Inactive connection cleanup (disabled by default)

Add a watchdog timer to connections, and close these connections when the watchdog timer expires. Kick the watchdog whenever RTP messages or the relevant MGCP messages arrive. This feature is disabled by default, as it is incompatible with LCLS (connections in LCLS state appear to be inactive). Enable it with the new "conn-timeout" VTY setting. In general, this feature can be used to work around interoperability problems causing connections to stay open forever, and slowly exhausting all available ports. This happened for various reasons already. MDCX is the only relevant MGCP message: - CRCX creates the conn and timer - DLCX deletes the conn and timer - MDCX is the only remaining supported MGCP message that indicates a CI - Can't easily generically parse a CI for all MGCP messages, parsing is done in handle_modify_con(). Related: OS#3429 Change-Id: I18886052e090466f73829133c24f011806cc1fe0
2025-10-23 08:12:01 +00:00 · 2019-01-31 16:37:01 +01:00
45 changed files with 1189 additions and 3550 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -2,13 +2,20 @@ debian/*.log
 *.o
 *.lo
 *.a
-*.la
 .deps
 Makefile
 Makefile.in
 bscconfig.h
 bscconfig.h.in
-src/osmo-mgw/osmo-mgw
+openbsc.pc
+src/osmo-nitb/osmo-nitb
+src/osmo-bsc_mgcp/osmo-bsc_mgcp
+src/osmo-bsc/osmo-bsc
+src/utils/meas_vis
+src/utils/meas_json
+src/utils/osmo-meas-pcap2db
+src/utils/osmo-meas-udp2db
+src/utils/smpp_mirror
 *.*~
 *.sw?
 .libs
@@ -39,9 +46,32 @@ m4/*.m4
 .version


+# apps and app data
+hlr.sqlite3
+src/utils/bs11_config
+src/ipaccess/ipaccess-config
+src/ipaccess/abisip-find
+src/ipaccess/ipaccess-firmware
+src/ipaccess/ipaccess-proxy
+src/utils/isdnsync
+src/nat/bsc_nat
+src/gprs/osmo-sgsn
+src/gprs/osmo-gbproxy
+src/gprs/osmo-gtphub
+src/osmo-bsc_nat/osmo-bsc_nat
+src/libcommon/gsup_test_client
+src/osmo-msc/osmo-msc
+
 #tests
 tests/testsuite.dir
 tests/*/*_test
+# ignore compiled binaries like msc_vlr_test_foo; do not ignore
+# msc_vlr_test_foo.{c,ok,err}, but do still ignore the corresponding .o object
+# files:
+tests/msc_vlr/msc_vlr_test_*
+!tests/msc_vlr/msc_vlr_test_*.*
+tests/msc_vlr/msc_vlr_test_*.o
+

 tests/atconfig
 tests/atlocal
@@ -49,7 +79,10 @@ tests/package.m4
 tests/testsuite
 tests/testsuite.log

+gsn_restart
+src/openbsc.cfg*
 writtenconfig/
+gtphub_restart_count

 # manuals
 doc/manuals/*.html
--- a/configure.ac
+++ b/configure.ac
@@ -42,7 +42,7 @@ AC_SUBST(LIBRARY_DL)
 PKG_CHECK_MODULES(LIBOSMOCORE, libosmocore >= 1.0.0)
 PKG_CHECK_MODULES(LIBOSMOGSM, libosmogsm >= 1.0.0)
 PKG_CHECK_MODULES(LIBOSMOVTY, libosmovty >= 1.0.0)
-PKG_CHECK_MODULES(LIBOSMONETIF, libosmo-netif >= 0.6.0)
+PKG_CHECK_MODULES(LIBOSMONETIF, libosmo-netif >= 0.4.0)

 AC_ARG_ENABLE(sanitize,
 	[AS_HELP_STRING(
@@ -76,10 +76,21 @@ fi

 dnl Checks for typedefs, structures and compiler characteristics

+# The following test is taken from WebKit's webkit.m4
+saved_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -fvisibility=hidden "
+AC_MSG_CHECKING([if ${CC} supports -fvisibility=hidden])
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([char foo;])],
+      [ AC_MSG_RESULT([yes])
+        SYMBOL_VISIBILITY="-fvisibility=hidden"],
+        AC_MSG_RESULT([no]))
+CFLAGS="$saved_CFLAGS"
+AC_SUBST(SYMBOL_VISIBILITY)
+
 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=null-dereference], [CFLAGS="$CFLAGS -Werror=null-dereference"])
 AX_CHECK_COMPILE_FLAG([-Werror=sizeof-array-argument], [CFLAGS="$CFLAGS -Werror=sizeof-array-argument"])
 AX_CHECK_COMPILE_FLAG([-Werror=sizeof-pointer-memaccess], [CFLAGS="$CFLAGS -Werror=sizeof-pointer-memaccess"])

--- a/contrib/jenkins.sh
+++ b/contrib/jenkins.sh
@@ -63,5 +63,4 @@ if [ "$WITH_MANUALS" = "1" ] && [ "$PUBLISH" = "1" ]; then
 	make -C "$base/doc/manuals" publish
 fi

-$MAKE maintainer-clean
 osmo-clean-workspace.sh
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,109 +1,3 @@
-osmo-mgw (1.6.0) unstable; urgency=medium
-
-  [ Oliver Smith ]
-  * Cosmetic: fix spaces/tabs in mgcp_requests[]
-  * Inactive connection cleanup (disabled by default)
-  * debian: create -doc subpackage with pdf manuals
-  * vty: allow 0 as conn-timeout to disable it
-  * vty: update desc of conn-timeout
-  * manuals: update VTY documentation
-  * "make dist" fix for: no rule to make mgcp_common.h
-  * contrib/jenkins.sh: run "make maintainer-clean"
-
-  [ Philipp Maier ]
-  * Add option to GSM HR frames to RFC5593 representation
-  * mgcp_sdp: cosmetic: correct typo in comment
-  * mgco_client: cosmetic: remove excess whitespace
-  * mgcp_sdp: mgcp_sdp.c does not include own header file
-  * mgcp_sdp: untangle parsing of a= parameters
-  * mgcp_network: use mgcp_rtp_codec in downlink format callback
-  * AMR: Add function to convert between bw-effient and octet aligned mode
-
-  [ Neels Hofmeyr ]
-  * log: don't spam with "can not patch PT" messages
-  * mgcp client: allow setting conn mode for CRCX and MDCX
-  * make codec_table public as osmo_mgcpc_codec_names
-  * move MGW endpoint FSM from osmo-bsc to here
-  * fix: multiple initial CRCX
-  * constify map_codec_to_pt() ptmap arg
-
-  [ Pau Espin Pedrol ]
-  * mgcp-client: whitespace cleanup in mgcp_client.c
-  * mgcp-client: Sanitize implementation of mgcp_client_rtpbridge_wildcard
-  * libosmo-mgcp: Use trunk type during endpoint allocation
-  * cosmetic: Fix typos in comment
-  * cosmetic: tests: mgcp_client_test: clean trailing whitespace
-  * mgcp_msg: Log faulty line on Osmux parsing error
-  * cosmetic: handle_modify_con: Fix indentation level
-  * Introduce log fmt helpers LOGPENDP and LOGPCONN
-  * create_response_with_sdp: Fix inclusion of X-Osmux
-  * osmux: Cleanup of CID alloc pool APIs
-  * mgcp_osmux.c: osmux_enable_endpoint: Fix incorrect return check
-  * osmux: Log osmux socket during osmux_init
-  * mgcp-cli: Change osmo_mgcpc_ep_fsm name to avoid collision with old osmo-bsc
-  * osmux: Document func and return different rc upon osmux init failure
-  * osmux: Fix reception of legacy dummy payloads
-  * osmux: Use LOGPCONN in several log calls
-  * cosmetic: mgcp_udp_send: Document port param is in network byte order
-  * cosmetic: osmux: Document network byte order in port variable
-  * vty: Allow enabling Osmux
-  * osmux: Allocate CID during CRCX
-  * osmux: Introduce mgcp_conn_rtp_is_osmux() helper
-  * osmux: Mark conn_rtp->type as osmux during CRCX
-  * mgcp-cli: Allow submitting X-Osmux on CRCX request
-  * mgcp-cli: Parse X-Osmux on CRCX response
-  * osmux: Handle Osmux MGCP extension in MDCX messages
-  * mgcp-cli: Allow submitting X-Osmux on MDCX request
-  * mgcp-cli: Parse X-Osmux on MDCX response
-  * osmux: Drop unneeded OSMUX_STATE_NEGOTIATING
-  * mgcp-cli: endpoint_fsm: Add API to retrieve Osmux CID from MGW
-  * osmux: Provide correct local port during mgcp resp
-  * osmux: Use remote port to send osmux frames
-  * osmux: Improve logging around osmux enabling events
-  * osmux: Delay osmux enable of conn until remote addr is configured by MDCX
-  * osmux: Redo read/write osmux glue code to have data routed correctly
-  * mgw, mgcp-li: Handle X-Osmux param name as case insensitive
-  * osmux: Use DUMMY ft msg as per Osmux spec
-  * osmux: Fix loopback for Osmux connections
-  * osmux: Fix CID release for non-enabled connections
-  * osmux: Fix hardcoded rtp payload_type 98 in osmux conn
-  * mgcp-cli: Validate osmux cid value during mgcp_msg_gen
-  * mgw: Support uppercase LCO options
-  * mgw: Support lowercase header parameters
-  * mgcp-cli: Support lowercase header parameters
-  * mgw: Support receiving uppercase connection mode
-  * mgw: Support receiving lowercase LCO codec
-  * mgw: Make check of duplicated LCO fields case insensitive
-  * mgw: Allow receiving lowercase MGCP header keyword
-  * mgw: Allow receiving lowercase X-Osmo-Ign Callid field
-  * mgw: Allow receiving uppercase noanswer keyword
-  * doc: X-Osmo-IGN: small formatting and typo fixes
-  * doc: Add Osmux documentation to OsmoMGW User Manual
-  * Catch unsigned integer MGCP parsing errors with strtoul
-  * Fix return variable of strtoul()
-  * Remove undefined param passed to {logging,osmo_stats}_vty_add_cmds
-  * configure.ac: Require libosmo-netif 0.6.0
-
-  [ Alexander Couzens ]
-  * mgcp_internal: LOGPENDP: ensure *endp is not NULL
-
-  [ Harald Welte ]
-  * handle NULL return of rate_ctr_group_alloc()
-  * update .gitignore
-  * mgcp_sdp: Don't check if an unsigned int is below 0
-
-  [ Vadim Yanitskiy ]
-  * configure.ac: drop useless check for -fvisibility=hidden
-
-  [ Daniel Willmann ]
-  * manuals: Add script to regenerate vty/counter documentation
-  * manuals: Update vty/counter documentation
-
-  [ Hoernchen ]
-  * turn -Werror=null-dereference into a warning
-
- -- Pau Espin Pedrol <pespin@sysmocom.de>  Wed, 07 Aug 2019 16:52:58 +0200
-
 osmo-mgw (1.5.0) unstable; urgency=medium

  [ Pau Espin Pedrol ]
--- a/debian/control
+++ b/debian/control
@@ -7,8 +7,7 @@ Build-Depends: debhelper (>=9),
               pkg-config,
               autotools-dev,
               libosmocore-dev,
-               libosmo-netif-dev,
-               osmo-gsm-manuals-dev
+               libosmo-netif-dev
 Standards-Version: 3.9.8
 Vcs-Git: git://git.osmocom.org/osmo-mgw.git
 Vcs-Browser: https://git.osmocom.org/osmo-mgw/
@@ -20,7 +19,7 @@ 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-client6
+Package: libosmo-mgcp-client5
 Section: libs
 Architecture: any
 Multi-Arch: same
@@ -32,14 +31,5 @@ Package: libosmo-mgcp-client-dev
 Section: libdevel
 Architecture: any
 Multi-Arch: same
-Depends: libosmo-mgcp-client6 (= ${binary:Version}), ${misc:Depends}
+Depends: libosmo-mgcp-client5 (= ${binary:Version}), ${misc:Depends}
 Description: libosmo-mgcp-client: Osmocom's Media Gateway Control Protocol client utilities
-
-Package: osmo-mgw-doc
-Architecture: all
-Section: doc
-Priority: optional
-Depends: ${misc:Depends}
-Description: ${misc:Package} PDF documentation
- Various manuals: user manual, VTY reference manual and/or
- protocol/interface manuals.
--- a/debian/libosmo-mgcp-client5.install
+++ b/debian/libosmo-mgcp-client5.install
--- a/debian/osmo-mgw-doc.install
+++ b/debian/osmo-mgw-doc.install
@@ -1 +0,0 @@
-usr/share/doc/osmo-mgw-doc/*.pdf
--- a/debian/rules
+++ b/debian/rules
@@ -30,10 +30,6 @@ override_dh_auto_test:
 	dh_auto_test || (find . -name testsuite.log -exec cat {} \; ; false)

 override_dh_auto_configure:
-	dh_auto_configure -- --with-systemdsystemunitdir=/lib/systemd/system --enable-manuals
-
-# Don't create .pdf.gz files (barely saves space and they can't be opened directly by most pdf readers)
-override_dh_compress:
-	dh_compress -X.pdf
+	dh_auto_configure -- --with-systemdsystemunitdir=/lib/systemd/system

 # See https://www.debian.org/doc/manuals/developers-reference/best-pkging-practices.html#bpp-dbg
--- a/doc/manuals/Makefile.am
+++ b/doc/manuals/Makefile.am
@@ -1,7 +1,6 @@
 EXTRA_DIST = osmomgw-usermanual.adoc \
    osmomgw-usermanual-docinfo.xml \
    osmomgw-vty-reference.xml \
-    regen_doc.sh \
    chapters \
    vty

@@ -13,6 +12,5 @@ if BUILD_MANUALS
  VTY_REFERENCE = osmomgw-vty-reference.xml
  include $(OSMO_GSM_MANUALS_DIR)/build/Makefile.vty-reference.inc

-  OSMO_REPOSITORY = osmo-mgw
  include $(OSMO_GSM_MANUALS_DIR)/build/Makefile.common.inc
 endif
--- a/doc/manuals/chapters/counters_generated.adoc
+++ b/doc/manuals/chapters/counters_generated.adoc
@@ -1,79 +1,10 @@

 // autogenerated by show asciidoc counters
-These counters and their description based on OsmoMGW 1.5.0.64-189f (OsmoMGW).
+These counters and their description based on OsmoMGW 1.3.0.34-9cd52 (OsmoMGW).

 === Rate Counters

 // generating tables for rate_ctr_group
-// rate_ctr_group table aggregated statistics for all rtp connections
-.all_rtp_conn - aggregated statistics for all rtp connections
-[options="header"]
-|===
-| Name | Reference | Description
-| all_rtp:err_tstmp_in | <<all_rtp_conn_all_rtp:err_tstmp_in>> | Total inbound rtp-stream timestamp errors.
-| all_rtp:err_tstmp_out | <<all_rtp_conn_all_rtp:err_tstmp_out>> | Total outbound rtp-stream timestamp errors.
-| all_rtp:packets_rx | <<all_rtp_conn_all_rtp:packets_rx>> | Total inbound rtp packets.
-| all_rtp:octets_rx | <<all_rtp_conn_all_rtp:octets_rx>> | Total inbound rtp octets.
-| all_rtp:packets_tx | <<all_rtp_conn_all_rtp:packets_tx>> | Total outbound rtp packets.
-| all_rtp:octets_tx | <<all_rtp_conn_all_rtp:octets_tx>> | Total outbound rtp octets.
-| all_rtp:dropped | <<all_rtp_conn_all_rtp:dropped>> | Total dropped rtp packets.
-| all_rtp:num_closed_conns | <<all_rtp_conn_all_rtp:num_closed_conns>> | Total number of rtp connections closed.
-|===
-// rate_ctr_group table dlcx statistics
-.dlcx - dlcx statistics
-[options="header"]
-|===
-| Name | Reference | Description
-| dlcx:success | <<dlcx_dlcx:success>> | DLCX command processed successfully.
-| dlcx:wildcard | <<dlcx_dlcx:wildcard>> | wildcard names in DLCX commands are unsupported.
-| dlcx:no_conn | <<dlcx_dlcx:no_conn>> | endpoint specified in DLCX command has no active connections.
-| dlcx:callid | <<dlcx_dlcx:callid>> | CallId specified in DLCX command mismatches endpoint's CallId .
-| dlcx:connid | <<dlcx_dlcx:connid>> | connection ID specified in DLCX command does not exist on endpoint.
-| dlcx:unhandled_param | <<dlcx_dlcx:unhandled_param>> | unhandled parameter in DLCX command.
-| dlcx:rejected | <<dlcx_dlcx:rejected>> | connection deletion rejected by policy.
-| dlcx:deferred | <<dlcx_dlcx:deferred>> | connection deletion deferred by policy.
-|===
-// rate_ctr_group table mdcx statistics
-.mdcx - mdcx statistics
-[options="header"]
-|===
-| Name | Reference | Description
-| mdcx:success | <<mdcx_mdcx:success>> | MDCX command processed successfully.
-| mdcx:wildcard | <<mdcx_mdcx:wildcard>> | wildcard endpoint names in MDCX commands are unsupported.
-| mdcx:no_conn | <<mdcx_mdcx:no_conn>> | endpoint specified in MDCX command has no active connections.
-| mdcx:callid | <<mdcx_mdcx:callid>> | invalid CallId specified in MDCX command.
-| mdcx:connid | <<mdcx_mdcx:connid>> | invalid connection ID specified in MDCX command.
-| crcx:unhandled_param | <<mdcx_crcx:unhandled_param>> | unhandled parameter in MDCX command.
-| mdcx:no_connid | <<mdcx_mdcx:no_connid>> | no connection ID specified in MDCX command.
-| mdcx:conn_not_found | <<mdcx_mdcx:conn_not_found>> | connection specified in MDCX command does not exist.
-| mdcx:invalid_mode | <<mdcx_mdcx:invalid_mode>> | invalid connection mode in MDCX command.
-| mdcx:conn_opt | <<mdcx_mdcx:conn_opt>> | connection options invalid.
-| mdcx:no_remote_conn_desc | <<mdcx_mdcx:no_remote_conn_desc>> | no opposite end specified for connection.
-| mdcx:start_rtp_failure | <<mdcx_mdcx:start_rtp_failure>> | failure to start RTP processing.
-| mdcx:conn_rejected | <<mdcx_mdcx:conn_rejected>> | connection rejected by policy.
-| mdcx:conn_deferred | <<mdcx_mdcx:conn_deferred>> | connection deferred by policy.
-|===
-// rate_ctr_group table crxc statistics
-.crcx - crxc statistics
-[options="header"]
-|===
-| Name | Reference | Description
-| crcx:success | <<crcx_crcx:success>> | CRCX command processed successfully.
-| crcx:bad_action | <<crcx_crcx:bad_action>> | bad action in CRCX command.
-| crcx:unhandled_param | <<crcx_crcx:unhandled_param>> | unhandled parameter in CRCX command.
-| crcx:missing_callid | <<crcx_crcx:missing_callid>> | missing CallId in CRCX command.
-| crcx:invalid_mode | <<crcx_crcx:invalid_mode>> | invalid connection mode in CRCX command.
-| crcx:limit_exceeded | <<crcx_crcx:limit_exceeded>> | limit of concurrent connections was reached.
-| crcx:unkown_callid | <<crcx_crcx:unkown_callid>> | unknown CallId in CRCX command.
-| crcx:alloc_conn_fail | <<crcx_crcx:alloc_conn_fail>> | connection allocation failure.
-| crcx:no_remote_conn_desc | <<crcx_crcx:no_remote_conn_desc>> | no opposite end specified for connection.
-| crcx:start_rtp_failure | <<crcx_crcx:start_rtp_failure>> | failure to start RTP processing.
-| crcx:conn_rejected | <<crcx_crcx:conn_rejected>> | connection rejected by policy.
-| crcx:no_osmux | <<crcx_crcx:no_osmux>> | no osmux offered by peer.
-| crcx:conn_opt | <<crcx_crcx:conn_opt>> | connection options invalid.
-| crcx:codec_nego | <<crcx_crcx:codec_nego>> | codec negotiation failure.
-| crcx:bind_port | <<crcx_crcx:bind_port>> | port bind failure.
-|===
 == Osmo Stat Items

 // generating tables for osmo_stat_items
--- a/doc/manuals/chapters/mgcp_extensions.adoc
+++ b/doc/manuals/chapters/mgcp_extensions.adoc
@@ -11,7 +11,7 @@ indicate collisions or configuration errors.

 ==== `X-Osmo-IGN` Format

-The value part of `X-Osmo-IGN` must be one or more items separated by one or more
+The value part of X-Osmo-IGN must be one or more items separated by one or more
 spaces. Each item consists of one or more non-whitespace characters.

 .Example: `X-Osmo-IGN` format with three ficticious items "X", "abc" and "123".
@@ -19,7 +19,7 @@ spaces. Each item consists of one or more non-whitespace characters.
 X-Osmo-IGN: X abc 123
 ----

-`X-Osmo-IGN` must be issued in the MGCP header section (typically as its last item),
+`X-Osmo-IGN` must be issued in the MGCP section (typically as its last item),
 before the SDP section starts.

 ==== Supported `X-Osmo-IGN` Items
@@ -66,7 +66,3 @@ m=audio 5904 RTP/AVP 97
 a=rtpmap:97 GSM-EFR/8000
 a=ptime:40
 ----
-
-=== `X-Osmux`
-
-See <<mgcp-extension-osmux>>
--- a/doc/manuals/chapters/running.adoc
+++ b/doc/manuals/chapters/running.adoc
@@ -12,7 +12,7 @@ arguments:
 *-h, --help*::
 	Print a short help message about the supported options
 *-V, --version*::
-	Print the compile-time version number of the program
+	Print the compile-time version number of the OsmoBTS program
 *-D, --daemonize*::
 	Fork the process as a daemon into background.
 *-c, --config-file 'CONFIGFILE'*::
--- a/doc/manuals/osmomgw-usermanual.adoc
+++ b/doc/manuals/osmomgw-usermanual.adoc
@@ -20,8 +20,6 @@ include::{srcdir}/chapters/configuration.adoc[]

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

-include::./common/chapters/osmux/osmux.adoc[]
-
 //include::{srcdir}/chapters/counters.adoc[]

 include::./common/chapters/port_numbers.adoc[]
@@ -31,3 +29,5 @@ include::./common/chapters/bibliography.adoc[]
 include::./common/chapters/glossary.adoc[]

 include::./common/chapters/gfdl.adoc[]
+
+
--- a/doc/manuals/regen_doc.sh
+++ b/doc/manuals/regen_doc.sh
@@ -1,17 +0,0 @@
-#!/bin/sh -x
-
-if [ -z "$DOCKER_PLAYGROUND" ]; then
-	echo "You need to set DOCKER_PLAYGROUND"
-	exit 1
-fi
-
-SCRIPT=$(realpath "$0")
-MANUAL_DIR=$(dirname "$SCRIPT")
-
-COMMIT=${COMMIT:-$(git log -1 --format=format:%H)}
-
-cd "$DOCKER_PLAYGROUND/scripts" || exit 1
-
-OSMO_MGW_BRANCH=$COMMIT ./regen_doc.sh osmo-mgw 4243 \
-	"$MANUAL_DIR/chapters/counters_generated.adoc" \
-	"$MANUAL_DIR/vty/mgw_vty_reference.xml"
--- a/doc/manuals/vty/mgw_vty_reference.xml
+++ b/doc/manuals/vty/mgw_vty_reference.xml
@@ -187,11 +187,12 @@
        <param name='MASK' doc='List of logging categories to log, e.g. &apos;abc:mno:xyz&apos;. Available log categories depend on the specific application, refer to the &apos;logging level&apos; command. Optionally add individual log levels like &apos;abc,1:mno,3:xyz,5&apos;, where the level numbers are LOGL_DEBUG=1 LOGL_INFO=3 LOGL_NOTICE=5 LOGL_ERROR=7 LOGL_FATAL=8' />
      </params>
    </command>
-    <command id='logging level (rtp|lglobal|llapd|linp|lmux|lmi|lmib|lsms|lctrl|lgtp|lstats|lgsup|loap|lss7|lsccp|lsua|lm3ua|lmgcp|ljibuf|lrspro) (debug|info|notice|error|fatal)'>
+    <command id='logging level (rtp|iuup|lglobal|llapd|linp|lmux|lmi|lmib|lsms|lctrl|lgtp|lstats|lgsup|loap|lss7|lsccp|lsua|lm3ua|lmgcp|ljibuf) (debug|info|notice|error|fatal)'>
      <params>
        <param name='logging' doc='Configure logging' />
        <param name='level' doc='Set the log level for a specified category' />
        <param name='rtp' doc='RTP stream handling' />
+        <param name='iuup' doc='IuUP within RTP stream handling' />
        <param name='lglobal' doc='Library-internal global log family' />
        <param name='llapd' doc='LAPD in libosmogsm' />
        <param name='linp' doc='A-bis Intput Subsystem' />
@@ -210,7 +211,6 @@
        <param name='lm3ua' doc='libosmo-sigtran MTP3 User Adaptation' />
        <param name='lmgcp' doc='libosmo-mgcp Media Gateway Control Protocol' />
        <param name='ljibuf' doc='libosmo-netif Jitter Buffer' />
-        <param name='lrspro' doc='Remote SIM protocol' />
        <param name='debug' doc='Log debug messages and higher levels' />
        <param name='info' doc='Log informational messages and higher levels' />
        <param name='notice' doc='Log noticeable messages and higher levels' />
@@ -522,11 +522,12 @@
        <param name='MASK' doc='List of logging categories to log, e.g. &apos;abc:mno:xyz&apos;. Available log categories depend on the specific application, refer to the &apos;logging level&apos; command. Optionally add individual log levels like &apos;abc,1:mno,3:xyz,5&apos;, where the level numbers are LOGL_DEBUG=1 LOGL_INFO=3 LOGL_NOTICE=5 LOGL_ERROR=7 LOGL_FATAL=8' />
      </params>
    </command>
-    <command id='logging level (rtp|lglobal|llapd|linp|lmux|lmi|lmib|lsms|lctrl|lgtp|lstats|lgsup|loap|lss7|lsccp|lsua|lm3ua|lmgcp|ljibuf|lrspro) (debug|info|notice|error|fatal)'>
+    <command id='logging level (rtp|iuup|lglobal|llapd|linp|lmux|lmi|lmib|lsms|lctrl|lgtp|lstats|lgsup|loap|lss7|lsccp|lsua|lm3ua|lmgcp|ljibuf) (debug|info|notice|error|fatal)'>
      <params>
        <param name='logging' doc='Configure logging' />
        <param name='level' doc='Set the log level for a specified category' />
        <param name='rtp' doc='RTP stream handling' />
+        <param name='iuup' doc='IuUP within RTP stream handling' />
        <param name='lglobal' doc='Library-internal global log family' />
        <param name='llapd' doc='LAPD in libosmogsm' />
        <param name='linp' doc='A-bis Intput Subsystem' />
@@ -545,7 +546,6 @@
        <param name='lm3ua' doc='libosmo-sigtran MTP3 User Adaptation' />
        <param name='lmgcp' doc='libosmo-mgcp Media Gateway Control Protocol' />
        <param name='ljibuf' doc='libosmo-netif Jitter Buffer' />
-        <param name='lrspro' doc='Remote SIM protocol' />
        <param name='debug' doc='Log debug messages and higher levels' />
        <param name='info' doc='Log informational messages and higher levels' />
        <param name='notice' doc='Log noticeable messages and higher levels' />
@@ -561,7 +561,8 @@
        <param name='debug' doc='Log debug messages and higher levels' />
        <param name='info' doc='Log informational messages and higher levels' />
        <param name='notice' doc='Log noticeable messages and higher levels' />
-        <param name='error' doc='Log error messages and higher levels' />        <param name='fatal' doc='Log only fatal messages' />
+        <param name='error' doc='Log error messages and higher levels' />
+        <param name='fatal' doc='Log only fatal messages' />
      </params>
    </command>
    <command id='logging level force-all (debug|info|notice|error|fatal)'>
@@ -1039,11 +1040,12 @@
        <param name='[last]' doc='Log source file info at the end of a log line. If omitted, log source file info just before the log text.' />
      </params>
    </command>
-    <command id='logging level (rtp|lglobal|llapd|linp|lmux|lmi|lmib|lsms|lctrl|lgtp|lstats|lgsup|loap|lss7|lsccp|lsua|lm3ua|lmgcp|ljibuf|lrspro) (debug|info|notice|error|fatal)'>
+    <command id='logging level (rtp|iuup|lglobal|llapd|linp|lmux|lmi|lmib|lsms|lctrl|lgtp|lstats|lgsup|loap|lss7|lsccp|lsua|lm3ua|lmgcp|ljibuf) (debug|info|notice|error|fatal)'>
      <params>
        <param name='logging' doc='Configure logging' />
        <param name='level' doc='Set the log level for a specified category' />
        <param name='rtp' doc='RTP stream handling' />
+        <param name='iuup' doc='IuUP within RTP stream handling' />
        <param name='lglobal' doc='Library-internal global log family' />
        <param name='llapd' doc='LAPD in libosmogsm' />
        <param name='linp' doc='A-bis Intput Subsystem' />
@@ -1062,7 +1064,6 @@
        <param name='lm3ua' doc='libosmo-sigtran MTP3 User Adaptation' />
        <param name='lmgcp' doc='libosmo-mgcp Media Gateway Control Protocol' />
        <param name='ljibuf' doc='libosmo-netif Jitter Buffer' />
-        <param name='lrspro' doc='Remote SIM protocol' />
        <param name='debug' doc='Log debug messages and higher levels' />
        <param name='info' doc='Log informational messages and higher levels' />
        <param name='notice' doc='Log noticeable messages and higher levels' />
@@ -1185,11 +1186,10 @@
        <param name='login' doc='Enable password checking' />
      </params>
    </command>
-    <command id='bind A.B.C.D [&lt;0-65535&gt;]'>
+    <command id='bind A.B.C.D'>
      <params>
        <param name='bind' doc='Accept VTY telnet connections on local interface' />
        <param name='A.B.C.D' doc='Local interface IP address (default: 127.0.0.1)' />
-        <param name='[&lt;0-65535&gt;]' doc='Local TCP port number' />
      </params>
    </command>
  </node>
@@ -1397,19 +1397,6 @@
        <param name='rtp-patch' doc='Modify RTP packet header in both directions' />
      </params>
    </command>
-    <command id='rtp-patch rfc5993hr'>
-      <params>
-        <param name='rtp-patch' doc='Modify RTP packet header in both directions' />
-        <param name='rfc5993hr' doc='Convert GSM-HR from TS101318 to RFC5993 and vice versa' />
-      </params>
-    </command>
-    <command id='no rtp-patch rfc5993hr'>
-      <params>
-        <param name='no' doc='Negate a command or set its defaults' />
-        <param name='rtp-patch' doc='Modify RTP packet header in both directions' />
-        <param name='rfc5993hr' doc='Convert GSM-HR from TS101318 to RFC5993 and vice versa' />
-      </params>
-    </command>
    <command id='sdp audio fmtp-extra .NAME'>
      <params>
        <param name='sdp' doc='Add extra fmtp for the SDP file' />
@@ -1509,12 +1496,6 @@
        <param name='NAME' doc='Qualified domain name expected in MGCP endpoint names, or &apos;*&apos; to accept any domain' />
      </params>
    </command>
-    <command id='conn-timeout &lt;0-65534&gt;'>
-      <params>
-        <param name='conn-timeout' doc='Set a time after which inactive connections (CIs) are closed. Set to 0 to disable timeout. This can be used to work around interoperability problems causing connections to stay open forever, and slowly exhausting all available ports. Enable keep-alive packets in MGW clients when using this option together with LCLS (OsmoBSC, OsmoMSC: &apos;rtp keep-alive&apos;)!' />
-        <param name='&lt;0-65534&gt;' doc='Timeout value (sec.)' />
-      </params>
-    </command>
    <command id='trunk &lt;1-64&gt;'>
      <params>
        <param name='trunk' doc='Configure a SS7 trunk' />
@@ -1598,19 +1579,6 @@
        <param name='timestamp' doc='Adjust RTP timestamp' />
      </params>
    </command>
-    <command id='rtp-patch rfc5993hr'>
-      <params>
-        <param name='rtp-patch' doc='Modify RTP packet header in both directions' />
-        <param name='rfc5993hr' doc='Convert GSM-HR from TS101318 to RFC5993 and vice versa' />
-      </params>
-    </command>
-    <command id='no rtp-patch rfc5993hr'>
-      <params>
-        <param name='no' doc='Negate a command or set its defaults' />
-        <param name='rtp-patch' doc='Modify RTP packet header in both directions' />
-        <param name='rfc5993hr' doc='Convert GSM-HR from TS101318 to RFC5993 and vice versa' />
-      </params>
-    </command>
    <command id='no rtp-patch timestamp'>
      <params>
        <param name='no' doc='Negate a command or set its defaults' />
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -4,16 +4,10 @@ SUBDIRS = \

 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_common.h \
 	osmocom/mgcp/mgcp.h \
 	osmocom/mgcp/mgcp_common.h \
 	osmocom/mgcp/mgcp_internal.h \
 	osmocom/mgcp/osmux.h \
 	$(NULL)
-
-# This gets copied during make from osmocom/mgcp/mgcp_common.h. Therefore it is not included in the source tree and we
-# don't need to distribute it (OS#4084).
-nobase_nodist_include_HEADERS = \
-	osmocom/mgcp_client/mgcp_common.h \
-	$(NULL)
--- a/include/osmocom/mgcp/mgcp.h
+++ b/include/osmocom/mgcp/mgcp.h
@@ -81,11 +81,10 @@ typedef int (*mgcp_processing_setup)(struct mgcp_endpoint *endp,
 				     struct mgcp_conn_rtp *conn_dst,
 				     struct mgcp_conn_rtp *conn_src);

-struct mgcp_rtp_codec;
-
 typedef void (*mgcp_get_format)(struct mgcp_endpoint *endp,
-				const struct mgcp_rtp_codec **codec,
-				const char **fmtp_extra,
+				int *payload_type,
+				const char**subtype_name,
+				const char**fmtp_extra,
 				struct mgcp_conn_rtp *conn);

 /**
@@ -191,7 +190,6 @@ struct mgcp_trunk_config {
 	/* RTP patching */
 	int force_constant_ssrc; /* 0: don't, 1: once */
 	int force_aligned_timing;
-	bool rfc5993_hr_convert;

 	/* spec handling */
 	int force_realloc;
@@ -278,7 +276,7 @@ struct mgcp_config {
 	char domain[255+1];

 	/* time after which inactive connections (CIs) get closed */
-	int conn_timeout;
+	unsigned int conn_timeout;
 };

 /* config management */
--- a/include/osmocom/mgcp/mgcp_codec.h
+++ b/include/osmocom/mgcp/mgcp_codec.h
@@ -2,6 +2,6 @@

 void mgcp_codec_summary(struct mgcp_conn_rtp *conn);
 void mgcp_codec_reset_all(struct mgcp_conn_rtp *conn);
-int mgcp_codec_add(struct mgcp_conn_rtp *conn, int payload_type, const char *audio_name, const struct mgcp_codec_param *param);
+int mgcp_codec_add(struct mgcp_conn_rtp *conn, int payload_type, const char *audio_name);
 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);
--- a/include/osmocom/mgcp/mgcp_common.h
+++ b/include/osmocom/mgcp/mgcp_common.h
@@ -50,7 +50,6 @@ enum mgcp_connection_mode {
 };

 #define MGCP_X_OSMO_IGN_HEADER "X-Osmo-IGN:"
-#define MGCP_X_OSMO_OSMUX_HEADER "X-Osmux:"

 /* Values should be bitwise-OR-able */
 enum mgcp_x_osmo_ign {
@@ -58,12 +57,6 @@ enum mgcp_x_osmo_ign {
 	MGCP_X_OSMO_IGN_CALLID = 1,
 };

