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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 11.19.0 Release 11)
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3GPP TS 29.163 version 11.19.0 Release 11 1 ETSI TS 129 163 V11.19.0 (2019-01)
Reference
RTS/TSGC-0329163vbj0
Keywords
GSM,LTE,UMTS
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ETSI
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3GPP TS 29.163 version 11.19.0 Release 11 2 ETSI TS 129 163 V11.19.0 (2019-01)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
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Foreword
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or
GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables.
The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
.
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
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3GPP TS 29.163 version 11.19.0 Release 11 3 ETSI TS 129 163 V11.19.0 (2019-01)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 14
1 Scope . 15
2 References . 15
3 Definitions and abbreviations . 20
3.1 Definitions . 20
3.2 Abbreviations . 21
4 General . 23
4.1 General interworking overview . 23
5 Network characteristics . 23
5.1 Key characteristics of ISUP/BICC based CS networks . 23
5.2 Key characteristics of IM CN subsystem . 23
6 Interworking with CS networks . 23
6.1 Interworking reference model . 23
6.1.1 Interworking reference points and interfaces . 24
6.1.2 Interworking functional entities . 24
6.1.2.1 Signalling Gateway Function (SGW) . 24
6.1.2.2 Media Gateway Control Function (MGCF) . 24
6.1.2.3 IP Multimedia - Media Gateway Function (IM-MGW) . 24
6.2 Control plane interworking model . 25
6.3 User plane interworking model . 25
7 Control plane interworking . 25
7.1 General . 25
7.2 Interworking between CS networks supporting ISUP and the IM CN subsystem . 26
7.2.1 Services performed by network entities in the control plane . 26
7.2.1.1 Services performed by the SS7 signalling function . 26
7.2.1.2 Services of the SGW . 26
7.2.1.3 Services of the MGCF . 27
7.2.1.4 Services of the SIP signalling function . 27
7.2.2 Signalling interactions between network entities in the control plane . 27
7.2.2.1 Signalling between the SS7 signalling function and MGCF . 27
7.2.2.1.1 Signalling from MGCF to SS7 signalling function . 27
7.2.2.1.2 Signalling from SS7 signalling function to MGCF . 27
7.2.2.1.3 Services offered by SCTP and M3UA . 27
7.2.2.2 Signalling between the MGCF and SIP signalling function. 27
7.2.3 SIP-ISUP protocol interworking . 27
7.2.3.1 Incoming call interworking from SIP to ISUP at I-MGCF . 28
7.2.3.1.1 Sending of IAM . 28
7.2.3.1.2 Coding of the IAM . 29
7.2.3.1.2A Coding of the IAM when Number Portability is supported . 43
7.2.3.1.2B Coding of the IAM for Carrier Routeing . 45
7.2.3.1.3 Sending of COT . 45
7.2.3.1.3A Sending of SAM . 46
7.2.3.1.4 Sending of 180 ringing . 47
7.2.3.1.4A Sending of 183 Session Progress for early media scenarios . 50
7.2.3.1.4B Sending of 181Call is being forwarded . 52
7.2.3.1.4C Sending of 183 Session Progress for overlap signalling using the in-dialog method . 53
7.2.3.1.4D Sending of 183 Session Progress to carry ISUP Cause . 53
