-{
-	struct mgcp_conn *conn_dst;
-	struct mgcp_conn_rtp *conn_rtp_dst;
-	int rc;
-
-	conn_dst = _find_dst_conn(conn_rtp_src->conn);
-
-	/* There is no destination conn, stop here */
-	if (!conn_dst) {
-		LOGPCONN(conn_rtp_src->conn, DRTP, LOGL_DEBUG,
-			 "no connection to forward an incoming IuUP payload to\n");
-		rc = -1;
-		goto free_ret;
-	}
-
-	/* The destination conn is not an RTP/IuUP connection */
-	if (conn_dst->type != MGCP_CONN_TYPE_RTP) {
-		LOGPCONN(conn_rtp_src->conn, DRTP, LOGL_ERROR,
-			 "unable to find suitable destination conn\n");
-		 rc = -1;
-		goto free_ret;
-	}
-	conn_rtp_dst = &conn_dst->u.rtp;
-
-	switch (conn_rtp_dst->type) {
-	case MGCP_RTP_IUUP:
-		return bridge_iuup_to_iuup_peer(conn_rtp_src, conn_rtp_dst, irp);
-	case MGCP_RTP_DEFAULT:
-		return bridge_iuup_to_rtp_peer(conn_rtp_src, conn_rtp_dst, irp);
-	case MGCP_OSMUX_BSC:
-	case MGCP_OSMUX_BSC_NAT:
-	default:
-		LOGPCONN(conn_rtp_src->conn, DRTP, LOGL_ERROR,
-			 "Forward of IuUP payload to RTP connection type %u not supported!\n",
-			 conn_rtp_dst->type);
-		rc = 0;
-	}
-
-free_ret:
-	msgb_free(irp->oph.msg);
-	return rc;
-}
-
-/* Handle RNL Status-Init primitive received from the IuUP layer FSM.
- * Potentially configure sister conn as IuUP Init-Active: */
-static int _conn_iuup_rx_rnl_status_init(struct mgcp_conn_rtp *conn_rtp_src, struct osmo_iuup_rnl_prim *irp)
-{
-	struct mgcp_conn *conn_dst;
-	struct mgcp_conn_rtp *conn_rtp_dst;
-	int rc = 0;
-	struct msgb *msg;
-
-	if (conn_rtp_src->iuup.init_ind) {
-		/* We received more than one IuUP Initialization. It's probably
-		 * a retransmission, so simply ignore it (lower layers take care
-		 * of ACKing it). */
-		LOGPCONN(conn_rtp_src->conn, DRTP, LOGL_INFO,
-		  "Ignoring potential IuUP Initialization retrans\n");
-		return 0;
-	}
-
-	msg = msgb_copy_c(conn_rtp_src->conn, irp->oph.msg, "iuup-init-copy");
-	conn_rtp_src->iuup.init_ind = (struct osmo_iuup_rnl_prim *)msgb_data(msg);
-	conn_rtp_src->iuup.init_ind->oph.msg = msg;
-
-	/* Find RFCI containing NO_DATA: */
-	conn_rtp_src->iuup.rfci_id_no_data = _find_rfci_no_data(irp);
-
-	conn_dst = _find_dst_conn(conn_rtp_src->conn);
-	/* If not yet there, peer will potentially be IuUP-Initialized later
-	 * when we attempt to bridge audio towards it. See bridge_iuup_to_iuup_peer() */
-	if (!conn_dst)
-		return 0;
-	conn_rtp_dst = &conn_dst->u.rtp;
-	if (!mgcp_conn_rtp_is_iuup(conn_rtp_dst))
-		return 0; /* Nothing to do */
-
-	/* We received IuUP parameters on the peer (RNC), Init actively this conn (against CN): */
-	if (!conn_rtp_dst->iuup.configured)
-		rc = _conn_iuup_configure_as_active(conn_rtp_dst, irp);
-
-	return rc;
-}
-
-/* Handle RNL Status primitives received from the IuUP layer FSM: */
-static int _conn_iuup_rx_rnl_status(struct mgcp_conn_rtp *conn_rtp_src, struct osmo_iuup_rnl_prim *irp)
-{
-	int rc;
-
-	switch (irp->u.status.procedure) {
-	case IUUP_PROC_INIT:
-		rc = _conn_iuup_rx_rnl_status_init(conn_rtp_src, irp);
-		break;
-	case IUUP_PROC_RATE_CTRL:
-	case IUUP_PROC_TIME_ALIGN:
-	case IUUP_PROC_ERR_EVENT:
-	default:
-		LOG_CONN_RTP(conn_rtp_src, LOGL_ERROR,
-			     "Received IuUP RNL STATUS procedure type %u not handled\n",
-			     irp->u.status.procedure);
-		rc = 0;
-	}
-
-	return rc;
-}
-
-/* Received RNL primitive from the IuUP layer FSM containing IuUP Status or
- * data. Continue pushing it up the stack, either IuUP Status or Data: */
-static int _conn_iuup_user_prim_cb(struct osmo_prim_hdr *oph, void *ctx)
-{
-	struct mgcp_conn_rtp *conn_rtp_src = ctx;
-	struct osmo_iuup_rnl_prim *irp = (struct osmo_iuup_rnl_prim *)oph;
-	struct msgb *msg = oph->msg;
-	int rc;
-
-	switch (OSMO_PRIM_HDR(&irp->oph)) {
-	case OSMO_PRIM(OSMO_IUUP_RNL_DATA, PRIM_OP_INDICATION):
-		/* we pass ownsership of msg here: */
-		rc = _conn_iuup_rx_rnl_data(conn_rtp_src, irp);
-		break;
-	case OSMO_PRIM(OSMO_IUUP_RNL_STATUS, PRIM_OP_INDICATION):
-		rc = _conn_iuup_rx_rnl_status(conn_rtp_src, irp);
-		msgb_free(msg);
-		break;
-	default:
-		msgb_free(msg);
-		OSMO_ASSERT(false);
-	}
-
-	return rc;
-}
-
-/*! Send |RTP+IuUP| data down the stack of the specified destination connection.
- *  \param[in] endp associated endpoint (for configuration, logging).
- *  \param[in] buf buffer that contains the |RTP+IuUP| data.
- *  \param[in] len length of the buffer that contains the |RTP+IuUP| data.
- *  \param[in] conn_src associated source connection.
- *  \param[in] conn_dst associated destination connection.
- *  \returns 0 on success, -1 on ERROR. */
-static int mgcp_send_iuup(struct mgcp_endpoint *endp, struct msgb *msg,
-		   struct mgcp_conn_rtp *conn_src, struct mgcp_conn_rtp *conn_dst)
-{
-	/*! When no destination connection is available (e.g. when only one
-	 *  connection in loopback mode exists), then the source connection
-	 *  shall be specified as destination connection */
-
-	struct mgcp_rtp_end *rtp_end;
-	struct mgcp_rtp_state *rtp_state;
-	char ipbuf[INET6_ADDRSTRLEN];
-	struct rtp_hdr *hdr = (struct rtp_hdr *)msgb_data(msg);
-	int buflen = msgb_length(msg);
-	char *dest_name;
-	int len;
-
-	OSMO_ASSERT(conn_src);
-	OSMO_ASSERT(conn_dst);
-
-	LOGPENDP(endp, DRTP, LOGL_DEBUG, "delivering IuUP packet...\n");
-
-	/* Note: In case of loopback configuration, both, the source and the
-	 * destination will point to the same connection. */
-	rtp_end = &conn_dst->end;
-	rtp_state = &conn_src->state;
-	dest_name = conn_dst->conn->name;
-
-	/* Ensure we have an alternative SSRC in case we need it, see also
-	 * gen_rtp_header() */
-	if (rtp_state->alt_rtp_tx_ssrc == 0)
-		rtp_state->alt_rtp_tx_ssrc = rand();
-
-	if (!rtp_end->output_enabled) {
-		rtpconn_rate_ctr_add(conn_dst, endp, RTP_DROPPED_PACKETS_CTR, 1);
-		LOGPENDP(endp, DRTP, LOGL_DEBUG,
-			 "output disabled, drop to %s %s "
-			 "rtp_port:%u rtcp_port:%u\n",
-			 dest_name,
-			 osmo_sockaddr_ntop(&rtp_end->addr.u.sa, ipbuf),
-			 ntohs(rtp_end->rtp_port), ntohs(rtp_end->rtcp_port)
-			);
-		return 0;
-	}
-
-	/* Specs say, in IuUP, the RTP seqnum and timestamp should actually be
-	 * ignored by the receiver, but still it's useful for debug purposes
-	 * to set it. Moreover, it seems ip.access nano3g produces much worse
-	 * audio output on the air side if timestamp is not set properly. */
-	hdr->timestamp = osmo_htonl(mgcp_get_current_ts(rtp_end->codec->rate));
-	hdr->sequence = osmo_htons(rtp_state->alt_rtp_tx_sequence);
-	hdr->ssrc = rtp_state->alt_rtp_tx_ssrc;
-
-	LOGPENDP(endp, DRTP, LOGL_DEBUG,
-		 "process/send IuUP to %s %s rtp_port:%u rtcp_port:%u\n",
-		 dest_name, osmo_sockaddr_ntop(&rtp_end->addr.u.sa, ipbuf),
-		 ntohs(rtp_end->rtp_port), ntohs(rtp_end->rtcp_port));
-
-	/* Forward a copy of the RTP data to a debug ip/port */
-	forward_data_tap(rtp_end->rtp.fd, &conn_src->tap_out,
-		     msg);
-
-	len = mgcp_udp_send(rtp_end->rtp.fd, &rtp_end->addr, rtp_end->rtp_port,
-			    (char *)hdr, buflen);
-
-	if (len <= 0)
-		return len;
-
-	rtpconn_rate_ctr_add(conn_dst, endp, RTP_PACKETS_TX_CTR, 1);
-	rtpconn_rate_ctr_add(conn_dst, endp, RTP_OCTETS_TX_CTR, len);
-	rtp_state->alt_rtp_tx_sequence++;
-
-	return len;
-}
-
-/* Received TNL primitive from IuUP layer FSM, transmit it further down to the
- * socket towards destination peer. */
-static int _conn_iuup_transport_prim_cb(struct osmo_prim_hdr *oph, void *ctx)
-{
-	struct mgcp_conn_rtp *conn_rtp_dst = ctx;
-	struct mgcp_conn *conn_dst = conn_rtp_dst->conn;
-	struct osmo_iuup_tnl_prim *itp = (struct osmo_iuup_tnl_prim *)oph;
-	struct mgcp_conn *conn_src;
-	struct msgb *msg;
-	struct rtp_hdr *rtph;
-
-	OSMO_ASSERT(OSMO_PRIM_HDR(&itp->oph) == OSMO_PRIM(OSMO_IUUP_TNL_UNITDATA, PRIM_OP_REQUEST));
-
-	msg = oph->msg;
-	talloc_steal(conn_rtp_dst->conn, msg);
-
-	msgb_pull_to_l2(msg);
-	rtph = (struct rtp_hdr *)msgb_push(msg, sizeof(*rtph));
-	/* TODO: fill rtph properly: */
-	*rtph = (struct rtp_hdr){
-		.csrc_count = 0,
-		.extension = 0,
-		.padding = 0,
-		.version = 2,
-		.payload_type = conn_rtp_dst->end.codec->payload_type,
-		.marker = 0,
-		.sequence = 0,
-		.timestamp = 0,
-		.ssrc = 0
-	};
-
-	/* The destination of the destination conn is the source conn, right? */
-	conn_src = _find_dst_conn(conn_dst);
-	if (!conn_src) {
-		LOG_CONN_RTP(conn_rtp_dst, LOGL_NOTICE,
-			     "Couldn't find source conn for IuUP dst conn\n");
-		/* If there's no sister connection we are either still
-		 * initializing (so we want to send back Init (ACK)), or we are
-		 * probably in loopback mode anyway, so use dst as src. */
-		conn_src = conn_dst;
-	}
-
-	return mgcp_send_iuup(conn_dst->endp, msg, &conn_src->u.rtp, conn_rtp_dst);
-}
-
-/* Used to upgrade a regular RTP connection (MGCP_RTP_DEFAULT) to become a IuUP
- * connection (MGCP_RTP_IUUP) */
-int mgcp_conn_iuup_init(struct mgcp_conn_rtp *conn_rtp)
-{
-	conn_rtp->type = MGCP_RTP_IUUP;
-	conn_rtp->iuup.iui = osmo_iuup_instance_alloc(conn_rtp->conn, conn_rtp->conn->id);
-	OSMO_ASSERT(conn_rtp->iuup.iui);
-	osmo_iuup_instance_set_user_prim_cb(conn_rtp->iuup.iui, _conn_iuup_user_prim_cb, conn_rtp);
-	osmo_iuup_instance_set_transport_prim_cb(conn_rtp->iuup.iui, _conn_iuup_transport_prim_cb, conn_rtp);
-	conn_rtp->iuup.rfci_id_no_data = -1;
-	return 0;
-}
-
-/* Cleanup specific IuUP connection (MGCP_RTP_IUUP) state, allocated by mgcp_conn_iuup_init() */
-void mgcp_conn_iuup_cleanup(struct mgcp_conn_rtp *conn_rtp)
-{
-	osmo_iuup_instance_free(conn_rtp->iuup.iui);
-	conn_rtp->iuup.iui = NULL;
-}
-
-/* Received RTP+IuUP pkt from socket of conn_rtp_src, build a TNL primitive to
- * push it further up the stack to the IuUP layer FSM to handle and/or bridge it */
-int mgcp_conn_iuup_dispatch_rtp(struct msgb *msg)
-{
-	struct osmo_rtp_msg_ctx *mc = OSMO_RTP_MSG_CTX(msg);
-	struct mgcp_conn_rtp *conn_rtp_src = mc->conn_src;
-	int rc = 0;
-	bool force_output_enabled = false;
-	bool prev_output_enabled;
-	struct osmo_sockaddr prev_rem_addr;
-	uint16_t prev_rem_rtp_port;
-
-	OSMO_ASSERT(mgcp_conn_rtp_is_iuup(conn_rtp_src));
-
-	if ((rc = check_rtp_iuup(conn_rtp_src, msg)) < 0)
-		goto free_ret;
-
-	if (!conn_rtp_src->iuup.configured) {
-		/* We received the first message without sending any, the peer is the active side (RNC). */
-		rc = _conn_iuup_configure_as_passive(conn_rtp_src);
-		if (rc < 0)
-			goto free_ret;
-		/* We need to force allowance of RTP containing Init-ACK back: */
-		prev_output_enabled = conn_rtp_src->end.output_enabled;
-		conn_rtp_src->end.output_enabled = true;
-		force_output_enabled = true;
-		/* Fill in the peer address so that we can send Init-ACK back: */
-		prev_rem_addr = conn_rtp_src->end.addr;
-		prev_rem_rtp_port = conn_rtp_src->end.rtp_port;
-		conn_rtp_src->end.addr = *mc->from_addr;
-		conn_rtp_src->end.rtp_port = htons(osmo_sockaddr_port(&mc->from_addr->u.sa));
-	}
-
-	rc = _conn_iuup_rtp_pl_up(conn_rtp_src, msg);
-
-	if (force_output_enabled) {
-		conn_rtp_src->end.output_enabled = prev_output_enabled;
-		conn_rtp_src->end.addr = prev_rem_addr;
-		conn_rtp_src->end.rtp_port = prev_rem_rtp_port;
-	}
-
-	return rc;
-free_ret:
-	msgb_free(msg);
-	return rc;
-}
-
-/* Build IuUP RNL Data primitive from msg containing an incoming RTP pkt from
- * peer and send it down the IuUP layer towards the destination as IuUP/RTP: */
-int mgcp_conn_iuup_send_rtp(struct mgcp_conn_rtp *conn_src_rtp, struct mgcp_conn_rtp *conn_dest_rtp, struct msgb *msg)
-{
-	struct osmo_iuup_rnl_prim *irp;
-	struct rtp_hdr *rtph;
-	int rc = -1;
-	int iuup_length = 0;
-	int8_t rfci;
-
-	/* Tx RNL-DATA.req */
-	rtph = (struct rtp_hdr *)msgb_data(msg);
-	msgb_pull(msg, sizeof(*rtph));
-
-	/* FIXME: validate amr packets */
-	irp = osmo_iuup_rnl_prim_alloc(conn_dest_rtp->conn, OSMO_IUUP_RNL_DATA, PRIM_OP_REQUEST, MGW_IUUP_MSGB_SIZE);
-	irp->u.data.frame_nr = htons(rtph->sequence) % 16;
-
-	/* TODO: CMR handling & multiple frames handling */
-
-	if (strcmp(conn_src_rtp->end.codec->subtype_name, "AMR") != 0) {
-		LOG_CONN_RTP(conn_src_rtp, LOGL_ERROR,
-			     "Bridge RTP=>IuUP: Bridging src codec %s to IuUP AMR not supported\n",
-			     conn_src_rtp->end.codec->subtype_name);
-		goto free_ret;
-	}
-	if (mgcp_codec_amr_is_octet_aligned(conn_src_rtp->end.codec)) {
-		struct amr_hdr *amr_hdr = (struct amr_hdr *) msgb_data(msg);
-		if (msgb_length(msg) < (sizeof(*amr_hdr))) {
-			LOG_CONN_RTP(conn_src_rtp, LOGL_NOTICE,
-				     "Bridge RTP=>IuUP: too short for AMR OA hdr (%u)\n", msgb_length(msg));
-			goto free_ret;
-		}
-		if (amr_hdr->ft >= AMR_FT_MAX) {
-			LOG_CONN_RTP(conn_src_rtp, LOGL_NOTICE, "Bridge RTP=>IuUP: wrong AMR OA ft=%u\n", amr_hdr->ft);
-			goto free_ret;
-		}
-		if ((rfci =  _conn_iuup_amr_ft_2_rfci(conn_dest_rtp, amr_hdr->ft)) < 0) {
-			LOG_CONN_RTP(conn_dest_rtp, LOGL_NOTICE, "Bridge RTP=>IuUP: No RFCI found for AMR OA ft=%u\n", amr_hdr->ft);
-			goto free_ret;
-		}
-		irp->u.data.fqc = amr_hdr->q;
-		irp->u.data.rfci = rfci;
-		msgb_pull(msg, 2);
-	} else {
-		uint8_t *amr_bwe_hdr = (uint8_t *) msgb_data(msg);
-		int8_t ft;
-		if (msgb_length(msg) < 2) {
-			LOG_CONN_RTP(conn_src_rtp, LOGL_NOTICE,
-				     "Bridge RTP=>IuUP: too short for AMR BE hdr (%u)\n", msgb_length(msg));
-			goto free_ret;
-		}
-		ft = ((amr_bwe_hdr[0] & 0x07) << 1) | ((amr_bwe_hdr[1] & 0x80) >> 7);
-		if (ft >= AMR_FT_MAX) {
-			LOG_CONN_RTP(conn_src_rtp, LOGL_NOTICE, "Bridge RTP=>IuUP: wrong AMR BE ft=%u\n", ft);
-			goto free_ret;
-		}
-		if ((rfci =  _conn_iuup_amr_ft_2_rfci(conn_dest_rtp, ft)) < 0) {
-			LOG_CONN_RTP(conn_dest_rtp, LOGL_NOTICE, "Bridge RTP=>IuUP: No RFCI found for AMR BE ft=%u\n", ft);
-			goto free_ret;
-		}
-		irp->u.data.fqc = ((amr_bwe_hdr[1] & 0x40) >> 6);
-		irp->u.data.rfci = rfci;
-		rc = iuup_length = osmo_amr_bwe_to_iuup(msgb_data(msg), msgb_length(msg));
-		if (rc < 0) {
-			LOG_CONN_RTP(conn_dest_rtp, LOGL_ERROR, "Bridge RTP=>IuUP: Failed convert the RTP/AMR to IuUP payload\n");
-			return rc;
-		}
-		msgb_trim(msg, iuup_length);
-	}
-
-	irp->oph.msg->l3h = msgb_put(irp->oph.msg, msgb_length(msg));
-	memcpy(irp->oph.msg->l3h, msgb_data(msg), msgb_length(msg));
-	if ((rc = osmo_iuup_rnl_prim_down(conn_dest_rtp->iuup.iui, irp)) != 0)
-		LOG_CONN_RTP(conn_dest_rtp, LOGL_ERROR, "Bridge RTP=>IuUP: Failed Tx RTP payload down the IuUP layer\n");
-	return rc;
-
-free_ret:
-	msgb_free(irp->oph.msg);
-	return -1;
-}
-
-/* Build IuUP RNL Data primitive from msg containing dummy content and send it
- * down the IuUP layer towards the destination as IuUP/RTP: */
-int mgcp_conn_iuup_send_dummy(struct mgcp_conn_rtp *conn_rtp)
-{
-	struct osmo_iuup_rnl_prim *irp;
-	int rc;
-
-	if (conn_rtp->iuup.rfci_id_no_data == -1) {
-		LOG_CONN_RTP(conn_rtp, LOGL_NOTICE, "No RFCI NO_DATA found, unable to send dummy packet\n");
-		return -ENOTSUP;
-	}
-
-	irp = osmo_iuup_rnl_prim_alloc(conn_rtp->conn, OSMO_IUUP_RNL_DATA, PRIM_OP_REQUEST, MGW_IUUP_MSGB_SIZE);
-	irp->u.data.frame_nr = 0;
-	irp->u.data.fqc = IUUP_FQC_FRAME_GOOD;
-	irp->u.data.rfci = conn_rtp->iuup.rfci_id_no_data;
-	irp->oph.msg->l3h = irp->oph.msg->tail;
-	if ((rc = osmo_iuup_rnl_prim_down(conn_rtp->iuup.iui, irp)) != 0) {
-		LOG_CONN_RTP(conn_rtp, LOGL_ERROR, "Failed Tx RTP dummy payload down the IuUP layer\n");
-		return -EINVAL;
-	}
-
-	return 0;
-}
--- a/src/libosmo-mgcp/mgcp_msg.c
+++ b/src/libosmo-mgcp/mgcp_msg.c
@@ -31,7 +31,6 @@
 #include <osmocom/mgcp/mgcp_msg.h>
 #include <osmocom/mgcp/mgcp_conn.h>
 #include <osmocom/mgcp/mgcp_endp.h>
-#include <osmocom/mgcp/mgcp_trunk.h>