-/* Codec parameters (communicated via SDP/fmtp) */
-struct mgcp_codec_param {
-	bool amr_octet_aligned_present;
-	bool amr_octet_aligned;
-};
-
 /* Ensure that the msg->l2h is NUL terminated. */
 static inline int mgcp_msg_terminate_nul(struct msgb *msg)
 {
--- a/include/osmocom/mgcp/mgcp_endp.h
+++ b/include/osmocom/mgcp/mgcp_endp.h
@@ -99,3 +99,4 @@ struct mgcp_endpoint {
 #define ENDPOINT_NUMBER(endp) abs((int)(endp - endp->tcfg->endpoints))

 void mgcp_endp_release(struct mgcp_endpoint *endp);
+
--- a/include/osmocom/mgcp/mgcp_internal.h
+++ b/include/osmocom/mgcp/mgcp_internal.h
@@ -95,9 +95,6 @@ struct mgcp_rtp_codec {
 	int payload_type;
 	char *audio_name;
 	char *subtype_name;
-
-	bool param_present;
-	struct mgcp_codec_param param;
 };

 /* 'mgcp_rtp_end': basically a wrapper around the RTP+RTCP ports */
@@ -131,7 +128,6 @@ struct mgcp_rtp_end {
 	int force_constant_ssrc; /* -1: always, 0: don't, 1: once */
 	/* should we perform align_rtp_timestamp_offset() (1) or not (0) */
 	int force_aligned_timing;
-	bool rfc5993_hr_convert;

 	/* Each end has a separate socket for RTP and RTCP */
 	struct osmo_fd rtp;
@@ -188,9 +184,9 @@ struct mgcp_conn_rtp {
 	struct {
 		/* Osmux state: disabled, activating, active */
 		enum osmux_state state;
-		/* Is cid holding valid data? is it allocated from pool? */
-		bool cid_allocated;
-		/* Allocated Osmux circuit ID for this conn */
+		/* Allocated Osmux circuit ID for this endpoint */
+		int allocated_cid;
+		/* Used Osmux circuit ID for this endpoint */
 		uint8_t cid;
 		/* handle to batch messages */
 		struct osmux_in_handle *in;
@@ -301,8 +297,9 @@ int mgcp_setup_rtp_processing_default(struct mgcp_endpoint *endp,
 				      struct mgcp_conn_rtp *conn_src);

 void mgcp_get_net_downlink_format_default(struct mgcp_endpoint *endp,
-					  const struct mgcp_rtp_codec **codec,
-					  const char **fmtp_extra,
+					  int *payload_type,
+					  const char**audio_name,
+					  const char**fmtp_extra,
 					  struct mgcp_conn_rtp *conn);

 /* internal RTP Annex A counting */
@@ -312,11 +309,6 @@ void mgcp_rtp_annex_count(struct mgcp_endpoint *endp, struct mgcp_rtp_state *sta

 int mgcp_set_ip_tos(int fd, int tos);

-/* Was conn configured to handle Osmux? */
-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;
-}
-
 enum {
 	MGCP_DEST_NET = 0,
 	MGCP_DEST_BTS,
@@ -340,13 +332,3 @@ enum {

 void mgcp_get_local_addr(char *addr, struct mgcp_conn_rtp *conn);
 void mgcp_conn_watchdog_kick(struct mgcp_conn *conn);
-
-#define LOGPENDP(endp, cat, level, fmt, args...) \
-LOGP(cat, level, "endpoint:0x%x " fmt, \
-     endp ? ENDPOINT_NUMBER(endp) : -1, \
-     ## args)
-
-#define LOGPCONN(conn, cat, level, fmt, args...) \
-LOGPENDP((conn)->endp, cat, level, "CI:%s " fmt, \
-         (conn)->id, \
-         ## args)
--- a/include/osmocom/mgcp/osmux.h
+++ b/include/osmocom/mgcp/osmux.h
@@ -14,20 +14,18 @@ enum {
 int osmux_init(int role, struct mgcp_config *cfg);
 int osmux_enable_conn(struct mgcp_endpoint *endp, struct mgcp_conn_rtp *conn,
 		      struct in_addr *addr, uint16_t port);
-void conn_osmux_disable(struct mgcp_conn_rtp *conn);
-int conn_osmux_allocate_cid(struct mgcp_conn_rtp *conn, int osmux_cid);
-void conn_osmux_release_cid(struct mgcp_conn_rtp *conn);
+void osmux_disable_conn(struct mgcp_conn_rtp *conn);
+void osmux_allocate_cid(struct mgcp_conn_rtp *conn);
+void osmux_release_cid(struct mgcp_conn_rtp *conn);
 int osmux_xfrm_to_osmux(char *buf, int buf_len, struct mgcp_conn_rtp *conn);
 int osmux_send_dummy(struct mgcp_endpoint *endp, struct mgcp_conn_rtp *conn);
-
-void osmux_cid_pool_get(uint8_t osmux_cid);
-int osmux_cid_pool_get_next(void);
-void osmux_cid_pool_put(uint8_t osmux_cid);
-bool osmux_cid_pool_allocated(uint8_t osmux_cid);
-int osmux_cid_pool_count_used(void);
+int osmux_get_cid(void);
+void osmux_put_cid(uint8_t osmux_cid);
+int osmux_used_cid(void);

 enum osmux_state {
 	OSMUX_STATE_DISABLED = 0, /* Osmux not being currently used by endp */
+	OSMUX_STATE_NEGOTIATING,  /* Osmux was locally requested in MGCP CRCX */
 	OSMUX_STATE_ACTIVATING,   /* Osmux was accepted in MGCP CRCX ACK. It can now be enabled by \ref osmux_enable_endpoint. */
 	OSMUX_STATE_ENABLED,	  /* Osmux was initialized by \ref osmux_enable_endpoint and can process frames */
 };
--- a/include/osmocom/mgcp_client/mgcp_client.h
+++ b/include/osmocom/mgcp_client/mgcp_client.h
@@ -37,7 +37,7 @@ enum mgcp_codecs {
 	CODEC_PCMA_8000_1 = 8,
 	CODEC_G729_8000_1 = 18,
 	CODEC_GSMEFR_8000_1 = 110,
-	CODEC_GSMHR_8000_1 = 111,
+	CODEC_GSMHR_8000_1 = 111,	
 	CODEC_AMR_8000_1 = 112,
 	CODEC_AMRWB_16000_1 = 113,
 };
@@ -47,10 +47,6 @@ enum mgcp_codecs {
 * this is an internal assumption that is made to avoid lookup tables.
 * The API-User should not rely on this coincidence! */

-extern const struct value_string osmo_mgcpc_codec_names[];
-static inline const char *osmo_mgcpc_codec_name(enum mgcp_codecs val)
-{ return get_value_string(osmo_mgcpc_codec_names, val); }
-
 /*! Structure to build a payload type map to allow the defiition custom payload
 *  types. */
 struct ptmap {
@@ -67,8 +63,6 @@ struct mgcp_response_head {
 	char comment[MGCP_COMMENT_MAXLEN];
 	char conn_id[MGCP_CONN_ID_MAXLEN];
 	char endpoint[MGCP_ENDPOINT_MAXLEN];
-	bool x_osmo_osmux_use;
-	uint8_t x_osmo_osmux_cid;
 };

 struct mgcp_response {
@@ -80,7 +74,7 @@ struct mgcp_response {
 	enum mgcp_codecs codecs[MGCP_MAX_CODECS];
 	unsigned int codecs_len;
 	struct ptmap ptmap[MGCP_MAX_CODECS];
-	unsigned int ptmap_len;
+	unsigned int ptmap_len;	
 };

 enum mgcp_verb {
@@ -97,7 +91,6 @@ enum mgcp_verb {
 #define MGCP_MSG_PRESENCE_AUDIO_IP	0x0008
 #define MGCP_MSG_PRESENCE_AUDIO_PORT	0x0010
 #define MGCP_MSG_PRESENCE_CONN_MODE	0x0020
-#define MGCP_MSG_PRESENCE_X_OSMO_OSMUX_CID 0x4000
 #define MGCP_MSG_PRESENCE_X_OSMO_IGN	0x8000

 struct mgcp_msg {
@@ -116,10 +109,6 @@ struct mgcp_msg {
 	struct ptmap ptmap[MGCP_MAX_CODECS];
 	unsigned int ptmap_len;
 	uint32_t x_osmo_ign;
-	bool x_osmo_osmux_use;
-	int x_osmo_osmux_cid; /* -1 is wildcard */
-	bool param_present;
-	struct mgcp_codec_param param;
 };

 void mgcp_client_conf_init(struct mgcp_client_conf *conf);
@@ -159,7 +148,7 @@ static inline const char *mgcp_client_cmode_name(enum mgcp_connection_mode mode)
 }

 enum mgcp_codecs map_str_to_codec(const char *str);
-unsigned int map_codec_to_pt(const struct ptmap *ptmap, unsigned int ptmap_len,
+unsigned int map_codec_to_pt(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);
--- a/include/osmocom/mgcp_client/mgcp_client_endpoint_fsm.h
+++ b/include/osmocom/mgcp_client/mgcp_client_endpoint_fsm.h
@@ -1,51 +0,0 @@
-/* FSM to manage multiple connections of an MGW endpoint */
-#pragma once
-
-#include <osmocom/mgcp_client/mgcp_client_fsm.h>
-
-#define LOG_MGCPC_EP(ep, level, fmt, args...) do { \
-	LOGPFSML(ep->fi, level, "%s " fmt, \
-		 osmo_mgcpc_ep_name(ep), ## args); \
-	} while(0)
-
-struct osmo_mgcpc_ep;
-struct osmo_mgcpc_ep_ci;
-struct osmo_tdef;
-
-struct osmo_mgcpc_ep *osmo_mgcpc_ep_alloc(struct osmo_fsm_inst *parent, uint32_t parent_term_event,
-					  struct mgcp_client *mgcp_client,
-					  const struct osmo_tdef *T_defs,
-					  const char *fsm_id,
-					  const char *endpoint_str_fmt, ...);
-
-struct osmo_mgcpc_ep_ci *osmo_mgcpc_ep_ci_add(struct osmo_mgcpc_ep *ep, const char *label_fmt, ...);
-const struct mgcp_conn_peer *osmo_mgcpc_ep_ci_get_rtp_info(const struct osmo_mgcpc_ep_ci *ci);
-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);
-
-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,
-			      uint32_t event_success, uint32_t event_failure,
-			      void *notify_data);
-
-void osmo_mgcpc_ep_cancel_notify(struct osmo_mgcpc_ep *ep, struct osmo_fsm_inst *notify);
-struct osmo_mgcpc_ep *osmo_mgcpc_ep_ci_ep(struct osmo_mgcpc_ep_ci *ci);
-
-/*! Dispatch a DLCX for the given connection.
- * \param ci  Connection identifier as obtained from osmo_mgcpc_ep_ci_add().
- */
-static inline void osmo_mgcpc_ep_ci_dlcx(struct osmo_mgcpc_ep_ci *ci)
-{
-	osmo_mgcpc_ep_ci_request(ci, MGCP_VERB_DLCX, NULL, NULL, 0, 0, NULL);
-}
-
-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);
-
-extern const struct value_string osmo_mgcp_verb_names[];
-static inline const char *osmo_mgcp_verb_name(enum mgcp_verb val)
-{ return get_value_string(osmo_mgcp_verb_names, val); }
--- a/include/osmocom/mgcp_client/mgcp_client_fsm.h
+++ b/include/osmocom/mgcp_client/mgcp_client_fsm.h
@@ -47,20 +47,6 @@ struct mgcp_conn_peer {
 	 * known to issue incoherent or unknown CallIDs / to issue CRCX commands with a different domain
 	 * name than the BSC. An OsmoMGW will then ignore these and not fail on mismatches. */
 	uint32_t x_osmo_ign;
-
-	/*! send 'X-Osmux: %d' header (or "*" as wildcard). */
-	bool x_osmo_osmux_use;
-	/*! -1 means send wildcard. */
-	int x_osmo_osmux_cid;
-
-	/*! If left MGCP_CONN_NONE, use MGCP_CONN_RECV_ONLY or MGCP_CONN_RECV_SEND, depending on whether an audio RTP
-	 * address is set. If != MGCP_CONN_NONE, force this conn mode. */
-	enum mgcp_connection_mode conn_mode;
-
-	/*! If the codec requires additional format parameters (fmtp), those cann be set here, see also
-	 * mgcp_common.h */
-	bool param_present;
-	struct mgcp_codec_param param;
 };

 struct osmo_fsm_inst *mgcp_conn_create(struct mgcp_client *mgcp, struct osmo_fsm_inst *parent_fi, uint32_t parent_term_evt,
@@ -69,5 +55,3 @@ 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);
-
-const char *osmo_mgcpc_conn_peer_name(const struct mgcp_conn_peer *info);
--- a/osmoappdesc.py
+++ b/osmoappdesc.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python

 # (C) 2013 by Katerina Barone-Adesi <kat.obsc@gmail.com>
 # This program is free software: you can redistribute it and/or modify
--- a/src/libosmo-mgcp-client/Makefile.am
+++ b/src/libosmo-mgcp-client/Makefile.am
@@ -20,7 +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=6:0:0
+MGCP_CLIENT_LIBVERSION=5:0:0

 lib_LTLIBRARIES = \
 	libosmo-mgcp-client.la \
@@ -30,7 +30,6 @@ libosmo_mgcp_client_la_SOURCES = \
 	mgcp_client.c \
 	mgcp_client_vty.c \
 	mgcp_client_fsm.c \
-	mgcp_client_endpoint_fsm.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
@@ -35,16 +35,9 @@
 #include <errno.h>
 #include <unistd.h>
 #include <string.h>
-#include <ctype.h>
-#include <stdlib.h>
-#include <limits.h>
-
-#ifndef OSMUX_CID_MAX
-#define OSMUX_CID_MAX 255 /* FIXME: use OSMUX_CID_MAX from libosmo-netif? */
-#endif

 /* Codec descripton for dynamic payload types (SDP) */
-const struct value_string osmo_mgcpc_codec_names[] = {
+static const struct value_string codec_table[] = {
 	{ CODEC_PCMU_8000_1, "PCMU/8000/1" },
 	{ CODEC_GSM_8000_1, "GSM/8000/1" },
 	{ CODEC_PCMA_8000_1, "PCMA/8000/1" },
@@ -88,19 +81,19 @@ enum mgcp_codecs map_str_to_codec(const char *str)

 	osmo_strlcpy(str_buf, extract_codec_name(str), sizeof(str_buf));

-	for (i = 0; i < ARRAY_SIZE(osmo_mgcpc_codec_names); i++) {
-		codec_name = extract_codec_name(osmo_mgcpc_codec_names[i].str);
+	for (i = 0; i < ARRAY_SIZE(codec_table); i++) {
+		codec_name = extract_codec_name(codec_table[i].str);
 		if (!codec_name)
 			continue;
 		if (strcmp(codec_name, str_buf) == 0)
-			return osmo_mgcpc_codec_names[i].value;
+			return codec_table[i].value;
 	}

 	return -1;
 }

 /* Check the ptmap for illegal mappings */
-static int check_ptmap(const struct ptmap *ptmap)
+static int check_ptmap(struct ptmap *ptmap)
 {
 	/* Check if there are mappings that leave the IANA assigned dynamic
 	 * payload type range. Under normal conditions such mappings should
@@ -129,7 +122,7 @@ error:
 *  \ptmap[in] ptmap_len length of the payload type map.
 *  \ptmap[in] codec the codec for which the payload type should be looked up.
 *  \returns assigned payload type */
-unsigned int map_codec_to_pt(const struct ptmap *ptmap, unsigned int ptmap_len,
+unsigned int map_codec_to_pt(struct ptmap *ptmap, unsigned int ptmap_len,
 			     enum mgcp_codecs codec)
 {
 	unsigned int i;
@@ -267,8 +260,7 @@ static bool mgcp_line_is_valid(const char *line)
 static int mgcp_parse_audio_port_pt(struct mgcp_response *r, char *line)
 {
 	char *pt_str;
-	char *pt_end;
-	unsigned long int pt;
+	unsigned int pt;
 	unsigned int count = 0;
 	unsigned int i;

@@ -292,14 +284,7 @@ static int mgcp_parse_audio_port_pt(struct mgcp_response *r, char *line)
 		pt_str = strtok(NULL, " ");
 		if (!pt_str)
 			break;
-		errno = 0;
-		pt = strtoul(pt_str, &pt_end, 0);
-		if ((errno == ERANGE && pt == ULONG_MAX) || (errno && !pt) ||
-		    pt_str == pt_end)
-			goto response_parse_failure_pt;
-
-		if (pt >> 7) /* PT is 7 bit field, higher values not allowed */
-			goto response_parse_failure_pt;
+		pt = atoi(pt_str);

 		/* Do not allow duplicate payload types */
 		for (i = 0; i < count; i++)
@@ -337,34 +322,48 @@ static int mgcp_parse_audio_ptime_rtpmap(struct mgcp_response *r, const char *li
 {
 	unsigned int pt;
 	char codec_resp[64];
-	enum mgcp_codecs codec;
+	unsigned int codec;
+	
+	
+	if (strstr(line, "ptime")) {
+		if (sscanf(line, "a=ptime:%u", &r->ptime) != 1)
+			goto response_parse_failure_ptime;
+	} else if (strstr(line, "rtpmap")) {
+		if (sscanf(line, "a=rtpmap:%d %63s", &pt, codec_resp) == 2) {
+			/* The MGW may assign an own payload type in the
+			 * response if the choosen codec falls into the IANA
+			 * assigned dynamic payload type range (96-127).
+			 * Normally the MGW should obey the 3gpp payload type
+			 * assignments, which are fixed, so we likely wont see
+			 * anything unexpected here. In order to be sure that
+			 * we will now check the codec string and if the result
+			 * does not match to what is IANA / 3gpp assigned, we
+			 * will create an entry in the ptmap table so we can
+			 * lookup later what has been assigned. */
+			codec = map_str_to_codec(codec_resp);
+			if (codec != pt) {
+				if (r->ptmap_len < ARRAY_SIZE(r->ptmap)) {
+					r->ptmap[r->ptmap_len].pt = pt;
+					r->ptmap[r->ptmap_len].codec = codec;
+					r->ptmap_len++;
+				} else
+					goto response_parse_failure_rtpmap;
+			}

-#define A_PTIME "a=ptime:"
-#define A_RTPMAP "a=rtpmap:"
-
-	if (osmo_str_startswith(line, A_PTIME)) {
-		if (sscanf(line, A_PTIME "%u", &r->ptime) != 1) {
-			LOGP(DLMGCP, LOGL_ERROR,
-			     "Failed to parse SDP parameter, invalid ptime (%s)\n", line);
-			return -EINVAL;
-		}
-	} else if (osmo_str_startswith(line, A_RTPMAP)) {
-		if (sscanf(line, A_RTPMAP "%d %63s", &pt, codec_resp) != 2) {
-			LOGP(DLMGCP, LOGL_ERROR,
-			     "Failed to parse SDP parameter, invalid rtpmap: %s\n", osmo_quote_str(line, -1));
-			return -EINVAL;
-		}
-		if (r->ptmap_len >= ARRAY_SIZE(r->ptmap)) {
-			LOGP(DLMGCP, LOGL_ERROR, "No more space in ptmap array (len=%u)\n", r->ptmap_len);
-			return -ENOSPC;
-		}
-		codec = map_str_to_codec(codec_resp);
-		r->ptmap[r->ptmap_len].pt = pt;
-		r->ptmap[r->ptmap_len].codec = codec;
-		r->ptmap_len++;
+		} else
+			goto response_parse_failure_rtpmap;
 	}
-
+	
 	return 0;
+
+response_parse_failure_ptime:
+	LOGP(DLMGCP, LOGL_ERROR,
+	     "Failed to parse SDP parameter, invalid ptime (%s)\n", line);
+	return -EINVAL;		
+response_parse_failure_rtpmap:
+	LOGP(DLMGCP, LOGL_ERROR,
+	     "Failed to parse SDP parameter, invalid rtpmap (%s)\n", line);
+	return -EINVAL;		
 }

 /* Parse a line like "c=IN IP4 10.11.12.13" */
@@ -394,37 +393,6 @@ response_parse_failure:
 	return -EINVAL;
 }

-/*! Extract OSMUX CID from an MGCP parameter line (string).
- *  \param[in] line single parameter line from the MGCP message
- *  \returns OSMUX CID, -1 wildcard, -2 on error
- * FIXME: This is a copy of function in mgcp_msg.c. Have some common.c file between both libs?
- */
-static int mgcp_parse_osmux_cid(const char *line)
-{
-	int osmux_cid;
-
-
-	if (strcasecmp(line + 2, "Osmux: *") == 0) {
-		LOGP(DLMGCP, LOGL_DEBUG, "Parsed wilcard Osmux CID\n");
-		return -1;
-	}
-
-	if (sscanf(line + 2 + 7, "%u", &osmux_cid) != 1) {
-		LOGP(DLMGCP, LOGL_ERROR, "Failed parsing Osmux in MGCP msg line: %s\n",
-		     line);
-		return -2;
-	}
-
-	if (osmux_cid > OSMUX_CID_MAX) { /* OSMUX_CID_MAX from libosmo-netif */
-		LOGP(DLMGCP, LOGL_ERROR, "Osmux ID too large: %u > %u\n",
-		     osmux_cid, OSMUX_CID_MAX);
-		return -2;
-	}
-	LOGP(DLMGCP, LOGL_DEBUG, "bsc-nat offered Osmux CID %u\n", osmux_cid);
-
-	return osmux_cid;
-}
-
 /* A new section is marked by a double line break, check a few more
 * patterns as there may be variants */
 static char *mgcp_find_section_end(char *string)
@@ -466,8 +434,9 @@ int mgcp_response_parse_params(struct mgcp_response *r)
 	/* Find beginning of the parameter (SDP) section */
 	data_ptr = mgcp_find_section_end(data);
 	if (!data_ptr) {
-		LOGP(DLMGCP, LOGL_DEBUG, "MGCP response contains no SDP parameters\n");
-		rc = 0;
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "MGCP response: cannot find start of SDP parameters\n");
+		rc = -EINVAL;
 		goto exit;
 	}

@@ -564,12 +533,12 @@ static int parse_head_params(struct mgcp_response *r)
 	/* If there is an SDP body attached, prevent for_each_non_empty_line()
 	 * into running in there, we are not yet interested in the parameters
 	 * stored there. */
-	data_end = mgcp_find_section_end(data);
+	data_end = mgcp_find_section_end(data);	
 	if (data_end)
 		*data_end = '\0';

 	for_each_non_empty_line(line, data_ptr) {
-		switch (toupper(line[0])) {
+		switch (line[0]) {
 		case 'Z':
 			rc = mgcp_parse_head_param(r->head.endpoint,
 						   sizeof(r->head.endpoint),
@@ -598,21 +567,6 @@ static int parse_head_params(struct mgcp_response *r)
 			if (rc)
 				goto exit;
 			break;
-		case 'X':
-			if (strncasecmp("Osmux: ", line + 2, strlen("Osmux: ")) == 0) {
-				rc = mgcp_parse_osmux_cid(line);
-				if (rc < 0) {
-					/* -1: we don't want wildcards in response. -2: error */
-					rc = -EINVAL;
-					goto exit;
-				}
-				r->head.x_osmo_osmux_use = true;
-				r->head.x_osmo_osmux_cid = (uint8_t) rc;
-				rc = 0;
-				break;
-			}
-			/* Ignore unknown X-headers */
-			break;
 		default:
 			/* skip unhandled parameters */
 			break;
@@ -874,15 +828,16 @@ 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)
+const char *mgcp_client_rtpbridge_wildcard(const struct mgcp_client *mgcp)
 {
 	static char endpoint[MGCP_ENDPOINT_MAXLEN];
 	int rc;

-	rc = snprintf(endpoint, sizeof(endpoint), "%s@%s", name, mgcp_client_endpoint_domain(mgcp));
+#define RTPBRIDGE_WILDCARD_FMT "rtpbridge/*@%s"
+	rc = snprintf(endpoint, sizeof(endpoint), RTPBRIDGE_WILDCARD_FMT, 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));
+		LOGP(DLMGCP, LOGL_ERROR, "MGCP endpoint exceeds maximum length of %zu: '" RTPBRIDGE_WILDCARD_FMT "'\n",
+		     sizeof(endpoint) - 1, mgcp_client_endpoint_domain(mgcp));
 		return NULL;
 	}
 	if (rc < 1) {
@@ -892,11 +847,6 @@ static const char *_mgcp_client_name_append_domain(const struct mgcp_client *mgc
 	return endpoint;
 }

-const char *mgcp_client_rtpbridge_wildcard(const struct mgcp_client *mgcp)
-{
-	return _mgcp_client_name_append_domain(mgcp, "rtpbridge/*");
-}
-
 struct mgcp_response_pending * mgcp_client_pending_add(
 					struct mgcp_client *mgcp,
 					mgcp_trans_id_t trans_id,
@@ -1028,8 +978,8 @@ static int add_lco(struct msgb *msg, struct mgcp_msg *mgcp_msg)
 		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);
-
+			codec = get_value_string_or_null(codec_table, pt);
+			
 			/* Note: Use codec descriptors from enum mgcp_codecs
 			 * in mgcp_client only! */
 			OSMO_ASSERT(codec);
@@ -1101,37 +1051,23 @@ static int add_sdp(struct msgb *msg, struct mgcp_msg *mgcp_msg, struct mgcp_clie
 	}
 	rc += msgb_printf(msg, "\r\n");

-	/* Add optional codec parameters (fmtp) */
-	if (mgcp_msg->param_present) {
-		for (i = 0; i < mgcp_msg->codecs_len; i++) {
-			/* The following is only applicable for AMR */
-			if (mgcp_msg->codecs[i] != CODEC_AMR_8000_1 && mgcp_msg->codecs[i] != CODEC_AMRWB_16000_1)
-				   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);
-			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);
-		}
-	}
-
 	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]);
-
+		
 		/* Note: Only dynamic payload type from the range 96-127
 		 * require to be explained further via rtpmap. All others
 		 * are implcitly definedby the number in m=audio */
 		if (pt >= 96 && pt <= 127) {
-			codec = get_value_string_or_null(osmo_mgcpc_codec_names, mgcp_msg->codecs[i]);
+			codec = get_value_string_or_null(codec_table, mgcp_msg->codecs[i]);

 			/* Note: Use codec descriptors from enum mgcp_codecs
 			 * in mgcp_client only! */
 			OSMO_ASSERT(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);

@@ -1150,7 +1086,6 @@ struct msgb *mgcp_msg_gen(struct mgcp_client *mgcp, struct mgcp_msg *mgcp_msg)
 	int rc = 0;
 	int rc_sdp;
 	bool use_sdp = false;
-	char buf[32];