7.2.3.1.5 Sending of the 200 OK (INVITE) . 54
7.2.3.1.6 Sending of the Release message (REL) . 56
ETSI
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3GPP TS 29.163 version 11.19.0 Release 11 4 ETSI TS 129 163 V11.19.0 (2019-01)
7.2.3.1.7 Coding of the REL. 56
7.2.3.1.8 Receipt of the Release Message . 57
7.2.3.1.9 Receipt of RSC, GRS or CGB (H/W oriented) . 60
7.2.3.1.9a Receipt of REFER . 61
7.2.3.1.10 Autonomous Release at I-MGCF . 61
7.2.3.1.11 Internal through connection of the bearer path . 62
7.2.3.2 Outgoing Call Interworking from ISUP to SIP at O-MGCF . 62
7.2.3.2.1 Sending of INVITE . 62
7.2.3.2.1a Sending of INVITE without determining the end of address signalling . 64
7.2.3.2.2 Coding of the INVITE . 67
7.2.3.2.2A Coding of the INVITE when Number Portability is supported . 81
7.2.3.2.2B Coding of the INVITE for Carrier Routeing . 83
7.2.3.2.2C Coding of INVITE with instance-id in form of IMEI URN . 83
7.2.3.2.3 Receipt of CONTINUITY . 84
7.2.3.2.4 Sending of ACM and awaiting answer indication . 84
7.2.3.2.5 Coding of the ACM . 87
7.2.3.2.6 Sending of the Call Progress message (CPG) . 90
7.2.3.2.7 Coding of the CPG . 92
7.2.3.2.7a Receipt of 200 OK(INVITE) . 93
7.2.3.2.7b Internal through connection of the bearer path . 93
7.2.3.2.8 Sending of the Answer Message (ANM) . 93
7.2.3.2.9 Coding of the ANM . 94
7.2.3.2.10 Sending of the Connect message (CON) . 96
7.2.3.2.11 Coding of the CON . 96
7.2.3.2.11A Receipt of a reINVITE request . 96
7.2.3.2.12 Receipt of Status Codes 4xx, 5xx or 6xx . 96
7.2.3 2.13 Receipt of a BYE . 98
7.2.3.2.14 Receipt of the Release Message . 98
7.2.3.2.15 Receipt of RSC, GRS or CGB (H/W oriented) . 98
7.2.3.2.16 Autonomous Release at O-MGCF . 99
7.2.3.2.17 Special handling of 580 precondition failure received in response to either an INVITE or
UPDATE . 99
7.2.3.2.18 Sending of CANCEL . 99
7.2.3.2.19 Receipt of SIP redirect (3xx) response . 100
7.2.3.2.20 Sending of INFO for overlap signalling using the in-dialog method . 100
7.2.3.3 Timers . 101
7.3 Interworking between CS networks supporting BICC and the IM CN subsystem . 101
7.3.1 Services performed by network entities in the control plane . 102
7.3.2 Signalling interactions between network entities in the control plane . 102
7.3.2.1 Signalling between the SS7 signalling function and MGCF . 102
7.3.2.1.1 Signalling from MGCF to SS7 signalling function . 102
7.3.2.1.2 Signalling from SS7 signalling function to MGCF . 102
7.3.2.1.3 Services offered by STC, SCTP and M3UA . 103
7.3.2.2 Signalling between the MGCF and SIP signalling function. 103
7.3.3 SIP-BICC protocol interworking . 103
7.3.3.1 Incoming call interworking from SIP to BICC at I-MGCF . 103
7.3.3.1.1 Sending of IAM . 103
7.3.3.1.2 Coding of IAM . 103
7.3.3.1.2A Coding of the IAM when Number Portability is supported . 104
7.3.3.1.2B Coding of the IAM for Carrier Routeing . 104
7.3.3.1.3 Sending of COT . 104
7.3.3.1.3A Sending of SAM . 104
7.3.3.1.4 Sending of 180 Ringing . 105
7.3.3.1.4A Sending of 183 Session Progress for early media scenarios . 105
7.3.3.1.4B Sending of 181 Call is being forwarded . 105
7.3.3.1.4C Sending of 183 Session Progress for overlap signalling using the in-dialog method . 105
