1、 ETSI TS 123 206 V7.5.0 (2008-01)Technical Specification Digital cellular telecommunications system (Phase 2+);Universal Mobile Telecommunications System (UMTS);Voice Call Continuity (VCC) between Circuit Switched (CS)and IP Multimedia Subsystem (IMS);Stage 2 (3GPP TS 23.206 version 7.5.0 Release 7)
2、GLOBAL SYSTEM FOR MOBILE COMMUNICATIONSRETSI ETSI TS 123 206 V7.5.0 (2008-01) 1 3GPP TS 23.206 version 7.5.0 Release 7 Reference RTS/TSGS-0223206v750 Keywords GSM, 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 Siret N 348 623
3、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 available in more than one electronic version or in print. I
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6、to one of the following services: http:/portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Instit
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8、3 206 V7.5.0 (2008-01) 2 3GPP TS 23.206 version 7.5.0 Release 7 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, is publicly available for ETSI members and non-memb
9、ers, 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 (http:/webapp.etsi.org/IPR/home.
10、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) which are, or may be, or may become, essential to the p
11、resent 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 GSM identities. These should be interpreted as being
12、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 123 206 V7.5.0 (2008-01) 3 3GPP TS 23.206 version 7.5.0 Release 7 Contents Intellectual Property Rights2 Forewor
13、d.2 Foreword.5 1 Scope 6 2 References 6 3 Definitions, symbols and abbreviations .7 3.1 Definitions7 3.2 Abbreviations .7 4 VCC Concepts8 4.1 General .8 4.2 Radio environments8 4.3 Domain selection8 4.4 Anchoring in IMS of VCC subscriber calls9 4.4.1 Calls originated by VCC subscribers9 4.4.2 Calls
14、terminated to VCC subscribers9 4.5 Domain transfer procedures .9 4.6 Regulatory aspects10 5 Architecture10 5.1 General .10 5.2 Reference model.10 5.3 VCC entities .12 5.3.1 VCC application .12 5.3.1.1 General12 5.3.1.2 Functional Entities used by the VCC application12 5.3.1.2.1 Domain Transfer Funct
15、ion (DTF) .12 5.3.1.2.2 Domain Selection Function (DSF) 12 5.3.1.2.3 CS Adaptation Function (CSAF).13 5.3.1.2.4 CAMEL Service 13 5.3.2 VCC UE13 5.4 Reference points.14 5.4.1 DTF S-CSCF, CSAF S-CSCF, DSF S-CSCF reference point (ISC) .14 5.4.2 CSAF I-CSCF, DTF I-CSCF reference point (Ma) 14 5.4.3 Func
16、tional entity HSS reference point .14 5.4.4 gsmSCF VMSC reference point 14 5.4.5 gsmSCF HSS reference point 14 5.4.6 VCC Application VCC UE reference point (V3) 14 6 Information flows and procedures14 6.1 Registration 14 6.1.1 CS domain registration .14 6.1.2 IMS registration15 6.2 Origination .15 6
17、.2.1 General15 6.2.2 VCC UE origination from CS domain15 6.2.2.1 General15 6.2.2.2 UE origination from CS domain using CAMEL.16 6.2.3 VCC UE origination from IMS domain17 6.3 Termination 17 6.3.0 General17 6.3.1 Terminated call coming from CS18 6.3.2 Terminated call coming from IMS .18 6.3.3 Termina
18、ted call directed to CS .18 6.3.4 Terminated call directed to IMS .19 ETSI ETSI TS 123 206 V7.5.0 (2008-01) 4 3GPP TS 23.206 version 7.5.0 Release 7 6.4 Domain transfer21 6.4.1 Domain transfer procedures21 6.4.1.1 General21 6.4.1.2 Enablement of domain transfer procedures.21 6.4.1.3 Execution of dom
19、ain transfer procedures22 6.4.1.4 Access Leg Update toward the remote end .23 6.4.1.5 Source Access Leg Release.24 6.4.2 Domain transfer information flows.24 6.4.2.1 Domain transfer: IMS to CS domain.24 6.4.2.2 Domain transfer: CS domain to IMS.26 6.4.2.3 Subsequent domain transfers.26 6.4.3 Void 26
20、 6.5 Supplementary services27 6.5.1 General27 6.5.2 Supplementary services behaviour .27 6.5.2.1 General27 6.5.2.2 Line Identification supplementary services.27 6.5.2.2.1 General 27 6.5.2.2.2 IMS: Originating Identification Presentation (OIP), CS: Calling Line Identity Presentation (CLIP)27 6.5.2.2.