 	msg->l2h = msg->data;
 	msg->cb[MSGB_CB_MGCP_TRANS_ID] = trans_id;
@@ -1254,22 +1189,6 @@ struct msgb *mgcp_msg_gen(struct mgcp_client *mgcp, struct mgcp_msg *mgcp_msg)
 		    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) {
-			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 +=
-		    msgb_printf(msg, MGCP_X_OSMO_OSMUX_HEADER "%s\r\n",
-				mgcp_msg->x_osmo_osmux_cid == -1 ? " *": buf);
-	}
-
-
 	/* Add session description protocol (SDP) */
 	if (use_sdp
 	    && (mgcp_msg->verb == MGCP_VERB_CRCX
--- a/src/libosmo-mgcp-client/mgcp_client_endpoint_fsm.c
+++ b/src/libosmo-mgcp-client/mgcp_client_endpoint_fsm.c
@@ -1,968 +0,0 @@
-/* FSM to manage multiple connections of an MGW endpoint
- *
- * (C) 2018-2019 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
- * All Rights Reserved
- *
- * Author: Neels Hofmeyr <neels@hofmeyr.de>
- *
- * 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 <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-
-#include <osmocom/core/fsm.h>
-#include <osmocom/core/byteswap.h>
-#include <osmocom/core/tdef.h>
-
-#include <osmocom/mgcp_client/mgcp_client_endpoint_fsm.h>
-
-#define LOG_CI(ci, level, fmt, args...) do { \
-	if (!ci || !ci->ep) \
-		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), \
-			ci->label ? : "-", \
-			ci->mgcp_ci_str[0] ? " CI=" : "", \
-			ci->mgcp_ci_str[0] ? ci->mgcp_ci_str : "", \
-			## args); \
-	} while(0)
-
-#define LOG_CI_VERB(ci, level, fmt, args...) do { \
-	if (ci->verb_info.addr[0]) \
-		LOG_CI(ci, level, "%s %s:%u: " fmt, \
-			osmo_mgcp_verb_name(ci->verb), ci->verb_info.addr, ci->verb_info.port, \
-			## args); \
-	else \
-		LOG_CI(ci, level, "%s: " fmt, \
-			osmo_mgcp_verb_name(ci->verb), \
-			## args); \
-	} while(0)
-
-enum osmo_mgcpc_ep_fsm_state {
-	OSMO_MGCPC_EP_ST_UNUSED = 0,
-	OSMO_MGCPC_EP_ST_WAIT_MGW_RESPONSE,
-	OSMO_MGCPC_EP_ST_IN_USE,
-};
-
-enum osmo_mgcpc_ep_fsm_event {
-	_OSMO_MGCPC_EP_EV_LAST = 0,
-	/* and MGW response events are allocated dynamically */
-};
-
-#define FIRST_CI_EVENT (_OSMO_MGCPC_EP_EV_LAST + (_OSMO_MGCPC_EP_EV_LAST & 1)) /* rounded up to even nr */
-#define USABLE_CI ((32 - FIRST_CI_EVENT)/2)
-#define EV_TO_CI_IDX(event) ((event - FIRST_CI_EVENT) / 2)
-
-#define CI_EV_SUCCESS(ci) (FIRST_CI_EVENT + (((ci) - ci->ep->ci) * 2))
-#define CI_EV_FAILURE(ci) (CI_EV_SUCCESS(ci) + 1)
-
-static struct osmo_fsm osmo_mgcpc_ep_fsm;
-
-struct fsm_notify {
-	struct llist_head entry;
-	struct osmo_fsm_inst *fi;
-	uint32_t success;
-	uint32_t failure;
-	void *data;
-};
-
-/*! One connection on an endpoint, corresponding to a connection identifier (CI) as returned by the MGW.
- * An endpoint has a fixed number of slots of these, which may or may not be in use.
- */
-struct osmo_mgcpc_ep_ci {
-	struct osmo_mgcpc_ep *ep;
-
-	bool occupied;
-	char label[64];
-	struct osmo_fsm_inst *mgcp_client_fi;
-
-	bool pending;
-	bool sent;
-	enum mgcp_verb verb;
-	struct mgcp_conn_peer verb_info;
-	struct fsm_notify notify;
-
-	bool got_port_info;
-	struct mgcp_conn_peer rtp_info;
-	char mgcp_ci_str[MGCP_CONN_ID_LENGTH];
-};
-
-/*! An MGW endpoint with N connections, like "rtpbridge/23@mgw". */
-struct osmo_mgcpc_ep {
-	/*! MGCP client connection to the MGW. */
-	struct mgcp_client *mgcp_client;
-	struct osmo_fsm_inst *fi;
-
-	/*! Endpoint string; at first this might be a wildcard, and upon the first CRCX OK response, this will reflect
-	 * the endpoint name returned by the MGW. */
-	char endpoint[MGCP_ENDPOINT_MAXLEN];
-
-	/*! Timeout definitions used for this endpoint, see osmo_mgcpc_ep_fsm_timeouts. */
-	const struct osmo_tdef *T_defs;
-
-	/*! True as soon as the first CRCX OK is received. The endpoint name may be determined by the first CRCX
-	 * response, so to dispatch any other messages, the FSM instance *must* wait for the first CRCX OK to arrive
-	 * first. Once the endpoint name is pinpointed, any amount of operations may be dispatched concurrently. */
-	bool first_crcx_complete;
-
-	/*! Endpoint connection slots. Note that each connection has its own set of FSM event numbers to signal success
-	 * and failure, depending on its index within this array. See CI_EV_SUCCESS and CI_EV_FAILURE. */
-	struct osmo_mgcpc_ep_ci ci[USABLE_CI];
-
-	/*! Internal use: if a function keeps an fsm_notify for later dispatch while already clearing or re-using the
-	 * ci[], the fsm_notify should be kept here to also get canceled by osmo_mgcpc_ep_cancel_notify(). */
-	struct llist_head background_notify;
-};
-
-const struct value_string osmo_mgcp_verb_names[] = {
-	{ MGCP_VERB_CRCX, "CRCX" },
-	{ MGCP_VERB_MDCX, "MDCX" },
-	{ MGCP_VERB_DLCX, "DLCX" },
-	{ MGCP_VERB_AUEP, "AUEP" },
-	{ MGCP_VERB_RSIP, "RSIP" },
-	{}
-};
-
-static void osmo_mgcpc_ep_count(struct osmo_mgcpc_ep *ep, int *occupied, int *pending_not_sent,
-				int *waiting_for_response);
-
-static struct osmo_mgcpc_ep_ci *osmo_mgcpc_ep_check_ci(struct osmo_mgcpc_ep_ci *ci)
-{
-	if (!ci)
-		return NULL;
-	if (!ci->ep)
-		return NULL;
-	if (ci < ci->ep->ci || ci >= &ci->ep->ci[USABLE_CI])
-		return NULL;
-	return ci;
-}
-
-static struct osmo_mgcpc_ep_ci *osmo_mgcpc_ep_ci_for_event(struct osmo_mgcpc_ep *ep, uint32_t event)
-{
-	int idx;
-	if (event < FIRST_CI_EVENT)
-		return NULL;
-	idx = EV_TO_CI_IDX(event);
-	if (idx >= sizeof(ep->ci))
-		return NULL;
-	return osmo_mgcpc_ep_check_ci(&ep->ci[idx]);
-}
-
-const char *osmo_mgcpc_ep_name(const struct osmo_mgcpc_ep *ep)
-{
-	if (!ep)
-		return "NULL";
-	if (ep->endpoint[0])
-		return ep->endpoint;
-	return osmo_fsm_inst_name(ep->fi);
-}
-
-const char *mgcp_conn_peer_name(const struct mgcp_conn_peer *info)
-{
-	/* I'd be fine with a smaller buffer and accept truncation, but gcc possibly refuses to build if
-	 * this buffer is too small. */
-	static char buf[1024];
-
-	if (!info)
-		return "NULL";
-
-	if (info->endpoint[0]
-	    && info->addr[0])
-		snprintf(buf, sizeof(buf), "%s:%s:%u",
-			 info->endpoint, info->addr, info->port);
-	else if (info->endpoint[0])
-		snprintf(buf, sizeof(buf), "%s", info->endpoint);
-	else if (info->addr[0])
-		snprintf(buf, sizeof(buf), "%s:%u", info->addr, info->port);
-	else
-		return "empty";
-	return buf;
-}
-
-const char *osmo_mgcpc_ep_ci_name(const struct osmo_mgcpc_ep_ci *ci)
-{
-	const struct mgcp_conn_peer *rtp_info;
-
-	if (!ci)
-		return "NULL";
-
-	rtp_info = osmo_mgcpc_ep_ci_get_rtp_info(ci);
-
-	if (rtp_info)
-		return mgcp_conn_peer_name(rtp_info);
-	return osmo_mgcpc_ep_name(ci->ep);
-}
-
-const char *osmo_mgcpc_ep_ci_id(const struct osmo_mgcpc_ep_ci *ci)
-{
-	if (!ci || !ci->mgcp_ci_str[0])
-		return NULL;
-	return ci->mgcp_ci_str;
-}
-
-static struct value_string osmo_mgcpc_ep_fsm_event_names[33] = {};
-
-static char osmo_mgcpc_ep_fsm_event_name_bufs[32][32] = {};
-
-static void fill_event_names()
-{
-	int i;
-	for (i = 0; i < (ARRAY_SIZE(osmo_mgcpc_ep_fsm_event_names) - 1); i++) {
-		if (i < _OSMO_MGCPC_EP_EV_LAST)
-			continue;
-		if (i < FIRST_CI_EVENT || EV_TO_CI_IDX(i) > USABLE_CI) {
-			osmo_mgcpc_ep_fsm_event_names[i] = (struct value_string){i, "Unused"};
-			continue;
-		}
-		snprintf(osmo_mgcpc_ep_fsm_event_name_bufs[i], sizeof(osmo_mgcpc_ep_fsm_event_name_bufs[i]),
-			 "MGW Response for CI #%d", EV_TO_CI_IDX(i));
-		osmo_mgcpc_ep_fsm_event_names[i] = (struct value_string){i, osmo_mgcpc_ep_fsm_event_name_bufs[i]};
-	}
-}
-
-/* T_defs is used to obtain an (Osmocom specific) T2427001: timeout for an MGCP response (note, 2427 corresponds to the
- * default MGCP port in osmo-mgw). */
-static __attribute__((constructor)) void osmo_mgcpc_ep_fsm_init()
-{
-	OSMO_ASSERT(osmo_fsm_register(&osmo_mgcpc_ep_fsm) == 0);
-	fill_event_names();
-}
-
-struct osmo_mgcpc_ep *osmo_mgcpc_ep_fi_mgwep(struct osmo_fsm_inst *fi)
-{
-	OSMO_ASSERT(fi);
-	OSMO_ASSERT(fi->fsm == &osmo_mgcpc_ep_fsm);
-	OSMO_ASSERT(fi->priv);
-	return fi->priv;
-}
-
-/*! Allocate an osmo_mgcpc_ep FSM.
- * MGCP messages to set up the endpoint will be sent on the given mgcp_client, as soon as the first
- * osmo_mgcpc_ep_ci_request() is invoked.
- *
- * IMPORTANT: To avoid use-after-free problems, using this FSM requires use of deferred FSM deallocation using
- * osmo_fsm_set_dealloc_ctx(), e.g. using osmo_select_main_ctx(OTC_SELECT) with osmo_select_main_ctx() as main loop.
- *
- * A typical sequence of events would be:
- *
- *    ep = osmo_mgcpc_ep_alloc(..., mgcp_client_rtpbridge_wildcard(client));
- *    ci_to_ran = osmo_mgcpc_ep_ci_add(ep);
- *    osmo_mgcpc_ep_ci_request(ci_to_ran, MGCP_VERB_CRCX, verb_info,
- *                             my_call_fsm, MY_EVENT_MGCP_OK, MY_EVENT_MGCP_FAIL);
- *    ci_to_cn = osmo_mgcpc_ep_ci_add(ep);
- *    osmo_mgcpc_ep_ci_request(ci_to_cn, MGCP_VERB_CRCX, verb_info,
- *                             my_call_fsm, MY_EVENT_MGCP_OK, MY_EVENT_MGCP_FAIL);
- *    ...
- *    osmo_mgcpc_ep_ci_request(ci_to_ran, MGCP_VERB_MDCX, ...);
- *    ...
- *    osmo_mgcpc_ep_clear(ep);
- *    ep = NULL;
- *
- * \param parent  Parent FSM.
- * \param parent_term_event  Event to dispatch to the parent on termination of this FSM instance.
- * \param mgcp_client  Connection to the MGW.
- * \param T_defs  Timeout definitions to be used for FSM states, see osmo_mgcpc_ep_fsm_timeouts.
- * \param fsm_id  FSM instance ID.
- * \param endpoint_str_fmt  The endpoint string format to send to the MGW upon the first CRCX.
- *                          See mgcp_client_rtpbridge_wildcard() for "rtpbridge" endpoints.
- */
-struct osmo_mgcpc_ep *osmo_mgcpc_ep_alloc(struct osmo_fsm_inst *parent, uint32_t parent_term_event,
-					  struct mgcp_client *mgcp_client,
-					  const struct osmo_tdef *T_defs,
-					  const char *fsm_id,
-					  const char *endpoint_str_fmt, ...)
-{
-	va_list ap;
-	struct osmo_fsm_inst *fi;
-	struct osmo_mgcpc_ep *ep;
-	int rc;
-
-	if (!mgcp_client)
-		return NULL;
-
-	fi = osmo_fsm_inst_alloc_child(&osmo_mgcpc_ep_fsm, parent, parent_term_event);
-	OSMO_ASSERT(fi);
-
-	osmo_fsm_inst_update_id(fi, fsm_id);
-
-	ep = talloc_zero(fi, struct osmo_mgcpc_ep);
-	OSMO_ASSERT(ep);
-
-	*ep = (struct osmo_mgcpc_ep){
-		.mgcp_client = mgcp_client,
-		.fi = fi,
-		.T_defs = T_defs,
-	};
-	INIT_LLIST_HEAD(&ep->background_notify);
-	fi->priv = ep;
-
-	va_start(ap, endpoint_str_fmt);
-	rc = vsnprintf(ep->endpoint, sizeof(ep->endpoint), endpoint_str_fmt ? : "", ap);
-	va_end(ap);
-
-	if (rc <= 0 || rc >= sizeof(ep->endpoint)) {
-		LOG_MGCPC_EP(ep, LOGL_ERROR, "Endpoint name too long or too short: %s\n",
-			  ep->endpoint);
-		osmo_fsm_inst_term(ep->fi, OSMO_FSM_TERM_ERROR, 0);
-		return NULL;
-	}
-
-	return ep;
-}
-
-/*! Add a connection to an endpoint.
- * Allocate a connection identifier slot in the osmo_mgcpc_ep instance, do not yet dispatch a CRCX.
- * The CRCX is dispatched only upon the first osmo_mgcpc_ep_ci_request().
- * \param ep  Parent endpoint instance.
- * \param label_fmt  Label for logging.
- */
-struct osmo_mgcpc_ep_ci *osmo_mgcpc_ep_ci_add(struct osmo_mgcpc_ep *ep,
-					      const char *label_fmt, ...)
-{
-	va_list ap;
-	int i;
-	struct osmo_mgcpc_ep_ci *ci;
-
-	for (i = 0; i < USABLE_CI; i++) {
-		ci = &ep->ci[i];
-
-		if (ci->occupied || ci->mgcp_client_fi)
-			continue;
-
-		*ci = (struct osmo_mgcpc_ep_ci){
-			.ep = ep,
-			.occupied = true,
-		};
-		if (label_fmt) {
-			va_start(ap, label_fmt);
-			vsnprintf(ci->label, sizeof(ci->label), label_fmt, ap);
-			va_end(ap);
-		}
-		return ci;
-	}
-
-	LOG_MGCPC_EP(ep, LOGL_ERROR,
-		  "Cannot allocate another endpoint, all "
-		  OSMO_STRINGIFY_VAL(USABLE_CI) " are in use\n");
-
-	return NULL;
-}
-
-static bool osmo_mgcpc_ep_fsm_check_state_chg_after_response(struct osmo_fsm_inst *fi);
-
-static void on_failure(struct osmo_mgcpc_ep_ci *ci)
-{
-	struct osmo_mgcpc_ep *ep = ci->ep;
-	struct fsm_notify notify;
-	int i;
-
-	if (!ci->occupied)
-		return;
-
-	/* When dispatching an event for this CI, the user may decide to trigger the next request for this conn right
-	 * away. So we must be ready with a cleared *ci. Store the notify separately and clear before dispatching. */
-	notify = ci->notify;
-	/* Register the planned notification in ep->background_notify so we also catch any osmo_mgcpc_ep_cancel_notify()
-	 * that might be triggered between clearing the ci and actually dispatching the event. */
-	llist_add(&notify.entry, &ep->background_notify);
-
-	*ci = (struct osmo_mgcpc_ep_ci){
-		.ep = ci->ep,
-	};
-
-	/* An MGCP failure typically means the endpoint becomes unusable, cancel all pending request (except DLCX).
-	 * Particularly, if two CRCX were scheduled and the first fails, we must no longer dispatch the second CRCX. */
-	for (i = 0; i < ARRAY_SIZE(ep->ci); i++) {
-		struct osmo_mgcpc_ep_ci *other_ci = &ep->ci[i];
-		if (other_ci == ci)
-			continue;
-		if (!other_ci->occupied)
-			continue;
-		if (!other_ci->pending)
-			continue;
-		if (other_ci->sent)
-			continue;
-		if (other_ci->verb == MGCP_VERB_DLCX)
-			continue;
-		/* Just clear the pending request, don't fire more events than below. */
-		other_ci->pending = false;
-	}
-
-	/* If this check has terminated the FSM instance, don't fire any more events to prevent use-after-free problems.
-	 * The endpoint FSM does dispatch a term event to its parent, and everything should be cleaned like that. */
-	if (!osmo_mgcpc_ep_fsm_check_state_chg_after_response(ep->fi)) {
-		/* The ep has deallocated, no need to llist_del(&notify.entry) here. */
-		return;
-	}
-
-	if (notify.fi)
-		osmo_fsm_inst_dispatch(notify.fi, notify.failure, notify.data);
-
-	llist_del(&notify.entry);
-}
-
-static int update_endpoint_name(struct osmo_mgcpc_ep_ci *ci, const char *new_endpoint_name)
-{
-	struct osmo_mgcpc_ep *ep = ci->ep;
-	int rc;
-	int i;
-
-	if (!strcmp(ep->endpoint, new_endpoint_name)) {
-		/* Same endpoint name, nothing to do. */
-		return 0;
-	}
-
-	/* The endpoint name should only change on the very first CRCX response. */
-	if (ep->first_crcx_complete) {
-		LOG_CI(ci, LOGL_ERROR, "Reponse returned mismatching endpoint name."
-		       " This is endpoint %s, instead received %s\n",
-		       ep->endpoint, new_endpoint_name);
-		on_failure(ci);
-		return -EINVAL;
-	}
-
-	/* This is the first CRCX response, update endpoint name. */
-	rc = OSMO_STRLCPY_ARRAY(ep->endpoint, new_endpoint_name);
-	if (rc <= 0 || rc >= sizeof(ep->endpoint)) {
-		LOG_CI(ci, LOGL_ERROR, "Unable to copy endpoint name %s\n", osmo_quote_str(new_endpoint_name, -1));
-		osmo_mgcpc_ep_ci_dlcx(ci);
-		on_failure(ci);
-		return -ENOSPC;
-	}
-
-	/* Make sure already pending requests use this updated endpoint name. */
-	for (i = 0; i < ARRAY_SIZE(ep->ci); i++) {
-		struct osmo_mgcpc_ep_ci *other_ci = &ep->ci[i];
-		if (!other_ci->occupied)
-			continue;
-		if (!other_ci->pending)
-			continue;
-		if (other_ci->sent)
-			continue;
-		OSMO_STRLCPY_ARRAY(other_ci->verb_info.endpoint, ep->endpoint);
-	}
-	return 0;
-}
-
-static void on_success(struct osmo_mgcpc_ep_ci *ci, void *data)
-{
-	struct mgcp_conn_peer *rtp_info;
-
-	if (!ci->occupied)
-		return;
-
-	ci->pending = false;
-
-	switch (ci->verb) {
-	case MGCP_VERB_CRCX:
-		/* If we sent a wildcarded endpoint name on CRCX, we need to store the resulting endpoint
-		 * name here. Also, we receive the MGW's RTP port information. */
-		rtp_info = data;
-		OSMO_ASSERT(rtp_info);
-		ci->got_port_info = true;
-		ci->rtp_info = *rtp_info;
-		osmo_strlcpy(ci->mgcp_ci_str, mgcp_conn_get_ci(ci->mgcp_client_fi),
-			sizeof(ci->mgcp_ci_str));
-		if (rtp_info->endpoint[0]) {
-			/* On errors, this instance might already be deallocated. Make sure to not access anything after
-			 * error. */
-			if (update_endpoint_name(ci, rtp_info->endpoint))
-				return;
-		}
-		ci->ep->first_crcx_complete = true;
-		break;
-
-	default:
-		break;
-	}
-
-	LOG_CI(ci, LOGL_DEBUG, "received successful response to %s: RTP=%s%s\n",
-	       osmo_mgcp_verb_name(ci->verb),
-	       mgcp_conn_peer_name(ci->got_port_info? &ci->rtp_info : NULL),
-	       ci->notify.fi ? "" : " (not sending a notification)");
-
-	if (ci->notify.fi)
-		osmo_fsm_inst_dispatch(ci->notify.fi, ci->notify.success, ci->notify.data);
-
-	osmo_mgcpc_ep_fsm_check_state_chg_after_response(ci->ep->fi);
-}
-
-/*! 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);
-	if (!ci)
-		return NULL;
-	if (!ci->got_port_info)
-		return NULL;
-	return &ci->rtp_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)
-{
-	const struct mgcp_conn_peer *rtp_info;
-	struct sockaddr_in *sin;
-
-	rtp_info = osmo_mgcpc_ep_ci_get_rtp_info(ci);
-	if (!rtp_info)
-		return false;
-
-        sin = (struct sockaddr_in *)dest;
-
-        sin->sin_family = AF_INET;
-        sin->sin_addr.s_addr = inet_addr(rtp_info->addr);
-        sin->sin_port = osmo_ntohs(rtp_info->port);
-	return true;
-}
-
-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 *rtp_info;
-
-	rtp_info = osmo_mgcpc_ep_ci_get_rtp_info(ci);
-	if (!rtp_info)
-		return false;
-
-	if (!rtp_info->x_osmo_osmux_use)
-		return false;
-
-	*cid = rtp_info->x_osmo_osmux_cid;
-	return true;
-}
-
-static const struct osmo_tdef_state_timeout osmo_mgcpc_ep_fsm_timeouts[32] = {
-	[OSMO_MGCPC_EP_ST_WAIT_MGW_RESPONSE] = { .T=2427001 },
-};
-
-/* Transition to a state, using the T timer defined in assignment_fsm_timeouts.
- * The actual timeout value is in turn obtained from osmo_mgcpc_ep.T_defs.
- * Assumes local variable fi exists. */
-#define osmo_mgcpc_ep_fsm_state_chg(state) \
-	osmo_tdef_fsm_inst_state_chg(fi, state, osmo_mgcpc_ep_fsm_timeouts, \
-				     ((struct osmo_mgcpc_ep*)fi->priv)->T_defs, 5)
-
-/*! Dispatch an actual CRCX/MDCX/DLCX message for this connection.
- *
- * If the 'notify' instance deallocates before it received a notification of event_success or event_failure,
- * osmo_mgcpc_ep_ci_cancel_notify() or osmo_mgcpc_ep_cancel_notify() must be called. It is not harmful to cancel
- * notification after an event has been received.
- *
- * \param ci  Connection identifier as obtained from osmo_mgcpc_ep_ci_add().
- * \param verb  MGCP operation to dispatch.
- * \param verb_info  Parameters for the MGCP operation.
- * \param notify  Peer FSM instance to notify of completed/failed operation.
- * \param event_success  Which event to dispatch to 'notify' upon OK response.
- * \param event_failure  Which event to dispatch to 'notify' upon failure response.
- * \param notify_data  Data pointer to pass to the event dispatch for both success and failure.
- */
-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,
-			      uint32_t event_success, uint32_t event_failure,
-			      void *notify_data)
-{
-	struct osmo_mgcpc_ep *ep;
-	struct osmo_fsm_inst *fi;
-	struct osmo_mgcpc_ep_ci cleared_ci;
-	ci = osmo_mgcpc_ep_check_ci(ci);
-
-	if (!ci) {
-		LOGP(DLGLOBAL, LOGL_ERROR, "Invalid MGW endpoint request: no ci\n");
-		goto dispatch_error;
-	}
-	if (!verb_info && verb != MGCP_VERB_DLCX) {
-		LOG_CI(ci, LOGL_ERROR, "Invalid MGW endpoint request: missing verb details for %s\n",
-		       osmo_mgcp_verb_name(verb));
-		goto dispatch_error;
-	}
-	if ((verb < 0) || (verb > MGCP_VERB_RSIP)) {
-		LOG_CI(ci, LOGL_ERROR, "Invalid MGW endpoint request: unknown verb: %s\n",
-		       osmo_mgcp_verb_name(verb));
-		goto dispatch_error;
-	}
-
-	ep = ci->ep;
-	fi = ep->fi;
-
-	/* Clear volatile state by explicitly keeping those that should remain. Because we can't assign
-	 * the char[] directly, dance through cleared_ci and copy back. */
-	cleared_ci = (struct osmo_mgcpc_ep_ci){
-		.ep = ep,
-		.mgcp_client_fi = ci->mgcp_client_fi,
-		.got_port_info = ci->got_port_info,
-		.rtp_info = ci->rtp_info,
-
-		.occupied = true,
-		/* .pending = true follows below */
-		.verb = verb,
-		.notify = {
-			.fi = notify,
-			.success = event_success,
-			.failure = event_failure,
-			.data = notify_data,
-		}
-	};
-	osmo_strlcpy(cleared_ci.label, ci->label, sizeof(cleared_ci.label));
-	osmo_strlcpy(cleared_ci.mgcp_ci_str, ci->mgcp_ci_str, sizeof(cleared_ci.mgcp_ci_str));
-	*ci = cleared_ci;
-
-	LOG_CI_VERB(ci, LOGL_DEBUG, "notify=%s\n", osmo_fsm_inst_name(ci->notify.fi));
-
-	if (verb_info)
-		ci->verb_info = *verb_info;
-
-	if (ep->endpoint[0]) {
-		if (ci->verb_info.endpoint[0] && strcmp(ci->verb_info.endpoint, ep->endpoint))
-			LOG_CI(ci, LOGL_ERROR,
-			       "Warning: Requested %s on endpoint %s, but this CI is on endpoint %s."
-			       " Using the proper endpoint instead.\n",
-			       osmo_mgcp_verb_name(verb), ci->verb_info.endpoint, ep->endpoint);
-		osmo_strlcpy(ci->verb_info.endpoint, ep->endpoint, sizeof(ci->verb_info.endpoint));
-	}
-
-	switch (ci->verb) {
-	case MGCP_VERB_CRCX:
-		if (ci->mgcp_client_fi) {
-			LOG_CI(ci, LOGL_ERROR, "CRCX can be called only once per MGW endpoint CI\n");
-			on_failure(ci);
-			return;
-		}
-		break;
-
-	case MGCP_VERB_MDCX:
-		if (!ci->mgcp_client_fi) {
-			LOG_CI_VERB(ci, LOGL_ERROR, "The first verb on an unused MGW endpoint CI must be CRCX, not %s\n",
-				    osmo_mgcp_verb_name(ci->verb));
-			on_failure(ci);
-			return;
-		}
-		break;
-
-	case MGCP_VERB_DLCX:
-		if (!ci->mgcp_client_fi) {
-			LOG_CI_VERB(ci, LOGL_DEBUG, "Ignoring DLCX on unused MGW endpoint CI\n");
-			return;
-		}
-		break;
-
-	default:
-		LOG_CI(ci, LOGL_ERROR, "This verb is not supported: %s\n", osmo_mgcp_verb_name(ci->verb));
-		on_failure(ci);
-		return;
-	}
-
-	ci->pending = true;
-
-	LOG_CI_VERB(ci, LOGL_DEBUG, "Scheduling\n");
-
-	if (ep->fi->state != OSMO_MGCPC_EP_ST_WAIT_MGW_RESPONSE)
-		osmo_mgcpc_ep_fsm_state_chg(OSMO_MGCPC_EP_ST_WAIT_MGW_RESPONSE);
-
-	return;
-dispatch_error:
-	if (notify)
-		osmo_fsm_inst_dispatch(notify, event_failure, notify_data);
-}
-
-/*! No longer notify for any state changes for any conns of this endpoint.
- * Useful if the notify instance passed to osmo_mgcpc_ep_ci_request() is about to deallocate.
- * \param ep  The endpoint FSM instance.
- * \param notify  Which target to cancel notification for, if NULL cancel all notifications. */
-void osmo_mgcpc_ep_cancel_notify(struct osmo_mgcpc_ep *ep, struct osmo_fsm_inst *notify)
-{
-	struct fsm_notify *n;
-	int i;
-	for (i = 0; i < ARRAY_SIZE(ep->ci); i++) {
-		struct osmo_mgcpc_ep_ci *ci = &ep->ci[i];
-		if (!notify || ci->notify.fi == notify)
-			ci->notify.fi = NULL;
-	}
-	llist_for_each_entry(n, &ep->background_notify, entry) {
-		if (!notify || n->fi == notify)
-			n->fi = NULL;
-	}
-
-}
-
-/* Return the osmo_mgcpc_ep that this conn belongs to. */
-struct osmo_mgcpc_ep *osmo_mgcpc_ep_ci_ep(struct osmo_mgcpc_ep_ci *conn)
-{
-	if (!conn)
-		return NULL;
-	return conn->ep;
-}
-
-static int send_verb(struct osmo_mgcpc_ep_ci *ci)
-{
-	int rc;
-	struct osmo_mgcpc_ep *ep = ci->ep;
-	struct fsm_notify notify;
-
-	if (!ci->occupied || !ci->pending || ci->sent)
-		return 0;
-
-	switch (ci->verb) {
-
-	case MGCP_VERB_CRCX:
-		OSMO_ASSERT(!ci->mgcp_client_fi);
-		LOG_CI_VERB(ci, LOGL_DEBUG, "Sending\n");
-		ci->mgcp_client_fi = mgcp_conn_create(ep->mgcp_client, ep->fi,
-						      CI_EV_FAILURE(ci), CI_EV_SUCCESS(ci),
-						      &ci->verb_info);
-		ci->sent = true;
-		if (!ci->mgcp_client_fi){
-			LOG_CI_VERB(ci, LOGL_ERROR, "Cannot send\n");
-			on_failure(ci);
-			return -EINVAL;
-		}
-		osmo_fsm_inst_update_id(ci->mgcp_client_fi, ci->label);
-		break;
-
-	case MGCP_VERB_MDCX:
-		OSMO_ASSERT(ci->mgcp_client_fi);
-		LOG_CI_VERB(ci, LOGL_DEBUG, "Sending\n");
-		rc = mgcp_conn_modify(ci->mgcp_client_fi, CI_EV_SUCCESS(ci), &ci->verb_info);
-		ci->sent = true;
-		if (rc) {
-			LOG_CI_VERB(ci, LOGL_ERROR, "Cannot send (rc=%d %s)\n", rc, strerror(-rc));
-			on_failure(ci);
-			return -EINVAL;
-		}
-		break;
-
-	case MGCP_VERB_DLCX:
-		LOG_CI(ci, LOGL_DEBUG, "Sending MGCP: %s %s\n",
-		       osmo_mgcp_verb_name(ci->verb), ci->mgcp_ci_str);
-		/* The way this is designed, we actually need to forget all about the ci right away. */
-		mgcp_conn_delete(ci->mgcp_client_fi);
-		notify = ci->notify;
-		*ci = (struct osmo_mgcpc_ep_ci){
-			.ep = ep,
-		};
-		/* When dispatching an event for this CI, the user may decide to trigger the next request for this conn
-		 * right away. So we must be ready with a cleared *ci. */
-		if (notify.fi)
-			osmo_fsm_inst_dispatch(notify.fi, notify.success, notify.data);
-		break;
-
-	default:
-		OSMO_ASSERT(false);
-	}
-
-	return 1;
-}
-
-/*! DLCX all connections, terminate the endpoint FSM and free. */
-void osmo_mgcpc_ep_clear(struct osmo_mgcpc_ep *ep)
-{
-	if (!ep)
-		return;
-	osmo_mgcpc_ep_cancel_notify(ep, NULL);
-	osmo_fsm_inst_term(ep->fi, OSMO_FSM_TERM_REGULAR, 0);
-}
-
-static void osmo_mgcpc_ep_count(struct osmo_mgcpc_ep *ep, int *occupied, int *pending_not_sent,
-				int *waiting_for_response)
-{
-	int i;
-
-	if (occupied)
-		*occupied = 0;
-
-	if (pending_not_sent)
-		*pending_not_sent = 0;
-
-	if (waiting_for_response)
-		*waiting_for_response = 0;
-
-	for (i = 0; i < ARRAY_SIZE(ep->ci); i++) {
-		struct osmo_mgcpc_ep_ci *ci = &ep->ci[i];
-		if (ci->occupied) {
-			if (occupied)
-				(*occupied)++;
-		} else
-			continue;
-
-		if (ci->pending)
-			LOG_CI_VERB(ci, LOGL_DEBUG, "%s\n",
-				    ci->sent ? "waiting for response" : "waiting to be sent");
-		else
-			LOG_CI_VERB(ci, LOGL_DEBUG, "done (%s)\n", mgcp_conn_peer_name(osmo_mgcpc_ep_ci_get_rtp_info(ci)));
-
-		if (ci->pending && ci->sent)
-			if (waiting_for_response)
-				(*waiting_for_response)++;
-		if (ci->pending && !ci->sent)
-			if (pending_not_sent)
-				(*pending_not_sent)++;
-	}
-}
-
-static bool osmo_mgcpc_ep_fsm_check_state_chg_after_response(struct osmo_fsm_inst *fi)
-{
-	int waiting_for_response;
-	int occupied;
-	struct osmo_mgcpc_ep *ep = osmo_mgcpc_ep_fi_mgwep(fi);
-
-	osmo_mgcpc_ep_count(ep, &occupied, NULL, &waiting_for_response);
-	LOG_MGCPC_EP(ep, LOGL_DEBUG, "CI in use: %d, waiting for response: %d\n", occupied, waiting_for_response);
-
-	if (!occupied)  {
-		/* All CI have been released. The endpoint no longer exists. Notify the parent FSM, by
-		 * terminating. */
-		osmo_fsm_inst_term(fi, OSMO_FSM_TERM_REGULAR, 0);
-		return false;
-	}
-
-	if (!waiting_for_response) {
-		if (fi->state != OSMO_MGCPC_EP_ST_IN_USE)
-			osmo_mgcpc_ep_fsm_state_chg(OSMO_MGCPC_EP_ST_IN_USE);
-	}
-
-	return true;
-}
-
-static void osmo_mgcpc_ep_fsm_wait_mgw_response_onenter(struct osmo_fsm_inst *fi, uint32_t prev_state)
-{
-	static int re_enter = 0;
-	int rc;
-	int count = 0;
-	int i;
-	struct osmo_mgcpc_ep *ep = osmo_mgcpc_ep_fi_mgwep(fi);
-
-	re_enter++;
-	OSMO_ASSERT(re_enter < 10);
-
-	/* The first CRCX gives us the endpoint name in the CRCX response. So we must wait for the first CRCX endpoint
-	 * response to come in before sending any other MGCP requests -- otherwise we might end up creating new
-	 * endpoints instead of acting on the same. This FSM always sends out N requests and waits for all of them to
-	 * complete before sending out new requests. Hence we're safe when the very first time at most one request is
-	 * sent (which needs to be a CRCX). */
-
-	for (i = 0; i < ARRAY_SIZE(ep->ci); i++) {
-		struct osmo_mgcpc_ep_ci *ci = &ep->ci[i];
-
-		/* Make sure that only CRCX get dispatched if no CRCX were sent yet. */
-		if (!ep->first_crcx_complete) {
-			if (ci->occupied && ci->verb != MGCP_VERB_CRCX)
-				continue;
-		}
-
-		rc = send_verb(&ep->ci[i]);
-		/* Need to be careful not to access the instance after failure. Event chains may already have
-		 * deallocated this memory. */
-		if (rc < 0)
-			return;
-		if (!rc)
-			continue;
-		count++;
-		/* Make sure that we wait for the first CRCX response before dispatching more requests. */
-		if (!ep->first_crcx_complete)
-			break;
-	}
-
-	LOG_MGCPC_EP(ep, LOGL_DEBUG, "Sent messages: %d\n", count);
-	if (ep->first_crcx_complete)
-		osmo_mgcpc_ep_fsm_check_state_chg_after_response(fi);
-	re_enter--;
-}
-
-static void osmo_mgcpc_ep_fsm_handle_ci_events(struct osmo_fsm_inst *fi, uint32_t event, void *data)
-{
-	struct osmo_mgcpc_ep_ci *ci;
-	struct osmo_mgcpc_ep *ep = osmo_mgcpc_ep_fi_mgwep(fi);
-	ci = osmo_mgcpc_ep_ci_for_event(ep, event);
-	if (ci) {
-		if (event == CI_EV_SUCCESS(ci))
-			on_success(ci, data);
-		else
-			on_failure(ci);
-	}
-}
-
-static void osmo_mgcpc_ep_fsm_in_use_onenter(struct osmo_fsm_inst *fi, uint32_t prev_state)
-{
-	int pending_not_sent;
-	struct osmo_mgcpc_ep *ep = osmo_mgcpc_ep_fi_mgwep(fi);
-
-	osmo_mgcpc_ep_count(ep, NULL, &pending_not_sent, NULL);
-	if (pending_not_sent)
-		osmo_mgcpc_ep_fsm_state_chg(OSMO_MGCPC_EP_ST_WAIT_MGW_RESPONSE);
-}
-
-#define S(x)	(1 << (x))
-
-static const struct osmo_fsm_state osmo_mgcpc_ep_fsm_states[] = {
-	[OSMO_MGCPC_EP_ST_UNUSED] = {
-		.name = "UNUSED",
-		.in_event_mask = 0,
-		.out_state_mask = 0
-			| S(OSMO_MGCPC_EP_ST_WAIT_MGW_RESPONSE)
-			,
-	},
-	[OSMO_MGCPC_EP_ST_WAIT_MGW_RESPONSE] = {
-		.name = "WAIT_MGW_RESPONSE",
-		.onenter = osmo_mgcpc_ep_fsm_wait_mgw_response_onenter,
-		.action = osmo_mgcpc_ep_fsm_handle_ci_events,
-		.in_event_mask = 0xffffffff,
-		.out_state_mask = 0
-			| S(OSMO_MGCPC_EP_ST_IN_USE)
-			,
-	},
-	[OSMO_MGCPC_EP_ST_IN_USE] = {
-		.name = "IN_USE",
-		.onenter = osmo_mgcpc_ep_fsm_in_use_onenter,
-		.action = osmo_mgcpc_ep_fsm_handle_ci_events,
-		.in_event_mask = 0xffffffff, /* mgcp_client_fsm may send parent term anytime */
-		.out_state_mask = 0
-			| S(OSMO_MGCPC_EP_ST_WAIT_MGW_RESPONSE)
-			,
-	},
-};
-
-static int osmo_mgcpc_ep_fsm_timer_cb(struct osmo_fsm_inst *fi)
-{
-	int i;
-	struct osmo_mgcpc_ep *ep = osmo_mgcpc_ep_fi_mgwep(fi);
-
-	switch (fi->T) {
-	default:
-		for (i = 0; i < ARRAY_SIZE(ep->ci); i++) {
-			struct osmo_mgcpc_ep_ci *ci = &ep->ci[i];
-			if (!ci->occupied)
-				continue;
-			if (!(ci->pending && ci->sent))
-				continue;
-			on_failure(ci);
-		}
-		return 0;
-	}
-
-	return 0;
-}
-
-static struct osmo_fsm osmo_mgcpc_ep_fsm = {
-	.name = "mgw-endp",
-	.states = osmo_mgcpc_ep_fsm_states,
-	.num_states = ARRAY_SIZE(osmo_mgcpc_ep_fsm_states),
-	.log_subsys = DLMGCP,
-	.event_names = osmo_mgcpc_ep_fsm_event_names,
-	.timer_cb = osmo_mgcpc_ep_fsm_timer_cb,
-	/* 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
@@ -114,23 +114,16 @@ static void make_crcx_msg(struct mgcp_msg *mgcp_msg, struct mgcp_conn_peer *info
 		.conn_mode = MGCP_CONN_RECV_ONLY,
 		.ptime = info->ptime,
 		.codecs_len = info->codecs_len,
-		.ptmap_len = info->ptmap_len,
-		.param_present = info->param_present
+		.ptmap_len = info->ptmap_len
 	};
 	osmo_strlcpy(mgcp_msg->endpoint, info->endpoint, MGCP_ENDPOINT_MAXLEN);
 	memcpy(mgcp_msg->codecs, info->codecs, sizeof(mgcp_msg->codecs));
 	memcpy(mgcp_msg->ptmap, info->ptmap, sizeof(mgcp_msg->ptmap));
-	memcpy(&mgcp_msg->param, &info->param, sizeof(mgcp_msg->param));

 	if (info->x_osmo_ign) {
 		mgcp_msg->x_osmo_ign = info->x_osmo_ign;
 		mgcp_msg->presence |= MGCP_MSG_PRESENCE_X_OSMO_IGN;
 	}
-
-	if (info->x_osmo_osmux_use) {
-		mgcp_msg->x_osmo_osmux_cid = info->x_osmo_osmux_cid;
-		mgcp_msg->presence |= MGCP_MSG_PRESENCE_X_OSMO_OSMUX_CID;
-	}
 }

 static void add_audio(struct mgcp_msg *mgcp_msg, struct mgcp_conn_peer *info)
@@ -141,13 +134,6 @@ static void add_audio(struct mgcp_msg *mgcp_msg, struct mgcp_conn_peer *info)
 	mgcp_msg->conn_mode = MGCP_CONN_RECV_SEND;
 }

-static void set_conn_mode(struct mgcp_msg *mgcp_msg, struct mgcp_conn_peer *peer)
-{
-	enum mgcp_connection_mode conn_mode = peer->conn_mode;
-	if (conn_mode != MGCP_CONN_NONE)
-		mgcp_msg->conn_mode = conn_mode;
-}
-
 static struct msgb *make_mdcx_msg(struct mgcp_ctx *mgcp_ctx)
 {
 	struct mgcp_msg mgcp_msg;
@@ -163,20 +149,11 @@ static struct msgb *make_mdcx_msg(struct mgcp_ctx *mgcp_ctx)
 		.audio_port = mgcp_ctx->conn_peer_local.port,
 		.ptime = mgcp_ctx->conn_peer_local.ptime,
 		.codecs_len = mgcp_ctx->conn_peer_local.codecs_len,
-		.ptmap_len = mgcp_ctx->conn_peer_local.ptmap_len,
-		.param_present = mgcp_ctx->conn_peer_local.param_present
+		.ptmap_len = mgcp_ctx->conn_peer_local.ptmap_len
 	};
 	osmo_strlcpy(mgcp_msg.endpoint, mgcp_ctx->conn_peer_remote.endpoint, MGCP_ENDPOINT_MAXLEN);
 	memcpy(mgcp_msg.codecs, mgcp_ctx->conn_peer_local.codecs, sizeof(mgcp_msg.codecs));
 	memcpy(mgcp_msg.ptmap, mgcp_ctx->conn_peer_local.ptmap, sizeof(mgcp_msg.ptmap));
-	memcpy(&mgcp_msg.param, &mgcp_ctx->conn_peer_local.param, sizeof(mgcp_ctx->conn_peer_local.param));
-
-	set_conn_mode(&mgcp_msg, &mgcp_ctx->conn_peer_local);
-
-	if (mgcp_ctx->conn_peer_local.x_osmo_osmux_use) {
-		mgcp_msg.x_osmo_osmux_cid = mgcp_ctx->conn_peer_local.x_osmo_osmux_cid;
-		mgcp_msg.presence |= MGCP_MSG_PRESENCE_X_OSMO_OSMUX_CID;
-	}

 	/* Note: We take the endpoint and the call_id from the remote
 	 * connection info, because we can be confident that the
@@ -222,8 +199,6 @@ static void fsm_crcx_cb(struct osmo_fsm_inst *fi, uint32_t event, void *data)
 		make_crcx_msg(&mgcp_msg, &mgcp_ctx->conn_peer_local);
 		if (mgcp_ctx->conn_peer_local.port)
 			add_audio(&mgcp_msg, &mgcp_ctx->conn_peer_local);
-		set_conn_mode(&mgcp_msg, &mgcp_ctx->conn_peer_local);
-
 		msg = mgcp_msg_gen(mgcp_ctx->mgcp, &mgcp_msg);
 		OSMO_ASSERT(msg);

@@ -280,11 +255,6 @@ static void mgw_crcx_resp_cb(struct mgcp_response *r, void *priv)
 		return;
 	}
 	LOGPFSML(fi, LOGL_DEBUG, "MGW/CRCX: MGW responded with address %s:%u\n", r->audio_ip, r->audio_port);
-	if (r->head.x_osmo_osmux_use) {
-		LOGPFSML(fi, LOGL_DEBUG, "MGW/CRCX: MGW responded using Osmux %u\n", r->head.x_osmo_osmux_cid);
-		mgcp_ctx->conn_peer_remote.x_osmo_osmux_use = true;
-		mgcp_ctx->conn_peer_remote.x_osmo_osmux_cid = r->head.x_osmo_osmux_cid;
-	}

 	osmo_strlcpy(mgcp_ctx->conn_peer_remote.addr, r->audio_ip, sizeof(mgcp_ctx->conn_peer_remote.addr));
 	mgcp_ctx->conn_peer_remote.port = r->audio_port;
@@ -404,12 +374,6 @@ static void mgw_mdcx_resp_cb(struct mgcp_response *r, void *priv)
 	}
 	LOGPFSML(fi, LOGL_DEBUG, "MGW/MDCX: MGW responded with address %s:%u\n", r->audio_ip, r->audio_port);

