mirror of
https://github.com/RangeNetworks/openbts.git
synced 2025-11-03 21:33:15 +00:00
667 lines
14 KiB
C++
667 lines
14 KiB
C++
/**@file Messages for Call Control, GSM 04.08 9.3. */
|
|
|
|
/*
|
|
* Copyright 2008, 2009 Free Software Foundation, Inc.
|
|
* Copyright 2011, 2014 Range Networks, Inc.
|
|
*
|
|
* This software is distributed under multiple licenses;
|
|
* see the COPYING file in the main directory for licensing
|
|
* information for this specific distribution.
|
|
*
|
|
* This use of this software may be subject to additional restrictions.
|
|
* See the LEGAL file in the main directory for details.
|
|
|
|
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.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#ifndef GSML3CCMESSAGES_H
|
|
#define GSML3CCMESSAGES_H
|
|
|
|
#include "GSMCommon.h"
|
|
#include "GSML3Message.h"
|
|
#include "GSML3CommonElements.h"
|
|
#include "GSML3CCElements.h"
|
|
#include "GSML3SSMessages.h"
|
|
#include <ControlTransfer.h>
|
|
|
|
|
|
namespace GSM {
|
|
|
|
|
|
|
|
/**
|
|
This a virtual class for L3 messages in the Call Control protocol.
|
|
These messages are defined in GSM 04.08 9.3.
|
|
|
|
GSM call control is based on and nearly identical to ISDN call control.
|
|
ISDN call control is defined in ITU-T Q.931.
|
|
*/
|
|
class L3CCMessage : public L3Message {
|
|
|
|
private:
|
|
|
|
unsigned mTI; ///< short transaction ID, GSM 04.07 11.2.3.1.3; upper bit is originator flag
|
|
// Uppder bit is 0 for originating side, see GSM 04.07 11.2.3.1.3.
|
|
|
|
public:
|
|
|
|
/** GSM 04.08, Table 10.3, bit 6 is "don't care" */
|
|
enum MessageType {
|
|
/**@name call establishment */
|
|
//@{
|
|
Alerting=0x01,
|
|
CallConfirmed=0x08,
|
|
CallProceeding=0x02,
|
|
Connect=0x07,
|
|
Setup=0x05,
|
|
EmergencySetup=0x0e,
|
|
ConnectAcknowledge=0x0f,
|
|
Progress=0x03,
|
|
//@}
|
|
/**@name call clearing */
|
|
//@{
|
|
Disconnect=0x25, // 37
|
|
Release=0x2d,
|
|
ReleaseComplete=0x2a, // 42
|
|
//@}
|
|
/**@name DTMF */
|
|
//@{
|
|
StartDTMF=0x35,
|
|
StopDTMF=0x31,
|
|
StopDTMFAcknowledge=0x32,
|
|
StartDTMFAcknowledge=0x36,
|
|
StartDTMFReject=0x37,
|
|
//@}
|
|
/**@name In-call services */
|
|
//@{
|
|
Hold=0x18,
|
|
HoldReject=0x1a,
|
|
//@}
|
|
/**@name error reporting */
|
|
//@{
|
|
CCStatus= 0x3d
|
|
//@}
|
|
};
|
|
|
|
L3CCMessage(unsigned wTI)
|
|
:L3Message(),mTI(wTI)
|
|
{}
|
|
|
|
|
|
size_t fullBodyLength() const { return l2BodyLength(); }
|
|
|
|
/** Override the write method to include transaction identifiers in header. */
|
|
void write(L3Frame& dest) const;
|
|
|
|
L3PD PD() const { return L3CallControlPD; }
|
|
|
|
unsigned TI() const { return mTI; }
|
|
void TI(unsigned wTI) { mTI = wTI; }
|
|
|
|
void text(std::ostream&) const;
|
|
};
|
|
|
|
|
|
class L3CCCommonIEs {
|
|
public:
|
|
Bool_z mHaveFacility;
|
|
L3SupServFacilityIE mFacility;
|
|
// The SS Version is variable length, which is nonsense, because it is one byte which can take the values 0 or 1. Woo hoo!
