1、 ETSI TS 124 294 V14.0.0 (2017-03) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; IP Multimedia Subsystem (IMS) Centralized Services (ICS) protocol via I1 interface (3GPP TS 24.294 version 14.0.0 Release 14) TECHNICAL SPECIFICATIO
2、N ETSI ETSI TS 124 294 V14.0.0 (2017-03)13GPP TS 24.294 version 14.0.0 Release 14Reference RTS/TSGC-0124294ve00 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 Siret N 348 623 562 00017 - NAF 742 C Association b
3、ut 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. The content of any electronic and/or print versio
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7、lm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2017. All rights res
8、erved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned b
9、y the GSM Association. ETSI ETSI TS 124 294 V14.0.0 (2017-03)23GPP TS 24.294 version 14.0.0 Release 14Intellectual 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 a
10、vailable 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 s
11、erver (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 000 314 (or the updates on the ETSI Web server) which are, or may be, or may be
12、come, 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 GSM identities. These should
13、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. Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“,
14、“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 ETSI TS 124 294 V14.0.0
15、 (2017-03)33GPP TS 24.294 version 14.0.0 Release 14Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 8g31 Scope 9g32 References 9g33 Definitions and abbreviations . 10g33.1 Definitions 10g33.2 Abbreviations . 11g34 General description. 11g34.1 General . 11g
16、34.2 Structure of the protocol . 11g34.2.1 Introduction. 11g34.2.2 Application level protocol 11g34.2.3 Transport-layer protocols 11g34.2.3.1 General 11g34.2.3.2 USSD as transport-layer protocol . 12g35 Functional entities 12g35.1 User Equipment (UE) . 12g35.2 Application Server (AS) . 13g36 Communi
17、cation between ICS UE and SCC AS via I1 interface 13g36.1 Introduction 13g36.2 Session control procedures . 13g36.2.1 Session setup . 13g36.2.1.1 General 13g36.2.1.2 Detailed behaviour of ICS UE 14g36.2.1.2.1 ICS UE CS Session Origination 14g36.2.1.2.2 ICS UE CS Session Termination without UE assist
18、ed T-ADS . 15g36.2.1.2.3 ICS UE CS Session Termination with UE assisted T-ADS 17g36.2.1.2.4 Failure 17g36.2.1.2.4.2 Sending I1 failure to SCC AS 17g36.2.1.3 Detailed behaviour of SCC AS . 18g36.2.1.3.1 SCC AS CS Session Origination . 18g36.2.1.3.2 SCC AS CS Session Termination without ICS UE assiste
19、d T-ADS . 20g36.2.1.3.3 SCC AS CS Session Termination with ICS UE assisted T-ADS 21g36.2.1.3.4 Failure 21g36.2.1.3.4.1 General . 21g36.2.1.3.4.2 Sending Failure message to ICS UE 22g36.2.1.3.4.3 Receipt of failure message from ICS UE . 22g36.2.2 Void 22g36.2.3 Session release 22g36.2.3.1 General 22g
20、36.2.3.2 Detailed behaviour of ICS UE 23g36.2.3.2.1 Sending an I1 BYE 23g36.2.3.2.2 Receiving an I1 BYE . 23g36.2.3.3 Detailed behaviour of SCC AS . 24g36.2.3.3.1 Sending an I1 Bye message to the UE . 24g36.2.3.3.2 Receipt of I1 Success message from the UE . 24g36.2.3.3.3 Receipt of I1 Bye message f
21、rom the UE 24g36.2.3A I1 session setup when invoking mid-call supplementary service 24g36.2.3A.1 General 24g36.2.3A.2 Detailed behaviour of ICS UE 25g3ETSI ETSI TS 124 294 V14.0.0 (2017-03)43GPP TS 24.294 version 14.0.0 Release 146.2.3A.2.1 Mid-call service initiated by ICS UE . 25g36.2.3A.2.2 Mid-c
22、all service initiated by SCC AS . 25g36.2.3A.3 Detailed behaviour of SCC AS . 26g36.2.3A.3.1 Mid-call service initiated by ICS UE . 26g36.2.3A.3.2 Mid-call service initiated by SCC AS . 26g36.2.4 Adding I1 control to existing CS session (I1 Augmentation) . 27g36.2.4.1 General 27g36.2.4.2 Detailed be
23、haviour of ICS UE 27g36.2.4.2.1 Augmentation initiated by ICS UE 27g36.2.4.2.2 Augmentation initiated by SCC AS . 27g36.2.4.3 Detailed behaviour of SCC AS . 27g36.2.4.3.1 Augmentation initiated by ICS UE 27g36.2.4.3.2 Augmentation initiated by SCC AS . 27g36.2.5 Service control transfer (Gm fallback
24、 to I1) . 28g36.2.5.1 General 28g36.2.5.2 Service continuity while retaining the use of CS access for media . 28g36.2.5.2.1 Detailed behaviour of ICS UE . 28g36.2.5.2.2 Detailed behaviour of SCC AS 29g36.2.5.3 Service continuity when transferring from PS access to CS access 30g36.2.5.3.1 Detailed be
25、haviour of UE 30g36.2.5.3.2 Detailed behaviour of SCC AS 31g36.2.5.3.3 P-CSCF releasing the source access leg during transferring from PS access to CS access . 32g36.2.5.5 Service continuity after transferring multiple calls from PS access to CS access using SRVCC . 32g36.2.5.5.1 General 32g36.2.5.5