 /*! Display an mgcp message on the log output.
 *  \param[in] message mgcp message string
@@ -110,7 +109,8 @@ int mgcp_parse_conn_mode(const char *mode, struct mgcp_endpoint *endp,

 	/* Special handling for RTP connections */
 	if (conn->type == MGCP_CONN_TYPE_RTP) {
-		conn->u.rtp.end.output_enabled = !!(conn->mode & MGCP_CONN_SEND_ONLY);
+		conn->u.rtp.end.output_enabled =
+		    conn->mode & MGCP_CONN_SEND_ONLY ? 1 : 0;
 	}

 	LOGPENDP(endp, DLMGCP, LOGL_DEBUG, "conn:%s\n", mgcp_conn_dump(conn));
@@ -120,7 +120,7 @@ int mgcp_parse_conn_mode(const char *mode, struct mgcp_endpoint *endp,

 	/* Special handling für RTP connections */
 	if (conn->type == MGCP_CONN_TYPE_RTP) {
-		LOGPCONN(conn, DLMGCP, LOGL_DEBUG, "output_enabled %u\n",
+		LOGPCONN(conn, DLMGCP, LOGL_DEBUG, "output_enabled %d\n",
 			 conn->u.rtp.end.output_enabled);
 	}

@@ -132,19 +132,24 @@ int mgcp_parse_conn_mode(const char *mode, struct mgcp_endpoint *endp,
 }

 /*! Analyze and parse the the hader of an MGCP messeage string.
- *  \param[out] pdata caller provided memory to store the parsing results.
- *  \param[in] data mgcp message string.
- *  \returns 0 when the status line was complete and parseable, negative (MGCP
- *  cause code) on error. */
+ *  \param[out] pdata caller provided memory to store the parsing results
+ *  \param[in] data mgcp message string
+ *  \returns when the status line was complete and transaction_id and
+ *  endp out parameters are set, -1 on error */
 int mgcp_parse_header(struct mgcp_parse_data *pdata, char *data)
 {
 	int i = 0;
 	char *elem, *save = NULL;
+	int cause;

 	/*! This function will parse the header part of the received
-	 *  MGCP message. The parsing results are stored in pdata. */
+	 *  MGCP message. The parsing results are stored in pdata.
+	 *  The function will also automatically search the pool with
+	 *  available endpoints in order to find an endpoint that matches
+	 *  the endpoint string in in the header */

 	OSMO_ASSERT(data);
+	pdata->trans = "000000";

 	for (elem = strtok_r(data, " ", &save); elem;
 	     elem = strtok_r(NULL, " ", &save)) {
@@ -153,7 +158,13 @@ int mgcp_parse_header(struct mgcp_parse_data *pdata, char *data)
 			pdata->trans = elem;
 			break;
 		case 1:
-			pdata->epname = elem;
+			pdata->endp = mgcp_endp_by_name(&cause, elem, pdata->cfg);
+			if (!pdata->endp) {
+				LOGP(DLMGCP, LOGL_ERROR,
+				     "Unable to find Endpoint `%s'\n", elem);
+				OSMO_ASSERT(cause < 0);
+				return cause;
+			}
 			break;
 		case 2:
 			if (strcasecmp("MGCP", elem)) {
@@ -163,8 +174,11 @@ int mgcp_parse_header(struct mgcp_parse_data *pdata, char *data)
 			}
 			break;
 		case 3:
-			if (strcmp("1.0", elem))
+			if (strcmp("1.0", elem)) {
+				LOGP(DLMGCP, LOGL_ERROR, "MGCP version `%s' "
+				     "not supported\n", elem);
 				return -528;
+			}
 			break;
 		}
 		i++;
@@ -172,6 +186,8 @@ int mgcp_parse_header(struct mgcp_parse_data *pdata, char *data)

 	if (i != 4) {
 		LOGP(DLMGCP, LOGL_ERROR, "MGCP status line too short.\n");
+		pdata->trans = "000000";
+		pdata->endp = NULL;
 		return -510;
 	}

@@ -208,24 +224,22 @@ int mgcp_parse_osmux_cid(const char *line)
 }

 /*! Check MGCP parameter line (string) for plausibility.
- *  \param[in] endp pointer to endpoint (only used for log output, may be NULL)
- *  \param[in] trunk pointer to trunk (only used for log output, may be NULL if endp is not NULL)
+ *  \param[in] endp pointer to endpoint (only used for log output)
 *  \param[in] line single parameter line from the MGCP message
- *  \returns true when line seems plausible, false on error */
-bool mgcp_check_param(const struct mgcp_endpoint *endp, struct mgcp_trunk *trunk, const char *line)
+ *  \returns 1 when line seems plausible, 0 on error */
+int mgcp_check_param(const struct mgcp_endpoint *endp, const char *line)
 {
 	const size_t line_len = strlen(line);
 	if (line[0] != '\0' && line_len < 2) {
-		if (endp)
-			LOGPENDP(endp, DLMGCP, LOGL_NOTICE, "wrong MGCP option format: '%s'\n", line);
-		else
-			LOGPTRUNK(trunk, DLMGCP, LOGL_NOTICE, "wrong MGCP option format: '%s'\n", line);
-		return false;
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "Wrong MGCP option format: '%s' on %s\n",
+		     line, endp->name);
+		return 0;
 	}

 	/* FIXME: A couple more checks wouldn't hurt... */

-	return true;
+	return 1;
 }

 /*! Check if the specified callid seems plausible.
--- a/src/libosmo-mgcp/mgcp_network.c
+++ b/src/libosmo-mgcp/mgcp_network.c
--- a/src/libosmo-mgcp/mgcp_osmux.c
+++ b/src/libosmo-mgcp/mgcp_osmux.c
@@ -116,7 +116,7 @@ static struct osmux_handle *
 osmux_handle_alloc(struct mgcp_conn_rtp *conn, struct in_addr *addr, int rem_port)
 {
 	struct osmux_handle *h;
-	struct mgcp_config *cfg = conn->conn->endp->trunk->cfg;
+	struct mgcp_config *cfg = conn->conn->endp->cfg;

 	h = talloc_zero(osmux, struct osmux_handle);
 	if (!h)
@@ -375,7 +375,7 @@ static int osmux_read_fd_cb(struct osmo_fd *ofd, unsigned int what)
 	}

 	/* not any further processing dummy messages */
-	if (mgcp_is_rtp_dummy_payload(msg))
+	if (msg->data[0] == MGCP_DUMMY_LOAD)
 		return osmux_handle_dummy(cfg, &addr, msg);

 	rem = msg->len;
@@ -418,13 +418,13 @@ int osmux_init(int role, struct mgcp_config *cfg)

 	osmo_fd_setup(&osmux_fd, -1, OSMO_FD_READ, osmux_read_fd_cb, cfg, 0);

-	ret = mgcp_create_bind(cfg->osmux_addr, &osmux_fd, cfg->osmux_port,
-				cfg->endp_dscp, cfg->endp_priority);
+	ret = mgcp_create_bind(cfg->osmux_addr, &osmux_fd, cfg->osmux_port);
 	if (ret < 0) {
 		LOGP(DLMGCP, LOGL_ERROR, "cannot bind OSMUX socket to %s:%u\n",
 		     cfg->osmux_addr, cfg->osmux_port);
 		return ret;
 	}
+	mgcp_set_ip_tos(osmux_fd.fd, cfg->endp_dscp);

 	ret = osmo_fd_register(&osmux_fd);
 	if (ret < 0) {
@@ -460,7 +460,7 @@ int osmux_enable_conn(struct mgcp_endpoint *endp, struct mgcp_conn_rtp *conn,
 	 */
 	struct in6_addr addr_unset = {};
 	static const uint32_t rtp_ssrc_winlen = UINT32_MAX / (OSMUX_CID_MAX + 1);
-	uint16_t osmux_dummy = endp->trunk->cfg->osmux_dummy;
+	uint16_t osmux_dummy = endp->cfg->osmux_dummy;

 	/* Check if osmux is enabled for the specified connection */
 	if (conn->osmux.state != OSMUX_STATE_ACTIVATING) {
--- a/src/libosmo-mgcp/mgcp_protocol.c
+++ b/src/libosmo-mgcp/mgcp_protocol.c
--- a/src/libosmo-mgcp/mgcp_ratectr.c
+++ b/src/libosmo-mgcp/mgcp_ratectr.c
@@ -22,14 +22,9 @@
 *
 */

-#include <stdatomic.h>
 #include <errno.h>
 #include <osmocom/core/stats.h>
-#include <osmocom/core/stat_item.h>
 #include <osmocom/mgcp/mgcp_conn.h>
-#include <osmocom/mgcp/mgcp_trunk.h>
-#include <osmocom/mgcp/mgcp_protocol.h>
-#include <osmocom/mgcp/mgcp_endp.h>
 #include <osmocom/mgcp/mgcp_ratectr.h>

 static const struct rate_ctr_desc mgcp_general_ctr_desc[] = {
@@ -63,6 +58,7 @@ static const struct rate_ctr_desc mgcp_crcx_ctr_desc[] = {
 	[MGCP_CRCX_FAIL_NO_REMOTE_CONN_DESC] =
 	    { "crcx:no_remote_conn_desc", "no opposite end specified for connection." },
 	[MGCP_CRCX_FAIL_START_RTP] = { "crcx:start_rtp_failure", "failure to start RTP processing." },
+	[MGCP_CRCX_FAIL_REJECTED_BY_POLICY] = { "crcx:conn_rejected", "connection rejected by policy." },
 	[MGCP_CRCX_FAIL_NO_OSMUX] = { "crcx:no_osmux", "no osmux offered by peer." },
 	[MGCP_CRCX_FAIL_INVALID_CONN_OPTIONS] = { "crcx:conn_opt", "connection options invalid." },
 	[MGCP_CRCX_FAIL_CODEC_NEGOTIATION] = { "crcx:codec_nego", "codec negotiation failure." },
@@ -94,6 +90,8 @@ static const struct rate_ctr_desc mgcp_mdcx_ctr_desc[] = {
 	[MGCP_MDCX_FAIL_NO_REMOTE_CONN_DESC] =
 	    { "mdcx:no_remote_conn_desc", "no opposite end specified for connection." },
 	[MGCP_MDCX_FAIL_START_RTP] = { "mdcx:start_rtp_failure", "failure to start RTP processing." },
+	[MGCP_MDCX_FAIL_REJECTED_BY_POLICY] = { "mdcx:conn_rejected", "connection rejected by policy." },
+	[MGCP_MDCX_DEFERRED_BY_POLICY] = { "mdcx:conn_deferred", "connection deferred by policy." },
 	[MGCP_MDCX_FAIL_AVAIL] = { "mdcx:unavailable", "endpoint unavailable." },
 };

@@ -107,12 +105,15 @@ const static struct rate_ctr_group_desc mgcp_mdcx_ctr_group_desc = {

 static const struct rate_ctr_desc mgcp_dlcx_ctr_desc[] = {
 	[MGCP_DLCX_SUCCESS] = { "dlcx:success", "DLCX command processed successfully." },
+	[MGCP_DLCX_FAIL_WILDCARD] = { "dlcx:wildcard", "wildcard names in DLCX commands are unsupported." },
 	[MGCP_DLCX_FAIL_NO_CONN] = { "dlcx:no_conn", "endpoint specified in DLCX command has no active connections." },
 	[MGCP_DLCX_FAIL_INVALID_CALLID] =
 	    { "dlcx:callid", "CallId specified in DLCX command mismatches endpoint's CallId ." },
 	[MGCP_DLCX_FAIL_INVALID_CONNID] =
 	    { "dlcx:connid", "connection ID specified in DLCX command does not exist on endpoint." },
 	[MGCP_DLCX_FAIL_UNHANDLED_PARAM] = { "dlcx:unhandled_param", "unhandled parameter in DLCX command." },
+	[MGCP_DLCX_FAIL_REJECTED_BY_POLICY] = { "dlcx:rejected", "connection deletion rejected by policy." },
+	[MGCP_DLCX_DEFERRED_BY_POLICY] = { "dlcx:deferred", "connection deletion deferred by policy." },
 	[MGCP_DLCX_FAIL_AVAIL] = { "dlcx:unavailable", "endpoint unavailable." },
 };

@@ -125,9 +126,9 @@ const static struct rate_ctr_group_desc mgcp_dlcx_ctr_group_desc = {
 };

 static const struct rate_ctr_desc e1_rate_ctr_desc[] = {
-	[E1_I460_TRAU_RX_FAIL_CTR] = { "e1:rx_fail", "Inbound I.460 TRAU failures." },
-	[E1_I460_TRAU_TX_FAIL_CTR] = { "e1:tx_fail", "Outbound I.460 TRAU failures." },
-	[E1_I460_TRAU_MUX_EMPTY_CTR] = { "e1:i460", "Outbound I.460 MUX queue empty." }
+	[E1_I460_TRAU_RX_FAIL_CTR] = {"e1:rx_fail", "Inbound I.460 TRAU failures."},
+	[E1_I460_TRAU_TX_FAIL_CTR] = {"e1:tx_fail", "Outbound I.460 TRAU failures."},
+	[E1_I460_TRAU_MUX_EMPTY_CTR] = {"e1:i460", "Outbound I.460 MUX queue empty."}
 };

 const static struct rate_ctr_group_desc e1_rate_ctr_group_desc = {
@@ -146,180 +147,83 @@ const static struct rate_ctr_group_desc all_rtp_conn_rate_ctr_group_desc = {
 	.ctr_desc = all_rtp_conn_rate_ctr_desc
 };

