1、 ETSI TS 123 334 V14.4.0 (2018-01) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; IP Multimedia Subsystem (IMS) Application Level Gateway (IMS-ALG) - IMS Access Gateway (IMS-AGW) interface: Procedures descriptions (3GPP TS 23.334
2、version 14.4.0 Release 14) TECHNICAL SPECIFICATION ETSI ETSI TS 123 334 V14.4.0 (2018-01)13GPP TS 23.334 version 14.4.0 Release 14Reference RTS/TSGC-0423334ve40 Keywords GSM,LTE,UMTS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Si
3、ret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print.
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9、. GSM and the GSM logo are trademarks registered and owned by the GSM Association. ETSI ETSI TS 123 334 V14.4.0 (2018-01)23GPP TS 23.334 version 14.4.0 Release 14Intellectual Property Rights Essential patents IPRs essential or potentially essential to the present document may have been declared to E
10、TSI. 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 avail
11、able 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 0
12、00 314 (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
13、 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. Foreword This
14、 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 correspondin
15、g ETSI deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/key/queryform.asp. Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are
16、 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 ETSI TS 123 334 V14.4.0 (2018-01)33GPP TS 23.334 version 14.4.0 Release 14Con
17、tents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 8g31 Scope 9g32 References 9g33 Definitions, symbols and abbreviations . 13g33.1 Definitions 13g33.2 Symbols 14g33.3 Abbreviations . 14g34 Architecture 15g34.1 Reference architecture 15g34.2 NAT Function 16g34.
18、3 ATCF/ATGW Function . 17g34.4 eP-CSCF/eIMS-AGW Function . 17g35 Functional Requirements 18g35.1 General . 18g35.2 Gate Control 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. tec
19、hnical enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. ETSI ETSI TS 123 334 V14.4.0 (2018-01)93GPP TS 23.334 version 14.4.0 Release 141 Scope Annex G of 3GPP TS 23.228 2 gives out an IMS Application Level G
20、ateway (IMS-ALG) and IMS Access Media Gateway (IMS-AGW) based reference model to support NAPT-PT, gate control and traffic policing between IP-CAN and IMS domain. Figure 1.1: Scope of the specification Figure 1.1 illustrates the reference model for Iq: - the dashed line represents the IP signalling-
21、path with SIP (at Gm) as call/session control protocol between the UE and the P-CSCF (IMS-ALG); - the bold, horizontal line represents the IP media-path (also known as (IP) bearer-path or (IP) data-path; the notion media is used as generic term for “IP application data“); and - the vertical line rep
22、resents the Iq control-path with H.248 as gateway/policy control protocol between the IMS-ALG and the IMS-AGW (H.248 messages are transported over IP). The Iq reference point is between the P-CSCF (IMS-ALG) and the IMS-AGW. It conveys the necessary information that is needed to allocate, modify and
23、release (IP) transport addresses. The present document defines the stage 2 description for the Iq reference point. The stage 2 shall cover the information flow between the P-CSCF (IMS-ALG) and IMS-AGW. The protocol used over the Iq interface is the gateway control protocol according ITU-T Recommenda
24、tion H.248 (which is specified for Iq by an H.248 profile according 3GPP TS 29.334 3). 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, ed
25、ition 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