21、3 IMS: Terminating Identification Presentation (TIP), CS: Connected Line Identity Presentation (COLP) .27 6.5.2.2.4 IMS: Originating Identification Restriction (OIR), CS: Calling Line Identity Restriction (CLIR) .27 6.5.2.2.5 IMS: Terminating Identification Restriction (TIR), CS: Connected Line Iden
22、tity Restriction (COLR)27 6.5.2.3 IMS: Communication Diversion (CDIV), CS: Call Forwarding supplementary services.27 6.5.2.4 IMS: Communication Hold, CS: Call Wait and CS: Call Hold supplementary services 28 6.5.2.5 IMS: Conference (CONF), CS: Multiparty (MPTY) supplementary service28 6.5.2.6 IMS: C
23、all Barring (CB), CS: Call Barring (Operator Determined and supplementary service) .28 6.5.3 Impact of service behaviour28 6.6 CAMEL services 28 6.7 Presence services29 6.8 Other procedures 29 6.8.1 User preferences and operator policy29 7 Security.29 7.1 General .29 7.2 Access security for CS Domai
24、n29 7.3 Access security for IMS .29 8 Charging.30 8.1 General description.30 8.2 Charging strategy .30 8.3 Accounting strategy30 Annex A (informative): Call diversion techniques from CS to IMS31 A.1 Implementation options for call diversion from CS to the DTF in IMS 31 Annex B (informative): Domain
25、selection for VCC 33 Annex C (informative): Techniques for the prevention of circular looping for CS Terminations 34 C.1 Implementation options prevention of circular looping for CS Terminations .34 Annex D (informative): Change history .36 History 37 ETSI ETSI TS 123 206 V7.5.0 (2008-01) 5 3GPP TS
26、23.206 version 7.5.0 Release 7 Foreword This Technical Specification has been produced by the 3rdGeneration 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
27、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 documen
28、t 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 ETSI TS 123 206 V7.5.0 (2008-01) 6 3GPP TS 23.206
29、version 7.5.0 Release 7 1 Scope The present document specifies the functional architecture and information flows of the Voice Call Continuity feature which provides the capability to transfer the path of an existing voice call between a 3GPP CS system (GSM/UMTS) and IMS, and vice versa. These capabi
30、lities were designed per requirements in TS 22.101 20. 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.
31、) 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
32、 same Release as the present document. 1 3GPP TS 22.228: “Service requirements for the Internet Protocol (IP) multimedia core network subsystem (IMS); Stage 1“. 2 3GPP TS 23.228: “IP Multimedia Subsystem (IMS); Stage 2“. 3 3GPP TS 23.018: “Basic Call Handling; Technical realization“. 4 3GPP TS 23.07
33、8: “Customized Applications for Mobile network Enhanced Logic (CAMEL) Phase 4; Stage 2“. 5 3GPP TS 33.102: “3G security; Security architecture“. 6 3GPP TS 33.203: “Access security for IP-based services“. 7 3GPP TS 22.952: “Priority service guide“. 8 3GPP TS 22.004: “General on supplementary services
34、“. 9 3GPP TS 22.173: “IP Multimedia Core Network Subsystem (IMS) Multimedia Telephony Service and supplementary services; Stage 1“. 10 3GPP TS 23.218: “IP Multimedia (IM) session handling; IM call model; Stage 2“. 11 3GPP TS 23.002: “Network Architecture“. 12 3GPP TS 23.011: “Technical realization o
35、f Supplementary Services“. 13 3GPP TS 23.167: “IP Multimedia Subsystem (IMS) emergency sessions“. 14 3GPP TS 24.010: “Mobile Radio Interface Layer 3 - Supplementary Services Specification - General Aspects“. 15 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 16 ITU-T Recommendation E.164: “The
36、 international public telecommunication numbering plan“. 17 3GPP TS 23.226: “Global Text Telephony“. 18 RFC 3261 (June 2002): “SIP: Session Initiation Protocol“. 19 OMA-ERELD-DM-V1_2-20060602-C: “Enabler Release Definition for OMA Device Management, Candidate Version 1.2“. ETSI ETSI TS 123 206 V7.5.