-/*! allocate global rate counters
- *  (called once at startup).
- *  \param[in] cfg mgw configuration for which the rate counters are allocated.
- *  \returns 0 on success, -EINVAL on failure. */
-int mgcp_ratectr_global_alloc(struct mgcp_config *cfg)
+static int free_rate_counter_group(struct rate_ctr_group *rate_ctr_group)
 {
-	struct mgcp_ratectr_global *ratectr = &cfg->ratectr;
-	static atomic_uint general_rate_ctr_index = 0;
-	char ctr_name[512];
+	rate_ctr_group_free(rate_ctr_group);
+	return 0;
+}
+
+/*! allocate global rate counters into a given rate counter struct
+ *  (called once at startup)
+ *  \param[in] ctx talloc context.
+ *  \param[out] ratectr struct that holds the counters
+ *  \returns 0 on success, -EINVAL on failure */
+int mgcp_ratectr_global_alloc(void *ctx, struct mgcp_ratectr_global *ratectr)
+{
+	/* FIXME: Each new rate counter group requires a unique index. At the
+	 * moment we generate an index using a counter, but perhaps there is
+	 * a better way of assigning indices? */
+	static unsigned int general_rate_ctr_index = 0;

 	if (ratectr->mgcp_general_ctr_group == NULL) {
 		ratectr->mgcp_general_ctr_group =
-		    rate_ctr_group_alloc(cfg, &mgcp_general_ctr_group_desc, general_rate_ctr_index++);
+		    rate_ctr_group_alloc(ctx, &mgcp_general_ctr_group_desc, general_rate_ctr_index);
 		if (!ratectr->mgcp_general_ctr_group)
 			return -EINVAL;
-		snprintf(ctr_name, sizeof(ctr_name), "%s:general", cfg->domain);
-		rate_ctr_group_set_name(ratectr->mgcp_general_ctr_group, ctr_name);
+		talloc_set_destructor(ratectr->mgcp_general_ctr_group, free_rate_counter_group);
+		general_rate_ctr_index++;
 	}
 	return 0;
 }

-/*! free global rate counters
- *  (called once at process shutdown).
- *  \param[in] cfg mgw configuration for which the rate counters are allocated. */
-void mgcp_ratectr_global_free(struct mgcp_config *cfg)
-{
-	struct mgcp_ratectr_global *ratectr = &cfg->ratectr;
-
-	if (ratectr->mgcp_general_ctr_group) {
-		rate_ctr_group_free(ratectr->mgcp_general_ctr_group);
-		ratectr->mgcp_general_ctr_group = NULL;
-	}
-}
-
-/*! allocate trunk specific rate counters
- *  (called once on trunk initialization).
- *  \param[in] trunk mgw trunk for which the rate counters are allocated.
+/*! allocate trunk specific rate counters into a given rate counter struct
+ *  (called once on trunk initialization)
+ *  \param[in] ctx talloc context.
+ *  \param[out] ratectr struct that holds the counters
 *  \returns 0 on success, -EINVAL on failure */
-int mgcp_ratectr_trunk_alloc(struct mgcp_trunk *trunk)
+int mgcp_ratectr_trunk_alloc(void *ctx, struct mgcp_ratectr_trunk *ratectr)
 {
-	struct mgcp_ratectr_trunk *ratectr = &trunk->ratectr;
-	static atomic_uint crcx_rate_ctr_index = 0;
-	static atomic_uint mdcx_rate_ctr_index = 0;
-	static atomic_uint dlcx_rate_ctr_index = 0;
-	static atomic_uint all_rtp_conn_rate_ctr_index = 0;
-	char ctr_name[256];
+	/* FIXME: see comment in mgcp_ratectr_global_alloc()  */
+	static unsigned int crcx_rate_ctr_index = 0;
+	static unsigned int mdcx_rate_ctr_index = 0;
+	static unsigned int dlcx_rate_ctr_index = 0;
+	static unsigned int all_rtp_conn_rate_ctr_index = 0;

 	if (ratectr->mgcp_crcx_ctr_group == NULL) {
-		ratectr->mgcp_crcx_ctr_group =
-		    rate_ctr_group_alloc(trunk, &mgcp_crcx_ctr_group_desc, crcx_rate_ctr_index++);
+		ratectr->mgcp_crcx_ctr_group = rate_ctr_group_alloc(ctx, &mgcp_crcx_ctr_group_desc, crcx_rate_ctr_index);
 		if (!ratectr->mgcp_crcx_ctr_group)
 			return -EINVAL;
-		snprintf(ctr_name, sizeof(ctr_name), "%s-%u:crcx", mgcp_trunk_type_strs_str(trunk->trunk_type),
-			 trunk->trunk_nr);
-		rate_ctr_group_set_name(ratectr->mgcp_crcx_ctr_group, ctr_name);
+		talloc_set_destructor(ratectr->mgcp_crcx_ctr_group, free_rate_counter_group);
+		crcx_rate_ctr_index++;
 	}
 	if (ratectr->mgcp_mdcx_ctr_group == NULL) {
-		ratectr->mgcp_mdcx_ctr_group =
-		    rate_ctr_group_alloc(trunk, &mgcp_mdcx_ctr_group_desc, mdcx_rate_ctr_index++);
+		ratectr->mgcp_mdcx_ctr_group = rate_ctr_group_alloc(ctx, &mgcp_mdcx_ctr_group_desc, mdcx_rate_ctr_index);
 		if (!ratectr->mgcp_mdcx_ctr_group)
 			return -EINVAL;
-		snprintf(ctr_name, sizeof(ctr_name), "%s-%u:mdcx", mgcp_trunk_type_strs_str(trunk->trunk_type),
-			 trunk->trunk_nr);
-		rate_ctr_group_set_name(ratectr->mgcp_mdcx_ctr_group, ctr_name);
+		talloc_set_destructor(ratectr->mgcp_mdcx_ctr_group, free_rate_counter_group);
+		mdcx_rate_ctr_index++;
 	}
 	if (ratectr->mgcp_dlcx_ctr_group == NULL) {
-		ratectr->mgcp_dlcx_ctr_group =
-		    rate_ctr_group_alloc(trunk, &mgcp_dlcx_ctr_group_desc, dlcx_rate_ctr_index++);
+		ratectr->mgcp_dlcx_ctr_group = rate_ctr_group_alloc(ctx, &mgcp_dlcx_ctr_group_desc, dlcx_rate_ctr_index);
 		if (!ratectr->mgcp_dlcx_ctr_group)
 			return -EINVAL;
-		snprintf(ctr_name, sizeof(ctr_name), "%s-%u:dlcx", mgcp_trunk_type_strs_str(trunk->trunk_type),
-			 trunk->trunk_nr);
-		rate_ctr_group_set_name(ratectr->mgcp_dlcx_ctr_group, ctr_name);
+		talloc_set_destructor(ratectr->mgcp_dlcx_ctr_group, free_rate_counter_group);
+		dlcx_rate_ctr_index++;
 	}
 	if (ratectr->all_rtp_conn_stats == NULL) {
-		ratectr->all_rtp_conn_stats = rate_ctr_group_alloc(trunk, &all_rtp_conn_rate_ctr_group_desc,
-								   all_rtp_conn_rate_ctr_index++);
+		ratectr->all_rtp_conn_stats = rate_ctr_group_alloc(ctx, &all_rtp_conn_rate_ctr_group_desc,
+								 all_rtp_conn_rate_ctr_index);
 		if (!ratectr->all_rtp_conn_stats)
 			return -EINVAL;
-		snprintf(ctr_name, sizeof(ctr_name), "%s-%u:rtp_conn", mgcp_trunk_type_strs_str(trunk->trunk_type),
-			 trunk->trunk_nr);
-		rate_ctr_group_set_name(ratectr->all_rtp_conn_stats, ctr_name);
+		talloc_set_destructor(ratectr->all_rtp_conn_stats, free_rate_counter_group);
+		all_rtp_conn_rate_ctr_index++;
 	}
-
-	/* E1 specific */
-	if (trunk->trunk_type == MGCP_TRUNK_E1 && ratectr->e1_stats == NULL) {
-		ratectr->e1_stats = rate_ctr_group_alloc(trunk, &e1_rate_ctr_group_desc, mdcx_rate_ctr_index++);
+	if (ratectr->e1_stats == NULL) {
+		ratectr->e1_stats = rate_ctr_group_alloc(ctx, &e1_rate_ctr_group_desc, mdcx_rate_ctr_index);
 		if (!ratectr->e1_stats)
 			return -EINVAL;
-		snprintf(ctr_name, sizeof(ctr_name), "%s-%u:e1", mgcp_trunk_type_strs_str(trunk->trunk_type),
-			 trunk->trunk_nr);
-		rate_ctr_group_set_name(ratectr->e1_stats, ctr_name);
+		talloc_set_destructor(ratectr->e1_stats, free_rate_counter_group);
+		mdcx_rate_ctr_index++;
 	}
 	return 0;
 }
-
-/*! free trunk specific rate counters
- *  (called once when trunk is freed).
- *  \param[in] trunk mgw trunk on which the rate counters are allocated. */
-void mgcp_ratectr_trunk_free(struct mgcp_trunk *trunk)
-{
-	struct mgcp_ratectr_trunk *ratectr = &trunk->ratectr;
-
-	if (ratectr->mgcp_crcx_ctr_group) {
-		rate_ctr_group_free(ratectr->mgcp_crcx_ctr_group);
-		ratectr->mgcp_crcx_ctr_group = NULL;
-	}
-	if (ratectr->mgcp_mdcx_ctr_group) {
-		rate_ctr_group_free(ratectr->mgcp_mdcx_ctr_group);
-		ratectr->mgcp_mdcx_ctr_group = NULL;
-	}
-	if (ratectr->mgcp_dlcx_ctr_group) {
-		rate_ctr_group_free(ratectr->mgcp_dlcx_ctr_group);
-		ratectr->mgcp_dlcx_ctr_group = NULL;
-	}
-	if (ratectr->all_rtp_conn_stats) {
-		rate_ctr_group_free(ratectr->all_rtp_conn_stats);
-		ratectr->all_rtp_conn_stats = NULL;
-	}
-
-	/* E1 specific */
-	if (ratectr->e1_stats) {
-		rate_ctr_group_free(ratectr->e1_stats);
-		ratectr->e1_stats = NULL;
-	}
-}
-
-const struct osmo_stat_item_desc trunk_stat_desc[] = {
-	[TRUNK_STAT_ENDPOINTS_TOTAL] = { "endpoints:total",
-					 "Number of endpoints that exist on the trunk",
-					 "", 60, 0 },
-	[TRUNK_STAT_ENDPOINTS_USED] = { "endpoints:used",
-					"Number of endpoints in use",
-					"", 60, 0 },
-};
-
-const struct osmo_stat_item_group_desc trunk_statg_desc = {
-	.group_name_prefix = "trunk",
-	.group_description = "mgw trunk",
-	.class_id = OSMO_STATS_CLASS_GLOBAL,
-	.num_items = ARRAY_SIZE(trunk_stat_desc),
-	.item_desc = trunk_stat_desc,
-};
-
-/*! allocate trunk specific stat items
- *  (called once on trunk initialization).
- *  \param[in] trunk for which the stat items are allocated.
- *  \returns 0 on success, -EINVAL on failure. */
-int mgcp_stat_trunk_alloc(struct mgcp_trunk *trunk)
-{
-	struct mgcp_stat_trunk *stats = &trunk->stats;
-	static unsigned int common_stat_index = 0;
-	char stat_name[256];
-
-	stats->common = osmo_stat_item_group_alloc(trunk, &trunk_statg_desc, common_stat_index);
-	if (!stats->common)
-		return -EINVAL;
-	snprintf(stat_name, sizeof(stat_name), "%s-%u:common", mgcp_trunk_type_strs_str(trunk->trunk_type),
-		 trunk->trunk_nr);
-	osmo_stat_item_group_set_name(stats->common, stat_name);
-	common_stat_index++;
-
-	return 0;
-}
-
-/*! free trunk specific stat items
- *  (called once when trunk is freed).
- *  \param[in] trunk on which the stat items are allocated. */
-void mgcp_stat_trunk_free(struct mgcp_trunk *trunk)
-{
-	struct mgcp_stat_trunk *stats = &trunk->stats;
-
-	if (stats->common) {
-		osmo_stat_item_group_free(stats->common);
-		stats->common = NULL;
-	}
-}
--- a/src/libosmo-mgcp/mgcp_sdp.c
+++ b/src/libosmo-mgcp/mgcp_sdp.c
@@ -98,7 +98,7 @@ static void codecs_initialize(void *ctx, struct sdp_rtp_map *codecs, int used)
 /* Helper function to update codec map information with additional data from
 * SDP, called from: mgcp_parse_sdp_data() */
 static void codecs_update(void *ctx, struct sdp_rtp_map *codecs, int used,
-			  int payload_type, const char *audio_name)
+			  int payload, const char *audio_name)
 {
 	int i;

@@ -110,7 +110,7 @@ static void codecs_update(void *ctx, struct sdp_rtp_map *codecs, int used,
 		/* Note: We can only update payload codecs that already exist
 		 * in our codec list. If we get an unexpected payload type,
 		 * we just drop it */
-		if (codecs[i].payload_type != payload_type)
+		if (codecs[i].payload_type != payload)
 			continue;

 		if (sscanf(audio_name, "%63[^/]/%d/%d",
@@ -127,7 +127,7 @@ static void codecs_update(void *ctx, struct sdp_rtp_map *codecs, int used,
 		return;
 	}

-	LOGP(DLMGCP, LOGL_ERROR, "Unconfigured PT(%d) with %s\n", payload_type,
+	LOGP(DLMGCP, LOGL_ERROR, "Unconfigured PT(%d) with %s\n", payload,
 	     audio_name);
 }

@@ -334,7 +334,7 @@ int mgcp_parse_sdp_data(const struct mgcp_endpoint *endp,
 	void *tmp_ctx = talloc_new(NULL);
 	struct mgcp_rtp_end *rtp;

-	int payload_type;
+	int payload;
 	int ptime, ptime2 = 0;
 	char audio_name[64];
 	int port, rc;
@@ -355,8 +355,8 @@ int mgcp_parse_sdp_data(const struct mgcp_endpoint *endp,
 			/* skip these SDP attributes */
 			break;
 		case 'a':
-			if (sscanf(line, "a=rtpmap:%d %63s", &payload_type, audio_name) == 2) {
-				codecs_update(tmp_ctx, codecs, codecs_used, payload_type, audio_name);
+			if (sscanf(line, "a=rtpmap:%d %63s", &payload, audio_name) == 2) {
+				codecs_update(tmp_ctx, codecs, codecs_used, payload, audio_name);
 				break;
 			}

@@ -394,13 +394,11 @@ int mgcp_parse_sdp_data(const struct mgcp_endpoint *endp,
 				codecs_used = rc;
 			break;
 		case 'c':
-			if (audio_ip_from_sdp(&rtp->addr, line) < 0) {
-				talloc_free(tmp_ctx);
+			if (audio_ip_from_sdp(&rtp->addr, line) < 0)
 				return -1;
-			}
 			break;
 		default:
-			if (endp)
+			if (p->endp)
 				/* TODO: Check spec: We used the bare endpoint number before,
 				 * now we use the endpoint name as a whole? Is this allowed? */
 				LOGP(DLMGCP, LOGL_NOTICE,
@@ -439,7 +437,7 @@ int mgcp_parse_sdp_data(const struct mgcp_endpoint *endp,
 	for (i = 0; i < codecs_used; i++) {
 		LOGPC(DLMGCP, LOGL_NOTICE, "%d=%s",
 		      rtp->codecs[i].payload_type,
-		      strlen(rtp->codecs[i].subtype_name) ? rtp->codecs[i].subtype_name : "unknown");
+		      rtp->codecs[i].subtype_name ? rtp-> codecs[i].subtype_name : "unknown");
 		LOGPC(DLMGCP, LOGL_NOTICE, " ");
 	}
 	LOGPC(DLMGCP, LOGL_NOTICE, "\n");
@@ -576,7 +574,7 @@ int mgcp_write_response_sdp(const struct mgcp_endpoint *endp,
 	OSMO_ASSERT(addr);

 	/* FIXME: constify endp and conn args in get_net_donwlink_format_cb() */
-	endp->trunk->cfg->get_net_downlink_format_cb((struct mgcp_endpoint *)endp,
+	endp->cfg->get_net_downlink_format_cb((struct mgcp_endpoint *)endp,
 					      &codec, &fmtp_extra,
 					      (struct mgcp_conn_rtp *)conn);

@@ -601,7 +599,7 @@ int mgcp_write_response_sdp(const struct mgcp_endpoint *endp,

 		payload_types[0] = payload_type;
 		if (mgcp_conn_rtp_is_osmux(conn))
-			local_port = endp->trunk->cfg->osmux_port;
+			local_port = endp->cfg->osmux_port;
 		else
 			local_port = conn->end.local_port;
 		rc = add_audio(sdp, payload_types, 1, local_port);
--- a/src/libosmo-mgcp/mgcp_stat.c
+++ b/src/libosmo-mgcp/mgcp_stat.c
@@ -28,18 +28,12 @@
 #include <osmocom/mgcp/mgcp_conn.h>
 #include <osmocom/mgcp/mgcp_stat.h>
 #include <osmocom/mgcp/mgcp_endp.h>
-#include <osmocom/mgcp/mgcp_trunk.h>

 /* Helper function for mgcp_format_stats_rtp() to calculate packet loss */
-#if defined(__has_attribute)
-#if __has_attribute(no_sanitize)
-__attribute__((no_sanitize("undefined")))
-#endif
-#endif
 void calc_loss(struct mgcp_conn_rtp *conn, uint32_t *expected, int *loss)
 {
 	struct mgcp_rtp_state *state = &conn->state;
-	struct rate_ctr *packets_rx = rate_ctr_group_get_ctr(conn->rate_ctr_group, RTP_PACKETS_RX_CTR);
+	struct rate_ctr *packets_rx = &conn->rate_ctr_group->ctr[RTP_PACKETS_RX_CTR];

 	*expected = state->stats.cycles + state->stats.max_seq;
 	*expected = *expected - state->stats.base_seq + 1;
@@ -80,10 +74,10 @@ static void mgcp_format_stats_rtp(char *str, size_t str_len,
 	int ploss;
 	int nchars;

-	struct rate_ctr *packets_rx = rate_ctr_group_get_ctr(conn->rate_ctr_group, RTP_PACKETS_RX_CTR);
-	struct rate_ctr *octets_rx = rate_ctr_group_get_ctr(conn->rate_ctr_group, RTP_OCTETS_RX_CTR);
-	struct rate_ctr *packets_tx = rate_ctr_group_get_ctr(conn->rate_ctr_group, RTP_PACKETS_TX_CTR);
-	struct rate_ctr *octets_tx = rate_ctr_group_get_ctr(conn->rate_ctr_group, RTP_OCTETS_TX_CTR);
+	struct rate_ctr *packets_rx = &conn->rate_ctr_group->ctr[RTP_PACKETS_RX_CTR];
+	struct rate_ctr *octets_rx = &conn->rate_ctr_group->ctr[RTP_OCTETS_RX_CTR];
+	struct rate_ctr *packets_tx = &conn->rate_ctr_group->ctr[RTP_PACKETS_TX_CTR];
+	struct rate_ctr *octets_tx = &conn->rate_ctr_group->ctr[RTP_OCTETS_TX_CTR];

 	calc_loss(conn, &expected, &ploss);
 	jitter = calc_jitter(&conn->state);
@@ -99,7 +93,7 @@ static void mgcp_format_stats_rtp(char *str, size_t str_len,
 	str += nchars;
 	str_len -= nchars;