|
|
Bool_z mHaveSSVersion;
|
|
L3SupServVersionIndicator mSSVersion;
|
|
|
|
void ccCommonText(std::ostream&) const;
|
|
void ccCommonParse( const L3Frame &src, size_t &rp );
|
|
void ccCommonWrite( L3Frame &dest, size_t &wp ) const;
|
|
size_t ccCommonLength() const;
|
|
};
|
|
|
|
|
|
std::ostream& operator<<(std::ostream& os, L3CCMessage::MessageType MTI);
|
|
|
|
|
|
/**
|
|
Parse a complete L3 call control message into its object type.
|
|
@param source The L3 bits.
|
|
@return A pointer to a new message or NULL on failure.
|
|
*/
|
|
L3CCMessage* parseL3CC(const L3Frame& source);
|
|
|
|
/**
|
|
A Factory function to return a L3CCMessage of the specified MTI.
|
|
Returns NULL if the MTI is not supported.
|
|
*/
|
|
L3CCMessage* L3CCFactory(L3CCMessage::MessageType MTI);
|
|
|
|
|
|
/** GSM 04.08 9.3.19 */
|
|
class L3Release : public L3CCMessage, public L3CCCommonIEs {
|
|
|
|
private:
|
|
|
|
// We're ignoring "facility" and "user-user" for now.
|
|
bool mHaveCause;
|
|
L3CauseElement mCause;
|
|
|
|
public:
|
|
|
|
L3Release(unsigned wTI=7)
|
|
:L3CCMessage(wTI),
|
|
mHaveCause(false)
|
|
{}
|
|
|
|
L3Release(unsigned wTI, const CCCause wCause)
|
|
:L3CCMessage(wTI),
|
|
mHaveCause(true),mCause(wCause)
|
|
{}
|
|
|
|
bool haveCause() const { return mHaveCause; }
|
|
const L3CauseElement& cause() const { return mCause; }
|
|
int MTI() const { return Release; }
|
|
void writeBody( L3Frame &dest, size_t &wp ) const;
|
|
void parseBody( const L3Frame &src, size_t &rp );
|
|
size_t l2BodyLength() const;
|
|
|
|
void text(std::ostream&) const;
|
|
|
|
};
|
|
|
|
|
|
class L3CCStatus : public L3CCMessage
|
|
{
|
|
private:
|
|
L3CauseElement mCause;
|
|
L3CallState mCallState;
|
|
public:
|
|
|
|
L3CCStatus(unsigned wTI=7)
|
|
:L3CCMessage(wTI)
|
|
{}
|
|
|
|
L3CCStatus(unsigned wTI, const CCCause wCause, const L3CallState &wCallState)
|
|
:L3CCMessage(wTI),
|
|
mCause(wCause),
|
|
mCallState(wCallState)
|
|
{}
|
|
|
|
const L3CauseElement& cause() const { return mCause; }
|
|
const L3CallState callState() const { return mCallState; }
|
|
|
|
int MTI() const { return CCStatus; }
|
|
void writeBody( L3Frame &dest, size_t &wp ) const;
|
|
void parseBody( const L3Frame &src, size_t &rp );
|
|
size_t l2BodyLength() const { return 4; }
|
|
|
|
void text(std::ostream&) const;
|
|
};
|
|
|
|
|
|
|
|
/** GSM 04.08 9.3.19 */
|
|
class L3ReleaseComplete : public L3CCMessage, public L3CCCommonIEs {
|
|
|
|
private:
|
|
|
|
// We're ignoring "facility" and "user-user" for now.
