ETSI TS 129 292 V14.8.0 (2019-10)

Universal Mobile Telecommunications System (UMTS); LTE; Interworking between the IP Multimedia (IM) Core Network (CN) subsystem (IMS) and MSC Server for IMS Centralized Services (ICS) (3GPP TS 29.292 version 14.8.0 Release 14)

RTS/TSGC-0329292ve80

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)

TECHNICAL SPECIFICATION
Universal Mobile Telecommunications System (UMTS);
LTE;
Interworking between the IP Multimedia (IM)
Core Network (CN) subsystem (IMS)
and MSC Server for IMS Centralized Services (ICS)
(3GPP TS 29.292 version 14.8.0 Release 14)

3GPP TS 29.292 version 14.8.0 Release 14 1 ETSI TS 129 292 V14.8.0 (2019-10)

Reference
RTS/TSGC-0329292ve80
Keywords
LTE,UMTS
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ETSI
3GPP TS 29.292 version 14.8.0 Release 14 2 ETSI TS 129 292 V14.8.0 (2019-10)
Intellectual Property Rights
Essential patents
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pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
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Legal Notice
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
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Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
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ETSI
3GPP TS 29.292 version 14.8.0 Release 14 3 ETSI TS 129 292 V14.8.0 (2019-10)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 7
1 Scope . 8
2 References . 8
3 Definitions and abbreviations . 11
3.1 Definitions . 11
3.2 Abbreviations . 11
4 Interworking overview . 12
4.1 Interworking reference model . 12
4.2 Interworking reference points and interfaces . 12
4.3 Interworking functional entities . 13
4.3.1 MSC Server enhanced for ICS . 13
4.3.2 Circuit Switched Media Gateway Function (CS-MGW) . 13
4.4 Control plane interworking. 13
4.5 User plane interworking . 13
5 Control plane procedures and interworking . 13
5.1 General . 13
5.2 IMS registration procedures interworking . 14
5.2.1 Initial registration . 14
5.2.2 Reregistration . 14
5.2.3 MSC Server initiated deregistration . 14
5.3 Interworking of mobile originating call setup from NAS signalling to SIP . 15
5.3.1 General . 15
5.3.2 Receipt of a setup message . 15
5.3.3 Sending of INVITE . 15
5.3.3.1 General . 15
5.3.3.2 Coding of INVITE . 15
5.3.3.3 Coding of the SDP offer . 17
5.3.3.4 Actions on the SDP answer . 17
5.3.4 Sending of ALERTING . 17
5.3.4a Sending of PROGRESS . 17
5.3.4b Through-Connecting early media from IMS . 18
5.3.5 Applying ringback tone . 18
5.3.6 Receipt of 200 OK (INVITE) . 18
5.3.7 Receipt of status-codes 3xx . 18
5.3.8 Receipt of SIP status-codes 4xx, 5xx or 6xx. 18
5.3.9 Receipt of DISCONNECT . 24
5.3.10 Restoration procedures . 24
5.3.11 Autonomous clearing initiated by the MSC Server . 25
5.4 Interworking of mobile terminating call setup from SIP to NAS signalling . 25
5.4.1 General . 25
5.4.2 Receipt of initial INVITE . 25
5.4.3 Sending of SETUP . 26
5.4.4 Receipt of CALL CONFIRMED . 29
5.4.5 Bearer establishment . 30
5.4.5.1 Network side bearer establishment . 30
5.4.5.2 Access bearer assignment . 30
5.4.5.3 Transcoding . 30
5.4.6 Receipt of ALERTING . 30
5.4.7 Applying early media. 30
5.4.8 Call rejection or abandonment . 31
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5.4.8.1 Receipt of RELEASE COMPLETE or DISCONNECT . 31
5.4.8.2 Receipt of CANCEL or BYE . 34
5.4.9 Receipt of CONNECT . 34
5.4.10 Call failure procedures . 34
5.4.11 Autonomous clearing initiated by the MSC Server . 34
5.5 Interworking of established call clearing between NAS signalling and SIP . 35
5.5.1 General . 35
