1、 ETSI TS 123 517 V8.0.0 (2007-12)Technical Specification Digital cellular telecommunications system (Phase 2+);Universal Mobile Telecommunications System (UMTS);Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN);IP Multimedia Subsystem (IMS);Functional
2、architecture (3GPP TS 23.517 version 8.0.0 Release 8)GLOBAL SYSTEM FOR MOBILE COMMUNICATIONSRETSI ETSI TS 123 517 V8.0.0 (2007-12) 1 3GPP TS 23.517 version 8.0.0 Release 8 Reference DTS/TSGS-0223517v800 Keywords GSM, UMTS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33
3、4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice Individual copies of the present document can be downloaded from: http:/www.etsi.org The present document may be made availab
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8、 of the 3GPP Organizational Partners. ETSI ETSI TS 123 517 V8.0.0 (2007-12) 2 3GPP TS 23.517 version 8.0.0 Release 8 Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any
9、, 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
10、 the ETSI Web server (http:/webapp.etsi.org/IPR/home.asp). 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) wh
11、ich are, or may be, or may become, essential to the present document. 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
12、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 http:/webapp.etsi.org/key/queryform.asp. ETSI ETSI TS 123 517 V8.0.0 (2007-12) 3 3GPP TS 23.517 version 8.0.0 Rel
13、ease 8 Contents Intellectual Property Rights2 Foreword.2 Foreword.5 1 Scope 6 2 References 6 3 Definitions and abbreviations.7 3.1 Definitions7 3.2 Abbreviations .7 4 Overall architecture 8 5 Overview 9 6 Functional entities 10 6.1 Call Session Control Function (CSCF) 11 6.2 Media Gateway Control Fu
14、nction (MGCF) .12 6.3 Multimedia Resource Function Controller (MRFC) 12 6.4 Breakout Gateway Control Function (BGCF)12 6.5 Interconnection Border Control Function (IBCF).12 7 Internal reference points.12 7.1 Reference point MGCF - CSCF (Mg reference point) .13 7.2 Reference point CSCF - MRFC (Mr ref
15、erence point) 13 7.3 Reference point CSCF - CSCF (Mw reference point)13 7.4 Reference point CSCF - BGCF (Mi reference point).13 7.5 Reference point BGCF - MGCF (Mj reference point) .13 7.6 Reference point BGCF - BGCF (Mk reference point) .14 7.7 Reference point CSCF or BGCF - IBCF (Mx Reference Poin
16、t) 14 8 Value added services architecture 14 8.1 Overview 14 8.2 Reference points.15 8.2.1 Reference point S-CSCF - ASF (ISC reference point) .15 8.2.2 Reference point UPSF - SIP AS or OSA SCS (Sh reference point) .15 8.2.3 Reference point UPSF - IM SSF (Si reference point).16 8.2.4 Reference point
17、ASF - SLF (Dh reference point) .16 8.2.5 Reference point UE - ASF (Ut reference point)16 9 External reference points16 9.1 Interfaces with entities in the transfer plane.16 9.1.1 Reference Point MGCF - T-MGF (Mn Reference Point) .16 9.1.2 Reference point MGCF - SGF (Ie reference point) 17 9.1.3 Refe
18、rence point MRFC - MRFP (Mp reference point).17 9.2 Interface with the UE .17 9.3 Interfaces with the user profile .17 9.3.1 Reference point CSCF - SLF (Dx reference point).17 9.3.2 Reference point CSCF - UPSF (Cx reference point) 18 9.4 Interfaces with Charging Functions18 10 Interconnection with o
19、ther networks18 10.1 Interfaces with the PSTN/ISDN .18 10.2 Interfaces with other IP-based service subsystems.18 11 Interface with the Network Attachment Subsystem (NASS) .19 12 Interface with the Resource and Admission Control Subsystem (RACS) .20 ETSI ETSI TS 123 517 V8.0.0 (2007-12) 4 3GPP TS 23.