-	if (r->head.x_osmo_osmux_use) {
-		LOGPFSML(fi, LOGL_DEBUG, "MGW/CRCX: MGW responded using Osmux %u\n", r->head.x_osmo_osmux_cid);
-		mgcp_ctx->conn_peer_remote.x_osmo_osmux_use = true;
-		mgcp_ctx->conn_peer_remote.x_osmo_osmux_cid = r->head.x_osmo_osmux_cid;
-	}
-
 	osmo_strlcpy(mgcp_ctx->conn_peer_remote.addr, r->audio_ip, sizeof(mgcp_ctx->conn_peer_remote.addr));
 	mgcp_ctx->conn_peer_remote.port = r->audio_port;

@@ -525,10 +489,8 @@ static void fsm_cleanup_cb(struct osmo_fsm_inst *fi, enum osmo_fsm_term_cause ca
 		LOGPFSML(fi, LOGL_ERROR,
 			 "MGW/DLCX: abrupt 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");
-		else
-			mgcp_client_tx(mgcp, msg, NULL, NULL);
+		OSMO_ASSERT(msg);
+		mgcp_client_tx(mgcp, msg, NULL, NULL);
 	}

 	talloc_free(mgcp_ctx);
@@ -606,6 +568,7 @@ struct osmo_fsm_inst *mgcp_conn_create(struct mgcp_client *mgcp, struct osmo_fsm
 				       uint32_t parent_term_evt, uint32_t parent_evt, struct mgcp_conn_peer *conn_peer)
 {
 	struct mgcp_ctx *mgcp_ctx;
+	static bool fsm_registered = false;
 	struct osmo_fsm_inst *fi;
 	struct in_addr ip_test;

@@ -617,6 +580,12 @@ struct osmo_fsm_inst *mgcp_conn_create(struct mgcp_client *mgcp, struct osmo_fsm
 	if (conn_peer->port && inet_aton(conn_peer->addr, &ip_test) == 0)
 		return NULL;

+	/* Register the fsm description (if not already done) */
+	if (fsm_registered == false) {
+		osmo_fsm_register(&fsm_mgcp_client);
+		fsm_registered = true;
+	}
+
 	/* Allocate and configure a new fsm instance */
 	fi = osmo_fsm_inst_alloc_child(&fsm_mgcp_client, parent_fi, parent_term_evt);
 	OSMO_ASSERT(fi);
@@ -701,9 +670,6 @@ void mgcp_conn_delete(struct osmo_fsm_inst *fi)

 	OSMO_ASSERT(mgcp_ctx);

-	if (fi->proc.terminating)
-		return;
-
 	/* Unlink FSM from parent */
 	osmo_fsm_inst_unlink_parent(fi, NULL);

@@ -719,30 +685,3 @@ void mgcp_conn_delete(struct osmo_fsm_inst *fi)
 	}
 	osmo_fsm_inst_dispatch(fi, EV_DLCX, mgcp_ctx);
 }
-
-const char *osmo_mgcpc_conn_peer_name(const struct mgcp_conn_peer *info)
-{
-	/* I'd be fine with a smaller buffer and accept truncation, but gcc possibly refuses to build if
-	 * this buffer is too small. */
-	static char buf[1024];
-
-	if (!info)
-		return "NULL";
-
-	if (info->endpoint[0]
-	    && info->addr[0])
-		snprintf(buf, sizeof(buf), "%s:%s:%u",
-			 info->endpoint, info->addr, info->port);
-	else if (info->endpoint[0])
-		snprintf(buf, sizeof(buf), "%s", info->endpoint);
-	else if (info->addr[0])
-		snprintf(buf, sizeof(buf), "%s:%u", info->addr, info->port);
-	else
-		return "empty";
-	return buf;
-}
-
-static __attribute__((constructor)) void osmo_mgcp_client_fsm_init()
-{
-	OSMO_ASSERT(osmo_fsm_register(&fsm_mgcp_client) == 0);
-}
--- a/src/libosmo-mgcp/mgcp_codec.c
+++ b/src/libosmo-mgcp/mgcp_codec.c
@@ -56,8 +56,8 @@ void mgcp_codec_summary(struct mgcp_conn_rtp *conn)
 	endp = conn->conn->endp;

 	if (rtp->codecs_assigned == 0) {
-		LOGPENDP(endp, DLMGCP, LOGL_ERROR, "conn:%s no codecs available\n",
-			 mgcp_conn_dump(conn->conn));
+		LOGP(DLMGCP, LOGL_ERROR, "endpoint:0x%x conn:%s no codecs available\n", ENDPOINT_NUMBER(endp),
+		     mgcp_conn_dump(conn->conn));
 		return;
 	}

@@ -65,8 +65,8 @@ void mgcp_codec_summary(struct mgcp_conn_rtp *conn)
 	for (i = 0; i < rtp->codecs_assigned; i++) {
 		codec = &rtp->codecs[i];

-		LOGPENDP(endp, DLMGCP, LOGL_DEBUG, "conn:%s codecs[%u]:%s",
-			 mgcp_conn_dump(conn->conn), i, dump_codec(codec));
+		LOGP(DLMGCP, LOGL_DEBUG, "endpoint:0x%x conn:%s codecs[%u]:%s", ENDPOINT_NUMBER(endp),
+		     mgcp_conn_dump(conn->conn), i, dump_codec(codec));

 		if (codec == rtp->codec)
 			LOGPC(DLMGCP, LOGL_DEBUG, " [selected]");
@@ -76,61 +76,36 @@ void mgcp_codec_summary(struct mgcp_conn_rtp *conn)
 }

 /* Initalize or reset codec information with default data. */
-static void codec_init(struct mgcp_rtp_codec *codec)
-{
-	*codec = (struct mgcp_rtp_codec){
-		.payload_type = -1,
-		.frame_duration_num = DEFAULT_RTP_AUDIO_FRAME_DUR_NUM,
-		.frame_duration_den = DEFAULT_RTP_AUDIO_FRAME_DUR_DEN,
-		.rate = DEFAULT_RTP_AUDIO_DEFAULT_RATE,
-		.channels = DEFAULT_RTP_AUDIO_DEFAULT_CHANNELS,
-	};
-}
-
-static void codec_free(struct mgcp_rtp_codec *codec)
+void codec_init(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){};
+	memset(codec, 0, sizeof(*codec));
+	codec->payload_type = -1;
+	codec->frame_duration_num = DEFAULT_RTP_AUDIO_FRAME_DUR_NUM;
+	codec->frame_duration_den = DEFAULT_RTP_AUDIO_FRAME_DUR_DEN;
+	codec->rate = DEFAULT_RTP_AUDIO_DEFAULT_RATE;
+	codec->channels = DEFAULT_RTP_AUDIO_DEFAULT_CHANNELS;
 }

 /*! Initalize or reset codec information with default data.
 *  \param[out] conn related rtp-connection. */
 void mgcp_codec_reset_all(struct mgcp_conn_rtp *conn)
 {
-	int i;
-	for (i = 0; i < conn->end.codecs_assigned; i++)
-		codec_free(&conn->end.codecs[i]);
+	memset(conn->end.codecs, 0, sizeof(conn->end.codecs));
 	conn->end.codecs_assigned = 0;
 	conn->end.codec = NULL;
 }

-/*! Add codec configuration depending on payload type and/or codec name. This
- *  function uses the input parameters to extrapolate the full codec information.
- *  \param[out] codec configuration (caller provided memory).
- *  \param[out] conn related rtp-connection.
- *  \param[in] payload_type codec type id (e.g. 3 for GSM, -1 when undefined).
- *  \param[in] audio_name audio codec name, in uppercase (e.g. "GSM/8000/1").
- *  \param[in] param optional codec parameters (set to NULL when unused).
- *  \returns 0 on success, -EINVAL on failure. */
-int mgcp_codec_add(struct mgcp_conn_rtp *conn, int payload_type, const char *audio_name, const struct mgcp_codec_param *param)
+/* Set members of struct mgcp_rtp_codec, extrapolate in missing information */
+static int codec_set(void *ctx, struct mgcp_rtp_codec *codec,
+		     int payload_type, const char *audio_name, unsigned int pt_offset)
 {
 	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. */
-	if (conn->end.codecs_assigned >= MGCP_MAX_CODECS)
-		return -EINVAL;
-
-	/* First unused entry */
-	codec = &conn->end.codecs[conn->end.codecs_assigned];

 	/* Initalize the codec struct with some default data to begin with */
 	codec_init(codec);
@@ -138,13 +113,12 @@ int mgcp_codec_add(struct mgcp_conn_rtp *conn, int payload_type, const char *aud
 	if (payload_type != PTYPE_UNDEFINED) {
 		/* Make sure we do not get any reserved or undefined type numbers */
 		/* See also: https://www.iana.org/assignments/rtp-parameters/rtp-parameters.xhtml */
-		if ((payload_type == 1 || payload_type == 2 || payload_type == 19)
-		    || (payload_type >= 72 && payload_type <= 76)
-		    || (payload_type >= 127)) {
-			LOGP(DLMGCP, LOGL_ERROR, "Cannot add codec, payload type number %d is reserved\n",
-			     payload_type);
+		if (payload_type == 1 || payload_type == 2 || payload_type == 19)
+			goto error;
+		if (payload_type >= 72 && payload_type <= 76)
+			goto error;
+		if (payload_type >= 127)
 			goto error;
-		}

 		codec->payload_type = payload_type;
 	}
@@ -170,8 +144,6 @@ int mgcp_codec_add(struct mgcp_conn_rtp *conn, int payload_type, const char *aud
 			/* The given payload type is not known to us, or it
 			 * it is a dynamic payload type for which we do not
 			 * know the audio name. We must give up here */
-			LOGP(DLMGCP, LOGL_ERROR, "No audio codec name given, and payload type %d unknown\n",
-			     payload_type);
 			goto error;
 		}
 	}
@@ -179,23 +151,16 @@ int mgcp_codec_add(struct mgcp_conn_rtp *conn, int payload_type, const char *aud
 	/* 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(audio_name) >= sizeof(audio_codec)) {
-		LOGP(DLMGCP, LOGL_ERROR, "Audio codec too long: %s\n", osmo_quote_str(audio_name, -1));
+	if (strlen(audio_name) > sizeof(audio_codec))
 		goto error;
-	}
 	channels = DEFAULT_RTP_AUDIO_DEFAULT_CHANNELS;
 	rate = DEFAULT_RTP_AUDIO_DEFAULT_RATE;
-	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));
+	if (sscanf(audio_name, "%63[^/]/%d/%d", audio_codec, &rate, &channels) < 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(audio_name, -1));
+	if (channels != 1)
 		goto error;
-	}

 	codec->rate = rate;
 	codec->channels = channels;
@@ -213,7 +178,6 @@ int mgcp_codec_add(struct mgcp_conn_rtp *conn, int payload_type, const char *aud

 	/* Derive the payload type if it is unknown */
 	if (codec->payload_type == PTYPE_UNDEFINED) {
-		/* TODO: This is semi dead code, see OS#4150 */

 		/* For the known codecs from the static range we restore
 		 * the IANA or 3GPP assigned payload type number */
@@ -249,32 +213,46 @@ int mgcp_codec_add(struct mgcp_conn_rtp *conn, int payload_type, const char *aud
 		 * 110 onwards 3gpp defines prefered codec types, which are
 		 * also fixed, see above)  */
 		if (codec->payload_type < 0) {
-			/* FIXME: pt_offset is completely unrelated and useless here, any of those numbers may already
-			 * have been added to the codecs. Instead, there should be an iterator checking for an actually
-			 * unused dynamic payload type number. */
 			codec->payload_type = 96 + pt_offset;
-			if (codec->payload_type > 109) {
-				LOGP(DLMGCP, LOGL_ERROR, "Ran out of payload type numbers to assign dynamically\n");
+			if (codec->payload_type > 109)
 				goto error;
-			}
 		}
 	}

-	/* Copy over optional codec parameters */
-	if (param) {
-		codec->param = *param;
-		codec->param_present = true;
-	} else
-		codec->param_present = false;
-
-	conn->end.codecs_assigned++;
 	return 0;
 error:
 	/* Make sure we leave a clean codec entry on error. */
-	codec_free(codec);
+	codec_init(codec);
+	memset(codec, 0, sizeof(*codec));
 	return -EINVAL;
 }

+/*! Add codec configuration depending on payload type and/or codec name. This
+ *  function uses the input parameters to extrapolate the full codec information.
+ *  \param[out] codec configuration (caller provided memory).
+ *  \param[out] conn related rtp-connection.
+ *  \param[in] payload_type codec type id (e.g. 3 for GSM, -1 when undefined).
+ *  \param[in] audio_name audio codec name (e.g. "GSM/8000/1").
+ *  \returns 0 on success, -EINVAL on failure. */
+int mgcp_codec_add(struct mgcp_conn_rtp *conn, int payload_type, const char *audio_name)
+{
+	int rc;
+
+	/* The amount of codecs we can store is limited, make sure we do not
+	 * overrun this limit. */
+	if (conn->end.codecs_assigned >= MGCP_MAX_CODECS)
+		return -EINVAL;
+
+	rc = codec_set(conn->conn, &conn->end.codecs[conn->end.codecs_assigned], payload_type, audio_name,
+		       conn->end.codecs_assigned);
+	if (rc != 0)
+		return -EINVAL;
+
+	conn->end.codecs_assigned++;
+
+	return 0;
+}
+
 /* Check if the given codec is applicable on the specified endpoint
 * Helper function for mgcp_codec_decide() */
 static bool is_codec_compatible(const struct mgcp_endpoint *endp, const struct mgcp_rtp_codec *codec)
@@ -364,28 +342,9 @@ int mgcp_codec_decide(struct mgcp_conn_rtp *conn)
 	return -EINVAL;
 }

-/* Return true if octet-aligned is set in the given codec. Default to octet-aligned=0, i.e. bandwidth-efficient mode.
- * See RFC4867 "RTP Payload Format for AMR and AMR-WB" sections "8.1. AMR Media Type Registration" and "8.2. AMR-WB
- * Media Type Registration":
- *
- *    octet-align: Permissible values are 0 and 1.  If 1, octet-aligned
- *                 operation SHALL be used.  If 0 or if not present,
- *                 bandwidth-efficient operation is employed.
- *
- * https://tools.ietf.org/html/rfc4867
- */
-static bool amr_is_octet_aligned(const struct mgcp_rtp_codec *codec)
-{
-	if (!codec->param_present)
-		return false;
-	if (!codec->param.amr_octet_aligned_present)
-		return false;
-	return codec->param.amr_octet_aligned;
-}
-
 /* Compare two codecs, all parameters must match up, except for the payload type
 * number. */
-static bool codecs_same(struct mgcp_rtp_codec *codec_a, struct mgcp_rtp_codec *codec_b)
+static bool codecs_cmp(struct mgcp_rtp_codec *codec_a, struct mgcp_rtp_codec *codec_b)
 {
 	if (codec_a->rate != codec_b->rate)
 		return false;
@@ -395,12 +354,10 @@ static bool codecs_same(struct mgcp_rtp_codec *codec_a, struct mgcp_rtp_codec *c
 		return false;
 	if (codec_a->frame_duration_den != codec_b->frame_duration_den)
 		return false;
+	if (strcmp(codec_a->audio_name, codec_b->audio_name))
+		return false;
 	if (strcmp(codec_a->subtype_name, codec_b->subtype_name))
 		return false;
-	if (!strcmp(codec_a->subtype_name, "AMR")) {
-		if (amr_is_octet_aligned(codec_a) != amr_is_octet_aligned(codec_b))
-			return false;
-	}

 	return true;
 }
@@ -441,7 +398,7 @@ int mgcp_codec_pt_translate(struct mgcp_conn_rtp *conn_src, struct mgcp_conn_rtp
 	codecs_assigned = rtp_dst->codecs_assigned;
 	OSMO_ASSERT(codecs_assigned <= MGCP_MAX_CODECS);
 	for (i = 0; i < codecs_assigned; i++) {
-		if (codecs_same(codec_src, &rtp_dst->codecs[i])) {
+		if (codecs_cmp(codec_src, &rtp_dst->codecs[i])) {
 			codec_dst = &rtp_dst->codecs[i];
 			break;
 		}
--- a/src/libosmo-mgcp/mgcp_conn.c
+++ b/src/libosmo-mgcp/mgcp_conn.c
@@ -75,13 +75,14 @@ static int mgcp_alloc_id(struct mgcp_endpoint *endp, char *id)
 		}
 	}

-	LOGPENDP(endp, DLMGCP, LOGL_ERROR, "unable to generate a unique connectionIdentifier\n");
+	LOGP(DLMGCP, LOGL_ERROR, "endpoint:0x%x, unable to generate a unique connectionIdentifier\n",
+	     ENDPOINT_NUMBER(endp));

 	return -1;
 }

 /* Initialize rtp connection struct with default values */
-static int mgcp_rtp_conn_init(struct mgcp_conn_rtp *conn_rtp, struct mgcp_conn *conn)
+static void mgcp_rtp_conn_init(struct mgcp_conn_rtp *conn_rtp, struct mgcp_conn *conn)
 {
 	struct mgcp_rtp_end *end = &conn_rtp->end;
 	/* FIXME: Each new rate counter group requires an unique index. At the
@@ -90,8 +91,7 @@ static int mgcp_rtp_conn_init(struct mgcp_conn_rtp *conn_rtp, struct mgcp_conn *
 	static unsigned int rate_ctr_index = 0;

 	conn_rtp->type = MGCP_RTP_DEFAULT;
-	conn_rtp->osmux.cid_allocated = false;
-	conn_rtp->osmux.cid = 0;
+	conn_rtp->osmux.allocated_cid = -1;

 	/* backpointer to the generic part of the connection */
 	conn->u.rtp.conn = conn;
@@ -109,43 +109,37 @@ static int mgcp_rtp_conn_init(struct mgcp_conn_rtp *conn_rtp, struct mgcp_conn *
 	end->maximum_packet_time = -1;

 	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 = &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);
-
-	return 0;
 }

 /* Cleanup rtp connection struct */
 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);
+	osmux_disable_conn(conn_rtp);
+	osmux_release_cid(conn_rtp);
 	mgcp_free_rtp_port(&conn_rtp->end);
 	rate_ctr_group_free(conn_rtp->rate_ctr_group);
-	mgcp_codec_reset_all(conn_rtp);
 }

 void mgcp_conn_watchdog_cb(void *data)
 {
 	struct mgcp_conn *conn = data;
-	LOGPCONN(conn, DLMGCP, LOGL_ERROR, "connection timed out!\n");
+	LOGP(DLMGCP, LOGL_ERROR, "endpoint:0x%x CI:%s connection timed out!\n", ENDPOINT_NUMBER(conn->endp), conn->id);
 	mgcp_conn_free(conn->endp, conn->id);
 }

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

-	LOGPCONN(conn, DLMGCP, LOGL_DEBUG, "watchdog kicked\n");
+	LOGP(DLMGCP, LOGL_DEBUG, "endpoint:0x%x CI:%s watchdog kicked\n", ENDPOINT_NUMBER(conn->endp), conn->id);
 	osmo_timer_schedule(&conn->watchdog, timeout, 0);
 }

@@ -182,10 +176,7 @@ struct mgcp_conn *mgcp_conn_alloc(void *ctx, struct mgcp_endpoint *endp,

 	switch (type) {
 	case MGCP_CONN_TYPE_RTP:
-		if (mgcp_rtp_conn_init(&conn->u.rtp, conn) < 0) {
-			talloc_free(conn);
-			return NULL;
-		}
+		mgcp_rtp_conn_init(&conn->u.rtp, conn);
 		break;
 	default:
 		/* NOTE: This should never be called with an
--- a/src/libosmo-mgcp/mgcp_endp.c
+++ b/src/libosmo-mgcp/mgcp_endp.c
@@ -36,7 +36,8 @@ const struct mgcp_endpoint_typeset ep_typeset = {
 *  \param[in] endp endpoint to release */
 void mgcp_endp_release(struct mgcp_endpoint *endp)
 {
-	LOGPENDP(endp, DLMGCP, LOGL_DEBUG, "Releasing endpoint\n");
+	LOGP(DLMGCP, LOGL_DEBUG, "Releasing endpoint:0x%x\n",
+	     ENDPOINT_NUMBER(endp));

 	/* Normally this function should only be called when
 	 * all connections have been removed already. In case
--- a/src/libosmo-mgcp/mgcp_msg.c
+++ b/src/libosmo-mgcp/mgcp_msg.c
@@ -82,8 +82,9 @@ int mgcp_parse_conn_mode(const char *mode, struct mgcp_endpoint *endp,
 	int ret = 0;

 	if (!mode) {
-		LOGPCONN(conn, DLMGCP, LOGL_ERROR,
-			 "missing connection mode\n");
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "endpoint:0x%x missing connection mode\n",
+		     ENDPOINT_NUMBER(endp));
 		return -1;
 	}
 	if (!conn)
@@ -91,17 +92,18 @@ int mgcp_parse_conn_mode(const char *mode, struct mgcp_endpoint *endp,
 	if (!endp)
 		return -1;

-	if (strcasecmp(mode, "recvonly") == 0)
+	if (strcmp(mode, "recvonly") == 0)
 		conn->mode = MGCP_CONN_RECV_ONLY;
-	else if (strcasecmp(mode, "sendrecv") == 0)
+	else if (strcmp(mode, "sendrecv") == 0)
 		conn->mode = MGCP_CONN_RECV_SEND;
-	else if (strcasecmp(mode, "sendonly") == 0)
+	else if (strcmp(mode, "sendonly") == 0)
 		conn->mode = MGCP_CONN_SEND_ONLY;
-	else if (strcasecmp(mode, "loopback") == 0)
+	else if (strcmp(mode, "loopback") == 0)
 		conn->mode = MGCP_CONN_LOOPBACK;
 	else {
-		LOGPCONN(conn, DLMGCP, LOGL_ERROR,
-			 "unknown connection mode: '%s'\n", mode);
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "endpoint:0x%x unknown connection mode: '%s'\n",
+		     ENDPOINT_NUMBER(endp), mode);
 		ret = -1;
 	}

@@ -111,15 +113,18 @@ int mgcp_parse_conn_mode(const char *mode, struct mgcp_endpoint *endp,
 		    conn->mode & MGCP_CONN_SEND_ONLY ? 1 : 0;
 	}

-	LOGPENDP(endp, DLMGCP, LOGL_DEBUG, "conn:%s\n", mgcp_conn_dump(conn));
+	LOGP(DLMGCP, LOGL_DEBUG,
+	     "endpoint:0x%x conn:%s\n",
+	     ENDPOINT_NUMBER(endp), mgcp_conn_dump(conn));

-	LOGPCONN(conn, DLMGCP, LOGL_DEBUG, "connection mode '%s' %d\n",
-		 mode, conn->mode);
+	LOGP(DLMGCP, LOGL_DEBUG,
+	     "endpoint:0x%x connection mode '%s' %d\n",
+	     ENDPOINT_NUMBER(endp), mode, conn->mode);

 	/* Special handling für RTP connections */
 	if (conn->type == MGCP_CONN_TYPE_RTP) {
-		LOGPCONN(conn, DLMGCP, LOGL_DEBUG, "output_enabled %d\n",
-			 conn->u.rtp.end.output_enabled);
+		LOGP(DLMGCP, LOGL_DEBUG, "endpoint:0x%x output_enabled %d\n",
+		     ENDPOINT_NUMBER(endp), conn->u.rtp.end.output_enabled);
 	}

 	/* The VTY might change the connection mode at any time, so we have
@@ -192,8 +197,9 @@ static struct mgcp_endpoint *find_free_endpoint(struct mgcp_endpoint *endpoints,
 	for (i = 0; i < number_endpoints; i++) {
 		if (endpoints[i].callid == NULL) {
 			endp = &endpoints[i];
-			LOGPENDP(endp, DLMGCP, LOGL_DEBUG,
-			     "found free endpoint\n");
+			LOGP(DLMGCP, LOGL_DEBUG,
+			     "endpoint:0x%x found free endpoint\n",
+			     ENDPOINT_NUMBER(endp));
 			endp->wildcarded_req = true;
 			return endp;
 		}
@@ -325,7 +331,7 @@ int mgcp_parse_header(struct mgcp_parse_data *pdata, char *data)
 			}
 			break;
 		case 2:
-			if (strcasecmp("MGCP", elem)) {
+			if (strcmp("MGCP", elem)) {
 				LOGP(DLMGCP, LOGL_ERROR,
 				     "MGCP header parsing error\n");
 				return -510;
@@ -354,27 +360,18 @@ int mgcp_parse_header(struct mgcp_parse_data *pdata, char *data)

 /*! Extract OSMUX CID from an MGCP parameter line (string).
 *  \param[in] line single parameter line from the MGCP message
- *  \returns OSMUX CID, -1 wildcard, -2 on error */
+ *  \returns OSMUX CID, -1 on error */
 int mgcp_parse_osmux_cid(const char *line)
 {
 	int osmux_cid;

-
-	if (strcasecmp(line + 2, "Osmux: *") == 0) {
-		LOGP(DLMGCP, LOGL_DEBUG, "Parsed wilcard Osmux CID\n");
+	if (sscanf(line + 2, "Osmux: %u", &osmux_cid) != 1)
 		return -1;
-	}
-
-	if (sscanf(line + 2 + 7, "%u", &osmux_cid) != 1) {
-		LOGP(DLMGCP, LOGL_ERROR, "Failed parsing Osmux in MGCP msg line: %s\n",
-		     line);
-		return -2;
-	}

 	if (osmux_cid > OSMUX_CID_MAX) {
 		LOGP(DLMGCP, LOGL_ERROR, "Osmux ID too large: %u > %u\n",
 		     osmux_cid, OSMUX_CID_MAX);
-		return -2;
+		return -1;
 	}
 	LOGP(DLMGCP, LOGL_DEBUG, "bsc-nat offered Osmux CID %u\n", osmux_cid);

@@ -422,9 +419,9 @@ int mgcp_verify_call_id(struct mgcp_endpoint *endp, const char *callid)
 		return -1;

 	if (strcmp(endp->callid, callid) != 0) {
-		LOGPENDP(endp, DLMGCP, LOGL_ERROR,
-			 "CallIDs mismatch: '%s' != '%s'\n",
-			 endp->callid, callid);
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "endpoint:0x%x CallIDs mismatch: '%s' != '%s'\n",
+		     ENDPOINT_NUMBER(endp), endp->callid, callid);
 		return -1;
 	}

@@ -443,23 +440,25 @@ int mgcp_verify_ci(struct mgcp_endpoint *endp, const char *conn_id)

 	/* Check for null identifiers */
 	if (!conn_id) {
-		LOGPENDP(endp, DLMGCP, LOGL_ERROR,
-			 "invalid ConnectionIdentifier (missing)\n");
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "endpoint:0x%x invalid ConnectionIdentifier (missing)\n",
+		     ENDPOINT_NUMBER(endp));
 		return 510;
 	}

 	/* Check for empty connection identifiers */
 	if (strlen(conn_id) == 0) {
-		LOGPENDP(endp, DLMGCP, LOGL_ERROR,
-			 "invalid ConnectionIdentifier (empty)\n");
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "endpoint:0x%x invalid ConnectionIdentifier (empty)\n",
+		     ENDPOINT_NUMBER(endp));
 		return 510;
 	}

 	/* Check for over long connection identifiers */
 	if (strlen(conn_id) > (MGCP_CONN_ID_MAXLEN-1)) {
-		LOGPENDP(endp, DLMGCP, LOGL_ERROR,
-			"invalid ConnectionIdentifier (too long: %zu > %d) 0x%s\n",
-			 strlen(conn_id), MGCP_CONN_ID_MAXLEN-1, conn_id);
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "endpoint:0x%x invalid ConnectionIdentifier (too long: %zu > %d) 0x%s\n",
+		     ENDPOINT_NUMBER(endp), strlen(conn_id), MGCP_CONN_ID_MAXLEN-1, conn_id);
 		return 510;
 	}

@@ -467,8 +466,9 @@ int mgcp_verify_ci(struct mgcp_endpoint *endp, const char *conn_id)
 	if (mgcp_conn_get(endp, conn_id))
 		return 0;

-	LOGPENDP(endp, DLMGCP, LOGL_ERROR,
-	     "no connection found under ConnectionIdentifier 0x%s\n", conn_id);
+	LOGP(DLMGCP, LOGL_ERROR,
+	     "endpoint:0x%x no connection found under ConnectionIdentifier 0x%s\n",
+	     ENDPOINT_NUMBER(endp), conn_id);

 	/* When the conn_id was not found, return error code 515 "The transaction refers to an incorrect
 	 * connection-id (may have been already deleted)." */
--- 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
@@ -15,12 +15,10 @@
 #include <inttypes.h> /* for PRIu64 */
 #include <netinet/in.h>
 #include <osmocom/core/msgb.h>
-#include <osmocom/core/socket.h>
 #include <osmocom/core/talloc.h>

 #include <osmocom/netif/osmux.h>
 #include <osmocom/netif/rtp.h>
-#include <osmocom/netif/amr.h>

 #include <osmocom/mgcp/mgcp.h>
 #include <osmocom/mgcp/mgcp_internal.h>
@@ -36,7 +34,7 @@ struct osmux_handle {
 	struct llist_head head;
 	struct osmux_in_handle *in;
 	struct in_addr rem_addr;
-	int rem_port; /* network byte order */
+	int rem_port;
 	int refcnt;
 };

@@ -179,12 +177,6 @@ int osmux_xfrm_to_osmux(char *buf, int buf_len, struct mgcp_conn_rtp *conn)
 	memcpy(msg->data, buf, buf_len);
 	msgb_put(msg, buf_len);

-	if (conn->osmux.state != OSMUX_STATE_ENABLED) {
-		LOGPCONN(conn->conn, DLMGCP, LOGL_INFO, "forwarding RTP to Osmux conn not yet enabled, dropping (cid=%d)\n",
-		conn->osmux.cid);
-		return -1;
-	}
-
 	while ((ret = osmux_xfrm_input(conn->osmux.in, msg, conn->osmux.cid)) > 0) {
 		/* batch full, build and deliver it */
 		osmux_xfrm_input_deliver(conn->osmux.in);
@@ -193,54 +185,111 @@ int osmux_xfrm_to_osmux(char *buf, int buf_len, struct mgcp_conn_rtp *conn)
 }

 /* Lookup the endpoint that corresponds to the specified address (port) */
-static struct mgcp_conn_rtp*
-osmux_conn_lookup(struct mgcp_config *cfg, uint8_t cid,
-		struct in_addr *from_addr)
+static struct mgcp_endpoint *
+endpoint_lookup(struct mgcp_config *cfg, int cid,
+		struct in_addr *from_addr, int type)
 {
-	struct mgcp_endpoint *endp;
-	struct mgcp_conn *conn = NULL;
-	struct mgcp_conn_rtp * conn_rtp;
+	struct mgcp_endpoint *endp = NULL;
 	int i;
+	struct mgcp_conn_rtp *conn_net = NULL;
+	struct mgcp_conn_rtp *conn_bts = NULL;

 	for (i=0; i<cfg->trunk.number_endpoints; i++) {
+		struct in_addr *this;

 		endp = &cfg->trunk.endpoints[i];

-		llist_for_each_entry(conn, &endp->conns, entry) {
-			if (conn->type != MGCP_CONN_TYPE_RTP)
-				continue;
+#if 0
+		if (!tmp->allocated)
+			continue;
+#endif

-			conn_rtp = &conn->u.rtp;
-			if (!mgcp_conn_rtp_is_osmux(conn_rtp))
-				continue;
-
-			if (conn_rtp->osmux.cid == cid)
-				return conn_rtp;
+		switch(type) {
+		case MGCP_DEST_NET:
+			/* FIXME: Get rid of CONN_ID_XXX! */
+			conn_net = mgcp_conn_get_rtp(endp, CONN_ID_NET);
+			if (conn_net)
+				this = &conn_net->end.addr;
+			else
+				this = NULL;
+			break;
+		case MGCP_DEST_BTS:
+			/* FIXME: Get rid of CONN_ID_XXX! */
+			conn_bts = mgcp_conn_get_rtp(endp, CONN_ID_BTS);
+			if (conn_bts)
+				this = &conn_bts->end.addr;
+			else
+				this = NULL;
+			break;
+		default:
+			/* Should not ever happen */
+			LOGP(DLMGCP, LOGL_ERROR, "Bad type %d. Fix your code.\n", type);
+			return NULL;
 		}
+
+		/* FIXME: Get rid of CONN_ID_XXX! */
+		conn_net = mgcp_conn_get_rtp(endp, CONN_ID_NET);
+		if (conn_net && this && conn_net->osmux.cid == cid
+		    && this->s_addr == from_addr->s_addr)
+			return endp;
 	}

-	LOGP(DLMGCP, LOGL_ERROR, "Cannot find osmux conn with cid=%d\n", cid);
+	LOGP(DLMGCP, LOGL_ERROR, "Cannot find endpoint with cid=%d\n", cid);

 	return NULL;
 }

-/* FIXME: this is declared and used in mgcp_network.c, but documentation of mgcp_dispatch_rtp_bridge_cb() states another enum is to be used */
-enum {
-	MGCP_PROTO_RTP,
-	MGCP_PROTO_RTCP,
-};
-
-static void scheduled_from_osmux_tx_rtp_cb(struct msgb *msg, void *data)
+static void scheduled_tx_net_cb(struct msgb *msg, void *data)
 {
-	struct mgcp_conn_rtp *conn = data;
-	struct mgcp_endpoint *endp = conn->conn->endp;
+	struct mgcp_endpoint *endp = data;
+	struct mgcp_conn_rtp *conn_net = NULL;
+	struct mgcp_conn_rtp *conn_bts = NULL;
+
+	/* FIXME: Get rid of CONN_ID_XXX! */
+	conn_bts = mgcp_conn_get_rtp(endp, CONN_ID_BTS);
+	conn_net = mgcp_conn_get_rtp(endp, CONN_ID_NET);
+	if (!conn_bts || !conn_net)
+		return;
+
 	struct sockaddr_in addr = {
-		.sin_addr = conn->end.addr,
-		.sin_port = conn->end.rtp_port,
-	}; /* FIXME: not set/used in cb */
+		.sin_addr = conn_net->end.addr,
+		.sin_port = conn_net->end.rtp_port,
+	};

+	rate_ctr_inc(&conn_bts->rate_ctr_group->ctr[RTP_PACKETS_TX_CTR]);
+	rate_ctr_add(&conn_bts->rate_ctr_group->ctr[RTP_OCTETS_TX_CTR], msg->len);

-	endp->type->dispatch_rtp_cb(MGCP_PROTO_RTP, &addr, (char *)msg->data, msg->len, conn->conn);
+	/* Send RTP data to NET */
+	/* FIXME: Get rid of conn_bts and conn_net! */
+	mgcp_send(endp, 1, &addr, (char *)msg->data, msg->len,
+		  conn_bts, conn_net);
+	msgb_free(msg);
+}
+
+static void scheduled_tx_bts_cb(struct msgb *msg, void *data)
+{
+	struct mgcp_endpoint *endp = data;
+	struct mgcp_conn_rtp *conn_net = NULL;
+	struct mgcp_conn_rtp *conn_bts = NULL;
+
+	/* FIXME: Get rid of CONN_ID_XXX! */
+	conn_bts = mgcp_conn_get_rtp(endp, CONN_ID_BTS);
+	conn_net = mgcp_conn_get_rtp(endp, CONN_ID_NET);
+	if (!conn_bts || !conn_net)
+		return;
+
+	struct sockaddr_in addr = {
+		.sin_addr = conn_bts->end.addr,
+		.sin_port = conn_bts->end.rtp_port,
+	};
+
+	rate_ctr_inc(&conn_net->rate_ctr_group->ctr[RTP_PACKETS_TX_CTR]);
+	rate_ctr_add(&conn_net->rate_ctr_group->ctr[RTP_OCTETS_TX_CTR], msg->len);
+
+	/* Send RTP data to BTS */
+	/* FIXME: Get rid of conn_bts and conn_net! */
+	mgcp_send(endp, 1, &addr, (char *)msg->data, msg->len,
+		  conn_net, conn_bts);
 	msgb_free(msg);
 }

