Content for TS 29.163 Word version: 17.3.0
8 User plane interworking
8.1 Interworking between IM CN subsystem and bearer independent CS network
8.2 Interworking between IM CN subsystem and TDM-based CS network
8.3 Transcoding requirements
8.4 Diffserv code point requirements
8.5 DTMF handling
9 MGCF - IM-MGW Interaction
9.1 Overview
9.2 Mn signalling interactions
9.3 Mn Signalling procedures
9.4 Multimedia Priority Service (MPS) Support
8 User plane interworking p. 184
8.1 Interworking between IM CN subsystem and bearer independent CS network p. 184
8.1.1 Transcoder-less Mb to Nb Interworking p. 185
8.1.1.1 Initialisation p. 185
8.1.1.2 Time alignment p. 185
8.1.1.3 Rate control p. 185
8.1.1.3.1 General |R13| p. 185
8.1.1.3.2 Rate control for AMR and AMR-WB codecs |R13| p. 185
8.1.1.3.3 Rate and Mode control for the EVS codec |R13| p. 186
8.1.1.3.4 Interworking of rate control between compatible AMR-WB and EVS codec configurations |R13| p. 187
8.1.1.3.5 Interworking between rate control and RTCP-APP-CMR messages for MTSI |R13| p. 187
8.1.1.4 Frame quality indication p. 188
8.1.1.5 Framing p. 188
8.1.1.6 Transcoding p. 188
8.1.1.7 Discontinuous transmission p. 188
8.1.1.8 Timing and sequence information p. 189
8.2 Interworking between IM CN subsystem and TDM-based CS network p. 189
8.3 Transcoding requirements p. 189
8.4 Diffserv code point requirements p. 189
8.5 DTMF handling |R7| p. 190
9 MGCF - IM-MGW Interaction p. 190
9.1 Overview p. 190
9.2 Mn signalling interactions p. 190
9.2.1 Network model p. 190
9.2.2 Basic IM CN subsystem originated session p. 191
9.2.2.1 BICC forward bearer establishment p. 191
9.2.2.1.1 IM-MGW selection p. 191
9.2.2.1.2 CS network side bearer establishment p. 191
9.2.2.1.3 IM CN subsystem side termination reservation p. 191
9.2.2.1.4 IM CN subsystem side session establishment p. 192
9.2.2.1.5 Through-connection p. 192
9.2.2.1.6 Codec handling p. 192
9.2.2.1.7 Failure handling in MGCF p. 193
9.2.2.1.8 Message sequence chart p. 193
9.2.2.2 BICC backward bearer establishment p. 194
9.2.2.2.1 IM-MGW selection p. 194
9.2.2.2.2 IM CN subsystem side termination reservation p. 195
9.2.2.2.3 IM CN subsystem side session establishment p. 195
9.2.2.2.4 CS network side bearer establishment p. 195
9.2.2.2.5 Through-connection p. 196
9.2.2.2.6 Codec handling p. 196
9.2.2.2.7 Failure handling in MGCF p. 196
9.2.2.2.8 Message sequence chart p. 196
9.2.2.3 ISUP p. 197
9.2.2.3.1 IM-MGW selection p. 197
9.2.2.3.2 IM CN subsystem side termination reservation p. 197
9.2.2.3.3 IM CN subsystem side session establishment p. 198
9.2.2.3.4 CS network side circuit reservation p. 198
9.2.2.3.5 Through-connection p. 198
9.2.2.3.6 Continuity check p. 199
9.2.2.3.7 Codec handling p. 199
9.2.2.3.8 Voice processing function p. 199
9.2.2.3.9 Failure handling in MGCF p. 199
9.2.2.3.10 Message sequence chart p. 199
9.2.3 Basic CS network originated session p. 201
9.2.3.1 BICC forward bearer establishment p. 201
9.2.3.1.1 IM-MGW selection p. 201
9.2.3.1.2 IM CN subsystem side termination reservation p. 201
9.2.3.1.3 IM CN subsystem side session establishment p. 201
9.2.3.1.4 CS network side bearer establishment p. 201
9.2.3.1.5 Called party alerting p. 202
9.2.3.1.6 Called party answer p. 202
9.2.3.1.7 Through-Connection p. 202
9.2.3.1.8 Codec handling p. 202
9.2.3.1.9 Failure handling in MGCF p. 202
9.2.3.1.10 Message sequence chart p. 202
9.2.3.2 BICC Backward bearer establishment p. 204
9.2.3.2.1 IM-MGW selection p. 204
9.2.3.2.2 CS network side bearer establishment p. 204
9.2.3.2.3 IM CN subsystem side termination reservation p. 204
9.2.3.2.4 IM CN subsystem side session establishment p. 205
9.2.3.2.5 Called party alerting p. 205
9.2.3.2.6 Called party answer p. 205
9.2.3.2.7 Through-Connection p. 205
9.2.3.2.8 Codec handling p. 205
9.2.3.2.9 Failure handling in MGCF p. 206
9.2.3.2.10 Message sequence chart p. 206
9.2.3.3 ISUP p. 208
9.2.3.3.1 IM-MGW selection p. 208
9.2.3.3.2 CS network side circuit reservation p. 208
9.2.3.3.3 IM CN subsystem side termination reservation p. 208
9.2.3.3.4 IM CN subsystem side session establishment p. 208
9.2.3.3.5 Called party alerting p. 209
9.2.3.3.6 Called party answer p. 209
9.2.3.3.7 Through-Connection p. 209
9.2.3.3.8 Continuity Check p. 209
9.2.3.3.9 Codec handling p. 209
