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3rd Generation Partnership Project; Technical Specification Group Core Network and Terminals; IP multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3 (Release 8) 《3rd Generation Partnership Project; Technical Specification Group Core Network and Terminals; IP multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3 (Release 8)》这份技术规范是3GPP（第三代合作伙伴计划）为实现基于IP多媒体的呼叫控制协议制定的，主要涉及了使用会话初始化协议（SIP）和会话描述协议（SDP）的第三阶段（Release 8）的标准。 SIP（Session Initiation Protocol）是一种应用层的信令协议，用于发起、修改和终结多媒体通信会话，如语音电话、视频会议、即时消息等。SIP在IP网络中扮演着核心角色，它允许用户代理（如手机或电脑）之间进行通信。该协议的设计原则是简单、可扩展性和灵活性，使得SIP能够处理多种不同类型的会话和多种服务。 SDP（Session Description Protocol）则用于描述会话的媒体内容，包括媒体类型（如音频、视频）、编码格式、传输地址和端口、带宽信息等。SDP通常伴随SIP消息一起发送，提供给接收方关于如何参与会话的信息。在3GPP的Release 8中，这些规范对于3G（UMTS）和4G（LTE）移动通信系统至关重要。Release 8是一个重要的里程碑，引入了多项技术改进，例如更高效的数据传输、增强的用户体验以及对IP多媒体子系统的支持。通过SIP和SDP的结合，3GPP旨在提供高质量的多媒体服务，如VoIP（Voice over IP）和视频通话，同时保持网络的稳定性和效率。此文档的目的是为3GPP内部的未来发展工作提供基础，并非已经经过3GPP组织伙伴的正式批准，因此不应被实施。要获取3GPP系统的实施规范和报告，需通过3GPP组织伙伴的出版办公室获取。关键词：UMTS（第三代移动通信系统）、网络、IP（Internet Protocol）、SIP、SDP、多媒体、LTE（长期演进）等，这些都是该技术规范的核心概念，涵盖了3G和4G网络中的关键技术和协议。 3GPP的版权声明表明未经书面许可，任何部分都不得复制。所有权利归3GPP组织伙伴所有，这些商标如UMTS™、3GPP™和LTE™都是由其成员和3GPP组织伙伴注册并持有。这份技术规范详细定义了基于SIP和SDP的IP多媒体呼叫控制协议的实现细节，是3G和4G网络中实现多媒体通信服务的重要参考文档。

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3GPP TS 24.229 V8.7.0

(2009-03)

Technical Specification

3rd Generation Partnership Project;

Technical Specification Group Core Network and Terminals;

IP multimedia call control protocol based on

Session Initiation Protocol (SIP)

and Session Description Protocol (SDP);

Stage 3

(Release 8)

The present document has been developed within the 3

Generation Partnership Project (3GPP

) and may be further elaborated for the purposes of 3GPP.

The present document has not been subject to any approval process by the 3GPP

Organizational Partners and shall not be implemented.

This Specification is provided for future development work within 3GPP

only. The Organizational Partners accept no liability for any use of this

Specification.

Specifications and reports for implementation of the 3GPP

system should be obtained via the 3GPP Organizational Partners' Publications Offices.

Contents
Foreword.................................................................................................................................................23
Scope....................................................................................................................................................24
References............................................................................................................................................24
Definitions and abbreviations...............................................................................................................34
1 Definitions............................................................................................................................................................34
2 Abbreviations.......................................................................................................................................................39
3A Interoperability with different IP-CAN.............................................................................................41
General.................................................................................................................................................42
1 Conformance of IM CN subsystem entities to SIP, SDP and other protocols.....................................................42
2 URI and address assignments...............................................................................................................................44
2A Transport mechanisms.......................................................................................................................................45
2B Security mechanisms.........................................................................................................................................46
3 Routeing principles of IM CN subsystem entities...............................................................................................47
4 Trust domain........................................................................................................................................................47
4.1 General 47
4.2 P-Asserted-Identity...........................................................................................................................................48
4.3 P-Access-Network-Info.....................................................................................................................................48
4.4 History-Info.......................................................................................................................................................48
4.5 P-Asserted-Service............................................................................................................................................48
4.6 Resource-Priority..............................................................................................................................................48
4.7 Reason (in a response)......................................................................................................................................48
4.8 P-Profile-Key....................................................................................................................................................48
4.9 P-Served-User...................................................................................................................................................48
4.10 P-Private-Network-Indication.........................................................................................................................49
5 Charging correlation principles for IM CN subsystems......................................................................................49
5.1 Overview...........................................................................................................................................................49
5.2 IM CN subsystem charging identifier (ICID)...................................................................................................49
5.3 Access network charging information..............................................................................................................50
5.3.1 General 50
5.3.2 Access network charging information...........................................................................................................50
5.4 Inter operator identifier (IOI)............................................................................................................................50
5.5 Charging function addresses.............................................................................................................................51
6 Support of local service numbers.........................................................................................................................51
7 Emergency service...............................................................................................................................................51
8 Tracing of signalling............................................................................................................................................52
8.1 General 52
8.2 Trace depth........................................................................................................................................................52
9 Overlap signalling................................................................................................................................................52
9.1 General 52
9.2 Overlap signalling methods...............................................................................................................................52
9.2.1 In-dialog method............................................................................................................................................52
9.2.1.1 General 52
9.2.2 Multiple-INVITE method..............................................................................................................................52
9.2.2.1 General 52
9.3 Routeing impacts...............................................................................................................................................53
9.3.1 General 53
9.3.2 Deterministic routeing....................................................................................................................................53
9.3.3 Digit collection...............................................................................................................................................53
Application usage of SIP......................................................................................................................53
1 Procedures at the UE............................................................................................................................................53
1.0 General 53
1.1 Registration and authentication.........................................................................................................................54
1.1.1 General 54
3GPP
3GPP TS 24.229 V8.7.0 (2009-03)3Release 8

