ETSI TS 129 163 V14.13.0 (2019-10)

Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Interworking between the IP Multimedia (IM) Core Network (CN) subsystem and Circuit Switched (CS) networks (3GPP TS 29.163 version 14.13.0 Release 14)

RTS/TSGC-0329163ved0

General Information

• Status: Published
• Publication Date: 09-Oct-2019
• Technical Committee: 3GPP CT 3 - Interworking with external networks (formely CN3)
• Current Stage: 12 - Completion
• Completion Date: 10-Oct-2019

Standards Content (Sample)

ETSI TS 129 163 V14.13.0 (2019-10)






TECHNICAL SPECIFICATION
Digital cellular telecommunications system (Phase 2+) (GSM);
Universal Mobile Telecommunications System (UMTS);
LTE;
Interworking between the IP Multimedia (IM) Core Network (CN)
subsystem and Circuit Switched (CS) networks
(3GPP TS 29.163 version 14.13.0 Release 14)

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3GPP TS 29.163 version 14.13.0 Release 14 1 ETSI TS 129 163 V14.13.0 (2019-10)



Reference
RTS/TSGC-0329163ved0
Keywords
GSM,LTE,UMTS
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3GPP TS 29.163 version 14.13.0 Release 14 2 ETSI TS 129 163 V14.13.0 (2019-10)
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ETSI

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3GPP TS 29.163 version 14.13.0 Release 14 3 ETSI TS 129 163 V14.13.0 (2019-10)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 17
1 Scope . 18
2 References . 18
3 Definitions and abbreviations . 24
3.1 Definitions . 24
3.2 Abbreviations . 25
4 General . 27
4.1 General interworking overview . 27
5 Network characteristics . 27
5.1 Key characteristics of ISUP/BICC based CS networks . 27
5.2 Key characteristics of IM CN subsystem . 27
6 Interworking with CS networks . 27
6.1 Interworking reference model . 27
6.1.1 Interworking reference points and interfaces . 28
6.1.2 Interworking functional entities . 28
6.1.2.1 Signalling Gateway Function (SGW) . 28
6.1.2.2 Media Gateway Control Function (MGCF) . 28
6.1.2.3 IP Multimedia - Media Gateway Function (IM-MGW) . 28
6.2 Control plane interworking model . 29
6.3 User plane interworking model . 29
7 Control plane interworking . 29
7.1 General . 29
7.2 Interworking between CS networks supporting ISUP and the IM CN subsystem . 30
7.2.1 Services performed by network entities in the control plane . 30
7.2.1.1 Services performed by the SS7 signalling function . 30
7.2.1.2 Services of the SGW . 30
7.2.1.3 Services of the MGCF . 31
7.2.1.4 Services of the SIP signalling function . 31
7.2.2 Signalling interactions between network entities in the control plane . 31
7.2.2.1 Signalling between the SS7 signalling function and MGCF . 31
7.2.2.1.1 Signalling from MGCF to SS7 signalling function . 31
7.2.2.1.2 Signalling from SS7 signalling function to MGCF . 31
7.2.2.1.3 Services offered by SCTP and M3UA . 31
7.2.2.1.3.1 Services offered by SCTP . 31
7.2.2.1.3.2 Services offered by M3UA . 31
7.2.2.2 Signalling between the MGCF and SIP signalling function. 32
7.2.3 SIP-ISUP protocol interworking . 32
7.2.3.1 Incoming call interworking from SIP to ISUP at I-MGCF . 32
7.2.3.1.1 Sending of IAM . 32
7.2.3.1.2 Coding of the IAM . 33
7.2.3.1.2.0 General . 33
7.2.3.1.2.1 Called party number . 33
7.2.3.1.2.2 Nature of connection indicators . 34
7.2.3.1.2.3 Forward call indicators . 35
7.2.3.1.2.4 Calling party's category . 36
7.2.3.1.2.4A Originating Line Information . 36
7.2.3.1.2.5 Transmission medium requirement . 36
7.2.3.1.2.5a Transmission medium requirement prime and USI prime (optional) . 38
7.2.3.1.2.6 Calling party number . 40
ETSI