-	if (conn->conn->endp->trunk->cfg->osmux != OSMUX_USAGE_OFF) {
+	if (conn->conn->endp->cfg->osmux != OSMUX_USAGE_OFF) {
 		/* Error Counter */
 		nchars = snprintf(str, str_len,
 				  "\r\nX-Osmo-CP: EC TI=%" PRIu64 ", TO=%" PRIu64,
--- a/src/libosmo-mgcp/mgcp_threads_queue.c
+++ b/src/libosmo-mgcp/mgcp_threads_queue.c
@@ -1,207 +0,0 @@
-/*
- * (C) 2021 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
- * All Rights Reserved
- *
- * Author: Eric Wild
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-#include <inttypes.h>
-#include <stdatomic.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/eventfd.h>
-#include <sys/types.h>
-#include <unistd.h>
-#include <talloc.h>
-
-#include <osmocom/mgcp/mgcp_threads_queue.h>
-
-/*
-classic lamport circular lockfree spsc queue:
-every "side" only writes its own ptr, but may read the other sides ptr
-
-notify reader using eventfd as soon as element is added, reader then reads until
-read fails
-> reader pops in a loop until FALSE and might get spurious events because it
-read before it was notified, which is fine
-> writing pushes *the same data* in a loop until TRUE, blocks
-
-shutting this down requires
-1) to stop reading and pushing
-2) ONE side to take care of the eventfds
-*/
-
-static struct spsc *spsc_init(void *talloc_ctx, unsigned int count, unsigned int size_per_buf, bool blockr, bool blockw)
-{
-	struct spsc *q = talloc_zero_size(talloc_ctx, sizeof(struct spsc) + sizeof(uintptr_t) * count);
-	atomic_init(&q->readptr, 0);
-	atomic_init(&q->writeptr, 0);
-	q->efd_r = eventfd(0, blockr ? 0 : EFD_NONBLOCK);
-	q->efd_w = eventfd(1, blockw ? 0 : EFD_NONBLOCK);
-	q->count = count;
-	q->size_per_buf = size_per_buf;
-	q->buf = talloc_zero_size(q, size_per_buf * count);
-
-	for (int i = 0; i < count; i++)
-		q->data[i] = (uintptr_t)q->buf + i * size_per_buf;
-	return q;
-}
-
-static void spsc_deinit(struct spsc *q)
-{
-	talloc_free(q->buf);
-	close(q->efd_r);
-	close(q->efd_w);
-	talloc_free(q);
-}
-
-static ssize_t spsc_check_r(struct spsc *q)
-{
-	uint64_t efdr;
-	return read(q->efd_r, &efdr, sizeof(uint64_t));
-}
-static ssize_t spsc_check_w(struct spsc *q)
-{
-	uint64_t efdr;
-	return read(q->efd_w, &efdr, sizeof(uint64_t));
-}
-static void spsc_notify_r(struct spsc *q)
-{
-	uint64_t efdu = 1;
-	write(q->efd_r, &efdu, sizeof(uint64_t));
-}
-static void spsc_notify_w(struct spsc *q)
-{
-	uint64_t efdu = 1;
-	write(q->efd_w, &efdu, sizeof(uint64_t));
-}
-
-/*! Adds element to the queue by copying the data.
- *  \param[in] q queue.
- *  \param[in] elem input buffer, must match the originally configured queue buffer size!.
- *  \returns true if queue was not full and element was successfully pushed */
-bool spsc_push(struct spsc *q, void *elem)
-{
-	size_t cur_wp, cur_rp;
-	cur_wp = atomic_load_explicit(&q->writeptr, memory_order_relaxed);
-	cur_rp = atomic_load_explicit(&q->readptr, memory_order_acquire);
-	if ((cur_wp + 1) % q->count == cur_rp) {
-		spsc_check_w(q); /* blocks, ensures next (!) call succeeds */
-		return false;
-	}
-	memcpy((void *)q->data[cur_wp], elem, q->size_per_buf);
-	atomic_store_explicit(&q->writeptr, (cur_wp + 1) % q->count, memory_order_release);
-	spsc_notify_r(q); /* fine after release */
-	return true;
-}
-
-/*! Reads the read-fd of the queue, which, depending on settings passed on queue creation, blocks.
- * This function can be used to deliberately wait for a non-empty queue on the read side.
- *  \param[in] q queue.
- *  \returns result of reading the fd. */
-ssize_t spsc_prep_pop(struct spsc *q)
-{
-	return spsc_check_r(q);
-}
-
-/*! Removes element from the queue by copying the data.
- *  \param[in] q queue.
- *  \param[in] elem output buffer, must match the originally configured queue buffer size!.
- *  \returns true if queue was not empty and element was successfully removed */
-bool spsc_pop(struct spsc *q, void *elem)
-{
-	size_t cur_wp, cur_rp;
-	cur_wp = atomic_load_explicit(&q->writeptr, memory_order_acquire);
-	cur_rp = atomic_load_explicit(&q->readptr, memory_order_relaxed);
-
-	if (cur_wp == cur_rp) /* blocks via prep_pop */
-		return false;
-	memcpy(elem, (void *)q->data[cur_rp], q->size_per_buf);
-	atomic_store_explicit(&q->readptr, (cur_rp + 1) % q->count, memory_order_release);
-	spsc_notify_w(q);
-	return true;
-}
-
-/*! Creates a bidirectional queue channel that consists of two queues, one in each direction,
- *  commonly referred to as a and b side.
- *  \param[in] talloc_ctx allocation context.
- *  \param[in] count number of buffers per queue.
- *  \param[in] size_per_buf size of buffers per queue.
- *  \param[in] blockr_a should reading the a-side read fd block?.
- *  \param[in] blockw_a should reading the a-side write fd block?.
- *  \param[in] blockr_b should reading the b-side read fd block?.
- *  \param[in] blockw_b should reading the b-side write fd block?.
-  *  \returns queue channel */
-struct qchan spsc_chan_init_ex(void *talloc_ctx, unsigned int count, unsigned int size_per_buf, bool blockr_a,
-			       bool blockw_a, bool blockr_b, bool blockw_b)
-{
-	struct qchan q;
-	q.a = spsc_init(talloc_ctx, count, size_per_buf, blockr_a, blockw_a);
-	q.b = spsc_init(talloc_ctx, count, size_per_buf, blockr_b, blockw_b);
-	return q;
-}
-
-/*! Creates a bidirectional queue channel that consists of two queues, one in each direction,
- *  commonly referred to as a and b side.
- *  \param[in] talloc_ctx allocation context.
- *  \param[in] count number of buffers per queue.
- *  \param[in] size_per_buf size of buffers per queue.
- *  \returns queue channel */
-struct qchan spsc_chan_init(void *talloc_ctx, unsigned int count, unsigned int size_per_buf)
-{
-	return spsc_chan_init_ex(talloc_ctx, count, size_per_buf, false, true, false, true);
-}
-
-/*! Closes a bidirectional queue channel.
- *  \param[in] q queue */
-void spsc_chan_close(struct qchan *q)
-{
-	spsc_deinit(q->a);
-	spsc_deinit(q->b);
-	free(q);
-}
-
-/*! Gets queue channel read/write fd for a/b side according to function name.
- *  \param[in] q queue channel.
- *  \returns fd */
-int spsc_get_a_rdfd(struct qchan *q)
-{
-	return q->a->efd_r;
-}
-/*! Gets queue channel read/write fd for a/b side according to function name.
- *  \param[in] q queue channel.
- *  \returns fd */
-int spsc_get_b_rdfd(struct qchan *q)
-{
-	return q->b->efd_r;
-}
-/*! Gets queue channel read/write fd for a/b side according to function name.
- *  \param[in] q queue channel.
- *  \returns fd */
-int spsc_get_a_wrfd(struct qchan *q)
-{
-	return q->a->efd_w;
-}
-/*! Gets queue channel read/write fd for a/b side according to function name.
- *  \param[in] q queue channel.
- *  \returns fd */
-int spsc_get_b_wrfd(struct qchan *q)
-{
-	return q->b->efd_w;
-}
--- a/src/libosmo-mgcp/mgcp_trunk.c
+++ b/src/libosmo-mgcp/mgcp_trunk.c
@@ -27,31 +27,14 @@
 #include <osmocom/mgcp/mgcp_trunk.h>
 #include <osmocom/mgcp/mgcp_e1.h>
 #include <osmocom/abis/e1_input.h>
-#include <osmocom/core/stat_item.h>

-const struct value_string mgcp_trunk_type_strs[] = {
-	{ MGCP_TRUNK_VIRTUAL,		"virtual" },
-	{ MGCP_TRUNK_E1,		"e1" },
-	{ 0, NULL }
-};
-
-/* Free trunk, this function is automatically called by talloc_free when the trunk is freed. It does not free the
- * endpoints on the trunk, this must be done separately before freeing the trunk. */
-static int trunk_free_talloc_destructor(struct mgcp_trunk *trunk)
-{
-	llist_del(&trunk->entry);
-	mgcp_ratectr_trunk_free(trunk);
-	mgcp_stat_trunk_free(trunk);
-	return 0;
-}
-
-/*! allocate trunk and add it to the trunk list.
+/*! allocate trunk and add it (if required) to the trunk list.
 *  (called once at startup by VTY).
 *  \param[in] cfg mgcp configuration.
 *  \param[in] ttype trunk type.
 *  \param[in] nr trunk number.
 *  \returns pointer to allocated trunk, NULL on failure. */
-struct mgcp_trunk *mgcp_trunk_alloc(struct mgcp_config *cfg, enum mgcp_trunk_type ttype, unsigned int nr)
+struct mgcp_trunk *mgcp_trunk_alloc(struct mgcp_config *cfg, enum mgcp_trunk_type ttype, int nr)
 {
 	struct mgcp_trunk *trunk;

@@ -74,9 +57,7 @@ struct mgcp_trunk *mgcp_trunk_alloc(struct mgcp_config *cfg, enum mgcp_trunk_typ

 	llist_add_tail(&trunk->entry, &cfg->trunks);

-	mgcp_ratectr_trunk_alloc(trunk);
-	mgcp_stat_trunk_alloc(trunk);
-	talloc_set_destructor(trunk, trunk_free_talloc_destructor);
+        mgcp_ratectr_trunk_alloc(cfg, &trunk->ratectr);

 	return trunk;
 }
@@ -123,7 +104,7 @@ int mgcp_trunk_alloc_endpts(struct mgcp_trunk *trunk)
 	OSMO_ASSERT(number_endpoints < 65534);

 	/* allocate pointer array for the endpoints */
-	trunk->endpoints = talloc_zero_array(trunk, struct mgcp_endpoint*,
+	trunk->endpoints = talloc_zero_array(trunk->cfg, struct mgcp_endpoint*,
 					     number_endpoints);
 	if (!trunk->endpoints)
 		return -1;
@@ -140,8 +121,7 @@ int mgcp_trunk_alloc_endpts(struct mgcp_trunk *trunk)

 	/* make the endpoints we just created available to the MGW code */
 	trunk->number_endpoints = number_endpoints;
-	osmo_stat_item_set(osmo_stat_item_group_get_item(trunk->stats.common, TRUNK_STAT_ENDPOINTS_TOTAL),
-			   trunk->number_endpoints);
+
 	return 0;
 }

@@ -185,7 +165,7 @@ int mgcp_trunk_equip(struct mgcp_trunk *trunk)
 *  \param[in] ttype trunk type.
 *  \param[in] nr trunk number.
 *  \returns pointer to trunk configuration, NULL on error. */
-struct mgcp_trunk *mgcp_trunk_by_num(const struct mgcp_config *cfg, enum mgcp_trunk_type ttype, unsigned int nr)
+struct mgcp_trunk *mgcp_trunk_by_num(const struct mgcp_config *cfg, enum mgcp_trunk_type ttype, int nr)
 {
 	struct mgcp_trunk *trunk;

@@ -198,9 +178,9 @@ struct mgcp_trunk *mgcp_trunk_by_num(const struct mgcp_config *cfg, enum mgcp_tr
 }

 /* Made public for unit-testing, do not use from outside this file */
-int e1_trunk_nr_from_epname(unsigned int *trunk_nr, const char *epname)
+int e1_trunk_nr_from_epname(const char *epname)
 {
-	unsigned long trunk_nr_temp;
+	unsigned long int trunk_nr;
 	size_t prefix_len;
 	char *str_trunk_nr_end;

@@ -209,41 +189,13 @@ int e1_trunk_nr_from_epname(unsigned int *trunk_nr, const char *epname)
 		return -EINVAL;

 	errno = 0;
-	trunk_nr_temp = strtoul(epname + prefix_len, &str_trunk_nr_end, 10);
-	if (errno == ERANGE || trunk_nr_temp > 64
+	trunk_nr = strtoul(epname + prefix_len, &str_trunk_nr_end, 10);
+	if (errno == ERANGE || trunk_nr > 64
 	    || epname + prefix_len == str_trunk_nr_end
 	    || str_trunk_nr_end[0] != '/')
 		return -EINVAL;
-	else {
-		*trunk_nr = (unsigned int)trunk_nr_temp;
-		return 0;
-	}
-}
-
-/* Check if the domain name, which is supplied with the endpoint name
- * matches the configuration. */
-static int check_domain_name(const char *epname, const struct mgcp_config *cfg)
-{
-	char *domain_to_check;
-
-	domain_to_check = strstr(epname, "@");
-	if (!domain_to_check) {
-		LOGP(DLMGCP, LOGL_ERROR, "missing domain name in endpoint name \"%s\", expecting \"%s\"\n",
-		     epname, cfg->domain);
-		return -EINVAL;
-	}
-
-	/* Accept any domain if configured as "*" */
-	if (!strcmp(cfg->domain, "*"))
-		return 0;
-
-	if (strcmp(domain_to_check+1, cfg->domain) != 0) {
-		LOGP(DLMGCP, LOGL_ERROR, "wrong domain name in endpoint name \"%s\", expecting \"%s\"\n",
-		     epname, cfg->domain);
-		return -EINVAL;
-	}
-
-	return 0;
+	else
+		return trunk_nr;
 }

 /*! Find a trunk by the trunk prefix in the endpoint name.
@@ -254,23 +206,18 @@ struct mgcp_trunk *mgcp_trunk_by_name(const struct mgcp_config *cfg, const char
 {
 	size_t prefix_len;
 	char epname_lc[MGCP_ENDPOINT_MAXLEN];
-	unsigned int trunk_nr;
-	int rc;
+	int trunk_nr;

 	osmo_str_tolower_buf(epname_lc, sizeof(epname_lc), epname);
 	epname = epname_lc;

-	/* All endpoint names require a domain as suffix */
-	if (check_domain_name(epname, cfg))
-		return NULL;
-
 	prefix_len = sizeof(MGCP_ENDPOINT_PREFIX_VIRTUAL_TRUNK) - 1;
 	if (strncmp(epname, MGCP_ENDPOINT_PREFIX_VIRTUAL_TRUNK, prefix_len) == 0) {
 		return mgcp_trunk_by_num(cfg, MGCP_TRUNK_VIRTUAL, MGCP_VIRT_TRUNK_ID);
 	}

-	rc = e1_trunk_nr_from_epname(&trunk_nr, epname);
-	if (rc == 0)
+	trunk_nr = e1_trunk_nr_from_epname(epname);
+	if (trunk_nr >= 0)
 		return mgcp_trunk_by_num(cfg, MGCP_TRUNK_E1, trunk_nr);

 	/* Earlier versions of osmo-mgw were accepting endpoint names
--- a/src/libosmo-mgcp/mgcp_vty.c
+++ b/src/libosmo-mgcp/mgcp_vty.c
@@ -65,17 +65,17 @@ static int config_write_mgcp(struct vty *vty)

 	vty_out(vty, "mgcp%s", VTY_NEWLINE);
 	vty_out(vty, " domain %s%s", g_cfg->domain, VTY_NEWLINE);
-	if (strlen(g_cfg->local_ip))
+	if (g_cfg->local_ip)
 		vty_out(vty, "  local ip %s%s", g_cfg->local_ip, VTY_NEWLINE);
 	vty_out(vty, " bind ip %s%s", g_cfg->source_addr, VTY_NEWLINE);
 	vty_out(vty, " bind port %u%s", g_cfg->source_port, VTY_NEWLINE);
 	vty_out(vty, " rtp port-range %u %u%s",
 		g_cfg->net_ports.range_start, g_cfg->net_ports.range_end,
 		VTY_NEWLINE);
-	if (strlen(g_cfg->net_ports.bind_addr_v4))
+	if (g_cfg->net_ports.bind_addr_v4)
 		vty_out(vty, " rtp bind-ip %s%s",
 			g_cfg->net_ports.bind_addr_v4, VTY_NEWLINE);
-	if (strlen(g_cfg->net_ports.bind_addr_v6))
+	if (g_cfg->net_ports.bind_addr_v6)
 		vty_out(vty, " rtp bind-ip-v6 %s%s",
 			g_cfg->net_ports.bind_addr_v6, VTY_NEWLINE);
 	if (g_cfg->net_ports.bind_addr_probe)
@@ -83,8 +83,6 @@ static int config_write_mgcp(struct vty *vty)
 	else
 		vty_out(vty, " no rtp ip-probing%s", VTY_NEWLINE);
 	vty_out(vty, " rtp ip-dscp %d%s", g_cfg->endp_dscp, VTY_NEWLINE);
-	if (g_cfg->endp_priority)
-		vty_out(vty, " rtp socket-priority %d%s", g_cfg->endp_priority, VTY_NEWLINE);
 	if (trunk->keepalive_interval == MGCP_KEEPALIVE_ONCE)
 		vty_out(vty, " rtp keep-alive once%s", VTY_NEWLINE);
 	else if (trunk->keepalive_interval)
@@ -122,7 +120,7 @@ static int config_write_mgcp(struct vty *vty)
 		trunk->v.vty_number_endpoints, VTY_NEWLINE);
 	vty_out(vty, " %sallow-transcoding%s",
 		trunk->no_audio_transcoding ? "no " : "", VTY_NEWLINE);
-	if (strlen(g_cfg->call_agent_addr))
+	if (g_cfg->call_agent_addr)
 		vty_out(vty, " call-agent ip %s%s", g_cfg->call_agent_addr,
 			VTY_NEWLINE);
 	if (g_cfg->force_ptime > 0)
@@ -169,11 +167,11 @@ static void dump_rtp_end(struct vty *vty, struct mgcp_conn_rtp *conn)
 	struct rate_ctr *rx_packets, *rx_bytes;
 	struct rate_ctr *dropped_packets;