5.5.2 Clearing initiated by the mobile . 35
5.5.3 Clearing initiated by the IM CN subsystem . 35
5.5.4 Autonomous clearing initiated by the MSC Server . 35
5.6 Supplementary Services invocation . 35
5.6.1 Originating identification presentation/restriction (OIP/OIR) . 35
5.6.2 Terminating identification presentation/restriction (TIP/TIR) . 36
5.6.2.1 Terminating identification presentation (TIP) . 36
5.6.2.2 Terminating identification restriction (TIR) . 36
5.6.3 Communication Hold (HOLD) . 37
5.6.3.1 HOLD initiated via NAS signalling . 37
5.6.3.1.1 Hold . 37
5.6.3.1.2 Resume . 37
5.6.3.2 HOLD initiated via SIP signalling . 37
5.6.3.2.1 Hold . 37
5.6.3.2.2 Resume . 38
5.6.4 Communication Waiting (CW) . 38
5.6.4.1 Receipt of initial INVITE . 38
5.6.4.2 Accepting the waiting call . 38
5.6.4.3 Rejecting the waiting call . 39
5.6.4.4 Communication release during waiting condition . 39
5.6.4.5 CW condition timeout . 39
5.6.4.6 Notification to originator . 40
5.6.5 Communication Barring (CB). 40
5.6.6 Communication Diversion . 40
5.6.6.1 General . 40
5.6.6.2 CDIV invocation . 40
5.6.6.2.1 Communication Forwarding Unconditional (CFU) . 40
5.6.6.2.2 Communication Forwarding Busy (CFB) . 40
5.6.6.2.3 Communication Forwarding No Reply (CFNR) . 40
5.6.6.2.4 Communication Forwarding on Not Logged-In (CFNL) . 41
5.6.6.2.5 Communication Deflection (CD) . 41
5.6.6.2.6 Communication Forwarding on Subscriber Not Reachable (CFNRc) . 41
5.6.6.3 Notifications relating to CDIV . 41
5.6.6.3.1 Void . 41
5.6.6.3.2 Notification to an originating user on CS access . 41
5.6.6.3.3 Notification to a terminating user on CS access . 42
5.6.7 Explicit Communication Transfer (ECT) . 43
5.6.7.1 General . 43
5.6.7.2 MSC Server as transferor on behalf of UE . 43
5.6.7.3 MSC Server as transferee on behalf of UE . 43
5.6.7.3.1 Actions without 3PCC . 43
5.6.7.3.2 Actions with 3PCC . 44
5.6.7.4 MSC Server as transfer target on behalf of UE . 44
5.6.8 Conference (CONF) . 44
5.6.8.1 General . 44
5.6.8.2 MSC Server as conference creator . 44
5.6.8.2.1 Conference creation . 44
5.6.8.2.2 Putting the conference on hold . 45
5.6.8.2.3 Resuming a held conference . 45
5.6.8.2.4 Adding a party to the conference . 45
5.6.8.2.5 Terminating the conference or disconnecting a party from the conference . 45
5.6.8.2.6 Receipt of a SplitMPTY message . 46
5.6.8.2.7 Remote party disconnects from the conference . 46
5.6.8.3 MSC Server as conference participant . 46
5.6.8.3.1 Receipt of invitation to conference . 46
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5.6.8.3.1.1 General . 46
5.6.8.3.1.2 Receipt of REFER within a dialog . 46
5.6.8.3.1.3 Receipt of REFER outside a dialog . 46
5.6.8.3.1.4 Receipt of INVITE . 47
5.6.8.3.2 Notification of conference invocation . 47
5.6.9 Customized Alerting Tones (CAT) . 47
5.6.9.1 General . 47
5.6.9.2 Early session model. 47
5.6.9.2.1 Originating request . 47
5.6.9.3 Forking model . 48
5.6.9.4 Gateway model . 48
5.6.10 Communication Completion Services (CCBS/CCNL/CCNR) . 48
5.6.10.1 General . 48
5.6.10.2 Communication Completion Terminated at Served User. 48
5.6.10.3 Communication Completion Originated at Served User . 48
5.6.10.3.1 Actions without 3PCC . 48
5.6.10.3.2 Actions with 3PCC . 48
5.7 Supplementary Service Configuration. 48
5.7.1 General . 48
5.7.2 Receipt of REGISTER message . 49
5.7.3 Receipt of HTTP response . 49
5.7.4 Service data interworking . 49
5.7.4.1 Originating identification presentation/restriction (OIP/OIR) . 49
5.7.4.1.1 Registration/erasure . 49
5.7.4.1.2 Activation/deactivation . 49
5.7.4.1.3 Interrogation . 49
