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TECHNICAL SPECIFICATION
Digital cellular telecommunications system (Phase 2+) (GSM);
Universal Mobile Telecommunications System (UMTS);
LTE;
5G;
IP multimedia call control protocol based on
Session Initiation Protocol (SIP)
and Session Description Protocol (SDP);
Stage 3
(3GPP TS 24.229 version 17.8.0 Release 17)
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3GPP TS 24.229 version 17.8.0 Release 17 1 ETSI TS 124 229 V17.8.0 (2022-10)
Reference
RTS/TSGC-0124229vh80
Keywords
5G,GSM,LTE,UMTS
ETSI
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© ETSI 2022.
All rights reserved.
ETSI
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3GPP TS 24.229 version 17.8.0 Release 17 2 ETSI TS 124 229 V17.8.0 (2022-10)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations
pertaining to these essential IPRs, if any, are 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 Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
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.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its
Members. 3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and of the 3GPP
Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of the
®
oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Legal Notice
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. These shall be
interpreted as being references to the corresponding ETSI deliverables.
The cross reference between 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 24.229 version 17.8.0 Release 17 3 ETSI TS 124 229 V17.8.0 (2022-10)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 39
1 Scope . 41
2 References . 42
3 Definitions of terms, symbols and abbreviations . 57
3.1 Terms . 57
3.2 Symbols . 65
3.3 Abbreviations . 65
3A Interoperability with different IP-CAN . 69
4 General . 69
4.1 Conformance of IM CN subsystem entities to SIP, SDP and other protocols . 69
4.2 URI and address assignments . 73
4.2A Transport mechanisms . 74
4.2B Security mechanisms . 75
4.2B.1 Signalling security . 75
4.2B.2 Media security . 78
4.3 Routeing principles of IM CN subsystem entities . 81
4.4 Trust domain . 82
4.4.1 General . 82
4.4.2 P-Asserted-Identity . 82
4.4.3 P-Access-Network-Info . 83
4.4.4 History-Info . 83
4.4.5 P-Asserted-Service. 83
4.4.6 Resource-Priority . 83
4.4.7 Reason (in a response) . 83
4.4.8 P-Profile-Key . 83
4.4.9 P-Served-User . 83
4.4.10 P-Private-Network-Indication . 84
4.4.11 P-Early-Media . 84
4.4.12 CPC and OLI . 84
4.4.13 Feature-Caps . 84
4.4.14 Priority . 84
4.4.15 iotl . 84
4.4.16 Restoration-Info . 84
4.4.17 Relayed-Charge . 85
4.4.18 Service-Interact-Info . 85
4.4.19 Cellular-Network-Info . 85
4.4.20 Response-Source . 85
4.4.21 Attestation-Info header field . 85
4.4.22 Origination-Id header field . 85
4.4.23 Additional-Identity header field . 85
4.4.24 Priority-Verstat header field . 85
4.5 Charging correlation principles for IM CN subsystems . 85
4.5.1 Overview . 85
4.5.2 IM CN subsystem charging identifier (ICID) . 86
4.5.2A Related ICID . 87
4.5.3 Access network charging information . 87
4.5.3.1 General . 87
4.5.3.2 Access network charging information . 87
4.5.4 Inter operator identifier (IOI) . 88
4.5.4A Transit inter operator identifier (Transit IOI) . 89
ETSI
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3GPP TS 24.229 version 17.8.0 Release 17 4 ETSI TS 124 229 V17.8.0 (2022-10)
4.5.5 Charging function addresses . 90
4.5.6 Relayed charge parameters . 90
4.5.7 Loopback-indication parameter . 90
4.5.8 IM CN subsystem Functional Entity Identifier . 91
4.5.8.1 General . 91
4.5.8.2 Tracking of IM CN subsystem functional entities generating charging information . 91
4.5.8.3 Tracking of applications generating charging information . 91
4.6 Support of local service numbers . 91