26、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 23.228: “IP Multimedia Subsystem (IMS), stage 2“. ETSI ETSI TS 123 334 V14.4.0 (2018-01)103GPP TS 23.334 version 14.4.0 Release 143 3GPP TS 29.334: “IMS Appl
27、ication Level Gateway (IMS-ALG) IMS Access Gateway (IMS-AGW) Iq interface, stage 3“. 4 IETF RFC 2663: “IP Network Address Translator (NAT) Terminology and Considerations“. 5 3GPP TS 32.260: “Telecommunication management; Charging management; IP Multimedia Subsystem (IMS) charging“. 6 IETF RFC 3556:
28、“Session Description Protocol (SDP) Bandwidth Modifiers for RTP Control Protocol (RTCP) Bandwidth“. 7 IETF RFC 3605: “Real Time Control Protocol (RTCP) attribute in Session Description Protocol (SDP)“. 8 3GPP TS 23.205: “Bearer independent circuit-switched core network; Stage 2“. 9 ITU-T Recommendat
29、ion H.248.1 (05/2002): “Gateway Control Protocol: Version 2“ including the Corrigendum1 for Version 2 (03/04). 10 IETF RFC 2216: “Network Element Service Template“. 11 3GPP TS 24.229: “IP Multimedia Call Control Protocol based on SIP and SDP“. 12 3GPP TS 33.328: “IMS Media Plane Security“. 13 IETF R
30、FC 4568: “Session Description Protocol (SDP) Security Descriptions for Media Streams“. 14 IETF RFC 3711: “The Secure Real-time Transport Protocol (SRTP)“. 15 IETF RFC 5124: “Extended Secure RTP Profile for Real-time Transport Control Protocol (RTCP)-Based Feedback (RTP/SAVPF)“. 16 IETF RFC 3168: “Th
31、e Addition of Explicit Congestion Notification (ECN) to IP“. 17 IETF RFC 6679: “Explicit Congestion Notification (ECN) for RTP over UDP“. 18 3GPP TS 23.237: “IP Multimedia subsystem (IMS) Service Continuity; Stage 2“. 19 3GPP TS 24.237: “IP Multimedia subsystem (IMS) Service Continuity; Stage 3“. 20
32、 3GPP TS 29.162: “Interworking between the IM CN subsystem and IP networks“. 21 3GPP TS 26.114: “IP Multimedia Subsystem (IMS); Multimedia Telephony; Media handling and interaction“. 22 3GPP TS 22.153: “Multimedia Priority Service“. 23 IETF RFC 5285: “A General Mechanism for RTP Header Extensions“.
33、24 IETF RFC 6236: “Negotiation of Generic Image Attributes in the Session Description Protocol (SDP)“. 25 IETF RFC 4975: “The Message Session Relay Protocol (MSRP)“. 26 IETF RFC 6714: “Connection Establishment for Media Anchoring (CEMA) for the Message Session Relay Protocol (MSRP)“. 27 IETF RFC 458
34、3: “Session Description Protocol (SDP) Format for Binary Floor Control Protocol (BFCP) Streams“. 28 IETF RFC 5246: “The Transport Layer Security (TLS) Protocol Version 1.2“. 29 IETF RFC 793: “Transmission Control Protocol DARPA Internet Program Protocol Specification“. 30 IETF RFC 4145: “TCP-Based M
35、edia Transport in the Session Description Protocol (SDP)“. 31 IETF RFC 4582: “The Binary Floor Control Protocol (BFCP)“. ETSI ETSI TS 123 334 V14.4.0 (2018-01)113GPP TS 23.334 version 14.4.0 Release 1432 IETF RFC 6347: “Datagram Transport Layer Security Version 1.2“. 33 IETF RFC 7345: “UDP Transport
36、 Layer (UDPTL) over Datagram Transport Layer Security (DTLS)“. 34 IETF draft-schwarz-mmusic-sdp-for-gw-04: “SDP codepoints for gateway control“. Editors note: The above document cannot be formally referenced until it is published as an RFC. 35 GSM Association RCC.07: “Rich Communication Suite 5.1 Ad
37、vanced Communications Services and Client Specification, Version 2.0, 03 May 2013“. 36 GSM Association RCC.07: “Rich Communication Suite 5.1 Advanced Communications Services and Client Specification, Version 3.0, 25 September 2013“. 37 Void. 38 ITU-T Recommendation H.248.84 (07/2012): “Gateway contr