|
|
bool mHaveCause;
|
|
L3CauseElement mCause;
|
|
|
|
public:
|
|
|
|
L3ReleaseComplete(unsigned wTI=7)
|
|
:L3CCMessage(wTI),
|
|
mHaveCause(false)
|
|
{}
|
|
|
|
L3ReleaseComplete(unsigned wTI, const CCCause wCause)
|
|
:L3CCMessage(wTI),
|
|
mHaveCause(true),mCause(wCause)
|
|
{}
|
|
|
|
int MTI() const { return ReleaseComplete; }
|
|
void writeBody( L3Frame &dest, size_t &wp ) const;
|
|
void parseBody( const L3Frame &src, size_t &rp );
|
|
size_t l2BodyLength() const;
|
|
|
|
void text(std::ostream&) const;
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
GSM 04.08 9.3.23
|
|
This message can have different forms for uplink and downlink
|
|
but the TLV format is flexiable enough to allow us to use one class for both.
|
|
*/
|
|
class L3Setup : public L3CCMessage, public L3CCCapabilities, public L3CCCommonIEs
|
|
{
|
|
// We fill in IEs one at a time as we need them.
|
|
|
|
/// Calling Party BCD Number (0x5C O TLV 3-19 ).
|
|
Bool_z mHaveCallingPartyBCDNumber;
|
|
L3CallingPartyBCDNumber mCallingPartyBCDNumber;
|
|
|
|
/// Called Party BCD Number (0x5E O TLV 3-19).
|
|
Bool_z mHaveCalledPartyBCDNumber;
|
|
L3CalledPartyBCDNumber mCalledPartyBCDNumber;
|
|
|
|
Bool_z mHaveSignal;
|
|
L3Signal mSignal;
|
|
public:
|
|
|
|
L3Setup(unsigned wTI=7)
|
|
:L3CCMessage(wTI)
|
|
{ }
|
|
|
|
|
|
L3Setup(unsigned wTI, const L3CalledPartyBCDNumber& wCalledPartyBCDNumber)
|
|
:L3CCMessage(wTI) ,
|
|
mHaveCalledPartyBCDNumber(true),mCalledPartyBCDNumber(wCalledPartyBCDNumber)
|
|
{ }
|
|
|
|
// (pat) This is cleverly converting callingPartyBCDNumber to a char string and back.
|
|
L3Setup(unsigned wTI, const L3CallingPartyBCDNumber& wCallingPartyBCDNumber)
|
|
:L3CCMessage(wTI),
|
|
mHaveCallingPartyBCDNumber(true),mCallingPartyBCDNumber(wCallingPartyBCDNumber)
|
|
{ }
|
|
|
|
void setSignal(L3Signal &whatever) { mHaveSignal = true; mSignal = whatever; }
|
|
|
|
|
|
/** Accessors */
|
|
//@{
|
|
bool haveCalledPartyBCDNumber() const { return mHaveCalledPartyBCDNumber; }
|
|
|
|
const L3CalledPartyBCDNumber& calledPartyBCDNumber() const
|
|
{ assert(mHaveCalledPartyBCDNumber); return mCalledPartyBCDNumber; }
|
|
//@}
|
|
|
|
int MTI() const { return Setup; }
|
|
void writeBody( L3Frame &dest, size_t &wp ) const;
|
|
void parseBody( const L3Frame &src, size_t &rp );
|
|
|
|
size_t l2BodyLength() const;
|
|
|
|
void text(std::ostream&) const;
|
|
};
|
|
|
|
|
|
/**
|
|
GSM 04.08 9.3.8
|
|
*/
|
|
// (pat) 5-2013: This uses a subset of the IEs as L3Setup, so we can use that class to parse it.
|
|
//class L3EmergencySetup : public L3CCMessage
|
|
class L3EmergencySetup : public L3Setup
|
|
{
|
|
public:
|
|
|
|
//L3EmergencySetup(unsigned wTI=7) :L3CCMessage(wTI) { }
|
|
|
|
int MTI() const { return EmergencySetup; }
|
|
//void parseBody(const L3Frame &src, size_t &rp) {} // parseBody supplied by L3Setup.
|
|
size_t l2BodyLength() const { return 0; } // We dont write this message, so we dont care about this.
|
|
};
|
|
|
|
|
|
|
|
|
|
/** GSM 04.08 9.3.3 */
|
|
class L3CallProceeding : public L3CCMessage {
|
|
|
|
private:
|
|
|
|
// We'fill in IEs one at a time as we need them.
