Content for TS 29.235 Word version: 18.0.0
7 Interworking between a SIP-I based circuit-switched core network and the IP Multimedia (IM) Core Network (CN) Subsystem
7.1 Reference Model
7.2 Signalling Interworking of a Call from the IP Multimedia Subsystem towards the SIP-I based circuit-switched core network
7.3 Signalling Interworking of a Call from SIP-I based circuit-switched core network towards the IP Multimedia Subsystem
7.4 DMTF Signalling Interworking applicable for all Calls between an IP Multimedia CN Subsystem and a SIP-I based circuit-switched core network
7.5 User Plane Interworking
7.6 Example Call flows
7.7 CS CN Supplementary Services and IMS Supplementary Services
7.8 MGCF - IM-MGW Interaction
7 Interworking between a SIP-I based circuit-switched core network and the IP Multimedia (IM) Core Network (CN) Subsystem p. 47
7.1 Reference Model p. 47
7.1.1 General |R9| p. 47
7.1.2 Signalling interactions between network entities in the control plane |R9| p. 47
7.2 Signalling Interworking of a Call from the IP Multimedia Subsystem towards the SIP-I based circuit-switched core network p. 48
7.2.1 General p. 48
7.2.2 Exceptions from forwarding received SIP messages p. 49
7.2.3 Sending SIP INVITE request p. 49
7.2.4 Updating Precondition Information p. 50
7.2.5 SDP Codec Negotiation p. 50
7.2.6 MGW Selection p. 50
7.2.7 Autonomous Release p. 50
7.2.8 Further setting of SIP header values p. 50
7.3 Signalling Interworking of a Call from SIP-I based circuit-switched core network towards the IP Multimedia Subsystem p. 52
7.3.1 General p. 52
7.3.2 Exceptions from forwarding received SIP messages p. 52
7.3.3 Sending SIP INVITE request p. 53
7.3.4 Updating Precondition Information p. 53
7.3.5 Receipt of SIP redirect (3xx) response p. 54
7.3.6 SDP Codec Negotiation p. 54
7.3.7 MGW Selection p. 54
7.3.8 Autonomous Release p. 55
7.3.9 Handling of forked SIP Responses p. 55
7.3.9.1 SIP Dialogues p. 55
7.3.9.2 Reception of non-100 provisional Responses to initial INVITE p. 55
7.3.9.3 Reception of final Responses to initial INVITE p. 55
7.3.10 Further setting of SIP header values p. 56
7.4 DMTF Signalling Interworking applicable for all Calls between an IP Multimedia CN Subsystem and a SIP-I based circuit-switched core network p. 57
7.5 User Plane Interworking p. 57
7.5.1 General p. 57
7.5.2 DTMF Interworking p. 58
7.6 Example Call flows p. 58
7.6.1 General p. 58
7.6.2 Incoming Call flows p. 58
7.6.2.1 Successful Call Establishment and Call Release p. 58
7.6.2.2 Autonomous Release at MGCF p. 60
7.6.3 Outgoing Call flows p. 61
7.7 CS CN Supplementary Services and IMS Supplementary Services p. 67
7.7.0 General p. 67
7.7.1 Number Identification Services p. 67
7.7.1.1 CS CN Supplementary Service - Calling Line Identification Presentation/Restriction (CLIP/CLIR) p. 67
7.7.1.2 CS CN Supplementary Service - Connected Line Identification Presentation /Restriction (COLP/COLR) p. 67
7.7.1.3 IMS Supplementary Service - Originating Identification Presentation (OIP) and Originating Identification Restriction (OIR) p. 67
7.7.1.4 IMS Supplementary Service - Terminating Identification Presentation (TIP) and Terminating Identification Restriction (TIR) p. 67
7.7.1.5 CS CN Supplementary Service - Direct Dialling In p. 67
7.7.1.6 CS CN Supplementary Service - Malicious Call Identification p. 68
7.7.1.7 IMS Supplementary Service - Malicious Communication Identification (MCID) p. 68