-	tx_packets = rate_ctr_group_get_ctr(conn->rate_ctr_group, RTP_PACKETS_TX_CTR);
-	tx_bytes = rate_ctr_group_get_ctr(conn->rate_ctr_group, RTP_OCTETS_TX_CTR);
-	rx_packets = rate_ctr_group_get_ctr(conn->rate_ctr_group, RTP_PACKETS_RX_CTR);
-	rx_bytes = rate_ctr_group_get_ctr(conn->rate_ctr_group, RTP_OCTETS_RX_CTR);
-	dropped_packets = rate_ctr_group_get_ctr(conn->rate_ctr_group, RTP_DROPPED_PACKETS_CTR);
+	tx_packets = &conn->rate_ctr_group->ctr[RTP_PACKETS_TX_CTR];
+	tx_bytes = &conn->rate_ctr_group->ctr[RTP_OCTETS_TX_CTR];
+	rx_packets = &conn->rate_ctr_group->ctr[RTP_PACKETS_RX_CTR];
+	rx_bytes = &conn->rate_ctr_group->ctr[RTP_OCTETS_RX_CTR];
+	dropped_packets = &conn->rate_ctr_group->ctr[RTP_DROPPED_PACKETS_CTR];

 	vty_out(vty,
 		"   Packets Sent: %" PRIu64 " (%" PRIu64 " bytes total)%s"
@@ -200,11 +198,11 @@ static void dump_rtp_end(struct vty *vty, struct mgcp_conn_rtp *conn)
 }

 static void dump_endpoint(struct vty *vty, struct mgcp_endpoint *endp,
-			  unsigned int trunk_nr, enum mgcp_trunk_type trunk_type, int show_stats)
+			  int trunk_nr, enum mgcp_trunk_type trunk_type, int show_stats)
 {
 	struct mgcp_conn *conn;

-	vty_out(vty, "%s trunk %u endpoint %s:%s",
+	vty_out(vty, "%s trunk %d endpoint %s:%s",
 		trunk_type == MGCP_TRUNK_VIRTUAL ? "Virtual" : "E1", trunk_nr, endp->name, VTY_NEWLINE);
 	vty_out(vty, "   Availability: %s%s",
 		mgcp_endp_avail(endp) ? "available" : "not in service", VTY_NEWLINE);
@@ -218,7 +216,7 @@ static void dump_endpoint(struct vty *vty, struct mgcp_endpoint *endp,
 		vty_out(vty, "   CONN: %s%s", mgcp_conn_dump(conn), VTY_NEWLINE);

 		if (show_stats) {
-			if (endp->trunk->cfg->conn_timeout) {
+			if (endp->cfg->conn_timeout) {
 				struct timeval remaining;
 				osmo_timer_remaining(&conn->watchdog, NULL, &remaining);
 				vty_out(vty, "   Currently remaining timeout (seconds): %d.%06d%s",
@@ -301,10 +299,9 @@ static void dump_ratectr_trunk(struct vty *vty, struct mgcp_trunk *trunk)
 }


-static void dump_trunk(struct vty *vty, struct mgcp_trunk *trunk, int show_stats, int active_only)
+static void dump_trunk(struct vty *vty, struct mgcp_trunk *trunk, int show_stats)
 {
 	int i;
-	int active_count = 0;

 	vty_out(vty, "%s trunk %d with %d endpoints:%s",
 		trunk->trunk_type == MGCP_TRUNK_VIRTUAL ? "Virtual" : "E1",
@@ -317,30 +314,29 @@ static void dump_trunk(struct vty *vty, struct mgcp_trunk *trunk, int show_stats

 	for (i = 0; i < trunk->number_endpoints; ++i) {
 		struct mgcp_endpoint *endp = trunk->endpoints[i];
-		if (!active_only || !llist_empty(&endp->conns)) {
-			dump_endpoint(vty, endp, trunk->trunk_nr, trunk->trunk_type,
-				      show_stats);
-			if (i < trunk->number_endpoints - 1)
-				vty_out(vty, "%s", VTY_NEWLINE);
-		}
-		if (!llist_empty(&endp->conns))
-			active_count++;
+		dump_endpoint(vty, endp, trunk->trunk_nr, trunk->trunk_type,
+			      show_stats);
+		if (i < trunk->number_endpoints - 1)
+			vty_out(vty, "%s", VTY_NEWLINE);
 	}

-	if (active_count == 0)
-		vty_out(vty, "No endpoints in use.%s", VTY_NEWLINE);
-
 	if (show_stats)
 		dump_ratectr_trunk(vty, trunk);
 }

-static int mgcp_show(struct vty *vty, int argc, const char **argv,
-		     int show_stats, int active_only)
+#define SHOW_MGCP_STR "Display information about the MGCP Media Gateway\n"
+
+DEFUN(show_mcgp, show_mgcp_cmd,
+      "show mgcp [stats]",
+      SHOW_STR
+      SHOW_MGCP_STR
+      "Include Statistics\n")
 {
 	struct mgcp_trunk *trunk;
+	int show_stats = argc >= 1;

 	llist_for_each_entry(trunk, &g_cfg->trunks, entry)
-		dump_trunk(vty, trunk, show_stats, active_only);
+		dump_trunk(vty, trunk, show_stats);

 	if (g_cfg->osmux)
 		vty_out(vty, "Osmux used CID: %d%s", osmux_cid_pool_count_used(),
@@ -352,27 +348,6 @@ static int mgcp_show(struct vty *vty, int argc, const char **argv,
 	return CMD_SUCCESS;
 }

-#define SHOW_MGCP_STR "Display information about the MGCP Media Gateway\n"
-
-DEFUN(show_mgcp, show_mgcp_cmd,
-      "show mgcp [stats]",
-      SHOW_STR
-      SHOW_MGCP_STR
-      "Include statistics\n")
-{
-	int show_stats = argc >= 1;
-	return mgcp_show(vty, argc, argv, show_stats, 0);
-}
-
-DEFUN(show_mgcp_active, show_mgcp_active_cmd,
-      "show mgcp active",
-      SHOW_STR
-      SHOW_MGCP_STR
-      "Show only endpoints with active connections\n")
-{
-	return mgcp_show(vty, argc, argv, 0, 1);
-}
-
 static void
 dump_mgcp_endpoint(struct vty *vty, struct mgcp_trunk *trunk, const char *epname)
 {
@@ -382,7 +357,7 @@ dump_mgcp_endpoint(struct vty *vty, struct mgcp_trunk *trunk, const char *epname
 		/* If a trunk is given, search on that specific trunk only */
 		endp = mgcp_endp_by_name_trunk(NULL, epname, trunk);
 		if (!endp) {
-			vty_out(vty, "endpoint %s not configured on trunk %u%s", epname, trunk->trunk_nr, VTY_NEWLINE);
+			vty_out(vty, "endpoint %s not configured on trunk %d%s", epname, trunk->trunk_nr, VTY_NEWLINE);
 			return;
 		}
 	} else {
@@ -443,7 +418,7 @@ DEFUN_USRATTR(cfg_mgcp_local_ip,
 	      "IPv4 Address to use in SDP record\n"
 	      "IPv6 Address to use in SDP record\n")
 {
-	osmo_strlcpy(g_cfg->local_ip, argv[0], sizeof(g_cfg->local_ip));
+	osmo_talloc_replace_string(g_cfg, &g_cfg->local_ip, argv[0]);
 	return CMD_SUCCESS;
 }

@@ -455,7 +430,7 @@ DEFUN(cfg_mgcp_bind_ip,
      "IPv4 Address to bind to\n"
      "IPv6 Address to bind to\n")
 {
-	osmo_strlcpy(g_cfg->source_addr, argv[0], sizeof(g_cfg->source_addr));
+	osmo_talloc_replace_string(g_cfg, &g_cfg->source_addr, argv[0]);
 	return CMD_SUCCESS;
 }

@@ -533,7 +508,7 @@ DEFUN_USRATTR(cfg_mgcp_rtp_bind_ip,
 	      RTP_STR "Bind endpoints facing the Network\n"
 	      "IPv4 Address to bind to\n")
 {
-	osmo_strlcpy(g_cfg->net_ports.bind_addr_v4, argv[0], sizeof(g_cfg->net_ports.bind_addr_v4));
+	osmo_talloc_replace_string(g_cfg, &g_cfg->net_ports.bind_addr_v4, argv[0]);
 	return CMD_SUCCESS;
 }
 ALIAS_DEPRECATED(cfg_mgcp_rtp_bind_ip,
@@ -548,7 +523,8 @@ DEFUN_USRATTR(cfg_mgcp_rtp_no_bind_ip,
 	      NO_STR RTP_STR "Bind endpoints facing the Network\n"
 	      "Address to bind to\n")
 {
-	osmo_strlcpy(g_cfg->net_ports.bind_addr_v4, "", sizeof(g_cfg->net_ports.bind_addr_v4));
+	talloc_free(g_cfg->net_ports.bind_addr_v4);
+	g_cfg->net_ports.bind_addr_v4 = NULL;
 	return CMD_SUCCESS;
 }
 ALIAS_DEPRECATED(cfg_mgcp_rtp_no_bind_ip,
@@ -564,7 +540,7 @@ DEFUN_USRATTR(cfg_mgcp_rtp_bind_ip_v6,
 	      RTP_STR "Bind endpoints facing the Network\n"
 	      "IPv6 Address to bind to\n")
 {
-	osmo_strlcpy(g_cfg->net_ports.bind_addr_v6, argv[0], sizeof(g_cfg->net_ports.bind_addr_v6));
+	osmo_talloc_replace_string(g_cfg, &g_cfg->net_ports.bind_addr_v6, argv[0]);
 	return CMD_SUCCESS;
 }

@@ -575,7 +551,8 @@ DEFUN_USRATTR(cfg_mgcp_rtp_no_bind_ip_v6,
 	      NO_STR RTP_STR "Bind endpoints facing the Network\n"
 	      "Address to bind to\n")
 {
-	osmo_strlcpy(g_cfg->net_ports.bind_addr_v6, "", sizeof(g_cfg->net_ports.bind_addr_v6));
+	talloc_free(g_cfg->net_ports.bind_addr_v6);
+	g_cfg->net_ports.bind_addr_v6 = NULL;
 	return CMD_SUCCESS;
 }

@@ -602,27 +579,19 @@ DEFUN_USRATTR(cfg_mgcp_rtp_no_net_bind_ip_probing,
 DEFUN_USRATTR(cfg_mgcp_rtp_ip_dscp,
 	      cfg_mgcp_rtp_ip_dscp_cmd,
 	      X(MGW_CMD_ATTR_NEWCONN),
-	      "rtp ip-dscp <0-63>",
+	      "rtp ip-dscp <0-255>",
 	      RTP_STR
-	      "Use specified DSCP for the audio stream (including Osmux)\n" "The DSCP value\n")
+	      "Apply IP_TOS to the audio stream (including Osmux)\n" "The DSCP value\n")
 {
 	int dscp = atoi(argv[0]);
 	g_cfg->endp_dscp = dscp;
 	return CMD_SUCCESS;
 }

-DEFUN_USRATTR(cfg_mgcp_rtp_priority,
-	      cfg_mgcp_rtp_priority_cmd,
-	      X(MGW_CMD_ATTR_NEWCONN),
-	      "rtp socket-priority <0-255>",
-	      RTP_STR
-	      "socket priority (values > 6 require CAP_NET_ADMIN)\n" "socket priority value\n")
-{
-	int prio = atoi(argv[0]);
-	g_cfg->endp_priority = prio;
-	return CMD_SUCCESS;
-}
-
+ALIAS_DEPRECATED(cfg_mgcp_rtp_ip_dscp, cfg_mgcp_rtp_ip_tos_cmd,
+		 "rtp ip-tos <0-255>",
+		 RTP_STR
+		 "Apply IP_TOS to the audio stream\n" "The DSCP value\n")
 #define FORCE_PTIME_STR "Force a fixed ptime for packets sent"
 DEFUN_USRATTR(cfg_mgcp_rtp_force_ptime,
 	      cfg_mgcp_rtp_force_ptime_cmd,
@@ -948,7 +917,7 @@ DEFUN(cfg_mgcp_agent_addr,
      "IPv4 Address of the call agent\n"
      "IPv6 Address of the call agent\n")
 {
-	osmo_strlcpy(g_cfg->call_agent_addr, argv[0], sizeof(g_cfg->call_agent_addr));
+	osmo_talloc_replace_string(g_cfg, &g_cfg->call_agent_addr, argv[0]);
 	return CMD_SUCCESS;
 }

@@ -961,7 +930,7 @@ DEFUN(cfg_mgcp_trunk, cfg_mgcp_trunk_cmd,
      "trunk <0-64>", "Configure a SS7 trunk\n" "Trunk Nr\n")
 {
 	struct mgcp_trunk *trunk;
-	unsigned int index = atoi(argv[0]);
+	int index = atoi(argv[0]);

 	trunk = mgcp_trunk_by_num(g_cfg, MGCP_TRUNK_E1, index);
 	if (!trunk) {
@@ -989,11 +958,10 @@ static int config_write_trunk(struct vty *vty)
 		   config of trunk 0 here. The configuration for the virtual
 		   trunk is written by config_write_mgcp(). */

-		if (trunk->trunk_type == MGCP_TRUNK_VIRTUAL
-		    && trunk->trunk_nr == MGCP_VIRT_TRUNK_ID)
+		if (trunk->trunk_nr == MGCP_VIRT_TRUNK_ID)
 			continue;

-		vty_out(vty, " trunk %u%s", trunk->trunk_nr, VTY_NEWLINE);
+		vty_out(vty, " trunk %d%s", trunk->trunk_nr, VTY_NEWLINE);
 		vty_out(vty, "  line %u%s", trunk->e1.vty_line_nr, VTY_NEWLINE);
 		vty_out(vty, "  %ssdp audio-payload send-ptime%s",
 			trunk->audio_send_ptime ? "" : "no ", VTY_NEWLINE);
@@ -1087,32 +1055,6 @@ DEFUN_DEPRECATED(cfg_trunk_loop,
 	return CMD_SUCCESS;
 }

-DEFUN_USRATTR(cfg_trunk_force_realloc,
-	      cfg_trunk_force_realloc_cmd,
-	      X(MGW_CMD_ATTR_NEWCONN),
-	      "force-realloc (0|1)",
-	      "Force endpoint reallocation when the endpoint is still seized\n"
-	      "Don't force reallocation\n" "force reallocation\n")
-{
-	struct mgcp_trunk *trunk = vty->index;
-	OSMO_ASSERT(trunk);
-	trunk->force_realloc = atoi(argv[0]);
-	return CMD_SUCCESS;
-}
-
-DEFUN_ATTR(cfg_trunk_rtp_accept_all,
-	   cfg_trunk_rtp_accept_all_cmd,
-	   "rtp-accept-all (0|1)",
-	   "Accept all RTP packets, even when the originating IP/Port does not match\n"
-	   "enable filter\n" "disable filter\n",
-	   CMD_ATTR_IMMEDIATE)
-{
-	struct mgcp_trunk *trunk = vty->index;
-	OSMO_ASSERT(trunk);
-	trunk->rtp_accept_all = atoi(argv[0]);
-	return CMD_SUCCESS;
-}
-
 DEFUN_USRATTR(cfg_trunk_sdp_payload_send_ptime,
 	      cfg_trunk_sdp_payload_send_ptime_cmd,
 	      X(MGW_CMD_ATTR_NEWCONN),
@@ -1333,7 +1275,7 @@ DEFUN(loop_conn,
 	}

 	if (!trunk->endpoints) {
-		vty_out(vty, "%%Trunk %u has no endpoints allocated.%s",
+		vty_out(vty, "%%Trunk %d has no endpoints allocated.%s",
 			trunk->trunk_nr, VTY_NEWLINE);
 		return CMD_WARNING;
 	}
@@ -1394,7 +1336,7 @@ DEFUN(tap_rtp,
 	}

 	if (!trunk->endpoints) {
-		vty_out(vty, "%%Trunk %u has no endpoints allocated.%s",
+		vty_out(vty, "%%Trunk %d has no endpoints allocated.%s",
 			trunk->trunk_nr, VTY_NEWLINE);
 		return CMD_WARNING;
 	}
@@ -1461,7 +1403,7 @@ DEFUN(free_endp, free_endp_cmd,
 	}

 	if (!trunk->endpoints) {
-		vty_out(vty, "%%Trunk %u has no endpoints allocated.%s",
+		vty_out(vty, "%%Trunk %d has no endpoints allocated.%s",
 			trunk->trunk_nr, VTY_NEWLINE);
 		return CMD_WARNING;
 	}
@@ -1494,7 +1436,7 @@ DEFUN(reset_endp, reset_endp_cmd,
 	}

 	if (!trunk->endpoints) {
-		vty_out(vty, "%%Trunk %u has no endpoints allocated.%s",
+		vty_out(vty, "%%Trunk %d has no endpoints allocated.%s",
 			trunk->trunk_nr, VTY_NEWLINE);
 		return CMD_WARNING;
 	}
@@ -1557,7 +1499,7 @@ DEFUN(cfg_mgcp_osmux_ip,
      "IPv4 Address to bind to\n"
      "IPv6 Address to bind to\n")
 {
-	osmo_strlcpy(g_cfg->osmux_addr, argv[0], sizeof(g_cfg->osmux_addr));
+	osmo_talloc_replace_string(g_cfg, &g_cfg->osmux_addr, argv[0]);
 	return CMD_SUCCESS;
 }