|
|
|
|
// (pat) Should be modified to use L3CCCapabilities.
|
|
//bool mHaveBearerCapability;
|
|
L3BearerCapability mBearerCapability;
|
|
|
|
bool mHaveProgress;
|
|
L3ProgressIndicator mProgress;
|
|
|
|
public:
|
|
|
|
L3CallProceeding(unsigned wTI=7)
|
|
:L3CCMessage(wTI),
|
|
//mHaveBearerCapability(false),
|
|
mHaveProgress(false)
|
|
{}
|
|
|
|
int MTI() const { return CallProceeding; }
|
|
void writeBody( L3Frame & dest, size_t &wp ) const;
|
|
void parseBody( const L3Frame &src, size_t &wp );
|
|
size_t l2BodyLength() const;
|
|
|
|
void text(std::ostream&) const;
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
GSM 04.08 9.3.1.
|
|
Even though uplink and downlink forms have different optional fields,
|
|
we can use a single message for both sides.
|
|
*/
|
|
class L3Alerting : public L3CCMessage, public L3CCCommonIEs
|
|
{
|
|
private:
|
|
|
|
Bool_z mHaveProgress;
|
|
L3ProgressIndicator mProgress; ///< Progress appears in downlink only.
|
|
|
|
public:
|
|
|
|
L3Alerting(unsigned wTI=7)
|
|
:L3CCMessage(wTI)
|
|
//,mHaveProgress(false)
|
|
{}
|
|
|
|
L3Alerting(unsigned wTI,const L3ProgressIndicator& wProgress)
|
|
:L3CCMessage(wTI),
|
|
mHaveProgress(true),mProgress(wProgress)
|
|
{}
|
|
|
|
int MTI() const { return Alerting; }
|
|
void writeBody(L3Frame &dest, size_t &wp) const;
|
|
void parseBody(const L3Frame& src, size_t &rp);
|
|
size_t l2BodyLength() const;
|
|
|
|
void text(std::ostream&) const;
|
|
};
|
|
|
|
|
|
|
|
|
|
/** GSM 04.08 9.3.5 */
|
|
class L3Connect : public L3CCMessage
|
|
{
|
|
private:
|
|
|
|
bool mHaveProgress;
|
|
L3ProgressIndicator mProgress; ///< Progress appears in uplink only.
|
|
|
|
public:
|
|
|
|
L3Connect(unsigned wTI=7)
|
|
:L3CCMessage(wTI),
|
|
mHaveProgress(false)
|
|
{}
|
|
|
|
L3Connect(unsigned wTI, const L3ProgressIndicator& wProgress)
|
|
:L3CCMessage(wTI),
|
|
mHaveProgress(true),mProgress(wProgress)
|
|
{}
|
|
|
|
int MTI() const { return Connect; }
|
|
void writeBody( L3Frame &dest, size_t &wp ) const;
|
|
void parseBody(const L3Frame &src, size_t &wp);
|
|
size_t l2BodyLength() const;
|
|
void text(std::ostream&) const;
|
|
};
|
|
|
|
|
|
|
|
|
|
/** GSM 04.08 9.3.6 */
|
|
class L3ConnectAcknowledge : public L3CCMessage
|
|
{
|
|
public:
|
|
|
|
L3ConnectAcknowledge(unsigned wTI=7)
|
|
:L3CCMessage(wTI)
|
|
{}
|
|
|
|
int MTI() const { return ConnectAcknowledge; }
|
|
void writeBody( L3Frame &/*dest*/, size_t &/*wp*/ ) const {}
|
|
void parseBody( const L3Frame &/*src*/, size_t &/*rp*/ ) {}
|
|
size_t l2BodyLength() const { return 0; }
|
|
|
|
};
|
|
|
|
|
|
/** GSM 04.08 9.3.7 */
|
|
class L3Disconnect : public L3CCMessage {
|
|
|
|
private:
|
|
|
|
L3CauseElement mCause;
|
|
|
|