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3GPP TS 29.163 version 14.13.0 Release 14 4 ETSI TS 129 163 V14.13.0 (2019-10)
7.2.3.1.2.7 Generic number . 45
7.2.3.1.2.8 User service information . 45
7.2.3.1.2.9 Hop Counter (National option) . 45
7.2.3.1.2.10 Progress Indicator . 46
7.2.3.1.2.11 Location Number . 46
7.2.3.1.2.12 Support of ICS call . 48
7.2.3.1.2.13 UID capability indicators (National option) . 48
7.2.3.1.2.14 Called IN number and original called IN number (optional) . 49
7.2.3.1.2A Coding of the IAM when Number Portability is supported . 49
7.2.3.1.2A.1 Coding of the IAM when a Number Portability Routing Number is available . 49
7.2.3.1.2A.1.1 Separate Directory Number Addressing Method . 50
7.2.3.1.2A.1.2 Concatenated Addressing Method . 51
7.2.3.1.2A.1.3 Separate Network Routing Number Addressing Method . 51
7.2.3.1.2A.2 Number Portability Forward Information . 52
7.2.3.1.2B Coding of the IAM for Carrier Routeing . 52
7.2.3.1.2B.1 Coding of the IAM when a Carrier Identification Code (CIC) is present . 52
7.2.3.1.2B.2 Void . 52
7.2.3.1.3 Sending of COT . 52
7.2.3.1.3A Sending of SAM . 53
7.2.3.1.3A.1 General . 53
7.2.3.1.3A.2 Additional digits received in in-dialog SIP INFO requests . 53
7.2.3.1.3A.3 Additional digits received in SIP INVITE requests . 53
7.2.3.1.4 Sending of 180 ringing . 54
7.2.3.1.4.0 General . 54
7.2.3.1.4.0a PSTN XML body . 55
7.2.3.1.4.0b Fallback by I-MGCF . 56
7.2.3.1.4.1 Fallback in a succeeding network: Transmission Medium Used parameter (TMU)
received . 57
7.2.3.1.4A Sending of 183 Session Progress for early media scenarios . 57
7.2.3.1.4B Sending of 181Call is being forwarded . 60
7.2.3.1.4C Sending of 183 Session Progress for overlap signalling using the in-dialog method . 61
7.2.3.1.4D Sending of 183 Session Progress to carry ISUP Cause . 61
7.2.3.1.4E Sending of 183 Session Progress for ICS call . 61
7.2.3.1.5 Sending of the 200 OK (INVITE) . 62
7.2.3.1.6 Sending of the Release message (REL) . 64
7.2.3.1.7 Coding of the REL. 64
7.2.3.1.8 Receipt of the Release Message . 66
7.2.3.1.9 Receipt of RSC, GRS or CGB (H/W oriented) . 70
7.2.3.1.9a Receipt of REFER . 70
7.2.3.1.10 Autonomous Release at I-MGCF . 71
7.2.3.1.11 Internal through connection of the bearer path . 71
7.2.3.2 Outgoing Call Interworking from ISUP to SIP at O-MGCF . 71
7.2.3.2.1 Sending of INVITE . 71
7.2.3.2.1.1 General . 71
7.2.3.2.1.2 Interaction with continuity check . 72
7.2.3.2.1.3 IAM without calling party number . 72
7.2.3.2.1.4 Terminating overlap signalling at MGCF . 73
7.2.3.2.1.5 Fallback (optional) . 73
7.2.3.2.1a Sending of INVITE without determining the end of address signalling . 74
7.2.3.2.1a.1 General . 74
7.2.3.2.1a.2 Additional digits sent with in-dialog overlap method . 74
7.2.3.2.1a.3 Additional digits sent using the multiple INVITEs overlap method . 75
7.2.3.2.2 Coding of the INVITE . 76
7.2.3.2.2.0 Overview . 76
7.2.3.2.2.1 Request-URI and To header field . 76
7.2.3.2.2.2 SDP Media Description . 77
7.2.3.2.2.3 P-Asserted-Identity, From and Privacy header fields . 81
7.2.3.2.2.3A "cpc" URI Parameter in P-Asserted-Identity Header . 86
7.2.3.2.2.3B "oli" URI Parameter in P-Asserted-Identity Header . 86
7.2.3.2.2.4 Max Forwards header . 87
7.2.3.2.2.5 IMS Communication Service Identifier . 87
7.2.3.2.2.6 P-Early-Media header field . 87
ETSI