@@ -273,26 +322,24 @@ static int endp_osmux_state_check(struct mgcp_endpoint *endp, struct mgcp_conn_r
 {
 	switch(conn->osmux.state) {
 	case OSMUX_STATE_ACTIVATING:
-	if (osmux_enable_conn(endp, conn, &conn->end.addr, conn->end.rtp_port) < 0) {
-			LOGPCONN(conn->conn, DLMGCP, LOGL_ERROR,
-				 "Could not enable osmux for conn on %s: %s\n",
-				 sending ? "sent" : "received",
-				 mgcp_conn_dump(conn->conn));
+	if (osmux_enable_conn(endp, conn, &conn->end.addr, htons(endp->cfg->osmux_port)) < 0) {
+			LOGP(DLMGCP, LOGL_ERROR,
+				"Could not enable osmux for conn:%s\n",
+				mgcp_conn_dump(conn->conn));
 			return -1;
 		}
-		LOGPCONN(conn->conn, DLMGCP, LOGL_ERROR,
-			 "Osmux %s CID %u towards %s:%u is now enabled\n",
-			 sending ? "sent" : "received",
-			 conn->osmux.cid, inet_ntoa(conn->end.addr),
-			 ntohs(conn->end.rtp_port));
+		LOGP(DLMGCP, LOGL_ERROR,
+		    "Osmux CID %u for %s:%u is now enabled\n",
+		    conn->osmux.cid, inet_ntoa(conn->end.addr),
+		    endp->cfg->osmux_port);
 		return 0;
 	case OSMUX_STATE_ENABLED:
 		return 0;
 	default:
-		LOGPCONN(conn->conn, DLMGCP, LOGL_ERROR,
-			 "Osmux %s in conn %s without full negotiation, state %d\n",
-			 sending ? "sent" : "received",
-			 mgcp_conn_dump(conn->conn), conn->osmux.state);
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "Osmux %s in conn %s without full negotiation, state %d\n",
+		     sending ? "sent" : "received",
+		     mgcp_conn_dump(conn->conn), conn->osmux.state);
 		return -1;
 	}
 }
@@ -300,9 +347,9 @@ static int endp_osmux_state_check(struct mgcp_endpoint *endp, struct mgcp_conn_r
 static int osmux_legacy_dummy_parse_cid(struct sockaddr_in *addr, struct msgb *msg,
 					uint8_t *osmux_cid)
 {
-	if (msg->len < 1 + sizeof(*osmux_cid)) {
+	if (msg->len < 1 + sizeof(osmux_cid)) {
 		LOGP(DLMGCP, LOGL_ERROR,
-		     "Discarding truncated Osmux dummy load: %s\n", osmo_hexdump(msg->data, msg->len));
+		     "Discarding truncated Osmux dummy load\n");
 		return -1;
 	}

@@ -311,40 +358,16 @@ static int osmux_legacy_dummy_parse_cid(struct sockaddr_in *addr, struct msgb *m
 	return 0;
 }

-/* This is called from the bsc-nat */
-static int osmux_handle_dummy(struct mgcp_config *cfg, struct sockaddr_in *addr,
-			      struct msgb *msg)
-{
-	uint8_t osmux_cid;
-	struct mgcp_conn_rtp *conn;
-
-	if (osmux_legacy_dummy_parse_cid(addr, msg, &osmux_cid) < 0)
-		goto out;
-
-	conn = osmux_conn_lookup(cfg, osmux_cid, &addr->sin_addr);
-	if (!conn) {
-		LOGP(DLMGCP, LOGL_ERROR,
-		     "Cannot find conn for Osmux CID %d\n", osmux_cid);
-		goto out;
-	}
-
-	endp_osmux_state_check(conn->conn->endp, conn, false);
-	/* Only needed to punch hole in firewall, it can be dropped */
-out:
-	msgb_free(msg);
-	return 0;
-}
-
 #define osmux_chunk_length(msg, rem) (rem - msg->len);

-static int osmux_read_fd_cb(struct osmo_fd *ofd, unsigned int what)
+int osmux_read_from_bsc_nat_cb(struct osmo_fd *ofd, unsigned int what)
 {
 	struct msgb *msg;
 	struct osmux_hdr *osmuxh;
 	struct sockaddr_in addr;
 	struct mgcp_config *cfg = ofd->data;
 	uint32_t rem;
-	struct mgcp_conn_rtp *conn_src;
+	struct mgcp_conn_rtp *conn_bts = NULL;

 	msg = osmux_recv(ofd, &addr);
 	if (!msg)
@@ -358,32 +381,115 @@ static int osmux_read_fd_cb(struct osmo_fd *ofd, unsigned int what)

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

 	rem = msg->len;
 	while((osmuxh = osmux_xfrm_output_pull(msg)) != NULL) {
+		struct mgcp_endpoint *endp;

-		conn_src = osmux_conn_lookup(cfg, osmuxh->circuit_id,
-					     &addr.sin_addr);
-		if (!conn_src) {
+		/* Yes, we use MGCP_DEST_NET to locate the origin */
+		endp = endpoint_lookup(cfg, osmuxh->circuit_id,
+				       &addr.sin_addr, MGCP_DEST_NET);
+
+		/* FIXME: Get rid of CONN_ID_XXX! */
+		conn_bts = mgcp_conn_get_rtp(endp, CONN_ID_BTS);
+		if (!conn_bts)
+			continue;
+
+		if (!endp) {
 			LOGP(DLMGCP, LOGL_ERROR,
-			     "Cannot find a src conn for circuit_id=%d\n",
+			     "Cannot find an endpoint for circuit_id=%d\n",
 			     osmuxh->circuit_id);
 			goto out;
 		}
+		if (endp_osmux_state_check(endp, conn_bts, false) == 0) {
+			conn_bts->osmux.stats.octets += osmux_chunk_length(msg, rem);
+			conn_bts->osmux.stats.chunks++;
+			osmux_xfrm_output_sched(&conn_bts->osmux.out, osmuxh);
+		}
+		rem = msg->len;
+	}
+out:
+	msgb_free(msg);
+	return 0;
+}

-		/*conn_dst = mgcp_find_dst_conn(conn_src->conn);
-		if (!conn_dst) {
+/* This is called from the bsc-nat */
+static int osmux_handle_dummy(struct mgcp_config *cfg, struct sockaddr_in *addr,
+			      struct msgb *msg, int endp_type)
+{
+	struct mgcp_endpoint *endp;
+	uint8_t osmux_cid;
+	struct mgcp_conn_rtp *conn = NULL;
+
+	if (osmux_legacy_dummy_parse_cid(addr, msg, &osmux_cid) < 0)
+		goto out;
+
+	endp = endpoint_lookup(cfg, osmux_cid, &addr->sin_addr, endp_type);
+	if (!endp) {
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "Cannot find endpoint for Osmux CID %d\n", osmux_cid);
+		goto out;
+	}
+
+	/* FIXME: Get rid of CONN_ID_XXX! */
+	conn = mgcp_conn_get_rtp(endp, endp_type == MGCP_DEST_BTS ? CONN_ID_NET : CONN_ID_BTS);
+	if (!conn)
+		goto out;
+
+	endp_osmux_state_check(endp, conn, false);
+	/* Only needed to punch hole in firewall, it can be dropped */
+out:
+	msgb_free(msg);
+	return 0;
+}
+
+int osmux_read_from_bsc_cb(struct osmo_fd *ofd, unsigned int what)
+{
+	struct msgb *msg;
+	struct osmux_hdr *osmuxh;
+	struct sockaddr_in addr;
+	struct mgcp_config *cfg = ofd->data;
+	uint32_t rem;
+	struct mgcp_conn_rtp *conn_net = NULL;
+
+	msg = osmux_recv(ofd, &addr);
+	if (!msg)
+		return -1;
+
+	if (!cfg->osmux) {
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "bsc wants to use Osmux but bsc-nat did not request it\n");
+		goto out;
+	}
+
+	/* not any further processing dummy messages */
+	if (msg->data[0] == MGCP_DUMMY_LOAD)
+		return osmux_handle_dummy(cfg, &addr, msg, MGCP_DEST_BTS);
+
+	rem = msg->len;
+	while((osmuxh = osmux_xfrm_output_pull(msg)) != NULL) {
+		struct mgcp_endpoint *endp;
+
+		/* Yes, we use MGCP_DEST_BTS to locate the origin */
+		endp = endpoint_lookup(cfg, osmuxh->circuit_id,
+				       &addr.sin_addr, MGCP_DEST_BTS);
+
+		/* FIXME: Get rid of CONN_ID_XXX! */
+		conn_net = mgcp_conn_get_rtp(endp, CONN_ID_NET);
+		if (!conn_net)
+			continue;
+
+		if (!endp) {
 			LOGP(DLMGCP, LOGL_ERROR,
-			     "Cannot find a dst conn for circuit_id=%d\n",
+			     "Cannot find an endpoint for circuit_id=%d\n",
 			     osmuxh->circuit_id);
 			goto out;
-		}*/
-
-		if (endp_osmux_state_check(conn_src->conn->endp, conn_src, false) == 0) {
-			conn_src->osmux.stats.octets += osmux_chunk_length(msg, rem);
-			conn_src->osmux.stats.chunks++;
-			osmux_xfrm_output_sched(&conn_src->osmux.out, osmuxh);
+		}
+		if (endp_osmux_state_check(endp, conn_net, false) == 0) {
+			conn_net->osmux.stats.octets += osmux_chunk_length(msg, rem);
+			conn_net->osmux.stats.chunks++;
+			osmux_xfrm_output_sched(&conn_net->osmux.out, osmuxh);
 		}
 		rem = msg->len;
 	}
@@ -396,13 +502,22 @@ int osmux_init(int role, struct mgcp_config *cfg)
 {
 	int ret;

-	osmux_fd.cb = osmux_read_fd_cb;
+	switch(role) {
+	case OSMUX_ROLE_BSC:
+		osmux_fd.cb = osmux_read_from_bsc_nat_cb;
+		break;
+	case OSMUX_ROLE_BSC_NAT:
+		osmux_fd.cb = osmux_read_from_bsc_cb;
+		break;
+	default:
+		LOGP(DLMGCP, LOGL_ERROR, "wrong role for OSMUX\n");
+		return -1;
+	}
 	osmux_fd.data = cfg;

 	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);
+		LOGP(DLMGCP, LOGL_ERROR, "cannot bind OSMUX socket\n");
 		return ret;
 	}
 	mgcp_set_ip_tos(osmux_fd.fd, cfg->endp_dscp);
@@ -410,15 +525,11 @@ int osmux_init(int role, struct mgcp_config *cfg)

 	ret = osmo_fd_register(&osmux_fd);
 	if (ret < 0) {
-		LOGP(DLMGCP, LOGL_ERROR, "cannot register OSMUX socket %s\n",
-		     osmo_sock_get_name2(osmux_fd.fd));
+		LOGP(DLMGCP, LOGL_ERROR, "cannot register OSMUX socket\n");
 		return ret;
 	}
 	cfg->osmux_init = 1;

-	LOGP(DLMGCP, LOGL_INFO, "OSMUX socket listening on %s\n",
-		 osmo_sock_get_name2(osmux_fd.fd));
-
 	return 0;
 }

@@ -426,7 +537,7 @@ int osmux_init(int role, struct mgcp_config *cfg)
 *  \param[in] endp mgcp endpoint (configuration)
 *  \param[in] conn connection to disable
 *  \param[in] addr IP address of remote OSMUX endpoint
- *  \param[in] port portnumber of the remote OSMUX endpoint (in network byte order)
+ *  \param[in] port portnumber of the remote OSMUX endpoint
 *  \returns 0 on success, -1 on ERROR */
 int osmux_enable_conn(struct mgcp_endpoint *endp, struct mgcp_conn_rtp *conn,
 		      struct in_addr *addr, uint16_t port)
@@ -440,46 +551,44 @@ int osmux_enable_conn(struct mgcp_endpoint *endp, struct mgcp_conn_rtp *conn,
 	 *  overlapping RTP SSRC traveling to the BTSes behind the BSC,
 	 *  similarly, for flows traveling to the MSC.
 	 */
-	struct in_addr addr_unset = {};
 	static const uint32_t rtp_ssrc_winlen = UINT32_MAX / (OSMUX_CID_MAX + 1);
 	uint16_t osmux_dummy = endp->cfg->osmux_dummy;

 	/* Check if osmux is enabled for the specified connection */
 	if (conn->osmux.state != OSMUX_STATE_ACTIVATING) {
-		LOGPCONN(conn->conn, DLMGCP, LOGL_ERROR,
-			 "conn:%s didn't negotiate Osmux, state %d\n",
-			 mgcp_conn_dump(conn->conn), conn->osmux.state);
-		return -1;
-	}
-
-	/* Wait until we have the connection information from MDCX */
-	if (memcmp(&conn->end.addr, &addr_unset, sizeof(addr_unset)) == 0) {
-		LOGPCONN(conn->conn, DLMGCP, LOGL_INFO,
-			"Osmux remote address/port still unknown\n");
+		LOGP(DLMGCP, LOGL_ERROR, "conn:%s didn't negotiate Osmux, state %d\n",
+		     mgcp_conn_dump(conn->conn), conn->osmux.state);
 		return -1;
 	}

 	conn->osmux.in = osmux_handle_lookup(endp->cfg, addr, port);
 	if (!conn->osmux.in) {
-		LOGPCONN(conn->conn, DLMGCP, LOGL_ERROR,
-			"Cannot allocate input osmux handle for conn:%s\n",
-			mgcp_conn_dump(conn->conn));
+		LOGP(DLMGCP, LOGL_ERROR, "Cannot allocate input osmux handle for conn:%s\n",
+		     mgcp_conn_dump(conn->conn));
 		return -1;
 	}
-	if (osmux_xfrm_input_open_circuit(conn->osmux.in, conn->osmux.cid, osmux_dummy) < 0) {
-		LOGPCONN(conn->conn, DLMGCP, LOGL_ERROR,
-			"Cannot open osmux circuit %u for conn:%s\n",
+	if (!osmux_xfrm_input_open_circuit(conn->osmux.in, conn->osmux.cid, osmux_dummy)) {
+		LOGP(DLMGCP, LOGL_ERROR, "Cannot open osmux circuit %u for conn:%s\n",
 		     conn->osmux.cid, mgcp_conn_dump(conn->conn));
 		return -1;
 	}

-	osmux_xfrm_output_init2(&conn->osmux.out,
+	osmux_xfrm_output_init(&conn->osmux.out,
 			       (conn->osmux.cid * rtp_ssrc_winlen) +
-			        (random() % rtp_ssrc_winlen),
-			       conn->end.codec->payload_type);
+			       (random() % rtp_ssrc_winlen));

-	osmux_xfrm_output_set_tx_cb(&conn->osmux.out,
-				    scheduled_from_osmux_tx_rtp_cb, conn);
+	switch (endp->cfg->role) {
+		case MGCP_BSC_NAT:
+			conn->type = MGCP_OSMUX_BSC_NAT;
+			osmux_xfrm_output_set_tx_cb(&conn->osmux.out,
+							scheduled_tx_net_cb, endp);
+			break;
+		case MGCP_BSC:
+			conn->type = MGCP_OSMUX_BSC;
+			osmux_xfrm_output_set_tx_cb(&conn->osmux.out,
+							scheduled_tx_bts_cb, endp);
+			break;
+	}

 	conn->osmux.state = OSMUX_STATE_ENABLED;

@@ -488,65 +597,48 @@ int osmux_enable_conn(struct mgcp_endpoint *endp, struct mgcp_conn_rtp *conn,

 /*! disable OSXMUX circuit for a specified connection.
 *  \param[in] conn connection to disable */
-void conn_osmux_disable(struct mgcp_conn_rtp *conn)
+void osmux_disable_conn(struct mgcp_conn_rtp *conn)
 {
+	if (!conn)
+		return;

-	OSMO_ASSERT(conn->osmux.state != OSMUX_STATE_DISABLED);
+	if (conn->osmux.state != OSMUX_STATE_ENABLED)
+		return;

-	LOGPCONN(conn->conn, DLMGCP, LOGL_INFO,
-		"Releasing connection using Osmux CID %u\n", conn->osmux.cid);
+	LOGP(DLMGCP, LOGL_INFO, "Releasing connection %s using Osmux CID %u\n",
+	     conn->conn->id, conn->osmux.cid);

-	if (conn->osmux.state == OSMUX_STATE_ENABLED) {
-		/* We are closing, we don't need pending RTP packets to be transmitted */
-		osmux_xfrm_output_set_tx_cb(&conn->osmux.out, NULL, NULL);
-		osmux_xfrm_output_flush(&conn->osmux.out);
+	/* We are closing, we don't need pending RTP packets to be transmitted */
+	osmux_xfrm_output_set_tx_cb(&conn->osmux.out, NULL, NULL);
+	osmux_xfrm_output_flush(&conn->osmux.out);

-		osmux_xfrm_input_close_circuit(conn->osmux.in, conn->osmux.cid);
-		conn->osmux.state = OSMUX_STATE_DISABLED;
-		conn_osmux_release_cid(conn);
-		osmux_handle_put(conn->osmux.in);
-	}
-	conn_osmux_release_cid(conn);
+	osmux_xfrm_input_close_circuit(conn->osmux.in, conn->osmux.cid);
+	conn->osmux.state = OSMUX_STATE_DISABLED;
+	conn->osmux.cid = -1;
+	osmux_handle_put(conn->osmux.in);
 }

 /*! relase OSXMUX cid, that had been allocated to this connection.
 *  \param[in] conn connection with OSMUX cid to release */
-void conn_osmux_release_cid(struct mgcp_conn_rtp *conn)
+void osmux_release_cid(struct mgcp_conn_rtp *conn)
 {
-	if (conn->osmux.cid_allocated)
-		osmux_cid_pool_put(conn->osmux.cid);
-	conn->osmux.cid = 0;
-	conn->osmux.cid_allocated = false;
+	if (!conn)
+		return;
+
+	if (conn->osmux.state != OSMUX_STATE_ENABLED)
+		return;
+
+	if (conn->osmux.allocated_cid >= 0)
+		osmux_put_cid(conn->osmux.allocated_cid);
+	conn->osmux.allocated_cid = -1;
 }

 /*! allocate OSXMUX cid to connection.
- *  \param[in] conn connection for which we allocate the OSMUX cid
- * \param[in] osmux_cid OSMUX cid to allocate. -1 Means take next available one.
- * \returns Allocated OSMUX cid, -1 on error (no free  cids avail, or selected one is already taken).
- */
-int conn_osmux_allocate_cid(struct mgcp_conn_rtp *conn, int osmux_cid)
+ *  \param[in] conn connection for which we allocate the OSMUX cid*/
+void osmux_allocate_cid(struct mgcp_conn_rtp *conn)
 {
-	if (osmux_cid != -1 && osmux_cid_pool_allocated((uint8_t) osmux_cid)) {
-		LOGPCONN(conn->conn, DLMGCP, LOGL_INFO,
-			 "Osmux CID %d already allocated!\n",
-			 osmux_cid);
-		return -1;
-	}
-
-	if (osmux_cid == -1) {
-		osmux_cid = osmux_cid_pool_get_next();
-		if (osmux_cid == -1) {
-			LOGPCONN(conn->conn, DLMGCP, LOGL_INFO,
-				 "no available Osmux CID to allocate!\n");
-			return -1;
-		}
-	} else
-		osmux_cid_pool_get(osmux_cid);
-
-	conn->osmux.cid = (uint8_t) osmux_cid;
-	conn->osmux.cid_allocated = true;
-	conn->type = MGCP_OSMUX_BSC;
-	return osmux_cid;
+	osmux_release_cid(conn);
+	conn->osmux.allocated_cid = osmux_get_cid();
 }

 /*! send RTP dummy packet to OSMUX connection port.
@@ -555,8 +647,7 @@ int conn_osmux_allocate_cid(struct mgcp_conn_rtp *conn, int osmux_cid)
 *  \returns bytes sent, -1 on error */
 int osmux_send_dummy(struct mgcp_endpoint *endp, struct mgcp_conn_rtp *conn)
 {
-	struct osmux_hdr *osmuxh;
-	int buf_len;
+	char buf[1 + sizeof(uint8_t)];
 	struct in_addr addr_unset = {};

 	/*! The dummy packet will not be sent via the actual OSMUX connection,
@@ -568,6 +659,9 @@ int osmux_send_dummy(struct mgcp_endpoint *endp, struct mgcp_conn_rtp *conn)
 	 *  endpoint may have already punched the hole in the firewall. This
 	 *  approach is simple though. */

+	buf[0] = MGCP_DUMMY_LOAD;
+	memcpy(&buf[1], &conn->osmux.cid, sizeof(conn->osmux.cid));
+
 	/* Wait until we have the connection information from MDCX */
 	if (memcmp(&conn->end.addr, &addr_unset, sizeof(addr_unset)) == 0)
 		return 0;
@@ -575,19 +669,12 @@ int osmux_send_dummy(struct mgcp_endpoint *endp, struct mgcp_conn_rtp *conn)
 	if (endp_osmux_state_check(endp, conn, true) < 0)
 		return 0;

-	buf_len = sizeof(struct osmux_hdr) + osmo_amr_bytes(AMR_FT_0);
-	osmuxh = (struct osmux_hdr *) alloca(buf_len);
-	memset(osmuxh, 0, buf_len);
-	osmuxh->ft = OSMUX_FT_DUMMY;
-	osmuxh->amr_ft = AMR_FT_0;
-	osmuxh->circuit_id = conn->osmux.cid;
-
-	LOGPCONN(conn->conn, DLMGCP, LOGL_DEBUG,
-		 "sending OSMUX dummy load to %s:%u CID %u\n",
-		 inet_ntoa(conn->end.addr), ntohs(conn->end.rtp_port), conn->osmux.cid);
+	LOGP(DLMGCP, LOGL_DEBUG,
+	     "sending OSMUX dummy load to %s CID %u\n",
+	     inet_ntoa(conn->end.addr), conn->osmux.cid);

 	return mgcp_udp_send(osmux_fd.fd, &conn->end.addr,
-			     conn->end.rtp_port, (char*)osmuxh, buf_len);
+			     htons(endp->cfg->osmux_port), buf, sizeof(buf));
 }

 /* bsc-nat allocates/releases the Osmux circuit ID. +7 to round up to 8 bit boundary. */
@@ -595,7 +682,7 @@ static uint8_t osmux_cid_bitmap[(OSMUX_CID_MAX + 1 + 7) / 8];

 /*! count the number of taken OSMUX cids.
 *  \returns number of OSMUX cids in use */
-int osmux_cid_pool_count_used(void)
+int osmux_used_cid(void)
 {
 	int i, j, used = 0;

@@ -611,7 +698,7 @@ int osmux_cid_pool_count_used(void)

 /*! take a free OSMUX cid.
 *  \returns OSMUX cid */
-int osmux_cid_pool_get_next(void)
+int osmux_get_cid(void)
 {
 	int i, j;

@@ -631,24 +718,10 @@ int osmux_cid_pool_get_next(void)
 	return -1;
 }

-/*! take a specific OSMUX cid.
- *  \param[in] osmux_cid OSMUX cid */
-void osmux_cid_pool_get(uint8_t osmux_cid)
-{
-	LOGP(DLMGCP, LOGL_DEBUG, "Allocating Osmux CID %u from pool\n", osmux_cid);
-	osmux_cid_bitmap[osmux_cid / 8] |= (1 << (osmux_cid % 8));
-}
-
 /*! put back a no longer used OSMUX cid.
 *  \param[in] osmux_cid OSMUX cid */
-void osmux_cid_pool_put(uint8_t osmux_cid)
+void osmux_put_cid(uint8_t osmux_cid)
 {
 	LOGP(DLMGCP, LOGL_DEBUG, "Osmux CID %u is back to the pool\n", osmux_cid);
 	osmux_cid_bitmap[osmux_cid / 8] &= ~(1 << (osmux_cid % 8));
 }
-
-/*! check if OSMUX cid is already taken */
-bool osmux_cid_pool_allocated(uint8_t osmux_cid)
-{
-	return !!(osmux_cid_bitmap[osmux_cid / 8] & (1 << (osmux_cid % 8)));
-}
--- a/src/libosmo-mgcp/mgcp_protocol.c
+++ b/src/libosmo-mgcp/mgcp_protocol.c
@@ -147,15 +147,17 @@ static int setup_rtp_processing(struct mgcp_endpoint *endp,
 	struct mgcp_conn_rtp *conn_dst = conn;
 	struct mgcp_conn *_conn;

-	if (conn->type != MGCP_RTP_DEFAULT && !mgcp_conn_rtp_is_osmux(conn)) {
-		LOGPENDP(endp, DLMGCP, LOGL_NOTICE,
-			 "RTP-setup: Endpoint is not configured as RTP default, stopping here!\n");
+	if (conn->type != MGCP_RTP_DEFAULT) {
+		LOGP(DLMGCP, LOGL_NOTICE,
+		     "endpoint:%x RTP-setup: Endpoint is not configured as RTP default, stopping here!\n",
+		     ENDPOINT_NUMBER(endp));
 		return 0;
 	}

 	if (conn->conn->mode == MGCP_CONN_LOOPBACK) {
-		LOGPENDP(endp, DLMGCP, LOGL_NOTICE,
-			 "RTP-setup: Endpoint is in loopback mode, stopping here!\n");
+		LOGP(DLMGCP, LOGL_NOTICE,
+		     "endpoint:%x RTP-setup: Endpoint is in loopback mode, stopping here!\n",
+		     ENDPOINT_NUMBER(endp));
 		return 0;
 	}

@@ -223,13 +225,13 @@ static struct msgb *create_resp(struct mgcp_endpoint *endp, int code,
 	len = snprintf((char *)res->data, 2048, "%d %s%s%s\r\n%s",
 		       code, trans, txt, param ? param : "", sdp ? sdp : "");
 	if (len < 0) {
-		LOGPENDP(endp, DLMGCP, LOGL_ERROR, "Failed to sprintf MGCP response.\n");
+		LOGP(DLMGCP, LOGL_ERROR, "Failed to sprintf MGCP response.\n");
 		msgb_free(res);
 		return NULL;
 	}

 	res->l2h = msgb_put(res, len);
-	LOGPENDP(endp, DLMGCP, LOGL_DEBUG, "Generated response: code=%d\n", code);
+	LOGP(DLMGCP, LOGL_DEBUG, "Generated response: code=%d\n", code);
 	mgcp_disp_msg(res->l2h, msgb_l2len(res), "Generated response");

 	/*
@@ -300,13 +302,11 @@ static struct msgb *create_response_with_sdp(struct mgcp_endpoint *endp,
 					     const char *trans_id,
 					     bool add_conn_params)
 {
-	/* TODO: we may want to define another local_ip_osmux var to us for
-	   OSMUX connections. Perhaps adding a new internal API to get it based
-	   on conn type */
 	const char *addr = endp->cfg->local_ip;
 	struct msgb *sdp;
 	int rc;
 	struct msgb *result;
+	char osmux_extension[strlen("X-Osmux: 255") + 1];
 	char local_ip_addr[INET_ADDRSTRLEN];

 	sdp = msgb_alloc_headroom(4096, 128, "sdp record");
@@ -318,6 +318,13 @@ static struct msgb *create_response_with_sdp(struct mgcp_endpoint *endp,
 		addr = local_ip_addr;
 	}

+	if (conn->osmux.state == OSMUX_STATE_NEGOTIATING) {
+		sprintf(osmux_extension, "X-Osmux: %u", conn->osmux.cid);
+		conn->osmux.state = OSMUX_STATE_ACTIVATING;
+	} else {
+		osmux_extension[0] = '\0';
+	}
+
 	/* Attach optional connection parameters */
 	if (add_conn_params) {
 		rc = add_params(sdp, endp, conn);
@@ -326,8 +333,8 @@ static struct msgb *create_response_with_sdp(struct mgcp_endpoint *endp,
 	}

 	/* Attach optional OSMUX parameters */
-	if (mgcp_conn_rtp_is_osmux(conn)) {
-		rc = msgb_printf(sdp, "X-Osmux: %u\r\n", conn->osmux.cid);
+	if (conn->osmux.state == OSMUX_STATE_NEGOTIATING) {
+		rc = msgb_printf(sdp, "%s\r\n", osmux_extension);
 		if (rc < 0)
 			goto error;
 	}
@@ -423,15 +430,15 @@ struct msgb *mgcp_handle_message(struct mgcp_config *cfg, struct msgb *msg)
 /* AUEP command handler, processes the received command */
 static struct msgb *handle_audit_endpoint(struct mgcp_parse_data *p)
 {
-	LOGPENDP(p->endp, DLMGCP, LOGL_NOTICE, "AUEP: auditing endpoint ...\n");
+	LOGP(DLMGCP, LOGL_NOTICE, "AUEP: auditing endpoint ...\n");
 	return create_ok_response(p->endp, 200, "AUEP", p->trans);
 }

 /* Try to find a free port by attempting to bind on it. Also handle the
 * counter that points on the next free port. Since we have a pointer
 * to the next free port, binding should in work on the first attempt in
- * general. In case of failure the next port is tried until the whole port
- * range is tried once. */
+ * general. In case of failure the next port is tryed until the whole port
+ * range is tryed once. */
 static int allocate_port(struct mgcp_endpoint *endp, struct mgcp_conn_rtp *conn)
 {
 	int i;
@@ -462,9 +469,9 @@ static int allocate_port(struct mgcp_endpoint *endp, struct mgcp_conn_rtp *conn)

 	}

-	LOGPENDP(endp, DLMGCP, LOGL_ERROR,
-	     "Allocating a RTP/RTCP port failed %u times.\n",
-	     tries);
+	LOGP(DLMGCP, LOGL_ERROR,
+	     "Allocating a RTP/RTCP port failed %u times 0x%x.\n",
+	     tries, ENDPOINT_NUMBER(endp));
 	return -1;
 }

@@ -559,7 +566,7 @@ int check_local_cx_options(void *ctx, const char *options)
 		 * before. If yes, we must bail, an LCO must only appear once
 		 * in the LCO string */
 		for (i = 0; i < lco_seen_n; i++) {
-			if (strcasecmp(lco_seen[i], lco_identifier) == 0)
+			if (strcmp(lco_seen[i], lco_identifier) == 0)
 				goto error;
 		}
 		lco_seen[lco_seen_n] = lco_identifier;
@@ -590,9 +597,8 @@ error:
 static int set_local_cx_options(void *ctx, struct mgcp_lco *lco,
 				 const char *options)
 {
-	char *lco_id;
+	char *p_opt, *a_opt;
 	char codec[17];
-	int len;

 	if (!options)
 		return 0;
@@ -609,37 +615,18 @@ static int set_local_cx_options(void *ctx, struct mgcp_lco *lco,
 	talloc_free(lco->string);
 	lco->string = talloc_strdup(ctx, options);

-	lco_id = lco->string;
-	while ((lco_id = get_lco_identifier(lco_id))) {
-		switch (tolower(lco_id[0])) {
-		case 'p':
-			if (sscanf(lco_id + 1, ":%d-%d",
-				   &lco->pkt_period_min, &lco->pkt_period_max) == 1)
-				lco->pkt_period_max = lco->pkt_period_min;
-			break;
-		case 'a':
-			/* FIXME: LCO also supports the negotiation of more then one codec.
-			 * (e.g. a:PCMU;G726-32) But this implementation only supports a single
-			 * codec only. */
-			if (sscanf(lco_id + 1, ":%16[^,]", codec) == 1) {
-				talloc_free(lco->codec);
-				/* MGCP header is case insensive, and we'll need
-				   codec in uppercase when using it later: */
-				len = strlen(codec);
-				lco->codec = talloc_size(ctx, len + 1);
-				osmo_str_toupper_buf(lco->codec, len + 1, codec);
-			}
-			break;
-		default:
-			LOGP(DLMGCP, LOGL_NOTICE,
-			     "LCO: unhandled option: '%c'/%d in \"%s\"\n",
-			     *lco_id, *lco_id, lco->string);
-			break;
-		}
+	p_opt = strstr(lco->string, "p:");
+	if (p_opt && sscanf(p_opt, "p:%d-%d",
+			    &lco->pkt_period_min, &lco->pkt_period_max) == 1)
+		lco->pkt_period_max = lco->pkt_period_min;

-		lco_id = strchr(lco_id, ',');
-		if (!lco_id)
-			break;
+	/* FIXME: LCO also supports the negotiation of more then one codec.
+	 * (e.g. a:PCMU;G726-32) But this implementation only supports a single
+	 * codec only. */
+	a_opt = strstr(lco->string, "a:");
+	if (a_opt && sscanf(a_opt, "a:%16[^,]", codec) == 1) {
+		talloc_free(lco->codec);
+		lco->codec = talloc_strdup(ctx, codec);
 	}

 	LOGP(DLMGCP, LOGL_DEBUG,
@@ -665,13 +652,12 @@ void mgcp_rtp_end_config(struct mgcp_endpoint *endp, int expect_ssrc_change,

 	rtp->force_aligned_timing = tcfg->force_aligned_timing;
 	rtp->force_constant_ssrc = patch_ssrc ? 1 : 0;
-	rtp->rfc5993_hr_convert = tcfg->rfc5993_hr_convert;

-	LOGPENDP(endp, DLMGCP, LOGL_DEBUG,
-		 "Configuring RTP endpoint: local port %d%s%s\n",
-		 ntohs(rtp->rtp_port),
-		 rtp->force_aligned_timing ? ", force constant timing" : "",
-		 rtp->force_constant_ssrc ? ", force constant ssrc" : "");
+	LOGP(DLMGCP, LOGL_DEBUG,
+	     "Configuring RTP endpoint: local port %d%s%s\n",
+	     ntohs(rtp->rtp_port),
+	     rtp->force_aligned_timing ? ", force constant timing" : "",
+	     rtp->force_constant_ssrc ? ", force constant ssrc" : "");
 }

 uint32_t mgcp_rtp_packet_duration(struct mgcp_endpoint *endp,
@@ -693,19 +679,14 @@ uint32_t mgcp_rtp_packet_duration(struct mgcp_endpoint *endp,
 	    rtp->codec->frame_duration_den;
 }

-/*! Initializes osmux socket if not yet initialized. Parses Osmux CID from MGCP line.
- *  \param[in] endp Endpoint willing to initialize osmux
- *  \param[in] line Line X-Osmux from MGCP header msg to parse
- *  \returns OSMUX CID, -1 for wildcard, -2 on parse error, -3 on osmux initalize error
- */
 static int mgcp_osmux_setup(struct mgcp_endpoint *endp, const char *line)
 {
 	if (!endp->cfg->osmux_init) {
 		if (osmux_init(OSMUX_ROLE_BSC, endp->cfg) < 0) {
-			LOGPENDP(endp, DLMGCP, LOGL_ERROR, "Cannot init OSMUX\n");
-			return -3;
+			LOGP(DLMGCP, LOGL_ERROR, "Cannot init OSMUX\n");
+			return -1;
 		}
-		LOGPENDP(endp, DLMGCP, LOGL_NOTICE, "OSMUX socket has been set up\n");
+		LOGP(DLMGCP, LOGL_NOTICE, "OSMUX socket has been set up\n");
 	}

 	return mgcp_parse_osmux_cid(line);
@@ -731,8 +712,9 @@ static int handle_codec_info(struct mgcp_conn_rtp *conn,
 		mgcp_codec_reset_all(conn);
 		rc = mgcp_parse_sdp_data(endp, conn, p);
 		if (rc != 0) {
-			LOGPCONN(conn->conn, DLMGCP,  LOGL_ERROR,
-				 "%s: sdp not parseable\n", cmd);
+			LOGP(DLMGCP, LOGL_ERROR,
+			     "%s: endpoint:%x sdp not parseable\n", cmd,
+			     ENDPOINT_NUMBER(endp));