public:
|
|
|
|
/** Initialize with default cause of 0x10 "normal call clearing". */
|
|
L3Disconnect(unsigned wTI=7, const CCCause wCause = L3Cause::Normal_Call_Clearing)
|
|
:L3CCMessage(wTI),
|
|
mCause(wCause)
|
|
{}
|
|
|
|
const L3CauseElement& cause() const { return mCause; }
|
|
int MTI() const { return Disconnect; }
|
|
void writeBody( L3Frame &dest, size_t &wp ) const;
|
|
void parseBody( const L3Frame &src, size_t &rp );
|
|
size_t l2BodyLength() const { return mCause.lengthLV(); }
|
|
void text(std::ostream&) const;
|
|
};
|
|
|
|
|
|
|
|
/** GSM 04.08 9.3.2 */
|
|
class L3CallConfirmed : public L3CCMessage, public L3CCCapabilities {
|
|
|
|
private:
|
|
|
|
// (pat) BearerCapability is sent by GSM phone
|
|
//Bool_z mHaveBearerCapability;
|
|
//L3BearerCapability mBearerCapability;
|
|
Bool_z mHaveCause;
|
|
L3CauseElement mCause;
|
|
|
|
// (pat) SupportedCodecList is sent by UMTS phone
|
|
//Bool_z mHaveSupportedCodecs;
|
|
//L3SupportedCodecList mSupportedCodecs;
|
|
|
|
public:
|
|
|
|
L3CallConfirmed(unsigned wTI=7)
|
|
:L3CCMessage(wTI)
|
|
//mHaveCause(false),
|
|
//mHaveSupportedCodecs(false)
|
|
{}
|
|
|
|
int MTI() const { return CallConfirmed; }
|
|
void parseBody(const L3Frame &src, size_t &rp);
|
|
size_t l2BodyLength() const;
|
|
|
|
void text(std::ostream& os) const;
|
|
|
|
};
|
|
|
|
|
|
|
|
/** GSM 04.08 9.3.24 */
|
|
class L3StartDTMF : public L3CCMessage {
|
|
|
|
private:
|
|
|
|
L3KeypadFacility mKey;
|
|
|
|
public:
|
|
|
|
L3StartDTMF(unsigned wTI=7)
|
|
:L3CCMessage(wTI)
|
|
{}
|
|
|
|
const L3KeypadFacility& key() const { return mKey; }
|
|
int MTI() const { return StartDTMF; }
|
|
void parseBody(const L3Frame &src, size_t &rp) { mKey.parseTV(0x2c,src,rp); }
|
|
size_t l2BodyLength() const { return mKey.lengthTV(); }
|
|
|
|
void text(std::ostream& os) const;
|
|
};
|
|
|
|
|
|
/** GSM 04.08 9.3.25 */
|
|
class L3StartDTMFAcknowledge : public L3CCMessage {
|
|
|
|
private:
|
|
|
|
L3KeypadFacility mKey;
|
|
|
|
public:
|
|
|
|
L3StartDTMFAcknowledge(unsigned wTI, const L3KeypadFacility& wKey)
|
|
:L3CCMessage(wTI),
|
|
mKey(wKey)
|
|
{}
|
|
|
|
int MTI() const { return StartDTMFAcknowledge; }
|
|
void writeBody(L3Frame &dest, size_t &wp) const { mKey.writeTV(0x2C,dest,wp); }
|
|
size_t l2BodyLength() const { return mKey.lengthTV(); }
|
|
|
|
void text(std::ostream& os) const;
|
|
};
|
|
|
|
|
|
|
|
|
|
/** GSM 04.08 9.3.26 */
|
|
class L3StartDTMFReject : public L3CCMessage {
|
|
|
|
private:
|
|
|
|
L3CauseElement mCause;
|
|
|
|
public:
|
|
|
|
/** Reject with default cause 0x3f, "service or option not available". */
|
|
L3StartDTMFReject(unsigned wTI, const CCCause wCause)
|
|
:L3CCMessage(wTI),
|
|
mCause(wCause)