4.7 Emergency service . 91
4.7.1 Introduction. 91
4.7.2 Emergency calls generated by a UE . 91
4.7.3 Emergency calls generated by an AS . 92
4.7.4 Emergency calls received from an enterprise network . 92
4.7.5 Location in emergency calls . 92
4.7.6 eCall type of emergency service . 93
4.8 Tracing of signalling . 94
4.8.1 General . 94
4.8.2 Trace depth . 94
4.9 Overlap signalling . 94
4.9.1 General . 94
4.9.2 Overlap signalling methods . 94
4.9.2.1 In-dialog method . 94
4.9.2.1.1 General . 94
4.9.2.2 Multiple-INVITE method . 94
4.9.2.2.1 General . 94
4.9.3 Routeing impacts . 95
4.9.3.1 General . 95
4.9.3.2 Deterministic routeing . 95
4.9.3.3 Digit collection . 95
4.10 Dialog correlation for IM CN subsystems . 95
4.10.1 General . 95
4.10.2 CONF usage. 96
4.11 Priority mechanisms . 96
4.12 Overload control . 97
4.13 II-NNI traversal scenario . 98
4.13.1 General . 98
4.13.2 Identifying the II-NNI traversal scenario . 98
4.13.3 Security aspects . 99
4.14 Restoration procedures . 99
4.14.1 General . 99
4.14.2 P-CSCF restoration procedures . 99
4.14.3 S-CSCF restoration procedures . 100
4.15 Resource sharing . 100
4.16 Priority sharing . 100
4.17 3GPP PS data off . 101
4.18 Dynamic Service Interaction . 101
4.19 Restricted Local Operator Services . 101
5 Application usage of SIP . 102
5.1 Procedures at the UE . 102
5.1.0 General . 102
5.1.1 Registration and authentication. 102
5.1.1.1 General . 102
5.1.1.1A Parameters contained in the ISIM . 103
5.1.1.1B Parameters provisioned to a UE without ISIM or USIM . 103
5.1.1.1B.1 Parameters provisioned in the IMC . 103
5.1.1.1B.2 Parameters when UE does not contain ISIM, USIM or IMC . 104
5.1.1.2 Initial registration . 104
5.1.1.2.1 General . 104
5.1.1.2.2 Initial registration using IMS AKA . 109
5.1.1.2.3 Initial registration using SIP digest without TLS . 110
5.1.1.2.4 Initial registration using SIP digest with TLS . 111
ETSI
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3GPP TS 24.229 version 17.8.0 Release 17 5 ETSI TS 124 229 V17.8.0 (2022-10)
5.1.1.2.5 Initial registration using NASS-IMS bundled authentication . 111
5.1.1.2.6 Initial registration using GPRS-IMS-Bundled authentication . 111
5.1.1.3 Subscription to the registration-state event package . 112
5.1.1.3A Void. 113
5.1.1.4 User-initiated reregistration and registration of an additional public user identity . 113
5.1.1.4.1 General . 113
5.1.1.4.2 IMS AKA as a security mechanism. 117
5.1.1.4.3 SIP digest without TLS as a security mechanism . 118
5.1.1.4.4 SIP digest with TLS as a security mechanism . 118
5.1.1.4.5 NASS-IMS bundled authentication as a security mechanism . 118
5.1.1.4.6 GPRS-IMS-Bundled authentication as a security mechanism . 119
5.1.1.5 Authentication . 119
5.1.1.5.1 IMS AKA - general . 119
5.1.1.5.2 Void . 121
5.1.1.5.3 IMS AKA abnormal cases . 121
5.1.1.5.4 SIP digest without TLS – general . 122
5.1.1.5.5 SIP digest without TLS – abnormal procedures . 122
5.1.1.5.6 SIP digest with TLS – general . 122
5.1.1.5.7 SIP digest with TLS – abnormal procedures . 123
5.1.1.5.8 NASS-IMS bundled authentication – general . 123
5.1.1.5.9 NASS-IMS bundled authentication – abnormal procedures . 123
5.1.1.5.10 GPRS-IMS-Bundled authentication – general . 123
5.1.1.5.11 GPRS-IMS-Bundled authentication – abnormal procedures . 123
5.1.1.5.12 Abnormal procedures for all security mechanisms . 123
5.1.1.5A Network-initiated re-authentication . 123
5.1.1.5B Change of IPv6 address due to privacy . 124
5.1.1.6 User-initiated deregistration . 124
5.1.1.6.1 General . 124
5.1.1.6.2 IMS AKA as a security mechanism. 127
5.1.1.6.3 SIP digest without TLS as a security mechanism . 127
5.1.1.6.4 SIP digest with TLS as a security mechanism . 128
5.1.1.6.5 NASS-IMS bundled authentication as a security mechanism . 128
5.1.1.6.6 GPRS-IMS-Bundled authentication as a security mechanism .
...