 			/* See also RFC 3661: Protocol error */
 			return 510;
@@ -741,7 +723,7 @@ static int handle_codec_info(struct mgcp_conn_rtp *conn,
 		/* When no SDP is available, we use the codec information from
 		 * the local connection options (if present) */
 		mgcp_codec_reset_all(conn);
-		rc = mgcp_codec_add(conn, PTYPE_UNDEFINED, endp->local_options.codec, NULL);
+		rc = mgcp_codec_add(conn, PTYPE_UNDEFINED, endp->local_options.codec);
 		if (rc != 0)
 			goto error;
 	}
@@ -752,7 +734,7 @@ static int handle_codec_info(struct mgcp_conn_rtp *conn,
 		 * than it makes sense to pick a sane default: (payload-type 0,
 		 * PCMU), see also: OS#2658 */
 		mgcp_codec_reset_all(conn);
-		rc = mgcp_codec_add(conn, 0, NULL, NULL);
+		rc = mgcp_codec_add(conn, 0, NULL);
 		if (rc != 0)
 			goto error;
 	}
@@ -764,8 +746,9 @@ static int handle_codec_info(struct mgcp_conn_rtp *conn,
 	return 0;

 error:
-	LOGPCONN(conn->conn, DLMGCP, LOGL_ERROR,
-	     "%s: codec negotiation failure\n", cmd);
+	LOGP(DLMGCP, LOGL_ERROR,
+	     "%s: endpoint:0x%x codec negotiation failure\n", cmd,
+	     ENDPOINT_NUMBER(endp));

 	/* See also RFC 3661: Codec negotiation failure */
 	return 534;
@@ -785,10 +768,11 @@ static bool parse_x_osmo_ign(struct mgcp_endpoint *endp, char *line)
 		if (!token)
 			break;

-		if (!strcasecmp(token, "C"))
+		if (!strcmp(token, "C"))
 			endp->x_osmo_ign |= MGCP_X_OSMO_IGN_CALLID;
 		else
-			LOGPENDP(endp, DLMGCP, LOGL_ERROR, "received unknown X-Osmo-IGN item '%s'\n", token);
+			LOGP(DLMGCP, LOGL_ERROR, "endpoint 0x%x: received unknown X-Osmo-IGN item '%s'\n",
+			     ENDPOINT_NUMBER(endp), token);
 	}

 	return true;
@@ -805,20 +789,20 @@ static struct msgb *handle_create_con(struct mgcp_parse_data *p)
 	const char *callid = NULL;
 	const char *mode = NULL;
 	char *line;
-	int have_sdp = 0, osmux_cid = -2;
+	int have_sdp = 0, osmux_cid = -1;
 	struct mgcp_conn_rtp *conn = NULL;
 	struct mgcp_conn *_conn = NULL;
 	char conn_name[512];
 	int rc;

-	LOGPENDP(endp, DLMGCP, LOGL_NOTICE, "CRCX: creating new connection ...\n");
+	LOGP(DLMGCP, LOGL_NOTICE, "CRCX: creating new connection ...\n");

 	/* parse CallID C: and LocalParameters L: */
 	for_each_line(line, p->save) {
 		if (!mgcp_check_param(endp, line))
 			continue;

-		switch (toupper(line[0])) {
+		switch (line[0]) {
 		case 'L':
 			local_options = (const char *)line + 3;
 			break;
@@ -836,7 +820,7 @@ static struct msgb *handle_create_con(struct mgcp_parse_data *p)
 			mode = (const char *)line + 3;
 			break;
 		case 'X':
-			if (strncasecmp("Osmux: ", line + 2, strlen("Osmux: ")) == 0) {
+			if (strncmp("Osmux: ", line + 2, strlen("Osmux: ")) == 0) {
 				/* If osmux is disabled, just skip setting it up */
 				if (!p->endp->cfg->osmux)
 					break;
@@ -853,8 +837,9 @@ static struct msgb *handle_create_con(struct mgcp_parse_data *p)
 			have_sdp = 1;
 			goto mgcp_header_done;
 		default:
-			LOGPENDP(endp, DLMGCP, LOGL_NOTICE,
-				 "CRCX: unhandled option: '%c'/%d\n", *line, *line);
+			LOGP(DLMGCP, LOGL_NOTICE,
+			     "CRCX: endpoint:%x unhandled option: '%c'/%d\n",
+			     ENDPOINT_NUMBER(endp), *line, *line);
 			rate_ctr_inc(&rate_ctrs->ctr[MGCP_CRCX_FAIL_UNHANDLED_PARAM]);
 			return create_err_response(NULL, 539, "CRCX", p->trans);
 			break;
@@ -864,24 +849,26 @@ static struct msgb *handle_create_con(struct mgcp_parse_data *p)
 mgcp_header_done:
 	/* Check parameters */
 	if (!callid) {
-		LOGPENDP(endp, DLMGCP, LOGL_ERROR,
-			 "CRCX: insufficient parameters, missing callid\n");
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "CRCX: endpoint:%x insufficient parameters, missing callid\n",
+		     ENDPOINT_NUMBER(endp));
 		rate_ctr_inc(&rate_ctrs->ctr[MGCP_CRCX_FAIL_MISSING_CALLID]);
 		return create_err_response(endp, 516, "CRCX", p->trans);
 	}

 	if (!mode) {
-		LOGPENDP(endp, DLMGCP, LOGL_ERROR,
-			 "CRCX: insufficient parameters, missing mode\n");
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "CRCX: endpoint:%x insufficient parameters, missing mode\n",
+		     ENDPOINT_NUMBER(endp));
 		rate_ctr_inc(&rate_ctrs->ctr[MGCP_CRCX_FAIL_INVALID_MODE]);
 		return create_err_response(endp, 517, "CRCX", p->trans);
 	}

 	/* Check if we are able to accept the creation of another connection */
 	if (llist_count(&endp->conns) >= endp->type->max_conns) {
-		LOGPENDP(endp, DLMGCP, LOGL_ERROR,
-			"CRCX: endpoint full, max. %i connections allowed!\n",
-			endp->type->max_conns);
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "CRCX: endpoint:%x endpoint full, max. %i connections allowed!\n",
+		     endp->type->max_conns, ENDPOINT_NUMBER(endp));
 		if (tcfg->force_realloc) {
 			/* There is no more room for a connection, make some
 			 * room by blindly tossing the oldest of the two two
@@ -898,9 +885,9 @@ mgcp_header_done:
 	/* Check if this endpoint already serves a call, if so, check if the
 	 * callids match up so that we are sure that this is our call */
 	if (endp->callid && mgcp_verify_call_id(endp, callid)) {
-		LOGPENDP(endp, DLMGCP, LOGL_ERROR,
-			 "CRCX: already seized by other call (%s)\n",
-			 endp->callid);
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "CRCX: endpoint:0x%x allready seized by other call (%s)\n",
+		     ENDPOINT_NUMBER(endp), endp->callid);
 		if (tcfg->force_realloc)
 			/* This is not our call, toss everything by releasing
 			 * the entire endpoint. (rude!) */
@@ -919,10 +906,11 @@ mgcp_header_done:
 	endp->callid = talloc_strdup(tcfg->endpoints, callid);

 	snprintf(conn_name, sizeof(conn_name), "%s", callid);
-	_conn = mgcp_conn_alloc(tcfg->endpoints, endp, MGCP_CONN_TYPE_RTP, conn_name);
+	_conn = mgcp_conn_alloc(NULL, endp, MGCP_CONN_TYPE_RTP, conn_name);
 	if (!_conn) {
-		LOGPENDP(endp, DLMGCP, LOGL_ERROR,
-			 "CRCX: unable to allocate RTP connection\n");
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "CRCX: endpoint:0x%x unable to allocate RTP connection\n",
+		     ENDPOINT_NUMBER(endp));
 		rate_ctr_inc(&rate_ctrs->ctr[MGCP_CRCX_FAIL_ALLOC_CONN]);
 		goto error2;

@@ -939,15 +927,13 @@ mgcp_header_done:
 	/* Annotate Osmux circuit ID and set it to negotiating state until this
 	 * is fully set up from the dummy load. */
 	conn->osmux.state = OSMUX_STATE_DISABLED;
-	if (osmux_cid >= -1) { /* -1 is wilcard, alloc next avail CID */
-		conn->osmux.state = OSMUX_STATE_ACTIVATING;
-		if (conn_osmux_allocate_cid(conn, osmux_cid) == -1) {
-			rate_ctr_inc(&rate_ctrs->ctr[MGCP_CRCX_FAIL_NO_OSMUX]);
-			goto error2;
-		}
+	if (osmux_cid >= 0) {
+		conn->osmux.cid = osmux_cid;
+		conn->osmux.state = OSMUX_STATE_NEGOTIATING;
 	} else if (endp->cfg->osmux == OSMUX_USAGE_ONLY) {
-		LOGPCONN(_conn, DLMGCP, LOGL_ERROR,
-			 "CRCX: osmux only and no osmux offered\n");
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "CRCX: endpoint:0x%x osmux only and no osmux offered\n",
+		     ENDPOINT_NUMBER(endp));
 		rate_ctr_inc(&rate_ctrs->ctr[MGCP_CRCX_FAIL_NO_OSMUX]);
 		goto error2;
 	}
@@ -957,8 +943,9 @@ mgcp_header_done:
 		rc = set_local_cx_options(endp->tcfg->endpoints,
 					  &endp->local_options, local_options);
 		if (rc != 0) {
-			LOGPCONN(_conn, DLMGCP, LOGL_ERROR,
-				 "CRCX: inavlid local connection options!\n");
+			LOGP(DLMGCP, LOGL_ERROR,
+			     "CRCX: endpoint:%x inavlid local connection options!\n",
+			     ENDPOINT_NUMBER(endp));
 			error_code = rc;
 			rate_ctr_inc(&rate_ctrs->ctr[MGCP_CRCX_FAIL_INVALID_CONN_OPTIONS]);
 			goto error2;
@@ -988,8 +975,9 @@ mgcp_header_done:
 	if (conn->conn->mode != MGCP_CONN_LOOPBACK
 	    && conn->conn->mode != MGCP_CONN_RECV_ONLY
 	    && conn->end.rtp_port == 0) {
-		LOGPCONN(_conn, DLMGCP, LOGL_ERROR,
-			 "CRCX: selected connection mode type requires an opposite end!\n");
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "CRCX: endpoint:%x selected connection mode type requires an opposite end!\n",
+		     ENDPOINT_NUMBER(endp));
 		error_code = 527;
 		rate_ctr_inc(&rate_ctrs->ctr[MGCP_CRCX_FAIL_NO_REMOTE_CONN_DESC]);
 		goto error2;
@@ -1001,8 +989,9 @@ mgcp_header_done:
 	}

 	if (setup_rtp_processing(endp, conn) != 0) {
-		LOGPCONN(_conn, DLMGCP, LOGL_ERROR,
-			 "CRCX: could not start RTP processing!\n");
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "CRCX: endpoint:0x%x could not start RTP processing!\n",
+		     ENDPOINT_NUMBER(endp));
 		rate_ctr_inc(&rate_ctrs->ctr[MGCP_CRCX_FAIL_START_RTP]);
 		goto error2;
 	}
@@ -1014,8 +1003,9 @@ mgcp_header_done:
 				       MGCP_ENDP_CRCX, p->trans);
 		switch (rc) {
 		case MGCP_POLICY_REJECT:
-			LOGPCONN(_conn, DLMGCP, LOGL_NOTICE,
-				 "CRCX: CRCX rejected by policy\n");
+			LOGP(DLMGCP, LOGL_NOTICE,
+			     "CRCX: endpoint:0x%x CRCX rejected by policy\n",
+			     ENDPOINT_NUMBER(endp));
 			mgcp_endp_release(endp);
 			rate_ctr_inc(&rate_ctrs->ctr[MGCP_CRCX_FAIL_REJECTED_BY_POLICY]);
 			return create_err_response(endp, 400, "CRCX", p->trans);
@@ -1030,8 +1020,9 @@ mgcp_header_done:
 		}
 	}

-	LOGPCONN(conn->conn, DLMGCP, LOGL_DEBUG,
-		 "CRCX: Creating connection: port: %u\n", conn->end.local_port);
+	LOGP(DLMGCP, LOGL_DEBUG,
+	     "CRCX: endpoint:0x%x Creating connection: CI: %s port: %u\n",
+	     ENDPOINT_NUMBER(endp), conn->conn->id, conn->end.local_port);
 	if (p->cfg->change_cb)
 		p->cfg->change_cb(tcfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_CRCX);

@@ -1041,14 +1032,16 @@ mgcp_header_done:
 	    && tcfg->keepalive_interval != MGCP_KEEPALIVE_NEVER)
 		send_dummy(endp, conn);

-	LOGPCONN(_conn, DLMGCP, LOGL_NOTICE,
-		 "CRCX: connection successfully created\n");
+	LOGP(DLMGCP, LOGL_NOTICE,
+	     "CRCX: endpoint:0x%x connection successfully created\n",
+	     ENDPOINT_NUMBER(endp));
 	rate_ctr_inc(&rate_ctrs->ctr[MGCP_CRCX_SUCCESS]);
 	return create_response_with_sdp(endp, conn, "CRCX", p->trans, true);
 error2:
 	mgcp_endp_release(endp);
-	LOGPENDP(endp, DLMGCP, LOGL_NOTICE,
-		 "CRCX: unable to create connection\n");
+	LOGP(DLMGCP, LOGL_NOTICE,
+	     "CRCX: endpoint:0x%x unable to create connection\n",
+	     ENDPOINT_NUMBER(endp));
 	return create_err_response(endp, error_code, "CRCX", p->trans);
 }

@@ -1070,22 +1063,23 @@ static struct msgb *handle_modify_con(struct mgcp_parse_data *p)
 	const char *mode = NULL;
 	struct mgcp_conn_rtp *conn = NULL;
        const char *conn_id = NULL;
-	int osmux_cid = -2;
 	int rc;

-	LOGPENDP(endp, DLMGCP, LOGL_NOTICE, "MDCX: modifying existing connection ...\n");
+	LOGP(DLMGCP, LOGL_NOTICE, "MDCX: modifying existing connection ...\n");

 	/* Prohibit wildcarded requests */
 	if (endp->wildcarded_req) {
-		LOGPENDP(endp, DLMGCP, LOGL_ERROR,
-			 "MDCX: wildcarded endpoint names not supported.\n");
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "MDCX: endpoint:0x%x wildcarded endpoint names not supported.\n",
+		     ENDPOINT_NUMBER(endp));
 		rate_ctr_inc(&rate_ctrs->ctr[MGCP_MDCX_FAIL_WILDCARD]);
 		return create_err_response(endp, 507, "MDCX", p->trans);
 	}

 	if (llist_count(&endp->conns) <= 0) {
-		LOGPENDP(endp, DLMGCP, LOGL_ERROR,
-			 "MDCX: endpoint is not holding a connection.\n");
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "MDCX: endpoint:0x%x endpoint is not holding a connection.\n",
+		     ENDPOINT_NUMBER(endp));
 		rate_ctr_inc(&rate_ctrs->ctr[MGCP_MDCX_FAIL_NO_CONN]);
 		return create_err_response(endp, 400, "MDCX", p->trans);
 	}
@@ -1094,7 +1088,7 @@ static struct msgb *handle_modify_con(struct mgcp_parse_data *p)
 		if (!mgcp_check_param(endp, line))
 			continue;

-		switch (toupper(line[0])) {
+		switch (line[0]) {
 		case 'C':
 			if (mgcp_verify_call_id(endp, line + 3) != 0) {
 				rate_ctr_inc(&rate_ctrs->ctr[MGCP_MDCX_FAIL_INVALID_CALLID]);
@@ -1116,26 +1110,16 @@ static struct msgb *handle_modify_con(struct mgcp_parse_data *p)
 			mode = (const char *)line + 3;
 			break;
 		case 'Z':
-			silent = strcasecmp("noanswer", line + 3) == 0;
-			break;
-		case 'X':
-			if (strncasecmp("Osmux: ", line + 2, strlen("Osmux: ")) == 0) {
-				/* If osmux is disabled, just skip setting it up */
-				if (!p->endp->cfg->osmux)
-					break;
-				osmux_cid = mgcp_osmux_setup(endp, line);
-				break;
-			}
-			/* Ignore unknown X-headers */
+			silent = strcmp("noanswer", line + 3) == 0;
 			break;
 		case '\0':
 			have_sdp = 1;
 			goto mgcp_header_done;
 			break;
 		default:
-			LOGPENDP(endp, DLMGCP, LOGL_NOTICE,
-				 "MDCX: Unhandled MGCP option: '%c'/%d\n",
-				 line[0], line[0]);
+			LOGP(DLMGCP, LOGL_NOTICE,
+			     "MDCX: endpoint:0x%x Unhandled MGCP option: '%c'/%d\n",
+			     ENDPOINT_NUMBER(endp), line[0], line[0]);
 			rate_ctr_inc(&rate_ctrs->ctr[MGCP_MDCX_FAIL_UNHANDLED_PARAM]);
 			return create_err_response(NULL, 539, "MDCX", p->trans);
 			break;
@@ -1144,8 +1128,9 @@ static struct msgb *handle_modify_con(struct mgcp_parse_data *p)

 mgcp_header_done:
 	if (!conn_id) {
-		LOGPENDP(endp, DLMGCP, LOGL_ERROR,
-			 "MDCX: insufficient parameters, missing ci (connectionIdentifier)\n");
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "MDCX: endpoint:0x%x insufficient parameters, missing ci (connectionIdentifier)\n",
+		     ENDPOINT_NUMBER(endp));
 		rate_ctr_inc(&rate_ctrs->ctr[MGCP_MDCX_FAIL_NO_CONNID]);
 		return create_err_response(endp, 515, "MDCX", p->trans);
 	}
@@ -1165,15 +1150,16 @@ mgcp_header_done:
 			goto error3;
 		}
 	} else
-		conn->conn->mode = conn->conn->mode_orig;
+			conn->conn->mode = conn->conn->mode_orig;

 	/* Set local connection options, if present */
 	if (local_options) {
 		rc = set_local_cx_options(endp->tcfg->endpoints,
 					  &endp->local_options, local_options);
 		if (rc != 0) {
-			LOGPCONN(conn->conn, DLMGCP, LOGL_ERROR,
-				 "MDCX: invalid local connection options!\n");
+			LOGP(DLMGCP, LOGL_ERROR,
+			     "MDCX: endpoint:%x invalid local connection options!\n",
+			     ENDPOINT_NUMBER(endp));
 			error_code = rc;
 			rate_ctr_inc(&rate_ctrs->ctr[MGCP_MDCX_FAIL_INVALID_CONN_OPTIONS]);
 			goto error3;
@@ -1192,32 +1178,14 @@ mgcp_header_done:
 	if (conn->conn->mode != MGCP_CONN_LOOPBACK
 	    && conn->conn->mode != MGCP_CONN_RECV_ONLY
 	    && conn->end.rtp_port == 0) {
-		LOGPCONN(conn->conn, DLMGCP, LOGL_ERROR,
-			 "MDCX: selected connection mode type requires an opposite end!\n");
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "MDCX: endpoint:%x selected connection mode type requires an opposite end!\n",
+		     ENDPOINT_NUMBER(endp));
 		error_code = 527;
 		rate_ctr_inc(&rate_ctrs->ctr[MGCP_MDCX_FAIL_NO_REMOTE_CONN_DESC]);
 		goto error3;
 	}

-	if (mgcp_conn_rtp_is_osmux(conn)) {
-		OSMO_ASSERT(conn->osmux.cid_allocated);
-		if (osmux_cid < -1) {
-			LOGPCONN(conn->conn, DLMGCP, LOGL_ERROR,
-				 "MDCX: Failed to parse Osmux CID!\n");
-			goto error3;
-		} else if (osmux_cid == -1) {
-			LOGPCONN(conn->conn, DLMGCP, LOGL_ERROR,
-				 "MDCX: wilcard in MDCX is not supported!\n");
-			goto error3;
-		} else if (osmux_cid != (int) conn->osmux.cid) {
-			LOGPCONN(conn->conn, DLMGCP, LOGL_ERROR,
-				 "MDCX: changing already allocated CID is not supported!\n");
-			goto error3;
-		}
-		/* TODO: In the future (when we have recvCID!=sendCID), we need to
-		   tell Osmux code that osmux_cid is to be used as sendCID for
-		   that conn. */
-	}

 	if (setup_rtp_processing(endp, conn) != 0) {
 		rate_ctr_inc(&rate_ctrs->ctr[MGCP_MDCX_FAIL_START_RTP]);
@@ -1232,8 +1200,9 @@ mgcp_header_done:
 				       MGCP_ENDP_MDCX, p->trans);
 		switch (rc) {
 		case MGCP_POLICY_REJECT:
-			LOGPCONN(conn->conn, DLMGCP, LOGL_NOTICE,
-				 "MDCX: rejected by policy\n");
+			LOGP(DLMGCP, LOGL_NOTICE,
+			     "MDCX: endpoint:0x%x rejected by policy\n",
+			     ENDPOINT_NUMBER(endp));
 			rate_ctr_inc(&rate_ctrs->ctr[MGCP_MDCX_FAIL_REJECTED_BY_POLICY]);
 			if (silent)
 				goto out_silent;
@@ -1241,8 +1210,9 @@ mgcp_header_done:
 			break;
 		case MGCP_POLICY_DEFER:
 			/* stop processing */
-			LOGPCONN(conn->conn, DLMGCP, LOGL_DEBUG,
-				 "MDCX: deferred by policy\n");
+			LOGP(DLMGCP, LOGL_DEBUG,
+			     "MDCX: endpoint:0x%x deferred by policy\n",
+			     ENDPOINT_NUMBER(endp));
 			rate_ctr_inc(&rate_ctrs->ctr[MGCP_MDCX_DEFERRED_BY_POLICY]);
 			return NULL;
 			break;
@@ -1255,8 +1225,9 @@ mgcp_header_done:
 	mgcp_rtp_end_config(endp, 1, &conn->end);

 	/* modify */
-	LOGPCONN(conn->conn, DLMGCP, LOGL_DEBUG,
-		 "MDCX: modified conn:%s\n", mgcp_conn_dump(conn->conn));
+	LOGP(DLMGCP, LOGL_DEBUG,
+	     "MDCX: endpoint:0x%x modified conn:%s\n",
+	     ENDPOINT_NUMBER(endp), mgcp_conn_dump(conn->conn));
 	if (p->cfg->change_cb)
 		p->cfg->change_cb(endp->tcfg, ENDPOINT_NUMBER(endp),
 				  MGCP_ENDP_MDCX);
@@ -1271,14 +1242,16 @@ mgcp_header_done:
 	if (silent)
 		goto out_silent;

-	LOGPCONN(conn->conn, DLMGCP, LOGL_NOTICE,
-		 "MDCX: connection successfully modified\n");
+	LOGP(DLMGCP, LOGL_NOTICE,
+	     "MDCX: endpoint:0x%x connection successfully modified\n",
+	     ENDPOINT_NUMBER(endp));
 	return create_response_with_sdp(endp, conn, "MDCX", p->trans, false);
 error3:
 	return create_err_response(endp, error_code, "MDCX", p->trans);

 out_silent:
-	LOGPENDP(endp, DLMGCP, LOGL_DEBUG, "MDCX: silent exit\n");
+	LOGP(DLMGCP, LOGL_DEBUG, "MDCX: endpoint:0x%x silent exit\n",
+	     ENDPOINT_NUMBER(endp));
 	return NULL;
 }

@@ -1295,20 +1268,23 @@ static struct msgb *handle_delete_con(struct mgcp_parse_data *p)
 	const char *conn_id = NULL;
 	struct mgcp_conn_rtp *conn = NULL;

-	LOGPENDP(endp, DLMGCP, LOGL_NOTICE,
-		 "DLCX: deleting connection ...\n");
+	LOGP(DLMGCP, LOGL_NOTICE,
+	     "DLCX: endpoint:0x%x deleting connection ...\n",
+	     ENDPOINT_NUMBER(endp));

 	/* Prohibit wildcarded requests */
 	if (endp->wildcarded_req) {
-		LOGPENDP(endp, DLMGCP, LOGL_ERROR,
-			 "DLCX: wildcarded endpoint names not supported.\n");
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "DLCX: endpoint:0x%x wildcarded endpoint names not supported.\n",
+		     ENDPOINT_NUMBER(endp));
 		rate_ctr_inc(&rate_ctrs->ctr[MGCP_DLCX_FAIL_WILDCARD]);
 		return create_err_response(endp, 507, "DLCX", p->trans);
 	}

 	if (llist_count(&endp->conns) <= 0) {
-		LOGPENDP(endp, DLMGCP, LOGL_ERROR,
-			 "DLCX: endpoint is not holding a connection.\n");
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "DLCX: endpoint:0x%x endpoint is not holding a connection.\n",
+		     ENDPOINT_NUMBER(endp));
 		rate_ctr_inc(&rate_ctrs->ctr[MGCP_DLCX_FAIL_NO_CONN]);
 		return create_err_response(endp, 515, "DLCX", p->trans);
 	}
@@ -1317,7 +1293,7 @@ static struct msgb *handle_delete_con(struct mgcp_parse_data *p)
 		if (!mgcp_check_param(endp, line))
 			continue;

-		switch (toupper(line[0])) {
+		switch (line[0]) {
 		case 'C':
 			if (mgcp_verify_call_id(endp, line + 3) != 0) {
 				error_code = 516;
@@ -1333,12 +1309,12 @@ static struct msgb *handle_delete_con(struct mgcp_parse_data *p)
 			}
 			break;
 		case 'Z':
-			silent = strcasecmp("noanswer", line + 3) == 0;
+			silent = strcmp("noanswer", line + 3) == 0;
 			break;
 		default:
-			LOGPENDP(endp, DLMGCP, LOGL_NOTICE,
-				 "DLCX: Unhandled MGCP option: '%c'/%d\n",
-				 line[0], line[0]);
+			LOGP(DLMGCP, LOGL_NOTICE,
+			     "DLCX: endpoint:0x%x Unhandled MGCP option: '%c'/%d\n",
+			     ENDPOINT_NUMBER(endp), line[0], line[0]);
 			rate_ctr_inc(&rate_ctrs->ctr[MGCP_DLCX_FAIL_UNHANDLED_PARAM]);
 			return create_err_response(NULL, 539, "DLCX", p->trans);
 			break;
@@ -1352,7 +1328,9 @@ static struct msgb *handle_delete_con(struct mgcp_parse_data *p)
 				       MGCP_ENDP_DLCX, p->trans);
 		switch (rc) {
 		case MGCP_POLICY_REJECT:
-			LOGPENDP(endp, DLMGCP, LOGL_NOTICE, "DLCX: rejected by policy\n");
+			LOGP(DLMGCP, LOGL_NOTICE,
+			     "DLCX: endpoint:0x%x rejected by policy\n",
+			     ENDPOINT_NUMBER(endp));
 			rate_ctr_inc(&rate_ctrs->ctr[MGCP_DLCX_FAIL_REJECTED_BY_POLICY]);
 			if (silent)
 				goto out_silent;
@@ -1374,9 +1352,9 @@ static struct msgb *handle_delete_con(struct mgcp_parse_data *p)
 	 * RFC3435 Section F.7) */
 	if (!conn_id) {
 		int num_conns = llist_count(&endp->conns);
-		LOGPENDP(endp, DLMGCP, LOGL_NOTICE,
-			 "DLCX: missing ci (connectionIdentifier), will remove all connections (%d total) at once\n",
-			 num_conns);
+		LOGP(DLMGCP, LOGL_NOTICE,
+		     "DLCX: endpoint:0x%x missing ci (connectionIdentifier), will remove all connections (%d total) at once\n",
+		     num_conns, ENDPOINT_NUMBER(endp));

 		if (num_conns > 0)
 			rate_ctr_add(&rate_ctrs->ctr[MGCP_DLCX_SUCCESS], num_conns);
@@ -1399,17 +1377,20 @@ static struct msgb *handle_delete_con(struct mgcp_parse_data *p)
 	mgcp_format_stats(stats, sizeof(stats), conn->conn);

 	/* delete connection */
-	LOGPCONN(conn->conn, DLMGCP, LOGL_DEBUG, "DLCX: deleting conn:%s\n",
-		 mgcp_conn_dump(conn->conn));
+	LOGP(DLMGCP, LOGL_DEBUG, "DLCX: endpoint:0x%x deleting conn:%s\n",
+	     ENDPOINT_NUMBER(endp), mgcp_conn_dump(conn->conn));
 	mgcp_conn_free(endp, conn_id);
-	LOGPENDP(endp, DLMGCP, LOGL_NOTICE,
-		 "DLCX: connection successfully deleted\n");
+	LOGP(DLMGCP, LOGL_NOTICE,
+	     "DLCX: endpoint:0x%x connection successfully deleted\n",
+	     ENDPOINT_NUMBER(endp));

 	/* When all connections are closed, the endpoint will be released
 	 * in order to be ready to be used by another call. */
 	if (llist_count(&endp->conns) <= 0) {
 		mgcp_endp_release(endp);
-		LOGPENDP(endp, DLMGCP, LOGL_DEBUG, "DLCX: endpoint released\n");
+		LOGP(DLMGCP, LOGL_DEBUG,
+		     "DLCX: endpoint:0x%x endpoint released\n",
+		     ENDPOINT_NUMBER(endp));
 	}

 	if (p->cfg->change_cb)
@@ -1425,7 +1406,8 @@ error3:
 	return create_err_response(endp, error_code, "DLCX", p->trans);

 out_silent:
-	LOGPENDP(endp, DLMGCP, LOGL_DEBUG, "DLCX: silent exit\n");
+	LOGP(DLMGCP, LOGL_DEBUG, "DLCX: endpoint:0x%x silent exit\n",
+	     ENDPOINT_NUMBER(endp));
 	return NULL;
 }

@@ -1468,7 +1450,7 @@ static struct msgb *handle_noti_req(struct mgcp_parse_data *p)
 	LOGP(DLMGCP, LOGL_NOTICE, "RQNT: processing request for notification ...\n");

 	for_each_line(line, p->save) {
-		switch (toupper(line[0])) {
+		switch (line[0]) {
 		case 'S':
 			tone = extract_tone(line);
 			break;
@@ -1551,7 +1533,7 @@ static int free_rate_counter_group(struct rate_ctr_group *rate_ctr_group)
 	return 0;
 }

-static int alloc_mgcp_rate_counters(struct mgcp_trunk_config *trunk, void *ctx)
+static void alloc_mgcp_rate_counters(struct mgcp_trunk_config *trunk, void *ctx)
 {
 	/* FIXME: Each new rate counter group requires a unique index. At the
 	 * moment we generate an index using a counter, but perhaps there is
@@ -1563,34 +1545,25 @@ static int alloc_mgcp_rate_counters(struct mgcp_trunk_config *trunk, void *ctx)

 	if (trunk->mgcp_crcx_ctr_group == NULL) {
 		trunk->mgcp_crcx_ctr_group = rate_ctr_group_alloc(ctx, &mgcp_crcx_ctr_group_desc, crcx_rate_ctr_index);
-		if (!trunk->mgcp_crcx_ctr_group)
-			return -1;
 		talloc_set_destructor(trunk->mgcp_crcx_ctr_group, free_rate_counter_group);
 		crcx_rate_ctr_index++;
 	}
 	if (trunk->mgcp_mdcx_ctr_group == NULL) {
 		trunk->mgcp_mdcx_ctr_group = rate_ctr_group_alloc(ctx, &mgcp_mdcx_ctr_group_desc, mdcx_rate_ctr_index);
-		if (!trunk->mgcp_mdcx_ctr_group)
-			return -1;
 		talloc_set_destructor(trunk->mgcp_mdcx_ctr_group, free_rate_counter_group);
 		mdcx_rate_ctr_index++;
 	}
 	if (trunk->mgcp_dlcx_ctr_group == NULL) {
 		trunk->mgcp_dlcx_ctr_group = rate_ctr_group_alloc(ctx, &mgcp_dlcx_ctr_group_desc, dlcx_rate_ctr_index);
-		if (!trunk->mgcp_dlcx_ctr_group)
-			return -1;
 		talloc_set_destructor(trunk->mgcp_dlcx_ctr_group, free_rate_counter_group);
 		dlcx_rate_ctr_index++;
 	}
 	if (trunk->all_rtp_conn_stats == NULL) {
 		trunk->all_rtp_conn_stats = rate_ctr_group_alloc(ctx, &all_rtp_conn_rate_ctr_group_desc,
 								 all_rtp_conn_rate_ctr_index);
-		if (!trunk->all_rtp_conn_stats)
-			return -1;
 		talloc_set_destructor(trunk->all_rtp_conn_stats, free_rate_counter_group);
 		all_rtp_conn_rate_ctr_index++;
 	}
-	return 0;
 }

 /*! allocate configuration with default values.
@@ -1630,10 +1603,7 @@ struct mgcp_config *mgcp_config_alloc(void)
 	cfg->trunk.audio_send_name = 1;
 	cfg->trunk.omit_rtcp = 0;
 	mgcp_trunk_set_keepalive(&cfg->trunk, MGCP_KEEPALIVE_ONCE);
-	if (alloc_mgcp_rate_counters(&cfg->trunk, cfg) < 0) {
-		talloc_free(cfg);
-		return NULL;
-	}
+	alloc_mgcp_rate_counters(&cfg->trunk, cfg);

 	INIT_LLIST_HEAD(&cfg->trunks);

@@ -1706,18 +1676,9 @@ int mgcp_endpoints_allocate(struct mgcp_trunk_config *tcfg)
 		tcfg->endpoints[i].cfg = tcfg->cfg;
 		tcfg->endpoints[i].tcfg = tcfg;

-		switch (tcfg->trunk_type) {
-		case MGCP_TRUNK_VIRTUAL:
-			tcfg->endpoints[i].type = &ep_typeset.rtp;
-			break;
-		case MGCP_TRUNK_E1:
-			/* FIXME: Implement E1 allocation */
-			LOGP(DLMGCP, LOGL_FATAL, "E1 trunks not implemented!\n");
-			break;
-		default:
-			osmo_panic("Cannot allocate unimplemented trunk type %d! %s:%d\n",
-				   tcfg->trunk_type, __FILE__, __LINE__);
-		}
+		/* NOTE: Currently all endpoints are of type RTP, this will
+		 * change when new variations are implemented */
+		tcfg->endpoints[i].type = &ep_typeset.rtp;
 	}

 	tcfg->number_endpoints = tcfg->vty_number_endpoints;
--- a/src/libosmo-mgcp/mgcp_sdp.c
+++ b/src/libosmo-mgcp/mgcp_sdp.c
@@ -26,15 +26,12 @@
 #include <osmocom/mgcp/mgcp_msg.h>
 #include <osmocom/mgcp/mgcp_endp.h>
 #include <osmocom/mgcp/mgcp_codec.h>
-#include <osmocom/mgcp/mgcp_sdp.h>

 #include <errno.h>
-#include <stdlib.h>
-#include <limits.h>

-/* Two structs to store intermediate parsing results. The function
- * mgcp_parse_sdp_data() is using the following two structs as temporary
- * storage for parsing the SDP codec information. */
+/* A struct to store intermediate parsing results. The function
+ * mgcp_parse_sdp_data() is using it as temporary storage for parsing the SDP
+ * codec information. */
 struct sdp_rtp_map {
 	/* the type */
 	int payload_type;
@@ -46,11 +43,6 @@ struct sdp_rtp_map {
 	int rate;
 	int channels;
 };
-struct sdp_fmtp_param {
-	int payload_type;
-	struct mgcp_codec_param param;
-};
-

 /* Helper function to extrapolate missing codec parameters in a codec mao from
 * an already filled in payload_type, called from: mgcp_parse_sdp_data() */
@@ -131,8 +123,7 @@ static int pt_from_sdp(void *ctx, struct sdp_rtp_map *codecs,
 	char *str;
 	char *str_ptr;
 	char *pt_str;
-	char *pt_end;
-	unsigned long int pt;
+	unsigned int pt;
 	unsigned int count = 0;
 	unsigned int i;

@@ -157,14 +148,7 @@ static int pt_from_sdp(void *ctx, struct sdp_rtp_map *codecs,
 		if (!pt_str)
 			break;

-		errno = 0;
-		pt = strtoul(pt_str, &pt_end, 0);
-		if ((errno == ERANGE && pt == ULONG_MAX) || (errno && !pt) ||
-		    pt_str == pt_end)
-			goto error;
-
-		if (pt >> 7) /* PT is 7 bit field, higher values not allowed */
-			goto error;
+		pt = atoi(pt_str);

 		/* Do not allow duplicate payload types */
 		for (i = 0; i < count; i++)
@@ -183,92 +167,6 @@ error:
 	return -EINVAL;
 }