|
|
{}
|
|
|
|
int MTI() const { return StartDTMFReject; }
|
|
void writeBody(L3Frame &src, size_t &rp) const { mCause.writeLV(src,rp); }
|
|
size_t l2BodyLength() const { return mCause.lengthLV(); }
|
|
|
|
void text(std::ostream& os) const;
|
|
};
|
|
|
|
|
|
/** GSM 04.08 9.3.29 */
|
|
class L3StopDTMF : public L3CCMessage {
|
|
|
|
public:
|
|
|
|
L3StopDTMF(unsigned wTI=7)
|
|
:L3CCMessage(wTI)
|
|
{}
|
|
|
|
int MTI() const { return StopDTMF; }
|
|
void parseBody(const L3Frame &/*src*/, size_t &/*rp*/) { }
|
|
size_t l2BodyLength() const { return 0; };
|
|
};
|
|
|
|
|
|
/** GSM 04.08 9.3.30 */
|
|
class L3StopDTMFAcknowledge : public L3CCMessage {
|
|
|
|
public:
|
|
|
|
L3StopDTMFAcknowledge(unsigned wTI)
|
|
:L3CCMessage(wTI)
|
|
{}
|
|
|
|
int MTI() const { return StopDTMFAcknowledge; }
|
|
void writeBody(L3Frame&, size_t&) const { }
|
|
size_t l2BodyLength() const { return 0; }
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/** GSM 04.08 9.3.17 */
|
|
// pat 2-2014: GSM 4.08 5.5.1: The ProgressIndicator is used to start in-band tones and announcements
|
|
// if the value is 1-3 or 6-20.
|
|
class L3Progress : public L3CCMessage
|
|
{
|
|
L3ProgressIndicator mProgress;
|
|
|
|
public:
|
|
|
|
L3Progress(unsigned wTI, const L3ProgressIndicator& wProgress)
|
|
:L3CCMessage(wTI),
|
|
mProgress(wProgress)
|
|
{}
|
|
|
|
L3Progress(unsigned wTI)
|
|
:L3CCMessage(wTI)
|
|
{}
|
|
|
|
int MTI() const { return Progress; }
|
|
void writeBody( L3Frame &dest, size_t &wp ) const;
|
|
void parseBody(const L3Frame &src, size_t &wp);
|
|
size_t l2BodyLength() const;
|
|
void text(std::ostream&) const;
|
|
};
|
|
|
|
|
|
/** GSM 04.08 9.3.10 */
|
|
class L3Hold : public L3CCMessage
|
|
{
|
|
public:
|
|
|
|
L3Hold(unsigned wTI=7)
|
|
:L3CCMessage(wTI)
|
|
{}
|
|
|
|
int MTI() const { return Hold; }
|
|
void writeBody( L3Frame &/*dest*/, size_t &/*wp*/ ) const {}
|
|
void parseBody( const L3Frame &/*src*/, size_t &/*rp*/ ) {}
|
|
size_t l2BodyLength() const { return 0; }
|
|
|
|
};
|
|
|
|
|
|
|
|
/** GSM 04.08 9.3.12 */
|
|
class L3HoldReject : public L3CCMessage {
|
|
|
|
private:
|
|
|
|
L3CauseElement mCause;
|
|
|
|
public:
|
|
|
|
/** Reject with default cause 0x3f, "service or option not available". */
|
|
L3HoldReject(unsigned wTI, const CCCause wCause)
|
|
:L3CCMessage(wTI),
|
|
mCause(wCause)
|
|
{}
|
|
|
|
int MTI() const { return HoldReject; }
|
|
void writeBody(L3Frame &src, size_t &rp) const { mCause.writeLV(src,rp); }
|
|
size_t l2BodyLength() const { return mCause.lengthLV(); }
|
|
|
|
void text(std::ostream& os) const;
|
|
};
|
|
|
|
|
|
|
|
|
|
/** GSM 04.08 9.3.6 */
|
|
|
|
|
|
}; // GSM
|
|
|
|
|
|
#endif
|
|
// vim: ts=4 sw=4
|