5.7.4.2 Terminating identification presentation/restriction (TIP/TIR) . 50
5.7.4.2.1 Registration/erasure . 50
5.7.4.2.2 Activation/deactivation . 50
5.7.4.2.3 Interrogation . 50
5.7.4.3 Communication Hold (HOLD) . 50
5.7.4.4 Communication Waiting (CW) . 51
5.7.4.4.1 Registration/erasure . 51
5.7.4.4.2 Activation/deactivation . 51
5.7.4.4.3 Interrogation . 51
5.7.4.5 Communication Barring (CB) . 51
5.7.4.5.1 Registration/erasure . 51
5.7.4.5.2 Activation/deactivation . 52
5.7.4.5.3 Interrogation . 53
5.7.4.6 Communication Diversion (CDIV) . 53
5.7.4.6.1 Registration . 53
5.7.4.6.1a Erasure . 54
5.7.4.6.2 Activation/deactivation . 55
5.7.4.6.3 Interrogation . 55
5.7.4.7 Explicit Communication Transfer (ECT) . 56
5.7.4.8 Conference (CONF) . 56
5.7.4.9 Communication Completion Services (CCBS/CCNL/CCNR) . 56
5.7.4.9.1 Activation/deactivation . 56
5.7.4.9.2 Interrogation . 56
5.8 Handover / Relocation . 57
5.8.1 Intra-MSC Handover/Relocation . 57
5.8.2 Inter-MSC Handover/Relocation . 57
6 User plane interworking . 57
6.1 General . 57
6.2 IuCS to Mb interworking . 57
6.2.1 Interworking with transcoding . 57
6.2.2 Transcoder-less interworking. 58
6.3 TDM-based A-interface to Mb interworking . 59
6.3.1 Interworking with transcoding . 59
6.3.2 Transcoder-less interworking. 59
6.4 IP-based A-interface to Mb interworking . 60
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6.4.1 Interworking with transcoding . 60
6.4.2 Transcoder-less interworking. 60
7 MSC Server – CS-MGW interaction . 61
7.1 Mobile originated call . 61
7.1.1 CS-MGW selection . 61
7.1.2 IMS session side establishment . 61
7.1.2.1 General . 61
7.1.2.2 Additions to Reserve RTP Connection Point Procedure . 61
7.1.2.3 Additions to Configure RTP Connection Point Procedure . 62
7.1.3 Access bearer establishment . 63
7.1.3.1 General . 63
7.1.3.2 Iu interface on IP . 64
7.1.3.3 A interface over IP . 64
7.1.3.4 A interface over TDM . 64
7.1.3.5 Iu over UTRAN and GERAN . 64
7.1.4 Apply ringing tone . 64
7.1.5 Through connection . 64
7.1.5a Handling of Forking. 64
7.1.6 Failure handling in MSC server . 64
7.2 Mobile terminated call . 65
7.2.1 CS-MGW selection . 65
7.2.2 Network side session establishment . 65
7.2.2.1 General . 65
7.2.2.2 Additions to Reserve and Configure RTP Connection Point . 65
7.2.3 Access bearer assignment . 68
7.2.3.1 General . 68
7.2.3.2 Iu interface on IP . 68
7.2.3.3 A interface over IP . 68
7.2.3.4 A interface over TDM . 68
7.2.3.5 Iu over UTRAN and GERAN . 68
7.2.4 Apply ringing tone . 68
7.2.5 Through connection . 69
7.2.6 Announcement . 69
7.2.7 Failure handling in the MSC server . 69
7.2A Notification Procedures . 69
7.2A.1 General information . 69
7.2A.2 ECN Failure Indication . 69
7.2A.3 ICE Connectivity Check Result Notification . 70
7.2A.4 ICE New Peer Reflexive Candidate Notification . 70
7.3 Call clearing . 70
7.3.1 Clearing received from the network. 70
7.3.1.1 Access bearer clearing . 70
7.3.1.2 Network side clearing . 71
7.3.2 Clearing received from the user . 71
7.3.2.1 Access bearer clearing . 71
7.3.2.2 Network side clearing . 71
7.3.3 Call clearing received from the CS-MGW . 71
7.3.3.1 Bearer released received on the access side . 71
7.3.3.2 Bearer released received on the network side . 71
7.4 Call independent procedures . 71
7.5 Explicit Congestion Notification . 71
7.6 Multimedia Priority Service (MPS) Support . 71
7.7 Interactive Connectivity Establishment . 72
7.8 Codec Parameters Handling . 72
7.8.1 Handling of common codec parameters. 72
7.8.2 EVS speech codec . 72
7.9 SDP Capability Negotiation (SDPCapNeg) . 72
Annex A (informative): Change history . 73
History . 74