38、ol protocol: NAT-traversal for peer-to-peer services“. 39 IETF RFC 5245: “Interactive Connectivity Establishment (ICE): A Protocol for Network Address Translator (NAT) Traversal for Offer/Answer Protocols“. 40 IETF RFC 5389: “Session Traversal Utilities for NAT (STUN)“. 41 IETF RFC 5766: “Traversal
39、Using Relays around NAT (TURN): Relay Extensions to Session Traversal Utilities for NAT (STUN)“. 42 IETF RFC 5763: “Framework for Establishing a Secure Real-time Transport Protocol (SRTP) Security Context Using Datagram Transport Layer Security (DTLS)“. 43 IETF RFC 5764: “Datagram Transport Layer Se
40、curity (DTLS) Extension to Establish Keys for the Secure Real-time Transport Protocol (SRTP)“. 44 3GPP TS 24.371: “Web Real-Time Communications (WebRTC) client access to the IP Multimedia (IM) Core Network (CN) subsystem; Protocol specification“. 45 IETF RFC 6135: “An Alternative Connection Model fo
41、r the Message Session Relay Protocol (MSRP)“. 46 OMA-TS-CPM_Conversation_Function-V2_0-20150113-C: “CPM Conversation Functions, Candidate Version 2.0 13 Jan 2015“. 47 IETF RFC 5746: “Transport Layer Security (TLS) Renegotiation Indication Extension“. 48 3GPP TS 33.310: “Network Domain Security (NDS)
42、; Authentication Framework (AF)“. 49 IETF RFC 7675: “Session Traversal Utilities for NAT (STUN) Usage for Consent Freshness“. 50 IETF RFC 6716: “Definition of the Opus Audio Codec“. 51 3GPP TS 26.441: “Codec for Enhanced Voice Services (EVS); General Overview“. 52 3GPP TS 26.445: “Codec for Enhanced
43、 Voice Services (EVS); Detailed Algorithmic Description“. 53 IETF RFC 4566: “SDP: Session Description Protocol“. 54 IETF RFC 4867: “RTP Payload Format and File Storage Format for the Adaptive Multi-Rate (AMR) and Adaptive Multi-Rate Wideband (AMR-WB) Audio Codecs“. 55 IETF RFC 4566: “SDP: Session De
44、scription Protocol“. 56 IETF RFC 7587: “RTP Payload Format for the Opus Speech and Audio Codec“. 57 IETF RFC 6544: “TCP Candidates with Interactive Connectivity Establishment (ICE)“. ETSI ETSI TS 123 334 V14.4.0 (2018-01)123GPP TS 23.334 version 14.4.0 Release 1458 IETF RFC 4571: “Framing Real-time
45、Transport Protocol (RTP) and RTP Control Protocol (RTCP) Packets over Connection-Oriented Transport“. 59 IETF RFC 6947: “The Session Description Protocol (SDP) Alternate Connectivity (ALTC) Attribute“. 60 IETF RFC 5761: “Multiplexing RTP Data and Control Packets on a Single Port“. 61 IETF draft-ietf
46、-rtcweb-data-channel-13: “WebRTC Data Channels“. Editors note: The above document cannot be formally referenced until it is published as an RFC. 62 IETF draft-ietf-mmusic-msrp-usage-data-channel-03: “MSRP over Data Channels“. Editors note: The above document cannot be formally referenced until it is
47、 published as an RFC. 63 IETF RFC 4960: “Stream Control Transmission Protocol“. 64 IETF draft-ietf-mmusic-sctp-sdp-26: “Session Description Protocol (SDP) Offer/Answer Procedures For Stream Control Transmission Protocol (SCTP) over Datagram Transport Layer Security (DTLS) Transport“. Editors note: T
48、he above document cannot be formally referenced until it is published as an RFC. 65 IETF draft-ietf-mmusic-data-channel-sdpneg-10: “SDP-based Data Channel Negotiation“. Editors note: The above document cannot be formally referenced until it is published as an RFC. 66 IETF RFC 5939: “Session Descript
49、ion Protocol (SDP) Capability Negotiation“. 67 IETF RFC 6871: “Session Description Protocol (SDP) Media Capabilities Negotiation“. 68 IETF RFC 4573: “MIME Type Registration for RTP Payload Format for H.224“. 69 ITU-T Recommendation H.224 (01/2005): “A real time control protocol for simplex applications using the H.221 LSD/HSD/MLP channels“. 70 ITU-T Recommendation H.281 (11/1994): “A far end camera control protocol for