7.3.3.1.4D Sending of 183 Session Progress to carry ISUP Cause . 105
7.3.3.1.5 Sending of the 200 OK (INVITE) . 105
7.3.3.1.6 Sending of the Release message (REL) . 105
7.3.3.1.7 Coding of the REL. 105
7.3.3.1.8 Receipt of the Release Message . 105
7.3.3.1.9 Receipt of RSC, GRS or CGB (H/W oriented) . 105
ETSI
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3GPP TS 29.163 version 11.19.0 Release 11 5 ETSI TS 129 163 V11.19.0 (2019-01)
7.3.3.1.9a Receipt of REFER . 105
7.3.3.1.9b Autonomous Release at I-MGCF . 105
7.3.3.1.10 Internal through connection of the bearer path . 105
7.3.3.1.11 Out of Band DTMF . 105
7.3.3.2 Outgoing Call Interworking from BICC to SIP at O-MGCF . 106
7.3.3.2.1 Sending of INVITE . 106
7.3.3.2.1a Sending of INVITE without determining the end of address signalling . 106
7.3.3.2.2 Coding of the INVITE . 106
7.3.3.2.2A Coding of the INVITE when number portability is supported . 107
7.3.3.2.2B Coding of the INVITE for Carrier Routeing . 107
7.3.3.2.2C Coding of INVITE with instance-id in form of IMEI URN . 107
7.3.3.2.3 Sending of UPDATE . 107
7.3.3.2.4 Sending of ACM and Awaiting Answer indication . 108
7.3.3.2.5 Coding of the ACM . 108
7.3.3.2.6 Sending of the Call Progress message (CPG) . 108
7.3.3.2.7 Coding of the CPG . 108
7.3.3.2.7a Receipt of 200 OK (INVITE) . 108
7.3.3.2.7b Internal through connection of the bearer path . 108
7.3.3.2.8 Sending of the Answer Message (ANM) . 108
7.3.3.2.9 Coding of the ANM . 108
7.3.3.2.10 Sending of the Connect message (CON) . 109
7.3.3.2.11 Coding of the CON . 109
7.3.3.2.11A Receipt of re-INVITE requests . 109
7.3.3.2.12 Receipt of Status Codes 4xx, 5xx or 6xx . 109
7.3 3.2.13 Receipt of a BYE . 109
7.3.3.2.14 Receipt of the Release Message . 109
7.3.3.2.15 Receipt of RSC, GRS or CGB (H/W oriented) . 109
7.3.3.2.16 Out of Band DTMF . 109
7.3.3.2.17 Sending of CANCEL . 109
7.3.3.2.18 Autonomous Release at O-MGCF . 109
7.3.3.2.19 Special handling of 580 precondition failure received in response to either an INVITE or
UPDATE . 109
7.3.3.2.20 Receipt of SIP redirect (3xx) response . 109
7.3.3.2.21 Sending of INFO for overlap signalling using the in-dialog method . 110
7.3.3.3 Timers . 110
7.4 Supplementary Services . 110
7.4.1 Calling line identification presentation/restriction (CLIP/CLIR) . 110
7.4.2 Connected line presentation and restriction (COLP/COLR) . 110
7.4.2.0 General . 110
7.4.2.1 Incoming Call Interworking from SIP to BICC/ISUP at the I-MGCF . 110
7.4.2.1.1 INVITE to IAM interworking (SIP to ISUP/BICC calls) . 110
7.4.2.1.2 ANM/CON to 200 OK (INVITE) . 110
7.4.2.2 Outgoing Call Interworking from BICC/ISUP to SIP at O-MGCF . 111
7.4.2.2.1 IAM to INVITE interworking (ISUP to SIP calls) . 111
7.4.2.2.2 1XX to ANM or CON interworking . 111
7.4.2.2.3 200 OK (INVITE) to ANM/CON interworking . 111
7.4.3 Direct Dialling In (DDI) . 112
7.4.4 Malicious call identification . 112
7.4.5 Subaddressing (SUB) . 113
7.4.5.1 General . 113
7.4.5.2 Interworking at I-MGCF . 113
7.4.5.3 Interworking at O-MGCF . 114
7.4.6 Call Forwarding Busy (CFB)/ Call Forwarding No Reply (CFNR) / Call Forwarding Unconditional
(CFU) / Call Deflection (CD) . 115
7.4.6.1 General .
...