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3GPP TS 29.292 version 14.8.0 Release 14 7 ETSI TS 129 292 V14.8.0 (2019-10)
Foreword
rd
This Technical Specification has been produced by the 3 Generation Partnership Project (3GPP).
The contents of the present document are subject to continuing work within the TSG and may change following formal
TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an
identifying change of release date and an increase in version number as follows:
Version x.y.z
where:
x the first digit:
1 presented to TSG for information;
2 presented to TSG for approval;
3 or greater indicates TSG approved document under change control.
y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections,
updates, etc.
z the third digit is incremented when editorial only changes have been incorporated in the document.
ETSI
3GPP TS 29.292 version 14.8.0 Release 14 8 ETSI TS 129 292 V14.8.0 (2019-10)
1 Scope
IMS Centralized Services (ICS) enable the delivery of IM CN subsystem based multimedia telephony and
supplementary services as defined in 3GPP TS 24.173 [4] to users regardless of the attached access network type; e.g.
CS domain access or IP-CAN.
The present document specifies the principles of interworking between the IM CN subsystem and CS domain in order
to enable ICS for UEs using CS domain access.
The present document addresses the area of registration procedures interworking between the CS domain and IM CN
subsystem.
The present document addresses the areas of control and user plane interworking between the IM CN subsystem and CS
domain through an MSC Server enhanced for ICS and CS-MGW respectively. This includes the signalling procedures
between the MSC Server and CS-MGW. For the specification of control plane interworking, present document defines
the protocol interworking between the 3GPP profile of SIP as described in 3GPP TS 24.229 [2] and NAS signalling as
described in 3GPP TS 24.008 [3] required for the support of IM CN subsystem based multimedia telephony and
supplementary services.
The present document addresses the area of supplementary service configuration interworking between the CS domain
and IM CN subsystem.
The present document is applicable to the MSC Server and CS-MGW.
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
- References are either specific (identified by date of publication, edition number, version number, etc.) or
non-specific.
- For a specific reference, subsequent revisions do not apply.
- For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including
a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same
Release as the present document.
[1] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications".
[2] 3GPP TS 24.229: "IP Multimedia Call Control Protocol based on SIP and SDP".
[3] 3GPP TS 24.008: "Mobile radio in
...