37、0 (2008-01) 7 3GPP TS 23.206 version 7.5.0 Release 7 20 3GPP TS 22.101: “Service aspects; Service principles“. 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in TR 21.905 15 and the following apply. A term defined in
38、 the present document takes precedence over the definition of the same term, if any, in TR 21.905 15. Anchoring in IMS: Insertion of the Domain Transfer Function in the signalling path of the voice call/session establishment in order to enable the capability of domain transfer for this call/session.
39、 IP Multimedia Routing Number (IMRN): An IMRN is a routable number that points to the IM CN subsystem. In a roaming scenario, the IMRN has the same structure as an international ISDN number. The Tel URI format of the IMRN is treated as a PSI within the IM CN subsystem. CS Domain Routing Number (CSRN
40、): A CSRN is a number that is used to route a call from the IM CN subsystem to the user in the CS domain. Domain Transfer: Transfer of the access leg of a voice call on a UE from CS domain to IMS and vice versa while maintaining active session. Access Leg: This is the call control leg between the VC
41、C UE and the DTF. Remote Leg: This is the call control leg between the DTF and the remote party from the VCC subscribers perspective. VCC UE: User Equipment supporting the VCC feature. The VCC UE is defined in clause 5.3.2 of this document. VCC Domain Transfer Number (VDN): A public telecommunicatio
42、n number, as defined by ITU-T Recommendation E.164 16 used by the UE to request the DTF to perform Domain Transfer to the CS domain from the IMS. VCC Domain Transfer URI (VDI): A SIP URI used by the UE to request the DTF to perform Domain Transfer to the IMS from the CS domain. 3.2 Abbreviations For
43、 the purposes of the present document, the abbreviations given in TR 21.905 15 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905 15. 3pcc Third party call control CSAF CS Adaptation FunctionCSR
44、N CS Domain Routing Number DSF Domain Selection Function DTF Domain Transfer Function iFC Initial Filter Criteria IMRN IP Multimedia Routing Number PSI Public Service Identity VCC Voice Call Continuity VDI VCC Domain Transfer URI VDN VCC Domain Transfer Number ETSI ETSI TS 123 206 V7.5.0 (2008-01) 8
45、 3GPP TS 23.206 version 7.5.0 Release 7 4 VCC Concepts 4.1 General Voice Call Continuity is a home IMS application that provides capabilities to transfer voice calls between the CS domain and the IMS. VCC provides functions for voice call originations, voice call terminations and for Domain Transfer
46、s between the CS domain and the IMS and vice versa. The VCC application is implemented in the users home network. Voice calls from and to a VCC UE are anchored at the VCC application in the home IMS to provide voice continuity for the user during transition between the CS domain and the IMS. VCC voi
47、ce calls in either the CS domain or IMS are anchored at the VCC application in the home IMS using standard CS domain techniques available for rerouting calls at call establishment. A 3pcc (Third party call control) function is employed at the VCC application to facilitate inter domain mobility throu
48、gh the use of Domain Transfers between the CS domain and the IMS. Domain Transfers may be enabled in one direction (i.e. from the CS domain to the IMS or from the IMS to CS domain), or in both directions as per network configuration requirements. The VCC application has the capability to perform dom
49、ain transfers for a VCC UEs voice session multiple times in both directions. The capability of anchoring in IMS of Emergency calls and CS calls other than voice calls (e.g. CS Video, CS Data, CS Fax, SCUDIF calls.) is not specified in this document. Anchoring in IMS of voice calls/sessions originating from or terminating to a subscriber that does not have a VCC UE or an active VCC subscription is subject to operator policy. CS originating and terminating calls that are not anchored are handled accord