26、.2 Detailed behaviour of ICS UE . 32g36.2.5.5.3 Detailed behaviour of SCC AS 32g36.2.6 Assignment of single CS bearer to I1 sessions . 32g36.2.6.1 General 32g36.2.6.2 Originating call behaviour . 32g36.2.6.2.1 Detailed behaviour of ICS UE . 32g36.2.6.2.2 Detailed behaviour of SCC AS 33g36.2.6.3 Term
27、inating call behaviour . 34g36.2.6.3.1 Detailed behaviour of ICS UE . 34g36.2.6.3.2 Detailed behaviour of SCC AS 34g36.3 Supplementary services control procedures . 35g36.3.0 Introduction. 35g36.3.1 Line ID Services (OIP, OIR, TIP, TIR) 36g36.3.1.1 Originating Identity Presentation (OIP) 36g36.3.1.2
28、 Originating Identity Restriction (OIR) 36g36.3.1.3 Terminating Identity Presentation (TIP) . 36g36.3.1.4 Terminating Identity Restriction (TIP) 36g36.3.2 Communication diversion services (CDIV) 36g36.3.2.1 Communication Forwarding Unconditional (CFU) 36g36.3.2.2 Communication Forwarding on Not Logg
29、ed-in (CFNL) 36g36.3.2.3 Communication Forwarding Busy (CFB) . 36g36.3.2.4 Communication Forwarding No Reply (CFNR) . 37g36.3.2.5 Communication Forwarding on Subscriber Not Reachable (CFNRc) 37g36.3.2.6 Communication Deflection (CD) 37g36.3.2.7 Communication Diversion Notification (CDIVN) 37g36.3.4
30、Communication Hold (HOLD)/Resume . 38g36.3.4.1 Actions at the ICS UE . 38g36.3.4.2 Actions at the SCC AS 38g36.3.5 Consultative Explicit Communication Transfer 39g36.3.5.1 Actions at the ICS UE . 39g36.3.5.2 Actions at the SCC AS 39g36.3.6 Conference calling (CONF) 40g36.3.6.0 General 40g36.3.6.1 Ac
31、tions at the ICS UE . 40g36.3.6.1.1 Conference creation with a conference factory URI 40g36.3.6.1.2 Inviting other users to a conference . 40g36.3.6.1.3 User joining a conference by using a conference URI 41g36.3.6.1.4 Conference participant leaving a conference . 41g3ETSI ETSI TS 124 294 V14.0.0 (2
32、017-03)53GPP TS 24.294 version 14.0.0 Release 146.3.6.1.5 Conference focus removes conference participant from a conference 41g36.3.6.2 Actions at the SCC AS 42g36.3.6.2.1 Conference creation with a conference factory URI 42g36.3.6.2.2 Inviting other users to a conference . 42g36.3.6.2.3 Conference
33、participant leaving a conference . 42g36.3.7 Communication Waiting . 42g36.3.7.1 Actions at the ICS UE . 42g36.3.7.2 Actions at the SCC AS 42g36.4 SCC AS and ICS UE Time Synchronization 42g36.4.1 General 42g36.4.2 Generating Time . 43g36.4.3 Detailed behaviour of ICS UE 43g36.4.3.1 ICS UE Synchroniz
34、ation Origination 43g36.4.4 Detailed behaviour of SCC AS . 44g36.4.4.1 SCC AS Synchronization Termination . 44g37 Protocol specification and implementation 44g37.1 Overview of I1 protocol functionality 44g37.2 I1-protocol messages and functional definition 45g37.2.1 I1-protocol messages 45g37.2.1.1
35、General 45g37.2.1.2 Session establishment messages 46g37.2.1.3 Stable session messages 47g37.2.1.4 Session clearing messages. 47g37.2.1.5 Error messages 47g37.2.1.6 Supplementary Services Invocation related messages 47g37.2.1.7 Other messages . 47g37.2.2 I1 message structure and common field encodin
36、g 48g37.2.2.1 General 48g37.2.2.1.1 Message Header structure 48g37.2.2.1.2 Protocol Version information 48g37.2.2.1.3 Message Type and Reason 48g37.2.2.1.4 Call Identifier 48g37.2.2.1.5 Sequence-ID 49g37.3 Messages 49g37.3.1 General Messages . 49g37.3.2 I1 INVITE ICS UE initiated 50g37.3.2.1 General
37、 50g37.3.2.2 Message Type . 50g37.3.2.3 To-id 50g37.3.2.4 From-id . 50g37.3.2.5 Accept Contact 50g37.3.2.6 ERAccept Contact. 50g37.3.2.7 Reject Contact . 51g37.3.2.8 Timestamp. 51g37.3.3 INVITE SCC AS initiated . 51g37.3.3.1 General 51g37.3.3.2 Message Type . 51g37.3.3.3 From-id . 51g37.3.3.4 To-id
38、51g37.3.3.5 SCC AS PSI DN . 52g37.3.3.6 Timestamp . 52g37.3.3.7 Conference-id 52g37.3.4 BYE ICS UE initiated 52g37.3.4.1 General 52g37.3.4.2 Message Type . 52g37.3.5 BYE SCC AS initiated . 52g37.3.5.1 General 52g37.3.5.2 Message Type . 53g37.3.6 I1 PROGRESS ICS UE initiated . 53g37.3.6.1 General 53g
39、37.3.6.2 Message Type . 53g3ETSI ETSI TS 124 294 V14.0.0 (2017-03)63GPP TS 24.294 version 14.0.0 Release 147.3.7 I1 PROGRESS SCC AS initiated 53g37.3.7.1 General 53g37.3.7.2 Message Type . 54g37.3.7.3 SCC AS PSI DN . 54g37.3.8 I1 FAILURE . 54g37.3.8.1 General 54g37.3.8.2 Message Type . 54g37.3.8.3 T
40、o-id 55g37.3.8.4 Reason Phrase . 55g37.3.9 REFER UE initiated. 55g37.3.9.1 General 55g37.3.9.2 Message Type . 55g37.3.9.3 Refer-to-id . 55g37.3.9.4 Replaces 55g37.4 I1 information elements and functional definition . 56g37.4.1 I1 information elements 56g37.4.2 I1 Information elements encoding 58g37.