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3GPP TS 29.163 version 14.13.0 Release 14 5 ETSI TS 129 163 V14.13.0 (2019-10)
7.2.3.2.2.7 PSTN XML elements . 87
7.2.3.2.2.8 Progress indicator . 88
7.2.3.2.2.9 P-Access-Network-Info . 89
7.2.3.2.2A Coding of the INVITE when Number Portability is supported . 89
7.2.3.2.2A.1 Request-URI and To header field . 89
7.2.3.2.2A.1.1 Separate Directory Number Addressing Method . 90
7.2.3.2.2A.1.2 Concatenated Addressing Method . 90
7.2.3.2.2A.1.3 Separate Network Routing Number Addressing Method . 91
7.2.3.2.2B Coding of the INVITE for Carrier Routeing . 91
7.2.3.2.2B.1 Mapping of "cic" in Request-URI . 91
7.2.3.2.2B.2 Void . 91
7.2.3.2.2C Coding of INVITE with instance-id in form of IMEI URN . 91
7.2.3.2.2.10 PSAP Call-back indication . 92
7.2.3.2.2.11 History-Info header field (optional) . 92
7.2.3.2.3 Receipt of CONTINUITY . 92
7.2.3.2.4 Sending of ACM and awaiting answer indication . 93
7.2.3.2.5 Coding of the ACM . 95
7.2.3.2.5.0 General . 95
7.2.3.2.5.1 Backward call indicators . 95
7.2.3.2.5.2 Optional Backward call indicators . 97
7.2.3.2.5.3 Access Transport Parameter, Transmission medium used parameter . 97
7.2.3.2.5.4 Progress indicator . 98
7.2.3.2.5.5 Cause Value . 98
7.2.3.2.6 Sending of the Call Progress message (CPG) . 98
7.2.3.2.6.0 General . 98
7.2.3.2.6.1 Handling of the progress indicator . 100
7.2.3.2.7 Coding of the CPG . 100
7.2.3.2.7.0 General . 100
7.2.3.2.7.1 Event information . 101
7.2.3.2.7.2 Access Transport Parameter. 101
7.2.3.2.7.3 Void . 101
7.2.3.2.7.4 Handling of Backward Call indicators . 101
7.2.3.2.7.5 Optional Backward call indicators . 101
7.2.3.2.7.6 Cause Value . 101
7.2.3.2.7a Receipt of 200 OK(INVITE) . 102
7.2.3.2.7b Internal through connection of the bearer path . 102
7.2.3.2.8 Sending of the Answer Message (ANM) . 102
7.2.3.2.9 Coding of the ANM . 102
7.2.3.2.9.1 Backwards Call Indicators . 102
7.2.3.2.9.2 Access Transport Parameter. 102
7.2.3.2.9.3 Transmission Medium Used parameter (TMU) . 103
7.2.3.2.10 Sending of the Connect message (CON) . 104
7.2.3.2.11 Coding of the CON . 104
7.2.3.2.11.0 General . 104
7.2.3.2.11.1 Backward call indicators . 104
7.2.3.2.11.2 Access Transport Parameter. 104
7.2.3.2.11.3 Transmission medium used parameter . 104
7.2.3.2.11A Receipt of a reINVITE request . 104
7.2.3.2.12 Receipt of Status Codes 4xx, 5xx or 6xx . 104
7.2.3.2.12.1 Special handling of 404 Not Found and 484 Address Incomplete responses after sending

of INVITE without determining the end of address signalling . 107
7.2.3 2.13 Receipt of a BYE . 107
7.2.3.2.14 Receipt of the Release Message . 107
7.2.3.2.15 Receipt of RSC, GRS or CGB (H/W oriented) . 107
7.2.3.2.16 Autonomous Release at O-MGCF . 108
7.2.3.2.17 Special handling of
...