1.1.1A Parameters contained in the ISIM...............................................................................................................54
1.1.1B Parameters provisioned to a UE without ISIM or USIM............................................................................55
1.1.1B.1 Parameters provisioned in the IMC..........................................................................................................55
1.1.1B.2 Parameters when UE does not contain ISIM, USIM or IMC...................................................................55
1.1.2 Initial registration...........................................................................................................................................55
1.1.2.1 General 55
1.1.2.2 Initial registration using IMS AKA.............................................................................................................57
1.1.2.3 Initial registration using SIP digest without TLS........................................................................................58
1.1.2.4 Initial registration using SIP digest with TLS.............................................................................................59
1.1.2.5 Initial registration using NASS-IMS bundled authentication.....................................................................59
1.1.2.6 Initial registration using GPRS-IMS-Bundled authentication....................................................................60
1.1.3 Subscription to the registration-state event package......................................................................................60
1.1.3A Subscription to the debug event package....................................................................................................61
1.1.4 User-initiated reregistration and registration of an additional public user identity........................................62
1.1.4.1 General 62
1.1.4.2 IMS AKA as a security mechanism............................................................................................................64
1.1.4.3 SIP digest without TLS as a security mechanism.......................................................................................64
1.1.4.4 SIP digest with TLS as a security mechanism............................................................................................65
1.1.4.5 NASS-IMS bundled authentication as a security mechanism.....................................................................65
1.1.4.6 GPRS-IMS-Bundled authentication as a security mechanism....................................................................65
1.1.5 Authentication................................................................................................................................................66
1.1.5.1 IMS AKA - general.....................................................................................................................................66
1.1.5.2 Void 67
1.1.5.3 IMS AKA abnormal cases..........................................................................................................................67
1.1.5.4 SIP digest without TLS – general...............................................................................................................68
1.1.5.5 SIP digest without TLS – abnormal procedures.........................................................................................68
1.1.5.6 SIP digest with TLS – general....................................................................................................................68
1.1.5.7 SIP digest with TLS – abnormal procedures...............................................................................................69
1.1.5.8 NASS-IMS bundled authentication – general.............................................................................................69
1.1.5.9 NASS-IMS bundled authentication – abnormal procedures.......................................................................69
1.1.5.10 GPRS-IMS-Bundled authentication – general..........................................................................................69
1.1.5.11 GPRS-IMS-Bundled authentication – abnormal procedures....................................................................69
1.1.5.12 Abnormal procedures for all security mechanisms...................................................................................69
1.1.5A Network-initiated re-authentication............................................................................................................69
1.1.5B Change of IPv6 address due to privacy.......................................................................................................70
1.1.6 User-initiated deregistration...........................................................................................................................70
1.1.6.1 General 70
1.1.6.2 IMS AKA as a security mechanism............................................................................................................71
1.1.6.3 SIP digest without TLS as a security mechanism.......................................................................................72
1.1.6.4 SIP digest with TLS as a security mechanism............................................................................................72
1.1.6.5 NASS-IMS bundled authentication as a security mechanism.....................................................................73
1.1.6.6 GPRS-IMS-Bundled authentication as a security mechanism....................................................................73
1.1.7 Network-initiated deregistration....................................................................................................................73
1.2 Subscription and notification............................................................................................................................74
1.2.1 Notification about multiple registered public user identities.........................................................................74
1.2.2 General SUBSCRIBE requirements..............................................................................................................75
1.2A Generic procedures applicable to all methods excluding the REGISTER method........................................75
1.2A.1 UE-originating case.....................................................................................................................................75
1.2A.1.1 General 75
1.2A.1.2 Structure of Request-URI.........................................................................................................................79
1.2A.1.3 UE without dial string processing capabilities.........................................................................................79
1.2A.1.4 UE with dial string processing capabilities..............................................................................................80
1.2A.1.5 Setting the "phone-context" tel URI parameter........................................................................................80
1.2A.1.6 Abnormal cases........................................................................................................................................81
1.2A.2 UE-terminating case....................................................................................................................................81
1.3 Call initiation - UE-originating case.................................................................................................................83
1.3.1 Initial INVITE request...................................................................................................................................83
1.4 Call initiation - UE-terminating case................................................................................................................85
1.4.1 Initial INVITE request...................................................................................................................................85
1.5 Call release........................................................................................................................................................86
1.6 Emergency service............................................................................................................................................86
3GPP
3GPP TS 24.229 V8.7.0 (2009-03)4Release 8