41、4.2.1 General 58g37.4.2.2 Void. 59g37.4.2.3 From-id Information 59g37.4.2.3A To-id Information 60g37.4.2.4 Privacy 62g37.4.2.5 SCC-AS-id 63g37.4.2.6 Session-identifier 64g37.4.2.7 Void. 65g37.4.2.8 Replaces 65g37.4.2.9 Accept Contact 66g37.4.2.10 ERAccept Contact. 68g37.4.2.11 Reject Contact . 69g37
42、.4.2.12 Mid-Call 70g37.4.2.13 Reason-Phrase . 72g37.4.2.14 Time Stamp . 72g37.4.2.15 Refer-to . 73g37.4.2.16 Conference-id 74g37.5 Session states and Session control procedures . 75g37.5.1 General 75g37.5.2 Session states 75g37.5.2.1 Session originated by the ICS UE . 75g37.5.2.1.1 Session states at
43、 ICS UE ICS UE originated call . 75g37.5.2.1.2 Session states at SCC AS ICS UE originated call 76g37.5.2.2 Session terminated at the ICS UE . 76g37.5.2.2.1 Session states at UE ICS UE terminated call 76g37.5.2.2.2 Session states at SCC AS ICS UE terminated session 76g37.5.2.3 Session release 77g37.5
44、.2.3.1 Session states at ICS UE 77g37.5.2.3.2 Session states at SCC AS. 77g37.5.3 Session control procedures . 77g37.5.3.1 General 77g37.5.3.2 Session establishment 77g37.5.3.2.1 UE-originating case . 77g37.5.3.2.1.1 Procedure at ICS UE 77g37.5.3.2.1.1.1 Session request . 77g37.5.3.2.1.1.2 Session p
45、roceeding . 78g37.5.3.2.1.1.3 Alerting indication 78g37.5.3.2.1.1.4 Session connected 78g37.5.3.2.1.2 Procedure at SCC AS . 79g37.5.3.2.1.2.1 Session request . 79g37.5.3.2.1.2.2 Session progressing 79g37.5.3.2.1.2.3 Alerting indication 79g37.5.3.2.1.2.4 Session connected 79g37.5.3.2.2 UE-terminating
46、 case 80g37.5.3.2.2.1 Procedure at ICS UE 80g3ETSI ETSI TS 124 294 V14.0.0 (2017-03)73GPP TS 24.294 version 14.0.0 Release 147.5.3.2.2.1.1 Session request . 80g37.5.3.2.2.1.2 Session progressing 80g37.5.3.2.2.1.3 Alerting indication 80g37.5.3.2.2.1.4 Session connected 80g37.5.3.2.2.2 Procedure at SC
47、C AS . 81g37.5.3.2.2.2.1 Session request . 81g37.5.3.2.2.2.2 Call proceeding 81g37.5.3.2.2.2.3 Alerting indication 81g37.5.3.2.2.2.4 Session connected 81g37.5.3.3 I1 service control signalling release 82g37.5.3.3.1 Initiating release of I1 service control signalling . 82g37.5.3.3.2 Responding to rel
48、ease of I1 service control signalling 82g37.5.3.4 Receipt of a transport protocol error . 82g37.5.3.4.1 USSD Transport 82g3Annex A (normative): Data structure associating keys with values 83g3A.1 General . 83g3A.2 Associating keys with values 83g3A.2.1 Associating keys with public user identities .
49、83g3Annex B (informative): Change history . 84g3History 88g3ETSI ETSI TS 124 294 V14.0.0 (2017-03)83GPP TS 24.294 version 14.0.0 Release 14Foreword This Technical Specification (TS) has been produced by ETSI 3rd Generation 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 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 follow