9.2.3.3.10 Voice Processing function p. 210
9.2.3.3.11 Failure handling in MGCF p. 210
9.2.3.3.12 Message sequence chart p. 210
9.2.3.4 Handling of Forking p. 212
9.2.4 Session release initiated from IM CN subsystem side p. 218
9.2.4.1 BICC p. 218
9.2.4.1.1 Session release in the IM CN subsystem side p. 218
9.2.4.1.2 Session release in the CS network side p. 218
9.2.4.1.3 Message sequence chart p. 218
9.2.4.2 ISUP p. 219
9.2.5 Session release initiated from CS network side p. 219
9.2.5.1 BICC p. 219
9.2.5.1.1 Session release in the CS network side p. 219
9.2.5.1.2 Session release in the IM CN subsystem side p. 220
9.2.5.1.3 Message sequence chart p. 220
9.2.5.2 ISUP p. 220
9.2.6 Session release initiated by MGCF p. 221
9.2.6.1 BICC p. 221
9.2.6.1.1 Session release in the CS network side p. 221
9.2.6.1.2 Session release in the IM CN subsystem side p. 221
9.2.6.1.3 Message sequence chart p. 222
9.2.6.2 ISUP p. 222
9.2.7 Session release initiated by IM-MGW p. 223
9.2.7.1 BICC p. 223
9.2.7.1.1 Session release in the CS network side p. 223
9.2.7.1.2 Session release in the IM CN subsystem side p. 223
9.2.7.1.3 Message sequence chart p. 223
9.2.7.2 ISUP p. 224
9.2.8 Handling of RTP telephone events p. 225
9.2.8.1 Sending DTMF digits out-of-band to CS CN (BICC) p. 226
9.2.8.2 Sending and receiving DTMF digits inband to/from CS CN (ISUP or BICC) p. 228
9.2.8.3 Receiving DTMF digits out-of-band from CS CN (BICC) p. 229
9.2.9 Session hold initiated from IM CN subsystem p. 230
9.2.10 Session hold initiated from CS network p. 232
9.2.11 Explicit Congestion Notification Support |R10| p. 234
9.2.11.1 General p. 234
9.2.11.1a Incoming Call Interworking from SIP to ISUP/BICC at I-MGCF p. 234
9.2.11.1b Outgoing Call Interworking from ISUP/BICC to SIP at O-MGCF p. 235
9.2.11.1c Detection of ECN failures by IM-MGW p. 235
9.2.11.2 Message sequence chart p. 235
9.2.12 Interactive Connectivity Establishment Support |R12| p. 236
9.2.12.1 General p. 236
9.2.12.2 ICE lite p. 236
9.2.12.3 Full ICE p. 238
9.2.12.4 Procedures for Interactive Connectivity Establishment (ICE) p. 240
9.2.13 Codec Parameters Handling |R12| p. 242
9.2.13.1 Handling of common codec parameters p. 242
9.2.13.2 Handling of EVS speech codec parameters when interworking with a different codec p. 243
9.2.13.3 Handling of EVS speech codec parameters when the EVS codec is used end-to-end |R13| p. 252
9.2.14 SDP Capability Negotiation (SDPCapNeg) |R13| p. 260
9.2.15 Rate adaptation for media endpoints |R13| p. 260
9.3 Mn Signalling procedures p. 261
9.3.1 Procedures related to terminations towards the IM CN Subsystem p. 261
9.3.1.1 Reserve IMS connection point p. 262
9.3.1.2 Configure IMS resources p. 264
9.3.1.3 Reserve IMS Connection point and configure remote resources p. 265
9.3.1.4 Release IMS termination p. 268
9.3.1.5 Detect IMS RTP Tel event p. 268
9.3.1.6 Notify IMS RTP Tel event p. 268
9.3.1.7 Void
9.3.1.8 Send IMS RTP Tel event p. 268
9.3.1.9 Stop IMS RTP Tel event p. 268
9.3.1.10 Termination heartbeat indication p. 269
9.3.1.11 IMS Bearer Released p. 269
9.3.1.12 End IMS RTP Tel event p. 269
9.3.1.13 IMS Send Tone p. 269
9.3.1.14 IMS Stop Tone p. 269
9.3.1.15 IMS Tone Completed |R7| p. 269
9.3.1.16 ECN Failure Indication |R10| p. 270
9.3.1.17 ICE Connectivity Check Result Notification |R12| p. 270
9.3.1.18 ICE New Peer Reflexive Candidate Notification |R12| p. 271
9.3.2 Procedures related to a termination towards an ISUP network p. 271
9.3.2.1 Reserve TDM circuit p. 271
9.3.2.2 Change TDM through-connection p. 272
9.3.2.3 Activate TDM voice-processing function p. 272
9.3.2.4 Send TDM tone p. 272
9.3.2.5 Stop TDM tone p. 272
9.3.2.6 Play TDM announcement p. 272
9.3.2.7 TDM announcement completed p. 272
9.3.2.8 Stop TDM announcement p. 272
9.3.2.9 Continuity check p. 272
9.3.2.10 Continuity check verify p. 273
9.3.2.11 Continuity check response p. 273
9.3.2.12 Release TDM termination p. 274
9.3.2.13 Termination Out-of-Service p. 274
9.3.2.14 Termination heartbeat indication p. 274
9.3.2.15 Bearer Released p. 274
9.3.2.16 TDM tone completed |R7| p. 274
9.3.3 Procedures related to a termination towards a BICC network p. 275
9.3.4 Non-call related procedures p. 275
9.3.5 Multiple IP Realms |R7| p. 276
9.4 Multimedia Priority Service (MPS) Support |R11| p. 277
A Void