@@ -1627,7 +1569,6 @@ DEFUN(cfg_mgcp_conn_timeout,
 int mgcp_vty_init(void)
 {
 	install_element_ve(&show_mgcp_cmd);
-	install_element_ve(&show_mgcp_active_cmd);
 	install_element_ve(&show_mgcp_endpoint_cmd);
 	install_element_ve(&show_mgcp_trunk_endpoint_cmd);
 	install_element(ENABLE_NODE, &loop_conn_cmd);
@@ -1654,7 +1595,7 @@ int mgcp_vty_init(void)
 	install_element(MGCP_NODE, &cfg_mgcp_rtp_net_bind_ip_probing_cmd);
 	install_element(MGCP_NODE, &cfg_mgcp_rtp_no_net_bind_ip_probing_cmd);
 	install_element(MGCP_NODE, &cfg_mgcp_rtp_ip_dscp_cmd);
-	install_element(MGCP_NODE, &cfg_mgcp_rtp_priority_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_rtp_ip_tos_cmd);
 	install_element(MGCP_NODE, &cfg_mgcp_rtp_force_ptime_cmd);
 	install_element(MGCP_NODE, &cfg_mgcp_no_rtp_force_ptime_cmd);
 	install_element(MGCP_NODE, &cfg_mgcp_rtp_keepalive_cmd);
@@ -1705,8 +1646,6 @@ int mgcp_vty_init(void)
 	install_element(TRUNK_NODE, &cfg_trunk_payload_number_cmd_old);
 	install_element(TRUNK_NODE, &cfg_trunk_payload_name_cmd_old);
 	install_element(TRUNK_NODE, &cfg_trunk_loop_cmd);
-	install_element(TRUNK_NODE, &cfg_trunk_force_realloc_cmd);
-	install_element(TRUNK_NODE, &cfg_trunk_rtp_accept_all_cmd);
 	install_element(TRUNK_NODE, &cfg_trunk_omit_rtcp_cmd);
 	install_element(TRUNK_NODE, &cfg_trunk_no_omit_rtcp_cmd);
 	install_element(TRUNK_NODE, &cfg_trunk_patch_rtp_ssrc_cmd);
@@ -1746,7 +1685,7 @@ int mgcp_parse_config(const char *config_file, struct mgcp_config *cfg,
 		return rc;
 	}

-	if (!strlen(g_cfg->source_addr)) {
+	if (!g_cfg->source_addr) {
 		fprintf(stderr, "You need to specify a bind address.\n");
 		return -1;
 	}
@@ -1754,7 +1693,7 @@ int mgcp_parse_config(const char *config_file, struct mgcp_config *cfg,
 	llist_for_each_entry(trunk, &g_cfg->trunks, entry) {
 		if (mgcp_trunk_equip(trunk) != 0) {
 			LOGP(DLMGCP, LOGL_ERROR,
-			     "Failed to initialize trunk %u (%d endpoints)\n",
+			     "Failed to initialize trunk %d (%d endpoints)\n",
 			     trunk->trunk_nr, trunk->number_endpoints);
 			return -1;
 		}
--- a/src/osmo-mgw/mgw_main.c
+++ b/src/osmo-mgw/mgw_main.c
@@ -97,41 +97,13 @@ void *tall_mgw_ctx = NULL;

 static void print_help()
 {
-	printf("Some useful options:\n");
+	printf("Some useful help...\n");
 	printf(" -h --help is printing this text.\n");
 	printf(" -c --config-file filename The config file to use.\n");
 	printf(" -s --disable-color\n");
 	printf(" -D --daemonize Fork the process into a background daemon\n");
 	printf(" -V --version Print the version number\n");
-
-	printf("\nVTY reference generation:\n");
-	printf("    --vty-ref-mode MODE		VTY reference generation mode (e.g. 'expert').\n");
-	printf("    --vty-ref-xml		Generate the VTY reference XML output and exit.\n");
-}
-
-static void handle_long_options(const char *prog_name, const int long_option)
-{
-	static int vty_ref_mode = VTY_REF_GEN_MODE_DEFAULT;
-
-	switch (long_option) {
-	case 1:
-		vty_ref_mode = get_string_value(vty_ref_gen_mode_names, optarg);
-		if (vty_ref_mode < 0) {
-			fprintf(stderr, "%s: Unknown VTY reference generation "
-				"mode '%s'\n", prog_name, optarg);
-			exit(2);
-		}
-		break;
-	case 2:
-		fprintf(stderr, "Generating the VTY reference in mode '%s' (%s)\n",
-			get_value_string(vty_ref_gen_mode_names, vty_ref_mode),
-			get_value_string(vty_ref_gen_mode_desc, vty_ref_mode));
-		vty_dump_xml_ref_mode(stdout, (enum vty_ref_gen_mode) vty_ref_mode);
-		exit(0);
-	default:
-		fprintf(stderr, "%s: error parsing cmdline options\n", prog_name);
-		exit(2);
-	}
+	printf(" --vty-ref-xml Generate the VTY reference XML output and exit.\n");
 }

 static void handle_options(int argc, char **argv)
@@ -145,8 +117,7 @@ static void handle_options(int argc, char **argv)
 			{"daemonize", 0, 0, 'D'},
 			{"version", 0, 0, 'V'},
 			{"disable-color", 0, 0, 's'},
-			{"vty-ref-mode", 1, &long_option, 1},
-			{"vty-ref-xml", 0, &long_option, 2},
+			{"vty-ref-xml", 0, &long_option, 1},
 			{0, 0, 0, 0},
 		};

@@ -161,8 +132,14 @@ static void handle_options(int argc, char **argv)
 			exit(0);
 			break;
 		case 0:
-			handle_long_options(argv[0], long_option);
-			break;
+			switch (long_option) {
+			case 1:
+				vty_dump_xml_ref(stdout);
+				exit(0);
+			default:
+				fprintf(stderr, "error parsing cmdline options\n");
+				exit(2);
+			}
 		case 'c':
 			config_file = talloc_strdup(tall_mgw_ctx, optarg);
 			break;
@@ -235,7 +212,7 @@ static int read_call_agent(struct osmo_fd *fd, unsigned int what)
 	/* reset endpoints */
 	if (reset_endpoints) {
 		LOGP(DLMGCP, LOGL_NOTICE,
-		     "Asked to reset endpoints: %u/%d\n",
+		     "Asked to reset endpoints: %d/%d\n",
 		     reset_trunk->trunk_nr, reset_trunk->trunk_type);

 		/* reset flag */
@@ -243,7 +220,7 @@ static int read_call_agent(struct osmo_fd *fd, unsigned int what)

 		/* Walk over all endpoints and trigger a release, this will release all
 		 * endpoints, possible open connections are forcefully dropped */
-		for (i = 0; i < reset_trunk->number_endpoints; ++i)
+		for (i = 1; i < reset_trunk->number_endpoints; ++i)
 			mgcp_endp_release(reset_trunk->endpoints[i]);
 	}

@@ -369,12 +346,12 @@ int main(int argc, char **argv)

 	/* we need to bind a socket */
 	flags = OSMO_SOCK_F_BIND;
-	if (strlen(cfg->call_agent_addr))
+	if (cfg->call_agent_addr)
 		flags |= OSMO_SOCK_F_CONNECT;

 	rc = osmo_sock_init2_ofd(&cfg->gw_fd.bfd, AF_UNSPEC, SOCK_DGRAM, IPPROTO_UDP,
 				cfg->source_addr, cfg->source_port,
-				cfg->call_agent_addr, strlen(cfg->call_agent_addr) ? 2727 : 0, flags);
+				cfg->call_agent_addr, cfg->call_agent_addr ? 2727 : 0, flags);
 	if (rc < 0) {
 		perror("Gateway failed to bind");
 		return -1;
--- a/tests/mgcp/Makefile.am
+++ b/tests/mgcp/Makefile.am
@@ -24,7 +24,7 @@ EXTRA_DIST = \
 	mgcp_test.ok \
 	$(NULL)

-check_PROGRAMS = \
+noinst_PROGRAMS = \
 	mgcp_test \
 	$(NULL)

--- a/tests/mgcp/mgcp_test.c
+++ b/tests/mgcp/mgcp_test.c
@@ -30,7 +30,6 @@
 #include <osmocom/mgcp/mgcp_trunk.h>
 #include <osmocom/mgcp/mgcp_sdp.h>
 #include <osmocom/mgcp/mgcp_codec.h>
-#include <osmocom/mgcp/mgcp_network.h>

 #include <osmocom/core/application.h>
 #include <osmocom/core/talloc.h>
@@ -128,7 +127,7 @@ static void test_strline(void)
 	"a=fmtp:126 0/1/2\r\n" \
 	"a=ptime:40\r\n"

-#define MDCX4_ADDR0000 \
+#define MDCX4 \
 	"MDCX 18983216 1@mgw MGCP 1.0\r\n" \
 	"M: sendrecv\r" \
 	"C: 2\r\n" \
@@ -143,24 +142,6 @@ static void test_strline(void)
 	"a=rtpmap:99 AMR/8000\r\n" \
 	"a=ptime:40\r\n"

-#define MDCX4_ADDR0000_RET \
-	"527 18983216 FAIL\r\n"
-
-#define MDCX4 \
-	"MDCX 18983217 1@mgw MGCP 1.0\r\n" \
-	"M: sendrecv\r" \
-	"C: 2\r\n" \
-	"I: %s\r\n" \
-	"L: p:20, a:AMR, nt:IN\r\n" \
-	"\n" \
-	"v=0\r\n" \
-	"o=- %s 23 IN IP4 5.6.7.8\r\n" \
-	"c=IN IP4 5.6.7.8\r\n" \
-	"t=0 0\r\n" \
-	"m=audio 4441 RTP/AVP 99\r\n" \
-	"a=rtpmap:99 AMR/8000\r\n" \
-	"a=ptime:40\r\n"
-
 #define MDCX4_RET(Ident) \
 	"200 " Ident " OK\r\n" \
 	"\r\n" \
@@ -186,45 +167,45 @@ static void test_strline(void)
 	"a=ptime:40\r\n"

 #define MDCX4_PT1 \
-	"MDCX 18983218 1@mgw MGCP 1.0\r\n" \
+	"MDCX 18983217 1@mgw MGCP 1.0\r\n" \
 	"M: SENDRECV\r" \
 	"C: 2\r\n" \
 	"I: %s\r\n" \
 	"L: p:20-40, a:AMR, nt:IN\r\n" \
 	"\n" \
 	"v=0\r\n" \
-	"o=- %s 23 IN IP4 5.6.7.8\r\n" \
-	"c=IN IP4 5.6.7.8\r\n" \
+	"o=- %s 23 IN IP4 0.0.0.0\r\n" \
+	"c=IN IP4 0.0.0.0\r\n" \
 	"t=0 0\r\n" \
 	"m=audio 4441 RTP/AVP 99\r\n" \
 	"a=rtpmap:99 AMR/8000\r\n" \
 	"a=ptime:40\r\n"

 #define MDCX4_PT2 \
-	"MDCX 18983219 1@mgw MGCP 1.0\r\n" \
+	"MDCX 18983218 1@mgw MGCP 1.0\r\n" \
 	"M: sendrecv\r" \
 	"C: 2\r\n" \
 	"I: %s\r\n" \
 	"L: p:20-20, a:AMR, nt:IN\r\n" \
 	"\n" \
 	"v=0\r\n" \
-	"o=- %s 23 IN IP4 5.6.7.8\r\n" \
-	"c=IN IP4 5.6.7.8\r\n" \
+	"o=- %s 23 IN IP4 0.0.0.0\r\n" \
+	"c=IN IP4 0.0.0.0\r\n" \
 	"t=0 0\r\n" \
 	"m=audio 4441 RTP/AVP 99\r\n" \
 	"a=rtpmap:99 AMR/8000\r\n" \
 	"a=ptime:40\r\n"

 #define MDCX4_PT3 \
-	"MDCX 18983220 1@mgw MGCP 1.0\r\n" \
+	"MDCX 18983219 1@mgw MGCP 1.0\r\n" \
 	"M: sendrecv\r" \
 	"C: 2\r\n" \
 	"I: %s\r\n" \
 	"L: a:AMR, nt:IN\r\n" \
 	"\n" \
 	"v=0\r\n" \
-	"o=- %s 23 IN IP4 5.6.7.8\r\n" \
-	"c=IN IP4 5.6.7.8\r\n" \
+	"o=- %s 23 IN IP4 0.0.0.0\r\n" \
+	"c=IN IP4 0.0.0.0\r\n" \
 	"t=0 0\r\n" \
 	"m=audio 4441 RTP/AVP 99\r\n" \
 	"a=rtpmap:99 AMR/8000\r\n" \
@@ -232,47 +213,47 @@ static void test_strline(void)

 /* Test different upper/lower case in options */
 #define MDCX4_PT4 \
-	"MDCX 18983221 1@mgw MGCP 1.0\r\n" \
+	"MDCX 18983220 1@mgw MGCP 1.0\r\n" \
 	"m: sendrecv\r" \
 	"c: 2\r\n" \
 	"i: %s\r\n" \
 	"l: A:amr, NT:IN\r\n" \
 	"\n" \
 	"v=0\r\n" \
-	"o=- %s 23 IN IP4 5.6.7.8\r\n" \
-	"c=IN IP4 5.6.7.8\r\n" \
+	"o=- %s 23 IN IP4 0.0.0.0\r\n" \
+	"c=IN IP4 0.0.0.0\r\n" \
 	"t=0 0\r\n" \
 	"m=audio 4441 RTP/AVP 99\r\n" \
 	"a=rtpmap:99 AMR/8000\r\n" \
 	"a=ptime:40\r\n"

 #define MDCX4_SO \
-	"MDCX 18983222 1@mgw MGCP 1.0\r\n" \
+	"MDCX 18983221 1@mgw MGCP 1.0\r\n" \
 	"M: sendonly\r" \
 	"C: 2\r\n" \
 	"I: %s\r\n" \
 	"L: p:20, a:AMR, nt:IN\r\n" \
 	"\n" \
 	"v=0\r\n" \
-	"o=- %s 23 IN IP4 5.6.7.8\r\n" \
-	"c=IN IP4 5.6.7.8\r\n" \
+	"o=- %s 23 IN IP4 0.0.0.0\r\n" \
+	"c=IN IP4 0.0.0.0\r\n" \
 	"t=0 0\r\n" \
 	"m=audio 4441 RTP/AVP 99\r\n" \
 	"a=rtpmap:99 AMR/8000\r\n" \
 	"a=ptime:40\r\n"

 #define MDCX4_RO \
-	"MDCX 18983223 1@mgw MGCP 1.0\r\n" \
+	"MDCX 18983222 1@mgw MGCP 1.0\r\n" \
 	"M: recvonly\r" \
 	"C: 2\r\n" \
 	"I: %s\r\n" \
 	"L: p:20, a:AMR, nt:IN\r\n"

 #define MDCX_TOO_LONG_CI \
-	"MDCX 18983224 1@mgw MGCP 1.0\r\n" \
+	"MDCX 18983223 1@mgw MGCP 1.0\r\n" \
 	"I: 123456789012345678901234567890123\n"

-#define MDCX_TOO_LONG_CI_RET "510 18983224 FAIL\r\n"
+#define MDCX_TOO_LONG_CI_RET "510 18983223 FAIL\r\n"

 #define SHORT2	"CRCX 1"
 #define SHORT2_RET "510 000000 FAIL\r\n"
@@ -560,14 +541,13 @@ static const struct mgcp_test tests[] = {
 	{"MDCX2", MDCX_UNALLOCATED, MDCX_RET},
 	{"CRCX", CRCX, CRCX_RET, 97},
 	{"MDCX3", MDCX3, MDCX3_RET, PTYPE_IGNORE},
-	{"MDCX4_ADDR000", MDCX4_ADDR0000, MDCX4_ADDR0000_RET},
-	{"MDCX4", MDCX4, MDCX4_RET("18983217"), 99},
-	{"MDCX4_PT1", MDCX4_PT1, MDCX4_RET("18983218"), 99},
-	{"MDCX4_PT2", MDCX4_PT2, MDCX4_RET("18983219"), 99},
-	{"MDCX4_PT3", MDCX4_PT3, MDCX4_RET("18983220"), 99},
-	{"MDCX4_PT4", MDCX4_PT4, MDCX4_RET("18983221"), 99},
-	{"MDCX4_SO", MDCX4_SO, MDCX4_RET("18983222"), 99},
-	{"MDCX4_RO", MDCX4_RO, MDCX4_RO_RET("18983223"), PTYPE_IGNORE},
+	{"MDCX4", MDCX4, MDCX4_RET("18983216"), 99},
+	{"MDCX4_PT1", MDCX4_PT1, MDCX4_RET("18983217"), 99},
+	{"MDCX4_PT2", MDCX4_PT2, MDCX4_RET("18983218"), 99},
+	{"MDCX4_PT3", MDCX4_PT3, MDCX4_RET("18983219"), 99},
+	{"MDCX4_PT4", MDCX4_PT4, MDCX4_RET("18983220"), 99},
+	{"MDCX4_SO", MDCX4_SO, MDCX4_RET("18983221"), 99},
+	{"MDCX4_RO", MDCX4_RO, MDCX4_RO_RET("18983222"), PTYPE_IGNORE},
 	{"DLCX", DLCX, DLCX_RET, PTYPE_IGNORE},
 	{"CRCX_ZYN", CRCX_ZYN, CRCX_ZYN_RET, 97},
 	{"EMPTY", EMPTY, EMPTY_RET},
@@ -614,6 +594,29 @@ static struct msgb *create_msg(const char *str, const char *conn_id)
 	return msg;
 }

+static char last_endpoint[MGCP_ENDPOINT_MAXLEN];
+
+static int mgcp_test_policy_cb(struct mgcp_endpoint *endp,
+			       int state, const char *transaction_id)
+{
+	unsigned int i;
+	struct mgcp_trunk *trunk;
+
+	fprintf(stderr, "Policy CB got state %d on endpoint %s\n",
+		state, endp->name);
+
+	trunk = endp->trunk;
+	last_endpoint[0] = '\0';
+	for (i = 0; i < trunk->number_endpoints; i++) {
+		if (strcmp(endp->name, trunk->endpoints[i]->name) == 0)
+			osmo_strlcpy(last_endpoint, trunk->endpoints[i]->name,
+				     sizeof(last_endpoint));
+	}
+
+	return MGCP_POLICY_CONT;
+}
+
+#define MGCP_DUMMY_LOAD 0x23
 static int dummy_packets = 0;
 /* override and forward */
 ssize_t sendto(int sockfd, const void *buf, size_t len, int flags,
@@ -623,18 +626,13 @@ ssize_t sendto(int sockfd, const void *buf, size_t len, int flags,
 	    htonl(((struct sockaddr_in *)dest_addr)->sin_addr.s_addr);
 	int dest_port = htons(((struct sockaddr_in *)dest_addr)->sin_port);