-/* Extract fmtp parameters from SDP, called from: mgcp_parse_sdp_data() */
-static int fmtp_from_sdp(void *ctx, struct sdp_fmtp_param *fmtp_param, char *sdp)
-{
-	char *str;
-	char *str_ptr;
-	char *param_str;
-	unsigned int pt;
-	unsigned int count = 0;
-	char delimiter;
-	unsigned int amr_octet_aligned;
-
-	memset(fmtp_param, 0, sizeof(*fmtp_param));
-
-	str = talloc_zero_size(ctx, strlen(sdp) + 1);
-	str_ptr = str;
-	strcpy(str_ptr, sdp);
-
-	/* Check if the input string begins with an fmtp token */
-	str_ptr = strstr(str_ptr, "fmtp:");
-	if (!str_ptr)
-		goto exit;
-	str_ptr += 5;
-
-	/* Extract payload type */
-	if (sscanf(str_ptr, "%u ", &pt) != 1)
-		goto error;
-	fmtp_param->payload_type = pt;
-
-	/* Advance pointer to the beginning of the parameter section and
-	 * tokenize string */
-	str_ptr = strstr(str_ptr, " ");
-	if (!str_ptr)
-		goto error;
-	str_ptr++;
-
-	param_str = strtok(str_ptr, " ");
-	if (!param_str)
-		goto exit;
-
-	while (1) {
-		/* Make sure that we don't get trapped in an endless loop */
-		if (count > 256)
-			goto error;
-
-		/* Chop off delimiters ';' at the end */
-		delimiter = str_ptr[strlen(str_ptr) - 1];
-		if (delimiter == ';' || delimiter == ',')
-			str_ptr[strlen(str_ptr) - 1] = '\0';
-
-		/* AMR octet aligned parameter */
-		if (sscanf(param_str, "octet-align=%d", &amr_octet_aligned) == 1) {
-			fmtp_param->param.amr_octet_aligned_present = true;
-			fmtp_param->param.amr_octet_aligned = false;
-			if (amr_octet_aligned == 1)
-				fmtp_param->param.amr_octet_aligned = true;
-
-		}
-
-		param_str = strtok(NULL, " ");
-		if (!param_str)
-			break;
-		count++;
-	}
-
-exit:
-	talloc_free(str);
-	return 0;
-error:
-	talloc_free(str);
-	return -EINVAL;
-}
-
-/* Pick optional fmtp parameters by payload type, if there are no fmtp
- * parameters, a nullpointer is returned */
-static struct mgcp_codec_param *param_by_pt(int pt, struct sdp_fmtp_param *fmtp_params, unsigned int fmtp_params_len)
-{
-	unsigned int i;
-
-	for (i = 0; i < fmtp_params_len; i++) {
-		if (fmtp_params[i].payload_type == pt)
-			return &fmtp_params[i].param;
-	}
-
-	return NULL;
-}
-
 /*! Analyze SDP input string.
 *  \param[in] endp trunk endpoint.
 *  \param[out] conn associated rtp connection.
@@ -282,9 +180,6 @@ int mgcp_parse_sdp_data(const struct mgcp_endpoint *endp,
 {
 	struct sdp_rtp_map codecs[MGCP_MAX_CODECS];
 	unsigned int codecs_used = 0;
-	struct sdp_fmtp_param fmtp_params[MGCP_MAX_CODECS];
-	unsigned int fmtp_used = 0;
-	struct mgcp_codec_param *codec_param;
 	char *line;
 	unsigned int i;
 	void *tmp_ctx = talloc_new(NULL);
@@ -312,31 +207,20 @@ 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, audio_name) == 2) {
-				codecs_update(tmp_ctx, codecs, codecs_used, payload, audio_name);
-				break;
-			}
-
-			if (sscanf(line, "a=ptime:%d-%d", &ptime, &ptime2) >= 1) {
+			if (sscanf(line, "a=rtpmap:%d %63s",
+				   &payload, audio_name) == 2) {
+				codecs_update(tmp_ctx, codecs,
+					      codecs_used, payload, audio_name);
+			} else
+			    if (sscanf
+				(line, "a=ptime:%d-%d", &ptime, &ptime2) >= 1) {
 				if (ptime2 > 0 && ptime2 != ptime)
 					rtp->packet_duration_ms = 0;
 				else
 					rtp->packet_duration_ms = ptime;
-				break;
-			}
-
-			if (sscanf(line, "a=maxptime:%d", &ptime2) == 1) {
+			} else if (sscanf(line, "a=maxptime:%d", &ptime2) == 1) {
 				rtp->maximum_packet_time = ptime2;
-				break;
 			}
-
-			if (strncmp("a=fmtp:", line, 6) == 0) {
-				rc = fmtp_from_sdp(conn->conn, &fmtp_params[fmtp_used], line);
-				if (rc >= 0)
-					fmtp_used++;
-				break;
-			}
-
 			break;
 		case 'm':
 			rc = sscanf(line, "m=audio %d RTP/AVP", &port);
@@ -378,15 +262,14 @@ int mgcp_parse_sdp_data(const struct mgcp_endpoint *endp,

 	/* Store parsed codec information */
 	for (i = 0; i < codecs_used; i++) {
-		codec_param = param_by_pt(codecs[i].payload_type, fmtp_params, fmtp_used);
-		rc = mgcp_codec_add(conn, codecs[i].payload_type, codecs[i].map_line, codec_param);
+		rc = mgcp_codec_add(conn, codecs[i].payload_type, codecs[i].map_line);
 		if (rc < 0)
 			LOGP(DLMGCP, LOGL_NOTICE, "endpoint:0x%x, failed to add codec\n", ENDPOINT_NUMBER(p->endp));
 	}

 	talloc_free(tmp_ctx);

-	LOGPCONN(conn->conn, DLMGCP, LOGL_NOTICE,
+	LOGP(DLMGCP, LOGL_NOTICE,
 	     "Got media info via SDP: port:%d, addr:%s, duration:%d, payload-types:",
 	     ntohs(rtp->rtp_port), inet_ntoa(rtp->addr),
 	     rtp->packet_duration_ms);
@@ -421,12 +304,15 @@ static int add_rtpmap(struct msgb *sdp, int payload_type, const char *audio_name
 	return 0;
 }

-/* Add audio strings to sdp payload */
+/* Add audio string to sdp payload */
 static int add_audio(struct msgb *sdp, int *payload_types, unsigned int payload_types_len, int local_port)
 {
 	int rc;
 	unsigned int i;

+	if (payload_types_len < 0)
+		return -EINVAL;
+
 	rc = msgb_printf(sdp, "m=audio %d RTP/AVP", local_port);
 	if (rc < 0)
 		return -EINVAL;
@@ -444,64 +330,6 @@ static int add_audio(struct msgb *sdp, int *payload_types, unsigned int payload_
 	return 0;
 }

-/* Add fmtp strings to sdp payload */
-static int add_fmtp(struct msgb *sdp, struct sdp_fmtp_param *fmtp_params, unsigned int fmtp_params_len,
-		    const char *fmtp_extra)
-{
-	unsigned int i;
-	int rc;
-	int fmtp_extra_pt = -1;
-	char *fmtp_extra_pars = "";
-
-	/* When no fmtp parameters ara available but an fmtp extra string
-	 * is configured, just add the fmtp extra string */
-	if (fmtp_params_len == 0 && fmtp_extra) {
-		return msgb_printf(sdp, "%s\r\n", fmtp_extra);
-	}
-
-	/* When there is fmtp extra configured we dissect it in order to drop
-	 * in the configured extra parameters at the right place when
-	 * generating the fmtp strings. */
-	if (fmtp_extra) {
-		if (sscanf(fmtp_extra, "a=fmtp:%d ", &fmtp_extra_pt) != 1)
-			fmtp_extra_pt = -1;
-
-		fmtp_extra_pars = strstr(fmtp_extra, " ");
-
-		if (!fmtp_extra_pars)
-			fmtp_extra_pars = "";
-		else
-			fmtp_extra_pars++;
-	}
-
-	for (i = 0; i < fmtp_params_len; i++) {
-		rc = msgb_printf(sdp, "a=fmtp:%u", fmtp_params[i].payload_type);
-
-		/* Add amr octet align parameter */
-		if (fmtp_params[i].param.amr_octet_aligned_present) {
-			if (fmtp_params[i].param.amr_octet_aligned)
-				rc = msgb_printf(sdp, " octet-align=1");
-			else
-				rc = msgb_printf(sdp, " octet-align=0");
-			if (rc < 0)
-				return -EINVAL;
-		}
-
-		/* Append extra parameters from fmtp extra */
-		if (fmtp_params[i].payload_type == fmtp_extra_pt) {
-			rc = msgb_printf(sdp, " %s", fmtp_extra_pars);
-			if (rc < 0)
-				return -EINVAL;
-		}
-
-		rc = msgb_printf(sdp, "\r\n", fmtp_params[i].payload_type);
-		if (rc < 0)
-			return -EINVAL;
-	}
-
-	return 0;
-}
-
 /*! Generate SDP response string.
 *  \param[in] endp trunk endpoint.
 *  \param[in] conn associated rtp connection.
@@ -512,16 +340,11 @@ int mgcp_write_response_sdp(const struct mgcp_endpoint *endp,
 			    const struct mgcp_conn_rtp *conn, struct msgb *sdp,
 			    const char *addr)
 {
-	const struct mgcp_rtp_codec *codec;
 	const char *fmtp_extra;
 	const char *audio_name;
 	int payload_type;
-	struct sdp_fmtp_param fmtp_param;
 	int rc;
 	int payload_types[1];
-	int local_port;
-	struct sdp_fmtp_param fmtp_params[1];
-        unsigned int fmtp_params_len = 0;

 	OSMO_ASSERT(endp);
 	OSMO_ASSERT(conn);
@@ -530,12 +353,10 @@ int mgcp_write_response_sdp(const struct mgcp_endpoint *endp,

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

-	audio_name = codec->audio_name;
-	payload_type = codec->payload_type;
-
 	rc = msgb_printf(sdp,
 			 "v=0\r\n"
 			 "o=- %s 23 IN IP4 %s\r\n"
@@ -549,11 +370,7 @@ int mgcp_write_response_sdp(const struct mgcp_endpoint *endp,
 	if (payload_type >= 0) {

 		payload_types[0] = payload_type;
-		if (mgcp_conn_rtp_is_osmux(conn))
-			local_port = endp->cfg->osmux_port;
-		else
-			local_port = conn->end.local_port;
-		rc = add_audio(sdp, payload_types, 1, local_port);
+		rc = add_audio(sdp, payload_types, 1, conn->end.local_port);
 		if (rc < 0)
 			goto buffer_too_small;

@@ -563,15 +380,12 @@ int mgcp_write_response_sdp(const struct mgcp_endpoint *endp,
 				goto buffer_too_small;
 		}

-		if (codec->param_present) {
-			fmtp_param.payload_type = payload_type;
-			fmtp_param.param = codec->param;
-			fmtp_params[0] = fmtp_param;
-			fmtp_params_len = 1;
+		if (fmtp_extra) {
+			rc = msgb_printf(sdp, "%s\r\n", fmtp_extra);
+
+			if (rc < 0)
+				goto buffer_too_small;
 		}
-		rc = add_fmtp(sdp, fmtp_params, fmtp_params_len, fmtp_extra);
-		if (rc < 0)
-			goto buffer_too_small;
 	}
 	if (conn->end.packet_duration_ms > 0 && endp->tcfg->audio_send_ptime) {
 		rc = msgb_printf(sdp, "a=ptime:%u\r\n",
@@ -583,6 +397,6 @@ int mgcp_write_response_sdp(const struct mgcp_endpoint *endp,
 	return 0;

 buffer_too_small:
-	LOGPCONN(conn->conn, DLMGCP, LOGL_ERROR, "SDP messagebuffer too small\n");
+	LOGP(DLMGCP, LOGL_ERROR, "SDP messagebuffer too small\n");
 	return -1;
 }
--- a/src/libosmo-mgcp/mgcp_vty.c
+++ b/src/libosmo-mgcp/mgcp_vty.c
@@ -37,8 +37,6 @@
 #define RTCP_OMIT_STR "Drop RTCP packets in both directions\n"
 #define RTP_PATCH_STR "Modify RTP packet header in both directions\n"
 #define RTP_KEEPALIVE_STR "Send dummy UDP packet to net RTP destination\n"
-#define RTP_TS101318_RFC5993_CONV_STR "Convert GSM-HR from TS101318 to RFC5993 and vice versa\n"
-

 static struct mgcp_config *g_cfg = NULL;

@@ -98,17 +96,13 @@ static int config_write_mgcp(struct vty *vty)
 	else
 		vty_out(vty, "  no rtcp-omit%s", VTY_NEWLINE);
 	if (g_cfg->trunk.force_constant_ssrc
-	    || g_cfg->trunk.force_aligned_timing
-	    || g_cfg->trunk.rfc5993_hr_convert) {
+	    || g_cfg->trunk.force_aligned_timing) {
 		vty_out(vty, "  %srtp-patch ssrc%s",
 			g_cfg->trunk.force_constant_ssrc ? "" : "no ",
 			VTY_NEWLINE);
 		vty_out(vty, "  %srtp-patch timestamp%s",
 			g_cfg->trunk.force_aligned_timing ? "" : "no ",
 			VTY_NEWLINE);
-		vty_out(vty, "  %srtp-patch rfc5993hr%s",
-			g_cfg->trunk.rfc5993_hr_convert ? "" : "no ",
-			VTY_NEWLINE);
 	} else
 		vty_out(vty, "  no rtp-patch%s", VTY_NEWLINE);
 	if (g_cfg->trunk.audio_payload != -1)
@@ -225,13 +219,6 @@ static void dump_endpoint(struct vty *vty, struct mgcp_endpoint *endp, int epidx
 		vty_out(vty, "   CONN: %s%s", mgcp_conn_dump(conn), VTY_NEWLINE);

 		if (show_stats) {
-			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",
-					(int)remaining.tv_sec, (int)remaining.tv_usec, VTY_NEWLINE);
-			}
-
 			/* FIXME: Also add verbosity for other
 			 * connection types (E1) as soon as
 			 * the implementation is available */
@@ -297,7 +284,7 @@ DEFUN(show_mcgp, show_mgcp_cmd,
 	    dump_trunk(vty, trunk, show_stats);

 	if (g_cfg->osmux)
-		vty_out(vty, "Osmux used CID: %d%s", osmux_cid_pool_count_used(),
+		vty_out(vty, "Osmux used CID: %d%s", osmux_used_cid(),
 			VTY_NEWLINE);

 	return CMD_SUCCESS;
@@ -728,28 +715,11 @@ DEFUN(cfg_mgcp_no_patch_rtp_ts,
 	return CMD_SUCCESS;
 }

-DEFUN(cfg_mgcp_patch_rtp_rfc5993hr,
-      cfg_mgcp_patch_rtp_rfc5993hr_cmd,
-      "rtp-patch rfc5993hr", RTP_PATCH_STR RTP_TS101318_RFC5993_CONV_STR)
-{
-	g_cfg->trunk.rfc5993_hr_convert = true;
-	return CMD_SUCCESS;
-}
-
-DEFUN(cfg_mgcp_no_patch_rtp_rfc5993hr,
-      cfg_mgcp_no_patch_rtp_rfc5993hr_cmd,
-      "no rtp-patch rfc5993hr", NO_STR RTP_PATCH_STR RTP_TS101318_RFC5993_CONV_STR)
-{
-	g_cfg->trunk.rfc5993_hr_convert = false;
-	return CMD_SUCCESS;
-}
-
 DEFUN(cfg_mgcp_no_patch_rtp,
      cfg_mgcp_no_patch_rtp_cmd, "no rtp-patch", NO_STR RTP_PATCH_STR)
 {
 	g_cfg->trunk.force_constant_ssrc = 0;
 	g_cfg->trunk.force_aligned_timing = 0;
-	g_cfg->trunk.rfc5993_hr_convert = false;
 	return CMD_SUCCESS;
 }

@@ -846,17 +816,13 @@ static int config_write_trunk(struct vty *vty)
 			vty_out(vty, "  rtcp-omit%s", VTY_NEWLINE);
 		else
 			vty_out(vty, "  no rtcp-omit%s", VTY_NEWLINE);
-		if (trunk->force_constant_ssrc || trunk->force_aligned_timing
-		    || g_cfg->trunk.rfc5993_hr_convert) {
+		if (trunk->force_constant_ssrc || trunk->force_aligned_timing) {
 			vty_out(vty, "  %srtp-patch ssrc%s",
 				trunk->force_constant_ssrc ? "" : "no ",
 				VTY_NEWLINE);
 			vty_out(vty, "  %srtp-patch timestamp%s",
 				trunk->force_aligned_timing ? "" : "no ",
 				VTY_NEWLINE);
-			vty_out(vty, "  %srtp-patch rfc5993hr%s",
-				trunk->rfc5993_hr_convert ? "" : "no ",
-				VTY_NEWLINE);
 		} else
 			vty_out(vty, "  no rtp-patch%s", VTY_NEWLINE);
 		if (trunk->audio_fmtp_extra)
@@ -1022,31 +988,12 @@ DEFUN(cfg_trunk_no_patch_rtp_ts,
 	return CMD_SUCCESS;
 }

-DEFUN(cfg_trunk_patch_rtp_rfc5993hr,
-      cfg_trunk_patch_rtp_rfc5993hr_cmd,
-      "rtp-patch rfc5993hr", RTP_PATCH_STR RTP_TS101318_RFC5993_CONV_STR)
-{
-	struct mgcp_trunk_config *trunk = vty->index;
-	trunk->rfc5993_hr_convert = true;
-	return CMD_SUCCESS;
-}
-
-DEFUN(cfg_trunk_no_patch_rtp_rfc5993hr,
-      cfg_trunk_no_patch_rtp_rfc5993hr_cmd,
-      "no rtp-patch rfc5993hr", NO_STR RTP_PATCH_STR RTP_TS101318_RFC5993_CONV_STR)
-{
-	struct mgcp_trunk_config *trunk = vty->index;
-	trunk->rfc5993_hr_convert = false;
-	return CMD_SUCCESS;
-}
-
 DEFUN(cfg_trunk_no_patch_rtp,
      cfg_trunk_no_patch_rtp_cmd, "no rtp-patch", NO_STR RTP_PATCH_STR)
 {
 	struct mgcp_trunk_config *trunk = vty->index;
 	trunk->force_constant_ssrc = 0;
 	trunk->force_aligned_timing = 0;
-	trunk->rfc5993_hr_convert = false;
 	return CMD_SUCCESS;
 }

@@ -1305,7 +1252,14 @@ DEFUN(cfg_mgcp_osmux,
 	if (strcmp(argv[0], "off") == 0) {
 		g_cfg->osmux = OSMUX_USAGE_OFF;
 		return CMD_SUCCESS;
-	} else if (strcmp(argv[0], "on") == 0)
+	}
+
+	/* Since OSMUX support is not finished, we do not
+	 * allow to turn it on yet. */
+	vty_out(vty, "OSMUX currently unavailable in this software version.%s", VTY_NEWLINE);
+	return CMD_WARNING;
+#if 0
+	if (strcmp(argv[0], "on") == 0)
 		g_cfg->osmux = OSMUX_USAGE_ON;
 	else if (strcmp(argv[0], "only") == 0)
 		g_cfg->osmux = OSMUX_USAGE_ONLY;
@@ -1316,7 +1270,7 @@ DEFUN(cfg_mgcp_osmux,
 	}

 	return CMD_SUCCESS;
-
+#endif
 }

 DEFUN(cfg_mgcp_osmux_ip,
@@ -1379,14 +1333,13 @@ DEFUN(cfg_mgcp_domain,

 DEFUN(cfg_mgcp_conn_timeout,
      cfg_mgcp_conn_timeout_cmd,
-      "conn-timeout <0-65534>",
-      "Set a time after which inactive connections (CIs) are closed. Set to 0 to disable timeout. This can be used to"
-      " work around interoperability problems causing connections to stay open forever, and slowly exhausting all"
-      " available ports. Enable keep-alive packets in MGW clients when using this option together with LCLS (OsmoBSC,"
-      " OsmoMSC: 'rtp keep-alive')!\n"
+      "conn-timeout <1-65534>",
+      "Set a time after which inactive connections (CIs) are closed. This can be used to work around interoperability"
+      " problems causing connections to stay open forever, and slowly exhausting all available ports. Do not enable"
+      " when LCLS is used (connections in LCLS state appear to be inactive)!\n"
      "Timeout value (sec.)\n")
 {
-	g_cfg->conn_timeout = strtoul(argv[0], NULL, 10);
+	g_cfg->conn_timeout = strtoul(argv[0], NULL, 16);
 	return CMD_SUCCESS;
 }

@@ -1440,8 +1393,6 @@ int mgcp_vty_init(void)
 	install_element(MGCP_NODE, &cfg_mgcp_patch_rtp_ts_cmd);
 	install_element(MGCP_NODE, &cfg_mgcp_no_patch_rtp_ts_cmd);
 	install_element(MGCP_NODE, &cfg_mgcp_no_patch_rtp_cmd);
-	install_element(MGCP_NODE, &cfg_mgcp_patch_rtp_rfc5993hr_cmd);
-	install_element(MGCP_NODE, &cfg_mgcp_no_patch_rtp_rfc5993hr_cmd);
 	install_element(MGCP_NODE, &cfg_mgcp_sdp_fmtp_extra_cmd);
 	install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_send_ptime_cmd);
 	install_element(MGCP_NODE, &cfg_mgcp_no_sdp_payload_send_ptime_cmd);
@@ -1473,8 +1424,6 @@ int mgcp_vty_init(void)
 	install_element(TRUNK_NODE, &cfg_trunk_patch_rtp_ssrc_cmd);
 	install_element(TRUNK_NODE, &cfg_trunk_no_patch_rtp_ssrc_cmd);
 	install_element(TRUNK_NODE, &cfg_trunk_patch_rtp_ts_cmd);
-	install_element(TRUNK_NODE, &cfg_trunk_patch_rtp_rfc5993hr_cmd);
-	install_element(TRUNK_NODE, &cfg_trunk_no_patch_rtp_rfc5993hr_cmd);
 	install_element(TRUNK_NODE, &cfg_trunk_no_patch_rtp_ts_cmd);
 	install_element(TRUNK_NODE, &cfg_trunk_no_patch_rtp_cmd);
 	install_element(TRUNK_NODE, &cfg_trunk_sdp_fmtp_extra_cmd);
--- a/src/osmo-mgw/mgw_main.c
+++ b/src/osmo-mgw/mgw_main.c
@@ -132,10 +132,6 @@ static void handle_options(int argc, char **argv)
 			break;
 		};
 	}
-	if (argc > optind) {
-		fprintf(stderr, "Unsupported positional arguments on command line\n");
-		exit(2);
-	}
 }

 /* Callback function to be called when the RSIP ("Reset in Progress") mgcp
@@ -274,9 +270,9 @@ int main(int argc, char **argv)

 	vty_info.copyright = osmomgw_copyright;
 	vty_init(&vty_info);
-	logging_vty_add_cmds();
+	logging_vty_add_cmds(NULL);
 	osmo_talloc_vty_add_cmds();
-	osmo_stats_vty_add_cmds();
+	osmo_stats_vty_add_cmds(&log_info);
 	mgcp_vty_init();

 	handle_options(argc, argv);
--- a/tests/mgcp/mgcp_test.c
+++ b/tests/mgcp/mgcp_test.c
@@ -165,7 +165,7 @@ static void test_strline(void)

 #define MDCX4_PT1 \
 	"MDCX 18983217 1@mgw MGCP 1.0\r\n" \
-	"M: SENDRECV\r" \
+	"M: sendrecv\r" \
 	"C: 2\r\n" \
 	"I: %s\r\n" \
 	"L: p:20-40, a:AMR, nt:IN\r\n" \
@@ -208,24 +208,8 @@ static void test_strline(void)
 	"a=rtpmap:99 AMR/8000\r\n" \
 	"a=ptime:40\r\n"

-/* Test different upper/lower case in options */
-#define MDCX4_PT4 \
-	"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 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 18983221 1@mgw MGCP 1.0\r\n" \
+	"MDCX 18983220 1@mgw MGCP 1.0\r\n" \
 	"M: sendonly\r" \
 	"C: 2\r\n" \
 	"I: %s\r\n" \
@@ -240,17 +224,17 @@ static void test_strline(void)
 	"a=ptime:40\r\n"

 #define MDCX4_RO \
-	"MDCX 18983222 1@mgw MGCP 1.0\r\n" \
+	"MDCX 18983221 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 18983223 1@mgw MGCP 1.0\r\n" \
+	"MDCX 18983222 1@mgw MGCP 1.0\r\n" \
 	"I: 123456789012345678901234567890123\n"

-#define MDCX_TOO_LONG_CI_RET "510 18983223 FAIL\r\n"
+#define MDCX_TOO_LONG_CI_RET "510 18983222 FAIL\r\n"

 #define SHORT2	"CRCX 1"
 #define SHORT2_RET "510 000000 FAIL\r\n"
@@ -260,7 +244,7 @@ static void test_strline(void)

 #define CRCX \
 	"CRCX 2 1@mgw MGCP 1.0\r\n" \
-	"m: recvonly\r\n" \
+	"M: recvonly\r\n" \
 	"C: 2\r\n" \
 	"L: p:20\r\n" \
 	"\r\n" \
@@ -483,34 +467,6 @@ static void test_strline(void)
 	"M: recvonly\r\n" \
 	"C: 2\r\n"

-#define CRCX_AMR_WITH_FMTP \
-	"CRCX 2 7@mgw MGCP 1.0\r\n" \
-	"M: recvonly\r\n" \
-	"C: 2\r\n" \
-	"X\r\n" \
-	"L: p:20\r\n" \
-	"\r\n" \
-	"v=0\r\n" \
-	"c=IN IP4 123.12.12.123\r\n" \
-	"m=audio 5904 RTP/AVP 111\r\n" \
-	"a=rtpmap:111 AMR/8000/1\r\n" \
-	"a=ptime:20\r\n" \
-	"a=fmtp:111 mode-change-capability=2; octet-align=1\r\n" \
-
-#define CRCX_AMR_WITH_FMTP_RET \
-	"200 2 OK\r\n" \
-	"I: %s\r\n" \
-	"\r\n" \
-	"v=0\r\n" \
-	"o=- %s 23 IN IP4 0.0.0.0\r\n" \
-	"s=-\r\n" \
-	"c=IN IP4 0.0.0.0\r\n" \
-	"t=0 0\r\n" \
-	"m=audio 16012 RTP/AVP 111\r\n" \
-	"a=rtpmap:111 AMR/8000/1\r\n" \
-	"a=fmtp:111 octet-align=1\r\n" \
-	"a=ptime:20\r\n"
-
 #define CRCX_NO_LCO_NO_SDP_RET \
 	"200 2 OK\r\n" \
 	"I: %s\r\n" \
@@ -542,9 +498,8 @@ static const struct mgcp_test tests[] = {
 	{"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},
+	{"MDCX4_SO", MDCX4_SO, MDCX4_RET("18983220"), 99},
+	{"MDCX4_RO", MDCX4_RO, MDCX4_RO_RET("18983221"), PTYPE_IGNORE},
 	{"DLCX", DLCX, DLCX_RET, PTYPE_IGNORE},
 	{"CRCX_ZYN", CRCX_ZYN, CRCX_ZYN_RET, 97},
 	{"EMPTY", EMPTY, EMPTY_RET},
@@ -562,7 +517,6 @@ static const struct mgcp_test tests[] = {
 	{"CRCX", CRCX_NO_LCO_NO_SDP, CRCX_NO_LCO_NO_SDP_RET, 97},
 	{"CRCX", CRCX_X_OSMO_IGN, CRCX_X_OSMO_IGN_RET, 97},
 	{"MDCX_TOO_LONG_CI", MDCX_TOO_LONG_CI, MDCX_TOO_LONG_CI_RET},
-	{"CRCX", CRCX_AMR_WITH_FMTP, CRCX_AMR_WITH_FMTP_RET},
 };

 static const struct mgcp_test retransmit[] = {
@@ -641,13 +595,6 @@ int clock_gettime(clockid_t clk_id, struct timespec *tp)
 	return real_clock_gettime(clk_id, tp);
 }

-static void mgcp_endpoints_release(struct mgcp_trunk_config *trunk)
-{
-	int i;
-	for (i = 1; i < trunk->number_endpoints; i++)
-		mgcp_endp_release(&trunk->endpoints[i]);
-}
-
 #define CONN_UNMODIFIED (0x1000)

 static void test_values(void)
@@ -749,7 +696,6 @@ static void test_messages(void)
 {
 	struct mgcp_config *cfg;
 	struct mgcp_endpoint *endp;
-	struct mgcp_trunk_config *trunk2;
 	int i;
 	struct mgcp_conn_rtp *conn = NULL;
 	char last_conn_id[256];
@@ -763,8 +709,7 @@ static void test_messages(void)

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

-	trunk2 = mgcp_trunk_alloc(cfg, 1);
-	mgcp_endpoints_allocate(trunk2);
+	mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));

 	for (i = 0; i < ARRAY_SIZE(tests); i++) {
 		const struct mgcp_test *t = &tests[i];
@@ -882,15 +827,12 @@ static void test_messages(void)
 		}
 	}

-	mgcp_endpoints_release(trunk2);
-	mgcp_endpoints_release(&cfg->trunk);
 	talloc_free(cfg);
 }

 static void test_retransmission(void)
 {
 	struct mgcp_config *cfg;
-	struct mgcp_trunk_config *trunk2;
 	int i;
 	char last_conn_id[256];
 	int rc;
@@ -902,8 +844,7 @@ static void test_retransmission(void)

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

-	trunk2 = mgcp_trunk_alloc(cfg, 1);
-	mgcp_endpoints_allocate(trunk2);
+	mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));

 	for (i = 0; i < ARRAY_SIZE(retransmit); i++) {
 		const struct mgcp_test *t = &retransmit[i];
@@ -943,8 +884,6 @@ static void test_retransmission(void)
 		msgb_free(msg);
 	}

-	mgcp_endpoints_release(trunk2);
-	mgcp_endpoints_release(&cfg->trunk);
 	talloc_free(cfg);
 }

@@ -958,7 +897,6 @@ static int rqnt_cb(struct mgcp_endpoint *endp, char _tone)
 static void test_rqnt_cb(void)
 {
 	struct mgcp_config *cfg;
-	struct mgcp_trunk_config *trunk2;
 	struct msgb *inp, *msg;
 	char conn_id[256];

@@ -968,8 +906,7 @@ static void test_rqnt_cb(void)
 	cfg->trunk.vty_number_endpoints = 64;
 	mgcp_endpoints_allocate(&cfg->trunk);

-	trunk2 = mgcp_trunk_alloc(cfg, 1);
-	mgcp_endpoints_allocate(trunk2);
+	mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));

 	inp = create_msg(CRCX, NULL);
 	msg = mgcp_handle_message(cfg, inp);
@@ -998,8 +935,6 @@ static void test_rqnt_cb(void)
 	inp = create_msg(DLCX, conn_id);
 	msgb_free(mgcp_handle_message(cfg, inp));
 	msgb_free(inp);
-	mgcp_endpoints_release(trunk2);
-	mgcp_endpoints_release(&cfg->trunk);
 	talloc_free(cfg);
 }

@@ -1311,7 +1246,7 @@ static void test_packet_error_detection(int patch_ssrc, int patch_ts)

 	rtp = &conn->end;

-	OSMO_ASSERT(mgcp_codec_add(conn, PTYPE_UNDEFINED, "AMR/8000/1", NULL) == 0);
+	OSMO_ASSERT(mgcp_codec_add(conn, PTYPE_UNDEFINED, "AMR/8000/1") == 0);
 	rtp->codec = &rtp->codecs[0];

 	for (i = 0; i < ARRAY_SIZE(test_rtp_packets1); ++i) {
@@ -1361,12 +1296,12 @@ static void test_packet_error_detection(int patch_ssrc, int patch_ts)
 static void test_multilple_codec(void)
 {
 	struct mgcp_config *cfg;
-	struct mgcp_trunk_config *trunk2;
 	struct mgcp_endpoint *endp;
 	struct msgb *inp, *resp;
 	struct in_addr addr;
 	struct mgcp_conn_rtp *conn = NULL;
 	char conn_id[256];
+	int i;

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

@@ -1374,9 +1309,7 @@ static void test_multilple_codec(void)
 	cfg->trunk.vty_number_endpoints = 64;
 	mgcp_endpoints_allocate(&cfg->trunk);
 	cfg->policy_cb = mgcp_test_policy_cb;
-
-	trunk2 = mgcp_trunk_alloc(cfg, 1);
-	mgcp_endpoints_allocate(trunk2);
+	mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));

 	/* Allocate endpoint 1@mgw with two codecs */
 	last_endpoint = -1;
@@ -1502,8 +1435,9 @@ static void test_multilple_codec(void)
 	OSMO_ASSERT(conn);
 	OSMO_ASSERT(conn->end.codec->payload_type == 0);

-	mgcp_endpoints_release(trunk2);
-	mgcp_endpoints_release(&cfg->trunk);
+	for (i = 1; i < cfg->trunk.number_endpoints; i++)
+		mgcp_endp_release(&cfg->trunk.endpoints[i]);
+
 	talloc_free(cfg);
 }

@@ -1552,13 +1486,12 @@ static void test_no_cycle(void)
 	OSMO_ASSERT(conn->state.stats.cycles == UINT16_MAX + 1);
 	OSMO_ASSERT(conn->state.stats.max_seq == 0);

-	mgcp_endpoints_release(&cfg->trunk);
+	mgcp_endp_release(endp);
 	talloc_free(cfg);
 }

 static void test_no_name(void)
 {
-	struct mgcp_trunk_config *trunk2;
 	struct mgcp_config *cfg;
 	struct msgb *inp, *msg;

@@ -1571,8 +1504,7 @@ static void test_no_name(void)

 	cfg->policy_cb = mgcp_test_policy_cb;

-	trunk2 = mgcp_trunk_alloc(cfg, 1);
-	mgcp_endpoints_allocate(trunk2);
+	mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));

 	inp = create_msg(CRCX, NULL);
 	msg = mgcp_handle_message(cfg, inp);
@@ -1585,8 +1517,7 @@ static void test_no_name(void)
 	msgb_free(inp);
 	msgb_free(msg);

-	mgcp_endpoints_release(trunk2);
-	mgcp_endpoints_release(&cfg->trunk);
+	mgcp_endp_release(&cfg->trunk.endpoints[1]);
 	talloc_free(cfg);
 }

@@ -1594,34 +1525,25 @@ static void test_osmux_cid(void)
 {
 	int id, i;

-	OSMO_ASSERT(osmux_cid_pool_count_used() == 0);
-
-	id = osmux_cid_pool_get_next();
+	OSMO_ASSERT(osmux_used_cid() == 0);
+	id = osmux_get_cid();
 	OSMO_ASSERT(id == 0);
-	OSMO_ASSERT(osmux_cid_pool_count_used() == 1);
-
-	osmux_cid_pool_get(30);
-	OSMO_ASSERT(osmux_cid_pool_count_used() == 2);
-        osmux_cid_pool_get(30);
-	OSMO_ASSERT(osmux_cid_pool_count_used() == 2);
-
-	osmux_cid_pool_put(id);
-	OSMO_ASSERT(osmux_cid_pool_count_used() == 1);
-	osmux_cid_pool_put(30);
-	OSMO_ASSERT(osmux_cid_pool_count_used() == 0);
+	OSMO_ASSERT(osmux_used_cid() == 1);
+	osmux_put_cid(id);
+	OSMO_ASSERT(osmux_used_cid() == 0);

 	for (i = 0; i < 256; ++i) {
-		id = osmux_cid_pool_get_next();
+		id = osmux_get_cid();
 		OSMO_ASSERT(id == i);
-		OSMO_ASSERT(osmux_cid_pool_count_used() == i + 1);
+		OSMO_ASSERT(osmux_used_cid() == i + 1);
 	}

-	id = osmux_cid_pool_get_next();
+	id = osmux_get_cid();
 	OSMO_ASSERT(id == -1);

 	for (i = 0; i < 256; ++i)
-		osmux_cid_pool_put(i);
-	OSMO_ASSERT(osmux_cid_pool_count_used() == 0);
+		osmux_put_cid(i);
+	OSMO_ASSERT(osmux_used_cid() == 0);
 }

 static const struct log_info_cat log_categories[] = {
@@ -1734,335 +1656,98 @@ static void test_check_local_cx_options(void *ctx)
 	OSMO_ASSERT(check_local_cx_options(ctx, ",,,") == -1);
 }