20、517 version 8.0.0 Release 8 Annex A (informative): IMS Access scenarios.21 Annex B (informative): IMS interconnection scenarios .22 Annex ZZ (informative): Change history .25 History 26 ETSI ETSI TS 123 517 V8.0.0 (2007-12) 5 3GPP TS 23.517 version 8.0.0 Release 8 Foreword This Technical Specificati
21、on (TS) was produced by ETSI Technical Committee Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN) and originally published and subsequently modified as ETSI ES 282 007 xvii. It was transferred to the 3rd Generation Partnership Project (3GPP) in Decemb
22、er 2007. 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 versio
23、n 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, correction
24、s, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. ETSI ETSI TS 123 517 V8.0.0 (2007-12) 6 3GPP TS 23.517 version 8.0.0 Release 8 1 Scope The present document describes the IP Multimedia Subsystem (IMS) core component of the TISPAN N
25、GN functional architecture and its relationships to other subsystems and components. 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, editio
26、n 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 v
27、ersion of that document in the same Release as the present document. 1 ETSI ES 282 001: “Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); NGN Functional Architecture Release 1“. 2 ETSI TS 182 006: “Telecommunications and Internet converged Services a
28、nd Protocols for Advanced Networking (TISPAN); IP Multimedia Subsystem (IMS); Stage 2 description “. 3 ETSI TS 123 218: “Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); IP Multimedia (IM) session handling; IM call model; Stage 2 (3GPP TS 23.2
29、18)“. 4 ETSI ES 282 010: “Telecommunications and Internet Converged Services and Protocols for Advanced Networking (TISPAN); Charging “. 5 ETSI ES 283 024: “Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); PSTN/ISDN Emulation: H.248 Profile for contr
30、olling Trunking Media Gateways in the PSTN/ISDN Emulation Subsystem (PES); Protocol specification“. 6 ETSI ES 283 027: “Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); Endorsement of the SIP-ISUP Interworking between the IP Multimedia (IM) Core Netw
31、ork (CN) subsystem and Circuit Switched (CS) networks “. 7 ETSI TS 183 021: “Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); Endorsement of 3GPP TS 29.162 Interworking between IM CN Sub-system and IP networks“. 8 ETSI EN 301 931: “Intelligent Networ
32、k (IN); Intelligent Network Capability Set 3 (CS3); Intelligent Network Application Protocol (INAP); Protocol specification“. 9 ETSI ES 201 915-1: “Open Service Access (OSA); Application Programming Interface (API); Part 1: Overview (Parlay 3)“. 10 ETSI TS 123 002: “Digital cellular telecommunicatio
33、ns system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Network architecture (3GPP TS 23.002)“. 11 ETSI TS 123 278: “Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Customised Applications for Mobile network Enhanced Logic (C
34、AMEL) Phase 4; Stage 2; IM CN Interworking (3GPP TS 23.278)“. ETSI ETSI TS 123 517 V8.0.0 (2007-12) 7 3GPP TS 23.517 version 8.0.0 Release 8 12 ETSI TS 129 278: “Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); customized Applications for Mobi
35、le network Enhanced Logic (CAMEL); CAMEL Application Part (CAP) specification for IP Multimedia Subsystems (IMS) (3GPP TS 29.278)“. 13 IETF RFC 3136 (2001): “The SPIRITS Architecture“. 14 IETF RFC 3261 (2002): “SIP: Session Initiation Protocol“. 15 ITU-T Recommendation H.248: “Gateway control protoc
36、ol“. 16 ETSI TS 182 009: “Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); NGN Architecture to support emergency communication from citizen to authority“. xvii ETSI ES 282 007 v1.1.1: “Telecommunications and Internet converged Services and Protocols
37、for Advanced Networking (TISPAN); IP Multimedia Subsystem (IMS); Functional architecture“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: IP Multimedia Subsystem: As defined in TS 123 002 10. NGN IP Multimedia Subs