-	if (len == sizeof(rtp_dummy_payload)
-	    && memcmp(buf, rtp_dummy_payload, sizeof(rtp_dummy_payload)) == 0) {
+	if (len == 1 && ((const char *)buf)[0] == MGCP_DUMMY_LOAD) {
 		fprintf(stderr,
 			"Dummy packet to 0x%08x:%d, msg length %zu\n%s\n\n",
 			dest_host, dest_port, len, osmo_hexdump(buf, len));
 		dummy_packets += 1;
 	}

-	/* Make sure address+port are valid */
-	OSMO_ASSERT(dest_host);
-	OSMO_ASSERT(dest_port);
-
 	return len;
 }

@@ -770,13 +768,13 @@ static void test_messages(void)
 	struct mgcp_conn_rtp *conn = NULL;
 	char last_conn_id[256];
 	int rc;
-	char *last_endpoint = mgcp_debug_get_last_endpoint_name();

 	cfg = mgcp_config_alloc();
 	trunk = mgcp_trunk_by_num(cfg, MGCP_TRUNK_VIRTUAL, MGCP_VIRT_TRUNK_ID);

 	trunk->v.vty_number_endpoints = 64;
        mgcp_trunk_equip(trunk);
+	cfg->policy_cb = mgcp_test_policy_cb;

 	memset(last_conn_id, 0, sizeof(last_conn_id));

@@ -788,6 +786,7 @@ static void test_messages(void)
 		printf("\n================================================\n");
 		printf("Testing %s\n", t->name);

+		last_endpoint[0] = '\0';
 		dummy_packets = 0;

 		osmo_talloc_replace_string(cfg, &trunk->audio_fmtp_extra,
@@ -868,7 +867,7 @@ static void test_messages(void)
 					printf("Connection mode not set\n");

 				OSMO_ASSERT(conn->end.output_enabled
-					    == !!(conn->conn->mode & MGCP_CONN_SEND_ONLY));
+					    == (conn->conn->mode & MGCP_CONN_SEND_ONLY ? 1 : 0));

 				conn->conn->mode |= CONN_UNMODIFIED;

@@ -960,7 +959,7 @@ static void test_retransmission(void)
 static int rqnt_cb(struct mgcp_endpoint *endp, char _tone)
 {
 	ptrdiff_t tone = _tone;
-	endp->trunk->cfg->data = (void *)tone;
+	endp->cfg->data = (void *)tone;
 	return 0;
 }

@@ -1042,19 +1041,20 @@ static void test_packet_loss_calc(void)
 	int i;
 	struct mgcp_endpoint endp;
 	struct mgcp_endpoint *endpoints[1];
-	struct mgcp_config *cfg;
-	struct mgcp_trunk *trunk;
+	struct mgcp_config cfg = {0};
+	struct mgcp_trunk trunk;

 	printf("Testing packet loss calculation.\n");

 	memset(&endp, 0, sizeof(endp));
-	cfg = mgcp_config_alloc();
-	trunk = mgcp_trunk_alloc(cfg, MGCP_TRUNK_VIRTUAL, MGCP_VIRT_TRUNK_ID);
+	memset(&trunk, 0, sizeof(trunk));
+
+	endp.cfg = &cfg;
 	endp.type = &ep_typeset.rtp;
-	trunk->v.vty_number_endpoints = 1;
-	trunk->endpoints = endpoints;
-	trunk->endpoints[0] = &endp;
-	endp.trunk = trunk;
+	trunk.v.vty_number_endpoints = 1;
+	trunk.endpoints = endpoints;
+	trunk.endpoints[0] = &endp;
+	endp.trunk = &trunk;
 	INIT_LLIST_HEAD(&endp.conns);

 	for (i = 0; i < ARRAY_SIZE(pl_test_dat); ++i) {
@@ -1071,7 +1071,7 @@ static void test_packet_loss_calc(void)
 				    "test-connection");
 		conn = mgcp_conn_get_rtp(&endp, _conn->id);
 		state = &conn->state;
-		packets_rx = rate_ctr_group_get_ctr(conn->rate_ctr_group, RTP_PACKETS_RX_CTR);
+		packets_rx = &conn->rate_ctr_group->ctr[RTP_PACKETS_RX_CTR];

 		state->stats.initialized = 1;
 		state->stats.base_seq = pl_test_dat[i].base_seq;
@@ -1092,8 +1092,6 @@ static void test_packet_loss_calc(void)
 		mgcp_conn_free_all(&endp);
 	}

-	talloc_free(trunk);
-	talloc_free(cfg);
 }

 int mgcp_parse_stats(struct msgb *msg, uint32_t *ps, uint32_t *os,
@@ -1260,25 +1258,21 @@ struct rtp_packet_info test_rtp_packets1[] = {
 	/* RTP: SeqNo=1002, TS=160320 */
 	{2.040000, 20, "\x80\x62\x03\xEA\x00\x02\x72\x40\x50\x60\x70\x80"
 	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
-	/* RTP: SeqNo=1003, TS=180320, Marker */
-	{2.060000, 20, "\x80\xE2\x03\xEB\x00\x02\xC0\x60\x50\x60\x70\x80"
-	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
-	 /* RTP: SeqNo=1004, TS=180480 */
-	{2.080000, 20, "\x80\x62\x03\xEC\x00\x02\xC1\x00\x50\x60\x70\x80"
-	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
-	 /* RTP: SeqNo=1005, TS=180480, 10ms too late */
-	{2.110000, 20, "\x80\x62\x03\xED\x00\x02\xC1\xA0\x50\x60\x70\x80"
-	 "\x01\x23\x45\x67\x89\xAB\xCD\xEF"},
 };

+void mgcp_patch_and_count(struct mgcp_endpoint *endp,
+			  struct mgcp_rtp_state *state,
+			  struct mgcp_rtp_end *rtp_end,
+			  struct osmo_sockaddr *addr, struct msgb *msg);
+
 static void test_packet_error_detection(int patch_ssrc, int patch_ts)
 {
 	int i;

-	struct mgcp_trunk *trunk;
+	struct mgcp_trunk trunk;
 	struct mgcp_endpoint endp;
 	struct mgcp_endpoint *endpoints[1];
-	struct mgcp_config *cfg;
+	struct mgcp_config cfg = {0};
 	struct mgcp_rtp_state state;
 	struct mgcp_rtp_end *rtp;
 	struct osmo_sockaddr addr = { 0 };
@@ -1296,8 +1290,7 @@ static void test_packet_error_detection(int patch_ssrc, int patch_ts)
 	       patch_ssrc ? ", patch SSRC" : "",
 	       patch_ts ? ", patch timestamps" : "");

-	cfg = mgcp_config_alloc();
-	trunk = mgcp_trunk_alloc(cfg, MGCP_TRUNK_VIRTUAL, MGCP_VIRT_TRUNK_ID);
+	memset(&trunk, 0, sizeof(trunk));
 	memset(&endp, 0, sizeof(endp));
 	memset(&state, 0, sizeof(state));

@@ -1306,15 +1299,16 @@ static void test_packet_error_detection(int patch_ssrc, int patch_ts)
 	state.in_stream.err_ts_ctr = &test_ctr_in;
 	state.out_stream.err_ts_ctr = &test_ctr_out;

+	endp.cfg = &cfg;
 	endp.type = &ep_typeset.rtp;

-	trunk->v.vty_number_endpoints = 1;
-	trunk->endpoints = endpoints;
-	trunk->endpoints[0] = &endp;
-	trunk->force_constant_ssrc = patch_ssrc;
-	trunk->force_aligned_timing = patch_ts;
+	trunk.v.vty_number_endpoints = 1;
+	trunk.endpoints = endpoints;
+	trunk.endpoints[0] = &endp;
+	trunk.force_constant_ssrc = patch_ssrc;
+	trunk.force_aligned_timing = patch_ts;

-	endp.trunk = trunk;
+	endp.trunk = &trunk;

 	INIT_LLIST_HEAD(&endp.conns);
 	_conn = mgcp_conn_alloc(NULL, &endp, MGCP_CONN_TYPE_RTP,
@@ -1373,8 +1367,6 @@ static void test_packet_error_detection(int patch_ssrc, int patch_ts)

 	force_monotonic_time_us = -1;
 	mgcp_conn_free_all(&endp);
-	talloc_free(trunk);
-	talloc_free(cfg);
 }

 static void test_multilple_codec(void)
@@ -1386,7 +1378,6 @@ static void test_multilple_codec(void)
 	struct in_addr addr;
 	struct mgcp_conn_rtp *conn = NULL;
 	char conn_id[256];
-	char *last_endpoint = mgcp_debug_get_last_endpoint_name();

 	printf("Testing multiple payload types\n");

@@ -1394,6 +1385,7 @@ static void test_multilple_codec(void)
 	trunk = mgcp_trunk_by_num(cfg, MGCP_TRUNK_VIRTUAL, MGCP_VIRT_TRUNK_ID);
 	trunk->v.vty_number_endpoints = 64;
        mgcp_trunk_equip(trunk);
+	cfg->policy_cb = mgcp_test_policy_cb;

 	/* Allocate endpoint 1@mgw with two codecs */
 	last_endpoint[0] = '\0';
@@ -1555,24 +1547,24 @@ static void test_no_cycle(void)

 	OSMO_ASSERT(conn->state.stats.initialized == 0);

-	mgcp_rtp_annex_count(endp, &conn->state, 0, 0, 2342, false);
+	mgcp_rtp_annex_count(endp, &conn->state, 0, 0, 2342);
 	OSMO_ASSERT(conn->state.stats.initialized == 1);
 	OSMO_ASSERT(conn->state.stats.cycles == 0);
 	OSMO_ASSERT(conn->state.stats.max_seq == 0);

-	mgcp_rtp_annex_count(endp, &conn->state, 1, 0, 2342, false);
+	mgcp_rtp_annex_count(endp, &conn->state, 1, 0, 2342);
 	OSMO_ASSERT(conn->state.stats.initialized == 1);
 	OSMO_ASSERT(conn->state.stats.cycles == 0);
 	OSMO_ASSERT(conn->state.stats.max_seq == 1);

 	/* now jump.. */
-	mgcp_rtp_annex_count(endp, &conn->state, UINT16_MAX, 0, 2342, false);
+	mgcp_rtp_annex_count(endp, &conn->state, UINT16_MAX, 0, 2342);
 	OSMO_ASSERT(conn->state.stats.initialized == 1);
 	OSMO_ASSERT(conn->state.stats.cycles == 0);
 	OSMO_ASSERT(conn->state.stats.max_seq == UINT16_MAX);

 	/* and wrap */
-	mgcp_rtp_annex_count(endp, &conn->state, 0, 0, 2342, false);
+	mgcp_rtp_annex_count(endp, &conn->state, 0, 0, 2342);
 	OSMO_ASSERT(conn->state.stats.initialized == 1);
 	OSMO_ASSERT(conn->state.stats.cycles == UINT16_MAX + 1);
 	OSMO_ASSERT(conn->state.stats.max_seq == 0);
@@ -1595,6 +1587,8 @@ static void test_no_name(void)
 	trunk->audio_send_name = 0;
        mgcp_trunk_equip(trunk);

+	cfg->policy_cb = mgcp_test_policy_cb;
+
 	inp = create_msg(CRCX, NULL);
 	msg = mgcp_handle_message(cfg, inp);

@@ -1896,13 +1890,16 @@ static const struct testcase_mgcp_codec_pt_translate test_mgcp_codec_pt_translat
 		.codecs = {
 			{
 				{ 111, "AMR/8000", &amr_param_octet_aligned_true, },
+				{ 112, "AMR/8000", &amr_param_octet_aligned_false, },
 			},
 			{
 				{ 122, "AMR/8000", &amr_param_octet_aligned_false, },
+				{ 121, "AMR/8000", &amr_param_octet_aligned_true, },
 			},
 		},
 		.expect = {
-			{ .payload_type_map = {111, 122}, },
+			{ .payload_type_map = {111, 121}, },
+			{ .payload_type_map = {112, 122} },
 			{ .end = true },
 		},
 	},
@@ -1911,13 +1908,15 @@ static const struct testcase_mgcp_codec_pt_translate test_mgcp_codec_pt_translat
 		.codecs = {
 			{
 				{ 111, "AMR/8000", &amr_param_octet_aligned_true, },
+				{ 112, "AMR/8000", &amr_param_octet_aligned_false, },
 			},
 			{
 				{ 122, "AMR/8000", &amr_param_octet_aligned_unset, },
 			},
 		},
 		.expect = {
-			{ .payload_type_map = {111, 122}, },
+			{ .payload_type_map = {111, -EINVAL}, },
+			{ .payload_type_map = {112, 122} },
 			{ .end = true },
 		},
 	},
@@ -1926,13 +1925,15 @@ static const struct testcase_mgcp_codec_pt_translate test_mgcp_codec_pt_translat
 		.codecs = {
 			{
 				{ 111, "AMR/8000", &amr_param_octet_aligned_true, },
+				{ 112, "AMR/8000", &amr_param_octet_aligned_false, },
 			},
 			{
 				{ 122, "AMR/8000", NULL, },
 			},
 		},
 		.expect = {
-			{ .payload_type_map = {111, 122}, },
+			{ .payload_type_map = {111, -EINVAL}, },
+			{ .payload_type_map = {112, 122} },
 			{ .end = true },
 		},
 	},
@@ -2120,95 +2121,46 @@ void test_conn_id_matching()

 void test_e1_trunk_nr_from_epname()
 {
-	unsigned int trunk_nr;
-	int rc;
+	int trunk_nr;

 	/* Note: e1_trunk_nr_from_epname does not check the text
 	 * after the E1 trunk number, after the delimiter
 	 * character "/" arbitrary text may follow. */
-	rc = e1_trunk_nr_from_epname(&trunk_nr, "ds/e1-0/s-1/su16-0");
+	trunk_nr = e1_trunk_nr_from_epname("ds/e1-0/s-1/su16-0");
 	OSMO_ASSERT(trunk_nr == 0);
-	OSMO_ASSERT(rc == 0);
-	rc = e1_trunk_nr_from_epname(&trunk_nr, "ds/e1-1/s-1/su16-0");
+	trunk_nr = e1_trunk_nr_from_epname("ds/e1-1/s-1/su16-0");
 	OSMO_ASSERT(trunk_nr == 1);
-	OSMO_ASSERT(rc == 0);
-	rc = e1_trunk_nr_from_epname(&trunk_nr, "ds/e1-2/s-2/su16-0");
+	trunk_nr = e1_trunk_nr_from_epname("ds/e1-2/s-2/su16-0");
 	OSMO_ASSERT(trunk_nr == 2);
-	OSMO_ASSERT(rc == 0);
-	rc = e1_trunk_nr_from_epname(&trunk_nr, "ds/e1-3/s-23/su32-0");
+	trunk_nr = e1_trunk_nr_from_epname("ds/e1-3/s-23/su32-0");
 	OSMO_ASSERT(trunk_nr == 3);
-	OSMO_ASSERT(rc == 0);
-	rc = e1_trunk_nr_from_epname(&trunk_nr, "ds/e1-3/xxxxxxx");
+	trunk_nr = e1_trunk_nr_from_epname("ds/e1-3/xxxxxxx");
 	OSMO_ASSERT(trunk_nr == 3);
-	OSMO_ASSERT(rc == 0);
-	rc = e1_trunk_nr_from_epname(&trunk_nr, "ds/e1-24/s-1/su16-0");
+	trunk_nr = e1_trunk_nr_from_epname("ds/e1-24/s-1/su16-0");
 	OSMO_ASSERT(trunk_nr == 24);
-	OSMO_ASSERT(rc == 0);
-	rc = e1_trunk_nr_from_epname(&trunk_nr, "ds/e1-64/s-1/su16-0");
+	trunk_nr = e1_trunk_nr_from_epname("ds/e1-64/s-1/su16-0");
 	OSMO_ASSERT(trunk_nr == 64);
-	OSMO_ASSERT(rc == 0);