5.1.6.1 General 86

5.1.6.2 Initial emergency registration........................................................................................................................86

5.1.6.2A New initial emergency registration.............................................................................................................87

5.1.6.3 Initial subscription to the registration-state event package............................................................................87

5.1.6.4 User-initiated emergency reregistration.........................................................................................................87

5.1.6.5 Authentication................................................................................................................................................87

5.1.6.6 User-initiated emergency deregistration........................................................................................................87

5.1.6.7 Network-initiated emergency deregistration..................................................................................................88

5.1.6.8 Emergency session setup................................................................................................................................88

5.1.6.8.1 General 88

5.1.6.8.2 Emergency session set-up in case of no registration...................................................................................88

5.1.6.8.3 Emergency session set-up within an emergency registration.....................................................................90

5.1.6.8.4 Emergency session setup within a non-emergency registration.................................................................91

5.1.6.9 Emergency session release.............................................................................................................................93

5.1.6.10 Response to non-UE detectable emergency call..........................................................................................93

5.1.7 Void 94

5.1.8 Maintaining flows and detecting flow failures..................................................................................................94

5.2 Procedures at the P-CSCF....................................................................................................................................94

5.2.1 General 94

5.2.2 Registration.......................................................................................................................................................96

5.2.2.1 General 96

5.2.2.2 IMS AKA as a security mechanism...............................................................................................................99

5.2.2.3 SIP digest without TLS as a security mechanism........................................................................................102

5.2.2.4 SIP digest with TLS as a security mechanism.............................................................................................103

5.2.2.5 NASS-IMS bundled authentication as a security mechanism......................................................................104

5.2.2.6 GPRS-IMS-Bundled authentication as a security mechanism.....................................................................105

5.2.3 Subscription to the user's registration-state event package.............................................................................105

5.2.3A Subscription to the user's debug event package...........................................................................................106

5.2.4 Registration of multiple public user identities................................................................................................106

5.2.5 Deregistration..................................................................................................................................................107

5.2.5.1 User-initiated deregistration.........................................................................................................................107

5.2.5.2 Network-initiated deregistration..................................................................................................................108

5.2.6 General treatment for all dialogs and standalone transactions excluding the REGISTER method................109

5.2.6.1 Introduction..................................................................................................................................................109

5.2.6.2 Determination of UE-originated or UE-terminated case.............................................................................109

5.2.6.3 Requests initiated by the UE........................................................................................................................109

5.2.6.3.1 General for all requests.............................................................................................................................109

5.2.6.3.2 General for all responses...........................................................................................................................110

5.2.6.3.2A Abnormal cases......................................................................................................................................110

5.2.6.3.3 Initial request for a dialog.........................................................................................................................110

5.2.6.3.4 Responses to an initial request for a dialog...............................................................................................112

5.2.6.3.5 Target refresh request for a dialog............................................................................................................112

5.2.6.3.6 Responses to a target refresh request for a dialog.....................................................................................113

5.2.6.3.7 Request for a standalone transaction.........................................................................................................113

5.2.6.3.8 Responses to a request for a standalone transaction.................................................................................114

5.2.6.3.9 Subsequent request other than a target refresh request.............................................................................114

5.2.6.3.10 Responses to a subsequent request other than a target refresh request...................................................115

5.2.6.3.11 Request for an unknown method that does not relate to an existing dialog............................................115

5.2.6.3.12 Responses to a request for an unknown method that does not relate to an existing dialog....................116

5.2.6.4 Requests terminated by the UE....................................................................................................................116

5.2.6.4.1 General for all requests.............................................................................................................................116

5.2.6.4.2 General for all responses...........................................................................................................................116

5.2.6.4.3 Initial request for a dialog.........................................................................................................................116

5.2.6.4.4 Responses to an initial request for a dialog...............................................................................................117

5.2.6.4.5 Target refresh request for a dialog............................................................................................................118

5.2.6.4.6 Responses to a target refresh request for a dialog.....................................................................................119

5.2.6.4.7 Request for a standalone transaction.........................................................................................................119

5.2.6.4.8 Responses to a request for a standalone transaction.................................................................................120

5.2.6.4.9 Subsequent request other than a target refresh request.............................................................................121

5.2.6.4.10 Responses to a subsequent request other than a target refresh request...................................................121

5.2.6.4.11 Request for an unknown method that does not relate to an existing dialog............................................121

3GPP

3GPP TS 24.229 V8.7.0 (2009-03)5Release 8

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