38、ystem: IMS that supports the provision of SIP-based multimedia services and PSTN/ISDN simulation services to NGN terminals User Equipment (UE): one or more devices allowing a user to access services delivered by TISPAN NGN networks 3.2 Abbreviations For the purposes of the present document, the foll
39、owing abbreviations apply: AF Application Function ALG Application Layer Gateway AS Application Server ASF Application Server Function BCSM Basic Call State Model BGF Border Gateway Function CAMEL Customised Application for Mobile Enhanced Logic CCBS Call Control on Busy Subscriber CSCF Call Session
40、 Control Function E-CSCF Emergency-Call Session Control Function IBCF Intermediate Breakout Control Function I-BGF Interconnection-Border Gateway Function I-CSCF Interrogating-Call Session Control Function IM-MGW IP Multimedia - Media GateWay IMS IP Multimedia Subsystem IN Intelligent Network INAP I
41、N Application Part IN-SCF Intelligent Network Switching Control Function IP-CAN IP-Connectivity Access Network ISDN Integrated Services Digital Network MGCF Media Gateway Control Function MGF Media Gateway Function MM MultiMedia MRFC Multimedia Resource Function Controller MRFP Multimedia Resource F
42、unction Processor ETSI ETSI TS 123 517 V8.0.0 (2007-12) 8 3GPP TS 23.517 version 8.0.0 Release 8 NAPT Network Address and Port Translation NASS Network Attachment SubSystem NGN Next Generation Network OSA Open Service Access P-CSCF Proxy-Call Session Control Function PDF Policy Decision Function PES
43、 PSTN/ISDN Emulation Subsystem PSTN Public Switched Telephony Network RACS Resource and Admission Control Subsystem SCF Switching Control Function SCIM Service Capability Interaction Manager S-CSCF Serving-Call Session Control Function SGF Signalling Gateway Function SIP Session Initiation Protocol
44、SLF Subscription Locator FunctionSPIRITS Service in the PSTN/IN Requesting InTernet Services SSF Service Switching Function TCAP Transaction Capabilities Application Part T-MGF Trunking-Media Gateway Function UE User Equipment UPSF User Profile Server Function 4 Overall architecture The TISPAN NGN f
45、unctional architecture ES 282 001 1 is structured according to a service layer and an IP-based transport layer (see figure 1). The service layer comprises the following components: The IP Multimedia Subsystem core component (IMS). The PSTN/ISDN Emulation Subsystem (PES). Other multimedia subsystems
46、and applications. Common components (i.e. used by several subsystems) such as those required for accessing applications, charging functions, user profile management, security management, routing data bases (e.g. ENUM), etc. IP-connectivity is provided to NGN user equipment by the transport layer, un
47、der the control of the Network Attachment SubSystem (NASS) and the Resource and Admission Control Subsystem (RACS). These subsystems hide the transport technology used in access and core networks below the IP layer. The present document further describes the functional architecture of the IP Multime
48、dia Subsystem (IMS) core component. ETSI ETSI TS 123 517 V8.0.0 (2007-12) 9 3GPP TS 23.517 version 8.0.0 Release 8 Other Su b sy st em sCor e I MSPSTN/ISDNEm u l at i onSu b sy st emUserEquipmentSer v i ce Lay erTransport processing functionsResource and Admission Control Su b sy st emApplicationsUs
49、erprofilesTransport LayerNetwork Attachment Su b sy st emOthernetworksFigure 1: TISPAN NGN overall architecture 5 Overview The NGN IP Multimedia Subsystem (IMS) supports the provision of SIP-based multimedia services to NGN terminals. It also supports the provision of PSTN/ISDN simulation services. Functional entities of an IMS may be used by an operator in support of transit network scenarios. The routing may be performed, depending on the entity performing the routing, and depending on the traffic case, on signalling infor