 	/* The following endpoint strings should fail, either the
 	 * trunk number exceeds the valid range or the trunk prefix
 	 * is wrong. Also when the delimiter character "/" at the
 	 * end of the trunk is wrong the parsing should fail. */
-	rc = e1_trunk_nr_from_epname(&trunk_nr, "ds/e1-65/s-1/su16-0");
-	OSMO_ASSERT(rc == -EINVAL);
-	rc = e1_trunk_nr_from_epname(&trunk_nr, "ds/e1--1/s-1/su16-0");
-	OSMO_ASSERT(rc == -EINVAL);
-	rc = e1_trunk_nr_from_epname(&trunk_nr, "xxxxxx4zyz");
-	OSMO_ASSERT(rc == -EINVAL);
-	rc = e1_trunk_nr_from_epname(&trunk_nr, "ds/e1+2/s-1/su16-0");
-	OSMO_ASSERT(rc == -EINVAL);
-	rc = e1_trunk_nr_from_epname(&trunk_nr, "ds/e2-24/s-1/su16-0");
-	OSMO_ASSERT(rc == -EINVAL);
-	rc = e1_trunk_nr_from_epname(&trunk_nr, "ds/e1-24s-1/su16-0");
-	OSMO_ASSERT(rc == -EINVAL);
+	trunk_nr = e1_trunk_nr_from_epname("ds/e1-65/s-1/su16-0");
+	OSMO_ASSERT(trunk_nr == -EINVAL);
+	trunk_nr = e1_trunk_nr_from_epname("ds/e1--1/s-1/su16-0");
+	OSMO_ASSERT(trunk_nr == -EINVAL);
+	trunk_nr = e1_trunk_nr_from_epname("xxxxxx4zyz");
+	OSMO_ASSERT(trunk_nr == -EINVAL);
+	trunk_nr = e1_trunk_nr_from_epname("ds/e1+2/s-1/su16-0");
+	OSMO_ASSERT(trunk_nr == -EINVAL);
+	trunk_nr = e1_trunk_nr_from_epname("ds/e2-24/s-1/su16-0");
+	OSMO_ASSERT(trunk_nr == -EINVAL);
+	trunk_nr = e1_trunk_nr_from_epname("ds/e1-24s-1/su16-0");
+	OSMO_ASSERT(trunk_nr == -EINVAL);

 	return;
 }

-void test_mgcp_is_rtp_dummy_payload()
-{
-	/* realistic rtp packet */
-	static const char rtp_payload[] =
-	    { 0x80, 0x03, 0xca, 0xd7, 0x62, 0x12, 0x75, 0xc4, 0x43, 0x4b, 0x3e,
-	      0x72, 0xd2, 0x57, 0x7a, 0x1c, 0xda, 0x50, 0x00, 0x49, 0x24, 0x92,
-	      0x49, 0x24, 0x50, 0x00, 0x49, 0x24, 0x92, 0x49, 0x24, 0x50, 0x00,
-	      0x49, 0x24, 0x92, 0x49, 0x24, 0x50, 0x00, 0x49, 0x23, 0x92, 0x49,
-	      0x24 };
-
-	struct msgb *msg_dummy = msgb_alloc(RTP_BUF_SIZE, "RTP-msg_dummy");
-	struct msgb *msg_rtp = msgb_alloc(RTP_BUF_SIZE, "RTP-msg_rtp");
-	struct msgb *msg_dummy_rtp =
-	    msgb_alloc(RTP_BUF_SIZE, "RTP-msg_dummy_rtp");
-
-	uint8_t *buf;
-
-	/* Dummy RTP packet */
-	buf = msgb_put(msg_dummy, ARRAY_SIZE(rtp_dummy_payload));
-	memcpy(buf, rtp_dummy_payload, ARRAY_SIZE(rtp_dummy_payload));
-
-	/* Normal RTP packet */
-	buf = msgb_put(msg_rtp, ARRAY_SIZE(rtp_payload));
-	memcpy(buf, rtp_payload, ARRAY_SIZE(rtp_payload));
-
-	/* Dummy RTP packet with normal RTP packet attached, this must not be
-	 * recognized as Dummy RTP packet */
-	buf = msgb_put(msg_dummy_rtp, ARRAY_SIZE(rtp_dummy_payload));
-	memcpy(buf, rtp_dummy_payload, ARRAY_SIZE(rtp_dummy_payload));
-	buf = msgb_put(msg_dummy_rtp, ARRAY_SIZE(rtp_payload));
-	memcpy(buf, rtp_payload, ARRAY_SIZE(rtp_payload));
-
-	OSMO_ASSERT(mgcp_is_rtp_dummy_payload(msg_dummy) == true);
-	OSMO_ASSERT(mgcp_is_rtp_dummy_payload(msg_rtp) == false);
-	OSMO_ASSERT(mgcp_is_rtp_dummy_payload(msg_dummy_rtp) == false);
-
-	msgb_free(msg_dummy);
-	msgb_free(msg_rtp);
-	msgb_free(msg_dummy_rtp);
-}
-
 int main(int argc, char **argv)
 {
 	void *ctx = talloc_named_const(NULL, 0, "mgcp_test");
@@ -2235,7 +2187,6 @@ int main(int argc, char **argv)
 	test_mgcp_codec_pt_translate();
 	test_conn_id_matching();
 	test_e1_trunk_nr_from_epname();
-	test_mgcp_is_rtp_dummy_payload();

 	OSMO_ASSERT(talloc_total_size(msgb_ctx) == 0);
 	OSMO_ASSERT(talloc_total_blocks(msgb_ctx) == 1);
--- a/tests/mgcp/mgcp_test.ok
+++ b/tests/mgcp/mgcp_test.ok
@@ -97,7 +97,7 @@ Response matches our expectations.
 Dummy packets: 2

 ================================================
-Testing MDCX4_ADDR000
+Testing MDCX4
 creating message from statically defined input:
 ---------8<---------
 MDCX 18983216 1@mgw MGCP 1.0
@@ -113,29 +113,6 @@ m=audio 4441 RTP/AVP 99
 m=audio 4441 RTP/AVP 99
 a=rtpmap:99 AMR/8000
 a=ptime:40
-
---------8<---------
-checking response:
-using message as statically defined for comparison
-Response matches our expectations.
-(response does not contain a connection id)
-
-================================================
-Testing MDCX4
-creating message from statically defined input:
---------8<---------
-MDCX 18983217 1@mgw MGCP 1.0
-M: sendrecv
-C: 2
-I: %s
-L: p:20, a:AMR, nt:IN
-
-v=0
-o=- %s 23 IN IP4 5.6.7.8
-c=IN IP4 5.6.7.8
-t=0 0
-m=audio 4441 RTP/AVP 99
-a=rtpmap:99 AMR/8000

 ---------8<---------
 checking response:
@@ -147,14 +124,14 @@ Dummy packets: 2
 ================================================
 Testing MDCX4_PT1
 creating message from statically defined input:
-creating message from statically defined input:
+---------8<---------
 MDCX 18983217 1@mgw MGCP 1.0
 M: SENDRECV
 C: 2
 I: %s
 L: p:20-40, a:AMR, nt:IN
-L: p:20-40, a:AMR, nt:IN
-
+
+v=0
 o=- %s 23 IN IP4 0.0.0.0
 c=IN IP4 0.0.0.0
 t=0 0
@@ -171,14 +148,14 @@ Dummy packets: 2

 ================================================
 Testing MDCX4_PT2
-Testing MDCX4_PT2
+creating message from statically defined input:
 ---------8<---------
 MDCX 18983218 1@mgw MGCP 1.0
 M: sendrecv
 C: 2
 I: %s
-I: %s
-L: p:20-20, a:AMR, nt:IN
+L: p:20-20, a:AMR, nt:IN
+
 v=0
 o=- %s 23 IN IP4 0.0.0.0
 c=IN IP4 0.0.0.0
@@ -195,14 +172,14 @@ Dummy packets: 2
 Dummy packets: 2

 ================================================
-================================================
+Testing MDCX4_PT3
 creating message from statically defined input:
 ---------8<---------
 MDCX 18983219 1@mgw MGCP 1.0
 M: sendrecv
 C: 2
-C: 2
-I: %s
+I: %s
+L: a:AMR, nt:IN

 v=0
 o=- %s 23 IN IP4 0.0.0.0
@@ -219,14 +196,14 @@ Dummy packets: 2
 (response contains a connection id)
 Dummy packets: 2

-
+================================================
 Testing MDCX4_PT4
 creating message from statically defined input:
 ---------8<---------
 MDCX 18983220 1@mgw MGCP 1.0
 m: sendrecv
-m: sendrecv
-c: 2
+c: 2
+i: %s
 l: A:amr, NT:IN

 v=0
@@ -243,14 +220,14 @@ Dummy packets: 2
 Response matches our expectations.
 (response contains a connection id)
 Dummy packets: 2
-Dummy packets: 2
+
 ================================================
 Testing MDCX4_SO
 creating message from statically defined input:
 ---------8<---------
 MDCX 18983221 1@mgw MGCP 1.0
-MDCX 18983222 1@mgw MGCP 1.0
-M: sendonly
+M: sendonly
+C: 2
 I: %s
 L: p:20, a:AMR, nt:IN

@@ -266,7 +243,7 @@ Response matches our expectations.
 checking response:
 using message with patched conn_id for comparison
 Response matches our expectations.
-Response matches our expectations.
+(response contains a connection id)

 ================================================
 Testing MDCX4_RO
@@ -464,6 +441,7 @@ checking response:
 (response does not contain a connection id)

 ================================================
+Testing CRCX
 creating message from statically defined input:
 ---------8<---------
 CRCX 2 6@mgw MGCP 1.0
@@ -492,7 +470,7 @@ Dummy packets: 2
 m=audio 5904 RTP/AVP 97
 a=rtpmap:97 GSM-EFR/8000
 a=ptime:40
-a=ptime:40
+
 ---------8<---------
 checking response:
 using message with patched conn_id for comparison
@@ -792,15 +770,6 @@ Stats: Jitter = 0, Transit = -144000
 In TS: 36728, dTS: 160, Seq: 24
 Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
 Stats: Jitter = 22, Transit = -32888
-Stats: Jitter = 22, Transit = -32888
-In TS: 36888, dTS: 160, Seq: 25
-Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
-Stats: Jitter = 21, Transit = -32888
-In TS: 160000, dTS: 0, Seq: 1000
-Out TS change: 12000, dTS: 12000, Seq change: 1, TS Err change: in +0, out +0
-Stats: Jitter = 0, Transit = -144000
-In TS: 160160, dTS: 160, Seq: 1001
-Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
 In TS: 36888, dTS: 160, Seq: 25
 Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
 Stats: Jitter = 21, Transit = -32888
@@ -895,15 +864,6 @@ Stats: Jitter = 0, Transit = -144000
 Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
 Stats: Jitter = 22, Transit = -32888
 In TS: 36888, dTS: 160, Seq: 25
-In TS: 36888, dTS: 160, Seq: 25
-Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
-Stats: Jitter = 21, Transit = -32888
-Output SSRC changed to 50607080
-In TS: 160000, dTS: 0, Seq: 1000
-Out TS change: 123112, dTS: 160, Seq change: 975, TS Err change: in +0, out +0
-Stats: Jitter = 0, Transit = -144000
-In TS: 160160, dTS: 160, Seq: 1001
-Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
 Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
 Stats: Jitter = 21, Transit = -32888
 Output SSRC changed to 50607080
@@ -998,15 +958,6 @@ Stats: Jitter = 0, Transit = -144000
 Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
 Stats: Jitter = 22, Transit = -32888
 In TS: 36888, dTS: 160, Seq: 25
-In TS: 36888, dTS: 160, Seq: 25
-Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
-Stats: Jitter = 21, Transit = -32888
-Output SSRC changed to 50607080
-In TS: 160000, dTS: 0, Seq: 1000
-Out TS change: 123112, dTS: 160, Seq change: 975, TS Err change: in +0, out +0
-Stats: Jitter = 0, Transit = -144000
-In TS: 160160, dTS: 160, Seq: 1001
-Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
 Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
 Stats: Jitter = 21, Transit = -32888
 Output SSRC changed to 50607080
@@ -1099,15 +1050,6 @@ Stats: Jitter = 0, Transit = -144000
 In TS: 36728, dTS: 160, Seq: 24
 Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
 Stats: Jitter = 22, Transit = -32888
-Stats: Jitter = 22, Transit = -32888
-In TS: 36888, dTS: 160, Seq: 25
-Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
-Stats: Jitter = 21, Transit = -32888
-In TS: 160000, dTS: 0, Seq: 1000
-Out TS change: 12000, dTS: 12000, Seq change: 1, TS Err change: in +0, out +0
-Stats: Jitter = 0, Transit = -144000
-In TS: 160160, dTS: 160, Seq: 1001
-Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
 In TS: 36888, dTS: 160, Seq: 25
 Out TS change: 160, dTS: 160, Seq change: 1, TS Err change: in +0, out +0
 Stats: Jitter = 21, Transit = -32888
@@ -1347,24 +1289,32 @@ Testing mgcp_codec_pt_translate()
 - mgcp_codec_pt_translate(conn0, conn1, 0) -> -22
 - mgcp_codec_pt_translate(conn0, conn1, 111) -> -22
 #4: conn1 has no codecs
+ - add codecs on conn0:
    0: 112 AMR/8000/1 octet-aligned=1  -> rc=0
    1:   0 PCMU/8000/1  -> rc=0
-    0: 112 AMR/8000/1 octet-aligned=1  -> rc=0
-    1:   0 PCMU/8000/1  -> rc=0
+    2: 111 GSM-HR-08/8000/1  -> rc=0
+ - add codecs on conn1:
+    (none)
+ - mgcp_codec_pt_translate(conn0, conn1, 112) -> -22
+ - mgcp_codec_pt_translate(conn0, conn1, 0) -> -22
 - mgcp_codec_pt_translate(conn0, conn1, 111) -> -22
 #5: test AMR with differing octet-aligned settings
 - add codecs on conn0:
+    0: 111 AMR/8000 octet-aligned=1  -> rc=0
    1: 112 AMR/8000 octet-aligned=0  -> rc=0
 - add codecs on conn1:
- - mgcp_codec_pt_translate(conn0, conn1, 111) -> -22
-#5: test AMR with differing octet-aligned settings
+    0: 122 AMR/8000 octet-aligned=0  -> rc=0
+    1: 121 AMR/8000 octet-aligned=1  -> rc=0
+ - mgcp_codec_pt_translate(conn0, conn1, 111) -> 121
 - mgcp_codec_pt_translate(conn1, conn0, 121) -> 111
 - mgcp_codec_pt_translate(conn0, conn1, 112) -> 122
 - mgcp_codec_pt_translate(conn1, conn0, 122) -> 112
+#6: test AMR with missing octet-aligned settings (defaults to 0)
 - add codecs on conn0:
    0: 111 AMR/8000 octet-aligned=1  -> rc=0
- - mgcp_codec_pt_translate(conn1, conn0, 122) -> 111
-#6: test AMR with missing octet-aligned settings (defaults to 0)
+    1: 112 AMR/8000 octet-aligned=0  -> rc=0
+ - add codecs on conn1:
+    0: 122 AMR/8000 octet-aligned=unset  -> rc=0
 - mgcp_codec_pt_translate(conn0, conn1, 111) -> -22
 - mgcp_codec_pt_translate(conn0, conn1, 112) -> 122
 - mgcp_codec_pt_translate(conn1, conn0, 122) -> 112
--- a/tests/mgcp_client/Makefile.am
+++ b/tests/mgcp_client/Makefile.am
@@ -22,7 +22,7 @@ EXTRA_DIST = \
 	mgcp_client_test.err \
 	$(NULL)

-check_PROGRAMS = \
+noinst_PROGRAMS = \
 	mgcp_client_test \
 	$(NULL)

--- a/tests/mgcp_client/mgcp_client_test.c
+++ b/tests/mgcp_client/mgcp_client_test.c
@@ -689,10 +689,9 @@ int main(int argc, char **argv)
 	ctx = talloc_named_const(NULL, 1, "mgcp_client_test");
 	msgb_talloc_ctx_init(ctx, 0);
 	osmo_init_logging2(ctx, &log_info);
-	log_set_print_filename2(osmo_stderr_target, LOG_FILENAME_NONE);
+	log_set_print_filename(osmo_stderr_target, 0);
 	log_set_print_timestamp(osmo_stderr_target, 0);
 	log_set_use_color(osmo_stderr_target, 0);
-	log_set_print_category_hex(osmo_stderr_target, 0);
 	log_set_print_category(osmo_stderr_target, 1);

 	log_set_category_filter(osmo_stderr_target, DLMGCP, 1, LOGL_DEBUG);
--- a/tests/mgcp_client/mgcp_client_test.err
+++ b/tests/mgcp_client/mgcp_client_test.err
@@ -1,19 +1,18 @@
-DLMGCP MGW(mgw) MGCP client: using endpoint domain '@mgw'
-DLMGCP MGW(mgw) Message buffer to small, can not generate MGCP message (SDP)
+DLMGCP MGCP client: using endpoint domain '@mgw'
+DLMGCP message buffer to small, can not generate MGCP message

 test_mgcp_client_cancel():
-DLMGCP MGW(mgw) MGCP client: using endpoint domain '@mgw'
+DLMGCP MGCP client: using endpoint domain '@mgw'
 - composed msg with trans_id=1
 - not in queue yet, cannot cancel yet
-DLMGCP MGW(mgw) Cannot cancel, no such transaction: 1
+DLMGCP Cannot cancel, no such transaction: 1
 - enqueue
 - cancel succeeds
-DLMGCP MGW(mgw) Canceled transaction 1
+DLMGCP Canceled transaction 1
 - late response gets discarded
-DLMGCP MGW(mgw) MGCP client: Rx 200 1 OK
-DLMGCP MGW(mgw) Cannot find matching MGCP transaction for trans_id 1
+DLMGCP Cannot find matching MGCP transaction for trans_id 1
 - canceling again does nothing
-DLMGCP MGW(mgw) Cannot cancel, no such transaction: 1
+DLMGCP Cannot cancel, no such transaction: 1
 test_mgcp_client_cancel() done

 test_sdp_section_start() test [0]:
@@ -130,9 +129,9 @@ DLMGCP ptmap contains illegal mapping: codec=113 maps to pt=2
 DLMGCP ptmap contains illegal mapping: codec=0 maps to pt=100
 DLMGCP ptmap contains illegal mapping: codec=113 maps to pt=2
 DLMGCP ptmap contains illegal mapping: codec=0 maps to pt=100
-DLMGCP MGW(mgw) MGCP client: using endpoint domain '@mgw'
-DLMGCP MGW(mgw) Cannot compose MGCP e1-endpoint name (ds/e1-15/s-1/su128-0@mgw), rate(128)/offset(0) combination is invalid!
-DLMGCP MGW(mgw) Cannot compose MGCP e1-endpoint name (ds/e1-15/s-1/su8-16@mgw), rate(8)/offset(16) combination is invalid!
-DLMGCP MGW(mgw) Cannot compose MGCP e1-endpoint name (ds/e1-15/s-0/su8-2@mgw), E1-timeslot number (0) is invalid!
-DLMGCP MGW(mgw) Cannot compose MGCP e1-endpoint name (ds/e1-15/s-64/su8-2@mgw), E1-timeslot number (64) is invalid!
+DLMGCP MGCP client: using endpoint domain '@mgw'
+DLMGCP Cannot compose MGCP e1-endpoint name (ds/e1-15/s-1/su128-0@mgw), rate(128)/offset(0) combination is invalid!
+DLMGCP Cannot compose MGCP e1-endpoint name (ds/e1-15/s-1/su8-16@mgw), rate(8)/offset(16) combination is invalid!
+DLMGCP Cannot compose MGCP e1-endpoint name (ds/e1-15/s-0/su8-2@mgw), E1-timeslot number (0) is invalid!
+DLMGCP Cannot compose MGCP e1-endpoint name (ds/e1-15/s-64/su8-2@mgw), E1-timeslot number (64) is invalid!
 Done
Author	SHA1	Message	Date
Harald Welte	8e22379d7d	WIP: simcom2rtp bridge, interfacing SIMcom audio over USB to RTP Change-Id: Id3f8633fae8881c2168d61732371e65eaff140ad	2020-10-19 13:31:40 +02:00
Harald Welte	1bc597c752	use osmo_fd_setup() whenever applicable Change-Id: I1586e855d37670af2602fc26b5d1fc72a32d1929	2020-10-19 13:31:40 +02:00