7.7.1.8 CS CN Supplementary Service - Subaddressing p. 68
7.7.2 Diversion Services p. 68
7.7.2.1 CS CN Supplementary Service - Call Forwarding Services (CFU, CFB, CFNRy, CFNRc) p. 68
7.7.2.2 CS CN Supplementary Service - Call Deflection (CD) p. 68
7.7.2.3 IMS Supplementary Service - Communication Diversion (CDIV) p. 68
7.7.3 Waiting Services p. 68
7.7.3.1 CS CN Supplementary Service - Call Waiting p. 68
7.7.3.2 IMS Supplementary Service - Communication Waiting (CW) p. 68
7.7.4 Hold Services p. 68
7.7.4.1 CS CN Supplementary Service - Call Hold p. 68
7.7.4.2 IMS Supplementary Service - Communication Hold (HOLD) p. 69
7.7.5 Multiparty Services p. 69
7.7.5.1 CS CN Supplementary Services - Conference Calling (CONF) and Three-Party (3PTY) p. 69
7.7.5.2 IMS Supplementary Service - Conference (CONF) p. 69
7.7.6 Closed User Group Service p. 69
7.7.6.1 CS CN Supplementary Service - Closed User Group (CUG) p. 69
7.7.6.2 IMS Supplementary Service - Closed User Group (CUG) p. 69
7.7.7 Charging Services p. 69
7.7.7.1 CS CN Supplementary Service - Advice of Charge (AoC) p. 69
7.7.7.2 IMS Supplementary Service - Advice of Charge (AOC) p. 69
7.7.7.3 CS CN Supplementary Service - International Telecommunication Charge Card (ITCC) p. 69
7.7.7.4 CS CN Supplementary Service - Reverse Charging (REV) p. 69
7.7.8 Barring Services p. 70
7.7.8.1 CS CN Supplementary Service - Barring of Outgoing Calls p. 70
7.7.8.2 CS CN Supplementary Service - Barring of Incoming Calls p. 70
7.7.8.3 CS CN Supplementary Service - Anonymous Call Rejection (ACR) p. 70
7.7.8.4 IMS Supplementary Service - Communication Barring (CB) p. 70
7.7.8.5 IMS Supplementary Service - Anonymous Communication Rejection (ACR) p. 70
7.7.9 Transfer Services p. 70
7.7.9.1 CS CN Supplementary Service - Explicit Call Transfer (ECT) p. 70
7.7.9.2 IMS Supplementary Service - Explicit CommunicationTransfer (ECT) p. 70
7.7.10 Call Completion Services p. 71
7.7.10.1 CS CN Supplementary Service - Completion of Calls to Busy Subscriber (CCBS) p. 71
7.7.10.2 CS CN Supplementary Service - Completion of Calls on No Reply (CCNR) p. 71
7.7.10.3 IMS Supplementary Service - Completion of Communications to Busy Subscriber (CCBS) and Completion of Communication on No Reply (CCNR) p. 71
7.7.11 Miscellaneous Services p. 71
7.7.11.1 CS CN Supplementary Service - Multi-Level Precedence and Pre-emption (MLPP) p. 71
7.7.11.2 CS CN Supplementary Service - Multiple Subscriber Profile (MSP) p. 71
7.7.11.3 CS CN Supplementary Service - Multicall p. 71
7.7.11.4 CS CN Supplementary Service - Calling Name Presentation p. 71
7.7.11.5 CS CN Supplementary Service - User-to-User Signalling (UUS) p. 71
7.7.11.6 IMS Supplementary Service - Message Waiting Indication (MWI) p. 71
7.7.11.7 CS CN Supplementary Service - Global Virtual Network Service (GVNS) p. 71
7.7.11.8 CS CN Supplementary Service - Terminal Portability (TP) p. 72
7.7.12 Customized Alerting Tones Services |R10| p. 72
7.7.12.1 CS CN Supplementary Service - Customized Alerting Tones (CAT) p. 72
7.7.12.2 IMS Supplementary Service - Customized Alerting Tones (CAT) for early session model p. 72
7.7.12.3 IMS Supplementary Service - Customized Alerting Tones (CAT) for forking model p. 72
7.7.12.4 IMS Supplementary Service - Customized Alerting Tones (CAT) for gateway model p. 72
7.8 MGCF - IM-MGW Interaction |R9| p. 72