-static const struct mgcp_codec_param amr_param_octet_aligned_true = {
-	.amr_octet_aligned_present = true,
-	.amr_octet_aligned = true,
-};
-
-static const struct mgcp_codec_param amr_param_octet_aligned_false = {
-	.amr_octet_aligned_present = true,
-	.amr_octet_aligned = false,
-};
-
-static const struct mgcp_codec_param amr_param_octet_aligned_unset = {
-	.amr_octet_aligned_present = false,
-};
-
-struct testcase_mgcp_codec_pt_translate_codec {
-	int payload_type;
-	const char *audio_name;
-	const struct mgcp_codec_param *param;
-	int expect_rc;
-};
-
-struct testcase_mgcp_codec_pt_translate_expect {
-	bool end;
-	int payload_type_map[2];
-};
-
-struct testcase_mgcp_codec_pt_translate {
-	const char *descr;
-	/* two conns on an endpoint, each with N configured codecs */
-	struct testcase_mgcp_codec_pt_translate_codec codecs[2][10];
-	struct testcase_mgcp_codec_pt_translate_expect expect[32];
-};
-
-static const struct testcase_mgcp_codec_pt_translate test_mgcp_codec_pt_translate_cases[] = {
-	{
-		.descr = "same order, but differing payload type numbers",
-		.codecs = {
-			{
-				{ 112, "AMR/8000/1", &amr_param_octet_aligned_true, },
-				{ 0, "PCMU/8000/1", NULL, },
-				{ 111, "GSM-HR-08/8000/1", NULL, },
-			},
-			{
-				{ 96, "AMR/8000/1", &amr_param_octet_aligned_true, },
-				{ 0, "PCMU/8000/1", NULL, },
-				{ 97, "GSM-HR-08/8000/1", NULL, },
-			},
-		},
-		.expect = {
-			{ .payload_type_map = {112, 96}, },
-			{ .payload_type_map = {0, 0}, },
-			{ .payload_type_map = {111, 97} },
-			{ .payload_type_map = {123, -EINVAL} },
-			{ .end = true },
-		},
-	},
-	{
-		.descr = "different order and different payload type numbers",
-		.codecs = {
-			{
-				{ 0, "PCMU/8000/1", NULL, },
-				{ 111, "GSM-HR-08/8000/1", NULL, },
-				{ 112, "AMR/8000/1", &amr_param_octet_aligned_true, },
-			},
-			{
-				{ 97, "GSM-HR-08/8000/1", NULL, },
-				{ 0, "PCMU/8000/1", NULL, },
-				{ 96, "AMR/8000/1", &amr_param_octet_aligned_true, },
-			},
-		},
-		.expect = {
-			{ .payload_type_map = {112, 96}, },
-			{ .payload_type_map = {0, 0}, },
-			{ .payload_type_map = {111, 97} },
-			{ .payload_type_map = {123, -EINVAL} },
-			{ .end = true },
-		},
-	},
-	{
-		.descr = "both sides have the same payload_type numbers assigned to differing codecs",
-		.codecs = {
-			{
-				{ 0, "PCMU/8000/1", NULL, },
-				{ 96, "GSM-HR-08/8000/1", NULL, },
-				{ 97, "AMR/8000/1", &amr_param_octet_aligned_true, },
-			},
-			{
-				{ 97, "GSM-HR-08/8000/1", NULL, },
-				{ 0, "PCMU/8000/1", NULL, },
-				{ 96, "AMR/8000/1", &amr_param_octet_aligned_true, },
-			},
-		},
-		.expect = {
-			{ .payload_type_map = {96, 97}, },
-			{ .payload_type_map = {97, 96}, },
-			{ .payload_type_map = {0, 0}, },
-			{ .end = true },
-		},
-	},
-	{
-		.descr = "conn0 has no codecs",
-		.codecs = {
-			{
-				/* no codecs */
-			},
-			{
-				{ 96, "AMR/8000/1", &amr_param_octet_aligned_true, },
-				{ 0, "PCMU/8000/1", NULL, },
-				{ 97, "GSM-HR-08/8000/1", NULL, },
-			},
-		},
-		.expect = {
-			{ .payload_type_map = {112, -EINVAL}, },
-			{ .payload_type_map = {0, -EINVAL}, },
-			{ .payload_type_map = {111, -EINVAL} },
-			{ .end = true },
-		},
-	},
-	{
-		.descr = "conn1 has no codecs",
-		.codecs = {
-			{
-				{ 112, "AMR/8000/1", &amr_param_octet_aligned_true, },
-				{ 0, "PCMU/8000/1", NULL, },
-				{ 111, "GSM-HR-08/8000/1", NULL, },
-			},
-			{
-				/* no codecs */
-			},
-		},
-		.expect = {
-			{ .payload_type_map = {112, -EINVAL}, },
-			{ .payload_type_map = {0, -EINVAL}, },
-			{ .payload_type_map = {111, -EINVAL} },
-			{ .end = true },
-		},
-	},
-	{
-		.descr = "test AMR with differing octet-aligned settings",
-		.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, 121}, },
-			{ .payload_type_map = {112, 122} },
-			{ .end = true },
-		},
-	},
-	{
-		.descr = "test AMR with missing octet-aligned settings (defaults to 0)",
-		.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, -EINVAL}, },
-			{ .payload_type_map = {112, 122} },
-			{ .end = true },
-		},
-	},
-	{
-		.descr = "test AMR with NULL param (defaults to 0)",
-		.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, -EINVAL}, },
-			{ .payload_type_map = {112, 122} },
-			{ .end = true },
-		},
-	},
-	{
-		.descr = "match FOO/8000/1 and FOO/8000 as identical, single channel is implicit",
-		.codecs = {
-			{
-				{ 0, "PCMU/8000/1", NULL, },
-				{ 111, "GSM-HR-08/8000/1", NULL, },
-				{ 112, "AMR/8000/1", &amr_param_octet_aligned_true, },
-			},
-			{
-				{ 97, "GSM-HR-08/8000", NULL, },
-				{ 0, "PCMU/8000", NULL, },
-				{ 96, "AMR/8000", &amr_param_octet_aligned_true, },
-			},
-		},
-		.expect = {
-			{ .payload_type_map = {112, 96}, },
-			{ .payload_type_map = {0, 0}, },
-			{ .payload_type_map = {111, 97} },
-			{ .payload_type_map = {123, -EINVAL} },
-			{ .end = true },
-		},
-	},
-	{
-		.descr = "match FOO/8000/1 and FOO as identical, 8k and single channel are implicit",
-		.codecs = {
-			{
-				{ 0, "PCMU/8000/1", NULL, },
-				{ 111, "GSM-HR-08/8000/1", NULL, },
-				{ 112, "AMR/8000/1", &amr_param_octet_aligned_true, },
-			},
-			{
-				{ 97, "GSM-HR-08", NULL, },
-				{ 0, "PCMU", NULL, },
-				{ 96, "AMR", &amr_param_octet_aligned_true, },
-			},
-		},
-		.expect = {
-			{ .payload_type_map = {112, 96}, },
-			{ .payload_type_map = {0, 0}, },
-			{ .payload_type_map = {111, 97} },
-			{ .payload_type_map = {123, -EINVAL} },
-			{ .end = true },
-		},
-	},
-	{
-		.descr = "test whether channel number matching is waterproof",
-		.codecs = {
-			{
-				{ 111, "GSM-HR-08/8000", },
-				{ 112, "GSM-HR-08/8000/2", .expect_rc = -22},
-				{ 113, "GSM-HR-08/8000/3", .expect_rc = -22},
-			},
-			{
-				{ 122, "GSM-HR-08/8000/2", .expect_rc = -22},
-				{ 121, "GSM-HR-08/8000/1", },
-			},
-		},
-		.expect = {
-			{ .payload_type_map = {111, 121}, },
-			{ .payload_type_map = {112, -EINVAL} },
-			{ .payload_type_map = {113, -EINVAL} },
-			{ .end = true },
-		},
-	},
-};
+static void test_mgcp_codec_pt_translate_pars(struct mgcp_rtp_codec *c)
+{
+	c->rate = 8000;
+	c->channels = 1;
+	c->frame_duration_num = 23;
+	c->frame_duration_den = 42;
+}

 static void test_mgcp_codec_pt_translate(void)
 {
-	int i;
-	bool ok = true;
-	printf("\nTesting mgcp_codec_pt_translate()\n");
+	struct mgcp_conn_rtp conn_src;
+	struct mgcp_conn_rtp conn_dst;
+	int pt_dst;

-	for (i = 0; i < ARRAY_SIZE(test_mgcp_codec_pt_translate_cases); i++) {
-		const struct testcase_mgcp_codec_pt_translate *t = &test_mgcp_codec_pt_translate_cases[i];
-		struct mgcp_conn_rtp conn[2] = {};
-		int rc;
-		int conn_i;
-		int c;
+	/* Setup a realistic set of codec configurations on both
+	 * ends. AMR and HR will use different payload types. PCMU
+	 * must use 0 on both ends since this is not a dynamic payload
+	 * type */
+	test_mgcp_codec_pt_translate_pars(&conn_src.end.codecs[0]);
+	test_mgcp_codec_pt_translate_pars(&conn_dst.end.codecs[0]);
+	test_mgcp_codec_pt_translate_pars(&conn_src.end.codecs[1]);
+	test_mgcp_codec_pt_translate_pars(&conn_dst.end.codecs[1]);
+	test_mgcp_codec_pt_translate_pars(&conn_src.end.codecs[2]);
+	test_mgcp_codec_pt_translate_pars(&conn_dst.end.codecs[2]);
+	conn_src.end.codecs[0].payload_type = 112;
+	conn_dst.end.codecs[0].payload_type = 96;
+	conn_src.end.codecs[1].payload_type = 0;
+	conn_dst.end.codecs[1].payload_type = 0;
+	conn_src.end.codecs[2].payload_type = 111;
+	conn_dst.end.codecs[2].payload_type = 97;
+	conn_src.end.codecs[0].audio_name = "AMR/8000/1";
+	conn_dst.end.codecs[0].audio_name = "AMR/8000/1";
+	conn_src.end.codecs[1].audio_name = "PCMU/8000/1";
+	conn_dst.end.codecs[1].audio_name = "PCMU/8000/1";
+	conn_src.end.codecs[2].audio_name = "GSM-HR-08/8000/1";
+	conn_dst.end.codecs[2].audio_name = "GSM-HR-08/8000/1";
+	conn_src.end.codecs[0].subtype_name = "AMR";
+	conn_dst.end.codecs[0].subtype_name = "AMR";
+	conn_src.end.codecs[1].subtype_name = "PCMU";
+	conn_dst.end.codecs[1].subtype_name = "PCMU";
+	conn_src.end.codecs[2].subtype_name = "GSM-HR-08";
+	conn_dst.end.codecs[2].subtype_name = "GSM-HR-08";
+	conn_src.end.codecs_assigned = 3;
+	conn_dst.end.codecs_assigned = 3;

-		printf("#%d: %s\n", i, t->descr);
+	/* We expect the function to find the PT we must use when we send the
+	 * packet out to the destination. All we know is the context for both
+	 * connections and the payload type from the source packet */
+	pt_dst =
+	    mgcp_codec_pt_translate(&conn_src, &conn_dst,
+				    conn_src.end.codecs[0].payload_type);
+	OSMO_ASSERT(pt_dst == conn_dst.end.codecs[0].payload_type);
+	pt_dst =
+	    mgcp_codec_pt_translate(&conn_src, &conn_dst,
+				    conn_src.end.codecs[1].payload_type);
+	OSMO_ASSERT(pt_dst == conn_dst.end.codecs[1].payload_type);
+	pt_dst =
+	    mgcp_codec_pt_translate(&conn_src, &conn_dst,
+				    conn_src.end.codecs[2].payload_type);
+	OSMO_ASSERT(pt_dst == conn_dst.end.codecs[2].payload_type);

-		for (conn_i = 0; conn_i < 2; conn_i++) {
-			printf(" - add codecs on conn%d:\n", conn_i);
-			for (c = 0; c < ARRAY_SIZE(t->codecs[conn_i]); c++) {
-				const struct testcase_mgcp_codec_pt_translate_codec *codec = &t->codecs[conn_i][c];
-				if (!codec->audio_name)
-					break;
-
-				rc = mgcp_codec_add(&conn[conn_i], codec->payload_type, codec->audio_name, codec->param);
-
-				printf("   %2d: %3d %s%s  -> rc=%d\n", c, codec->payload_type, codec->audio_name,
-				       codec->param ?
-					       (codec->param->amr_octet_aligned_present?
-							(codec->param->amr_octet_aligned ?
-								" octet-aligned=1" : " octet-aligned=0")
-							: " octet-aligned=unset")
-						: "",
-						rc);
-				if (rc != codec->expect_rc) {
-					printf("     ERROR: expected rc=%d\n", codec->expect_rc);
-					ok = false;
-				}
-			}
-			if (!c)
-				printf("    (none)\n");
-		}
-
-		for (c = 0; c < ARRAY_SIZE(t->expect); c++) {
-			const struct testcase_mgcp_codec_pt_translate_expect *expect = &t->expect[c];
-			int result;
-
-			if (expect->end)
-				break;
-
-			result = mgcp_codec_pt_translate(&conn[0], &conn[1], expect->payload_type_map[0]);
-			printf(" - mgcp_codec_pt_translate(conn0, conn1, %d) -> %d\n",
-			       expect->payload_type_map[0], result);
-			if (result != expect->payload_type_map[1]) {
-				printf("     ERROR: expected -> %d\n", expect->payload_type_map[1]);
-				ok = false;
-			}
-
-			/* If the expected result is an error, don't do reverse map test */
-			if (expect->payload_type_map[1] < 0)
-				continue;
-
-			result = mgcp_codec_pt_translate(&conn[1], &conn[0], expect->payload_type_map[1]);
-			printf(" - mgcp_codec_pt_translate(conn1, conn0, %d) -> %d\n",
-			       expect->payload_type_map[1], result);
-			if (result != expect->payload_type_map[0]) {
-				printf("     ERROR: expected -> %d\n", expect->payload_type_map[0]);
-				ok = false;
-			}
-		}
-
-		for (conn_i = 0; conn_i < 2; conn_i++)
-			mgcp_codec_reset_all(&conn[conn_i]);
-	}
-
-	OSMO_ASSERT(ok);
+	/* Try some constellations that must fail */
+	pt_dst = mgcp_codec_pt_translate(&conn_src, &conn_dst, 123);
+	OSMO_ASSERT(pt_dst == -EINVAL);
+	conn_src.end.codecs_assigned = 0;
+	conn_dst.end.codecs_assigned = 3;
+	pt_dst =
+	    mgcp_codec_pt_translate(&conn_src, &conn_dst,
+				    conn_src.end.codecs[0].payload_type);
+	OSMO_ASSERT(pt_dst == -EINVAL);
+	pt_dst =
+	    mgcp_codec_pt_translate(&conn_src, &conn_dst,
+				    conn_src.end.codecs[1].payload_type);
+	OSMO_ASSERT(pt_dst == -EINVAL);
+	pt_dst =
+	    mgcp_codec_pt_translate(&conn_src, &conn_dst,
+				    conn_src.end.codecs[2].payload_type);
+	OSMO_ASSERT(pt_dst == -EINVAL);
+	conn_src.end.codecs_assigned = 3;
+	conn_dst.end.codecs_assigned = 0;
+	pt_dst =
+	    mgcp_codec_pt_translate(&conn_src, &conn_dst,
+				    conn_src.end.codecs[0].payload_type);
+	OSMO_ASSERT(pt_dst == -EINVAL);
+	pt_dst =
+	    mgcp_codec_pt_translate(&conn_src, &conn_dst,
+				    conn_src.end.codecs[1].payload_type);
+	OSMO_ASSERT(pt_dst == -EINVAL);
+	pt_dst =
+	    mgcp_codec_pt_translate(&conn_src, &conn_dst,
+				    conn_src.end.codecs[2].payload_type);
+	OSMO_ASSERT(pt_dst == -EINVAL);
 }

 void test_conn_id_matching()
--- a/tests/mgcp/mgcp_test.ok
+++ b/tests/mgcp/mgcp_test.ok
@@ -65,7 +65,7 @@ Testing CRCX
 creating message from statically defined input:
 ---------8<---------
 CRCX 2 1@mgw MGCP 1.0
-m: recvonly
+M: recvonly
 C: 2
 L: p:20

@@ -125,7 +125,7 @@ Testing MDCX4_PT1
 Testing MDCX4_PT1
 creating message from statically defined input:
 ---------8<---------
-MDCX 18983217 1@mgw MGCP 1.0
+MDCX 18983217 1@mgw MGCP 1.0
 M: sendrecv
 C: 2
 I: %s
@@ -192,35 +192,11 @@ Response matches our expectations.
 ---------8<---------
 checking response:
 using message with patched conn_id for comparison
-Response matches our expectations.
-(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
-c: 2
-i: %s
-l: 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
-m=audio 4441 RTP/AVP 99
-a=rtpmap:99 AMR/8000
-a=ptime:40
-
---------8<---------
-checking response:
 Response matches our expectations.
 (response contains a connection id)
 Dummy packets: 2

-
+================================================
 Testing MDCX4_SO
 creating message from statically defined input:
 ---------8<---------
@@ -243,7 +219,7 @@ Response matches our expectations.
 using message with patched conn_id for comparison
 Response matches our expectations.
 (response contains a connection id)
-(response contains a connection id)
+
 ================================================
 Testing MDCX4_RO
 creating message from statically defined input:
@@ -383,7 +359,7 @@ Testing CRCX
 I: %s
 C: 2

-
+---------8<---------
 checking response:
 using message as statically defined for comparison
 Response matches our expectations.
@@ -470,7 +446,7 @@ Dummy packets: 2
 a=rtpmap:97 GSM-EFR/8000
 a=ptime:40

-
+---------8<---------
 checking response:
 using message with patched conn_id for comparison
 Response matches our expectations.
@@ -479,36 +455,12 @@ using message as statically defined for comparison

 ================================================
 Testing MDCX_TOO_LONG_CI
-Testing MDCX_TOO_LONG_CI
-creating message from statically defined input:
---------8<---------
-MDCX 18983223 1@mgw MGCP 1.0
-I: 123456789012345678901234567890123
-
---------8<---------
-checking response:
-using message as statically defined for comparison
-Response matches our expectations.
-(response does not contain a connection id)
-
-================================================
-Testing CRCX
-creating message from statically defined input:
---------8<---------
-CRCX 2 7@mgw MGCP 1.0
-M: recvonly
-C: 2
-X
-L: p:20
-
-v=0
-c=IN IP4 123.12.12.123
 creating message from statically defined input:
 ---------8<---------
 MDCX 18983222 1@mgw MGCP 1.0
 I: 123456789012345678901234567890123

---------8<---------
+---------8<---------
 checking response:
 using message as statically defined for comparison
 Response matches our expectations.
@@ -526,7 +478,7 @@ Re-transmitting CRCX
 v=0
 c=IN IP4 123.12.12.123
 m=audio 5904 RTP/AVP 97
-m=audio 5904 RTP/AVP 97
+a=rtpmap:97 GSM-EFR/8000
 a=ptime:40

 ---------8<---------
@@ -638,7 +590,7 @@ Testing packet loss calculation.
 creating message from statically defined input:
 ---------8<---------
 DLCX 7 1@mgw MGCP 1.0
-DLCX 7 1@mgw MGCP 1.0
+I: %s
 C: 2

 ---------8<---------
@@ -1189,7 +1141,7 @@ Testing no rtpmap name
 a=rtpmap:96 iLBC/8000
 a=fmtp:96 mode=20
 a=rtpmap:97 iLBC/8000
-a=rtpmap:97 iLBC/8000
+a=fmtp:97 mode=30
 a=rtpmap:101 telephone-event/8000
 a=fmtp:101 0-15
 a=recvonly
@@ -1218,148 +1170,6 @@ p:10, a:PCMU -> p:10, a:PCMU
 p:10, a:PCMU -> p:10, a:PCMU
 p:10, a:PCMU -> p:10, a:PCMU
 'XXXX, p:10, a:PCMU' -> 'p:10, a:PCMU'
-'XXXX, p:10, a:PCMU' -> 'p:10, a:PCMU'
-'XXXX,p:10,a:PCMU' -> 'p:10,a:PCMU'
-'10,a:PCMU' -> 'a:PCMU'
-'10, a:PCMU' -> 'a:PCMU'
-'10,a: PCMU' -> 'a: PCMU'
-'10 ,a: PCMU' -> 'a: PCMU'
-', a:PCMU' -> 'a:PCMU'
-' a:PCMU' -> 'a:PCMU'
-'' -> '(null)'
-p10, aPCMU -> (null)
-'10,a :PCMU' -> '(null)'
-
-Testing mgcp_codec_pt_translate()
-#0: same order, but differing payload type numbers
- - add codecs on conn0:
-    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:
-    0:  96 AMR/8000/1 octet-aligned=1  -> rc=0
-    1:   0 PCMU/8000/1  -> rc=0
-    2:  97 GSM-HR-08/8000/1  -> rc=0
- - mgcp_codec_pt_translate(conn0, conn1, 112) -> 96
- - mgcp_codec_pt_translate(conn1, conn0, 96) -> 112
- - mgcp_codec_pt_translate(conn0, conn1, 0) -> 0
- - mgcp_codec_pt_translate(conn1, conn0, 0) -> 0
- - mgcp_codec_pt_translate(conn0, conn1, 111) -> 97
- - mgcp_codec_pt_translate(conn1, conn0, 97) -> 111
- - mgcp_codec_pt_translate(conn0, conn1, 123) -> -22
-#1: different order and different payload type numbers
- - add codecs on conn0:
-    0:   0 PCMU/8000/1  -> rc=0
-    1: 111 GSM-HR-08/8000/1  -> rc=0
-    2: 112 AMR/8000/1 octet-aligned=1  -> rc=0
- - add codecs on conn1:
-    0:  97 GSM-HR-08/8000/1  -> rc=0
-    1:   0 PCMU/8000/1  -> rc=0
-    2:  96 AMR/8000/1 octet-aligned=1  -> rc=0
- - mgcp_codec_pt_translate(conn0, conn1, 112) -> 96
- - mgcp_codec_pt_translate(conn1, conn0, 96) -> 112
- - mgcp_codec_pt_translate(conn0, conn1, 0) -> 0
- - mgcp_codec_pt_translate(conn1, conn0, 0) -> 0
- - mgcp_codec_pt_translate(conn0, conn1, 111) -> 97
- - mgcp_codec_pt_translate(conn1, conn0, 97) -> 111
- - mgcp_codec_pt_translate(conn0, conn1, 123) -> -22
-#2: both sides have the same payload_type numbers assigned to differing codecs
- - add codecs on conn0:
-    0:   0 PCMU/8000/1  -> rc=0
-    1:  96 GSM-HR-08/8000/1  -> rc=0
-    2:  97 AMR/8000/1 octet-aligned=1  -> rc=0
- - add codecs on conn1:
-    0:  97 GSM-HR-08/8000/1  -> rc=0
-    1:   0 PCMU/8000/1  -> rc=0
-    2:  96 AMR/8000/1 octet-aligned=1  -> rc=0
- - mgcp_codec_pt_translate(conn0, conn1, 96) -> 97
- - mgcp_codec_pt_translate(conn1, conn0, 97) -> 96
- - mgcp_codec_pt_translate(conn0, conn1, 97) -> 96
- - mgcp_codec_pt_translate(conn1, conn0, 96) -> 97
- - mgcp_codec_pt_translate(conn0, conn1, 0) -> 0
- - mgcp_codec_pt_translate(conn1, conn0, 0) -> 0
-#3: conn0 has no codecs
- - add codecs on conn0:
-    (none)
- - add codecs on conn1:
-    0:  96 AMR/8000/1 octet-aligned=1  -> rc=0
-    1:   0 PCMU/8000/1  -> rc=0
-    2:  97 GSM-HR-08/8000/1  -> rc=0
- - mgcp_codec_pt_translate(conn0, conn1, 112) -> -22
- - 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
-    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:
-    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
-    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
-#7: test AMR with NULL param (defaults to 0)
- - 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:
-    0: 122 AMR/8000  -> 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
-#8: match FOO/8000/1 and FOO/8000 as identical, single channel is implicit
- - add codecs on conn0:
-    0:   0 PCMU/8000/1  -> rc=0
-    1: 111 GSM-HR-08/8000/1  -> rc=0
-    2: 112 AMR/8000/1 octet-aligned=1  -> rc=0
- - add codecs on conn1:
-    0:  97 GSM-HR-08/8000  -> rc=0
-    1:   0 PCMU/8000  -> rc=0
-    2:  96 AMR/8000 octet-aligned=1  -> rc=0
- - mgcp_codec_pt_translate(conn0, conn1, 112) -> 96
- - mgcp_codec_pt_translate(conn1, conn0, 96) -> 112
- - mgcp_codec_pt_translate(conn0, conn1, 0) -> 0
- - mgcp_codec_pt_translate(conn1, conn0, 0) -> 0
- - mgcp_codec_pt_translate(conn0, conn1, 111) -> 97
- - mgcp_codec_pt_translate(conn1, conn0, 97) -> 111
- - mgcp_codec_pt_translate(conn0, conn1, 123) -> -22
-#9: match FOO/8000/1 and FOO as identical, 8k and single channel are implicit
- - add codecs on conn0:
-    0:   0 PCMU/8000/1  -> rc=0
-    1: 111 GSM-HR-08/8000/1  -> rc=0
-    2: 112 AMR/8000/1 octet-aligned=1  -> rc=0
- - add codecs on conn1:
-    0:  97 GSM-HR-08  -> rc=0
-    1:   0 PCMU  -> rc=0
-    2:  96 AMR octet-aligned=1  -> rc=0
- - mgcp_codec_pt_translate(conn0, conn1, 112) -> 96
- - mgcp_codec_pt_translate(conn1, conn0, 96) -> 112
- - mgcp_codec_pt_translate(conn0, conn1, 0) -> 0
- - mgcp_codec_pt_translate(conn1, conn0, 0) -> 0
- - mgcp_codec_pt_translate(conn0, conn1, 111) -> 97
- - mgcp_codec_pt_translate(conn1, conn0, 97) -> 111
- - mgcp_codec_pt_translate(conn0, conn1, 123) -> -22
-#10: test whether channel number matching is waterproof
 'XXXX,p:10,a:PCMU' -> 'p:10,a:PCMU'
 '10,a:PCMU' -> 'a:PCMU'
 '10, a:PCMU' -> 'a:PCMU'
--- a/tests/mgcp_client/mgcp_client_test.c
+++ b/tests/mgcp_client/mgcp_client_test.c
@@ -113,9 +113,9 @@ void test_response_cb(struct mgcp_response *response, void *priv)
 	printf("  ptmap_len = %u\n", response->ptmap_len);
 	for(i=0;i<response->ptmap_len;i++) {
 		printf("  ptmap[%u].codec = %u\n", i, response->ptmap[i].codec);
-		printf("  ptmap[%u].pt = %u\n", i, response->ptmap[i].pt);
+		printf("  ptmap[%u].pt = %u\n", i, response->ptmap[i].pt);		
 	}
-
+	
 }

 mgcp_trans_id_t dummy_mgcp_send(struct msgb *msg)
@@ -157,7 +157,6 @@ void test_mgcp_msg(void)
 		.ptmap[0].pt = 96,
 		.ptmap_len = 1,
 		.x_osmo_ign = MGCP_X_OSMO_IGN_CALLID,
-		.x_osmo_osmux_cid = -1, /* wildcard */
 	};

 	if (mgcp)
@@ -181,7 +180,7 @@ void test_mgcp_msg(void)
 	     MGCP_MSG_PRESENCE_CONN_ID | MGCP_MSG_PRESENCE_CONN_MODE);
 	mgcp_msg.codecs_len = 2;
 	msg = mgcp_msg_gen(mgcp, &mgcp_msg);
-	mgcp_msg.codecs_len = 1;
+	mgcp_msg.codecs_len = 1;	
 	printf("%s\n", (char *)msg->data);

 	printf("Generated CRCX message (three codecs, one with custom pt):\n");
@@ -191,8 +190,8 @@ void test_mgcp_msg(void)
 	     MGCP_MSG_PRESENCE_CONN_ID | MGCP_MSG_PRESENCE_CONN_MODE);
 	mgcp_msg.codecs_len = 3;
 	msg = mgcp_msg_gen(mgcp, &mgcp_msg);
-	mgcp_msg.codecs_len = 1;
-	printf("%s\n", (char *)msg->data);
+	mgcp_msg.codecs_len = 1;	
+	printf("%s\n", (char *)msg->data);		

 	printf("Generated MDCX message:\n");
 	mgcp_msg.verb = MGCP_VERB_MDCX;
@@ -211,7 +210,7 @@ void test_mgcp_msg(void)
 	     MGCP_MSG_PRESENCE_AUDIO_IP | MGCP_MSG_PRESENCE_AUDIO_PORT);
 	mgcp_msg.codecs_len = 2;
 	msg = mgcp_msg_gen(mgcp, &mgcp_msg);
-	mgcp_msg.codecs_len = 1;
+	mgcp_msg.codecs_len = 1;	
 	printf("%s\n", (char *)msg->data);

 	printf("Generated MDCX message (three codecs, one with custom pt):\n");
@@ -222,8 +221,8 @@ void test_mgcp_msg(void)
 	     MGCP_MSG_PRESENCE_AUDIO_IP | MGCP_MSG_PRESENCE_AUDIO_PORT);
 	mgcp_msg.codecs_len = 3;
 	msg = mgcp_msg_gen(mgcp, &mgcp_msg);
-	mgcp_msg.codecs_len = 1;
-	printf("%s\n", (char *)msg->data);
+	mgcp_msg.codecs_len = 1;	
+	printf("%s\n", (char *)msg->data);	

 	printf("Generated DLCX message:\n");
 	mgcp_msg.verb = MGCP_VERB_DLCX;
@@ -255,38 +254,6 @@ void test_mgcp_msg(void)
 	msg = mgcp_msg_gen(mgcp, &mgcp_msg);
 	printf("%s\n", (char *)msg->data);

-	printf("Generate X-Osmo-Osmux message:\n");
-	msg = mgcp_msg_gen(mgcp, &mgcp_msg);
-	mgcp_msg.verb = MGCP_VERB_CRCX;
-	mgcp_msg.presence =
-	    (MGCP_MSG_PRESENCE_ENDPOINT | MGCP_MSG_PRESENCE_CALL_ID |
-	     MGCP_MSG_PRESENCE_CONN_ID | MGCP_MSG_PRESENCE_CONN_MODE
-	     | MGCP_MSG_PRESENCE_X_OSMO_OSMUX_CID);
-	msg = mgcp_msg_gen(mgcp, &mgcp_msg);
-	printf("%s\n", (char *)msg->data);
-
-	printf("Generate X-Osmo-Osmux message (fixed CID 2):\n");
-	msg = mgcp_msg_gen(mgcp, &mgcp_msg);
-	mgcp_msg.verb = MGCP_VERB_CRCX;
-	mgcp_msg.x_osmo_osmux_cid = 2;
-	mgcp_msg.presence =
-	    (MGCP_MSG_PRESENCE_ENDPOINT | MGCP_MSG_PRESENCE_CALL_ID |
-	     MGCP_MSG_PRESENCE_CONN_ID | MGCP_MSG_PRESENCE_CONN_MODE
-	     | MGCP_MSG_PRESENCE_X_OSMO_OSMUX_CID);
-	msg = mgcp_msg_gen(mgcp, &mgcp_msg);
-	printf("%s\n", (char *)msg->data);
-
-	printf("Generate X-Osmo-Osmux message (MDCX):\n");
-	msg = mgcp_msg_gen(mgcp, &mgcp_msg);
-	mgcp_msg.verb = MGCP_VERB_MDCX;
-	mgcp_msg.x_osmo_osmux_cid = 2;
-	mgcp_msg.presence =
-	    (MGCP_MSG_PRESENCE_ENDPOINT | MGCP_MSG_PRESENCE_CALL_ID |
-	     MGCP_MSG_PRESENCE_CONN_ID | MGCP_MSG_PRESENCE_CONN_MODE
-	     | MGCP_MSG_PRESENCE_X_OSMO_OSMUX_CID);
-	msg = mgcp_msg_gen(mgcp, &mgcp_msg);
-	printf("%s\n", (char *)msg->data);
-
 	printf("Overfolow test:\n");
 	mgcp_msg.verb = MGCP_VERB_MDCX;
 	mgcp_msg.presence =
@@ -319,7 +286,7 @@ void test_mgcp_client_cancel()
 			     | MGCP_MSG_PRESENCE_CONN_ID | MGCP_MSG_PRESENCE_CONN_MODE),
 		.ptime = 20,
 		.codecs[0] = CODEC_AMR_8000_1,
-		.codecs_len = 1
+		.codecs_len = 1		
 	};

 	printf("\n%s():\n", __func__);
@@ -360,7 +327,7 @@ struct sdp_section_start_test {
 static struct sdp_section_start_test sdp_section_start_tests[] = {
 	{
 		.body = "",
-		.expect_rc = 0,
+		.expect_rc = -EINVAL,
 	},
 	{
 		.body = "\n\n",
@@ -399,19 +366,19 @@ static struct sdp_section_start_test sdp_section_start_tests[] = {
 		.body = "some mgcp header data\r\nand header params"
 			"\n\r\n"
 			"m=audio 23\r\n",
-		.expect_rc = 0,
+		.expect_rc = -EINVAL,
 	},
 	{
 		.body = "some mgcp header data\r\nand header params"
 			"\r\n\r"
 			"m=audio 23\r\n",
-		.expect_rc = 0,
+		.expect_rc = -EINVAL,
 	},
 	{
 		.body = "some mgcp header data\r\nand header params"
 			"\n\r\r"
 			"m=audio 23\r\n",
-		.expect_rc = 0,
+		.expect_rc = -EINVAL,
 	},
 };

--- a/tests/mgcp_client/mgcp_client_test.err
+++ b/tests/mgcp_client/mgcp_client_test.err
@@ -17,9 +17,8 @@ test_mgcp_client_cancel() done

 test_sdp_section_start() test [0]:
 body: ""
-DLMGCP MGCP response contains no SDP parameters
-got rc=0
-got audio_port=0
+DLMGCP MGCP response: cannot find start of SDP parameters
+got rc=-22

 test_sdp_section_start() test [1]:
 body: "\n\n"
@@ -53,21 +52,18 @@ got audio_port=23

 test_sdp_section_start() test [7]:
 body: "some mgcp header data\r\nand header params\n\r\nm=audio 23\r\n"
-DLMGCP MGCP response contains no SDP parameters
-got rc=0
-got audio_port=0
+DLMGCP MGCP response: cannot find start of SDP parameters
+got rc=-22

 test_sdp_section_start() test [8]:
 body: "some mgcp header data\r\nand header params\r\n\rm=audio 23\r\n"
-DLMGCP MGCP response contains no SDP parameters
-got rc=0
-got audio_port=0
+DLMGCP MGCP response: cannot find start of SDP parameters
+got rc=-22

 test_sdp_section_start() test [9]:
 body: "some mgcp header data\r\nand header params\n\r\rm=audio 23\r\n"
-DLMGCP MGCP response contains no SDP parameters
-got rc=0
-got audio_port=0
+DLMGCP MGCP response: cannot find start of SDP parameters
+got rc=-22
 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
--- a/tests/mgcp_client/mgcp_client_test.ok
+++ b/tests/mgcp_client/mgcp_client_test.ok
@@ -84,30 +84,6 @@ L: p:20, a:GSM, nt:IN
 M: sendrecv
 X-Osmo-IGN: C

-Generate X-Osmo-Osmux message:
-CRCX 13 23@mgw MGCP 1.0
-C: 2f
-I: 11
-L: p:20, a:GSM, nt:IN
-M: sendrecv
-X-Osmux: *
-
-Generate X-Osmo-Osmux message (fixed CID 2):
-CRCX 15 23@mgw MGCP 1.0
-C: 2f
-I: 11
-L: p:20, a:GSM, nt:IN
-M: sendrecv
-X-Osmux: 2
-
-Generate X-Osmo-Osmux message (MDCX):
-MDCX 17 23@mgw MGCP 1.0
-C: 2f
-I: 11
-L: p:20, a:GSM, nt:IN
-M: sendrecv
-X-Osmux: 2
-
 Overfolow test: