1、 ETSI TS 123 231 V15.0.0 (2018-07) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); SIP-I based circuit-switched core network; Stage 2 (3GPP TS 23.231 version 15.0.0 Release 15) TECHNICAL SPECIFICATION GLOBAL SYSTEM FOR MOBILE COMMUNICAT
2、IONSRETSI ETSI TS 123 231 V15.0.0 (2018-07)13GPP TS 23.231 version 15.0.0 Release 15Reference RTS/TSGC-0423231vf00 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 348 623 562 00017 - NAF 742 C Association bu
3、t 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 version
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9、nd owned by the GSM Association. ETSI ETSI TS 123 231 V15.0.0 (2018-07)23GPP TS 23.231 version 15.0.0 Release 15Intellectual Property Rights Essential patents IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information pertaining to these essenti
10、al 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 available from the ETSI Secretariat. Latest updates a
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13、d 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 Technical Specification (TS) has been produced
14、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 corresponding ETSI deliverables. The cross reference between
15、 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 to be interpreted as described in clause 3.2 of
16、 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 123 231 V15.0.0 (2018-07)33GPP TS 23.231 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword .
17、 2g3Modal verbs terminology 2g3Foreword . 8g31 Scope 9g32 References 9g33 Definitions, symbols and abbreviations . 10g33.1 Definitions 10g33.2 Symbols 10g33.3 Abbreviations . 11g34 Main Concepts 11g34.1 General . 11g34.2 Call Control 12g34.3 H.248 12g34.4 MGW Selection 12g34.4.1 Principles 12g34.4.2
18、 Optimised MGW Selection . 12g34.4.3 Deferred MGW selection 14g34.4.4 Mobile to Mobile Call. 15g34.4.5 MGW bypass 16g35 General Circuit Switched Core Network Domain Architecture . 18g36 Call Establishment 19g36.1 Basic Mobile Originating Call 19g36.1.1 Basic Mobile Originating Call Establishment wit
19、h immediate MGW selection 19g36.1.1.1 General 19g36.1.1.2 MGW selection . 19g36.1.1.3 Initial INVITE message 19g36.1.1.4 Network side bearer establishment . 19g36.1.1.5 Access bearer assignment . 20g36.1.1.6 Framing protocol initialisation 20g36.1.1.7 Through-Connection . 20g36.1.1.8 Confirmation of
20、 bearer establishment . 20g36.1.1.9 Interworking function 20g36.1.1.10 Codec handling . 20g36.1.1.11 Voice Processing function . 20g36.1.1.12 Failure handling in MSC server 20g36.1.1.13 Example 20g36.1.2 Originating Call Establishment For Iu Interface on IP with immediate MGW selection . 23g36.1.3 O
21、riginating Call Establishment For A Interface user plane over IP with immediate MGW selection 24g36.2 Basic Mobile Terminating Call 25g36.2.1 Basic Mobile Terminating Call Establishment with immediate MGW selection . 25g36.2.1.1 General 25g36.2.1.2 GMSC server. 26g36.2.1.2.1 MGW selection 26g36.2.1.
22、2.2 Initial INVITE message . 26g36.2.1.2.3 Outgoing side bearer termination configuration 26g36.2.1.2.4 Incoming side bearer termination configuration 26g36.2.1.2.5 Through-Connection 26g36.2.1.2.6 Indication of bearer establishment . 26g36.2.1.2.7 Voice Processing function . 27g36.2.1.2.8 Failure h
23、andling in GMSC server 27g36.2.1.3 MSC server . 27g36.2.1.3.1 Paging 27g3ETSI ETSI TS 123 231 V15.0.0 (2018-07)43GPP TS 23.231 version 15.0.0 Release 156.2.1.3.2 Call setup . 27g36.2.1.3.3 MGW selection 27g36.2.1.3.4 Network side bearer termination configuration . 27g36.2.1.3.5 Access bearer assignm
24、ent 28g36.2.1.3.6 Framing protocol initialisation 28g36.2.1.3.7 Called party alerting 28g36.2.1.3.8 Called party answer . 28g36.2.1.3.9 Through-Connection 28g36.2.1.3.10 Interworking function 28g36.2.1.3.11 Codec handling 28g36.2.1.3.12 Voice Processing function . 29g36.2.1.3.13 Failure handling in
25、MSC server . 29g36.2.1.3.14 Example - the GMSC selects a MGW . 29g36.2.2 Terminating Call Establishment For Iu Interface on IP with immediate MGW selection 32g36.2.3 Terminating Call Establishment For A Interface user plane over IP with immediate MGW selection 32g37 Call Clearing 33g37.1 General . 3
26、3g37.2 Visited MSC Server Procedures . 34g37.2.1 Call Clearing when Visited MSC Server has Forwarded/Deflected Call . 34g37.2.2 Call Clearing received from core network 34g37.2.2.1 Procedures towards access side . 34g37.2.2.2 Procedures towards network side 34g37.2.2.2.1 Call Clearing during establi
27、shment . 34g37.2.2.2.1.1 Originating MSC-S 34g37.2.2.2.1.2 Terminating MSC-S. 34g37.2.2.2.2 Call Clearing after call established 34g37.2.2.2.2.1 Originating MSC-S 34g37.2.2.2.2.2 Terminating MSC-S. 34g37.2.2.3 Example Call Flow 35g37.2.3 Call Clearing received from UE . 36g37.2.3.1 Procedures toward
28、s access side . 36g37.2.3.2 Procedures towards network side 37g37.2.3.2.1 Call Clearing during call establishment . 37g37.2.3.2.1.1 Originating MSC-S 37g37.2.3.2.1.2 Terminating MSC-S. 37g37.2.3.2.2 Call Clearing after call established 37g37.2.3.2.2.1 Originating MSC-S 37g37.2.3.2.2.2 Terminating MS
29、C-S. 37g37.2.3.3 Example Call Flow 37g37.2.4 Call Clearing initiated by V-MSC Server . 38g37.2.4.1 Call clearing towards access network . 38g37.2.4.2 Call clearing towards network side . 38g37.2.4.3 Example Call Flow 38g37.2.5 Call clearing received from MGW . 40g37.2.5.1 Bearer released on the acce
30、ss side . 40g37.2.5.2 Bearer released on the network side 40g37.2.5.3 Example Call Flow 40g37.2.6 Call Clearing procedures towards MGW 42g37.2.7 Call Clearing for Iu Interface on IP 42g37.3 Gateway MSC Server Procedures 42g37.3.1 Call Clearing received from peer SIP-I node 42g37.3.2 Call Clearing in
31、itiated by G-MSC Server . 42g37.3.2.1 Call clearing to the destination side 42g37.3.2.2 Call clearing to the originating side 42g37.3.3 Call Clearing received from MGW . 43g37.3.3.1 Bearer released on the destination side . 43g37.3.3.2 Bearer released on the originating side . 43g37.3.4 Call Clearin
32、g procedures towards MGW 43g38 Handover/Relocation 43g38.1 UMTS to UMTS . 43g3ETSI ETSI TS 123 231 V15.0.0 (2018-07)53GPP TS 23.231 version 15.0.0 Release 158.1.1 Intra-MSC SRNS/SBSS Relocation . 43g38.1.1.1 Intra-MGW Relocation . 43g38.1.1.2 Inter-MGW Relocation . 43g38.1.2 Basic Inter-MSC SRNS/SBS
33、S Relocation 43g38.1.3 Subsequent Inter-MSC SRNS/SBSS Relocation back to the Anchor MSC . 43g38.1.4 Subsequent Inter-MSC SRNS/SBSS Relocation to a third MSC . 44g38.1.5 SRNS/SBSS Relocation with Iu on IP 44g38.2 UMTS to GSM . 44g38.2.1 Intra-MSC UMTS to GSM Handover . 44g38.2.1.1 Intra-MGW Relocatio
34、n . 44g38.2.1.2 Inter-MGW Relocation . 44g38.2.1.3 Intra-MSC UMTS to GSM Handover for A interface over IP 44g38.2.2 Basic Inter-MSC UMTS to GSM Handover . 44g38.2.2.1 Basic Inter-MSC UMTS to GSM Handover for A Interface over IP 44g38.2.3 Subsequent Inter-MSC UMTS to GSM Handover back to the Anchor M
35、SC . 44g38.2.3.1 Subsequent Inter-MSC UMTS to GSM Handover back to the anchor MSC for A Interface over IP . 44g38.2.4 Subsequent Inter-MSC UMTS to GSM Handover to a third MSC . 45g38.3 GSM to UMTS . 45g38.3.1 Intra-MSC GSM to UMTS Handover . 45g38.3.1.1 Intra-MGW Relocation . 45g38.3.1.2 Inter-MGW R
36、elocation . 45g38.3.2 Basic Inter-MSC GSM to UMTS Handover . 45g38.3.3 Subsequent Inter-MSC GSM to UMTS Handover back to the Anchor MSC . 45g38.3.4 Subsequent Inter-MSC GSM to UMTS Handover to a third MSC . 45g38.3.5 GSM to UMTS Handover with Iu on IP . 45g38.4 GSM to GSM . 45g38.4.1 Intra-MSC Inter
37、-BSS GSM to GSM Handover 45g38.4.1.1 Intra-MGW Relocation . 46g38.4.1.2 Inter-MGW Relocation . 46g38.4.1.3 Intra-MSC GSM to GSM Handover for A interface over IP 46g38.4.2 Basic Inter-MSC GSM to GSM Handover . 46g38.4.2.1 Basic Inter-MSC GSM to GSM Handover for A Interface over IP 46g38.4.3 Subsequen
38、t Inter-MSC GSM to GSM Handover back to the Anchor MSC . 46g38.4.3.1 Subsequent Inter-MSC GSM to GSM Handover back to the anchor MSC for A Interface over IP . 46g38.4.4 Subsequent GSM to GSM Handover to a third MSC . 46g38.4.5 BSS Internal Handover . 46g39 Compatibility Issues . 46g39.1 Compatibilit
39、y Issues for Nc Interface . 46g39.2 Compatibility Issues for Mc Interface 47g310 General (G)MSC server-MGW Procedures . 47g310.1 MGW Unavailable . 47g310.2 MGW Available . 47g310.3 MGW Recovery . 47g310.4 (G)MSC server Recovery . 47g310.5 MGW Re-register . 47g310.6 MGW Re-registration Ordered by (G)
40、MSC server 47g310.7 Removal from Service of a Physical Termination 47g310.8 Restoration to Service of a Physical Termination 47g310.9 Audit of MGW . 47g310.10 MGW Capability Change . 47g310.11 (G)MSC Server Out of service . 47g310.12 MGW Resource Congestion Handling - Activate 47g310.13 MGW Resource
41、 Congestion Handling -Indication . 48g310.14 Control association monitoring 48g310.15 Hanging termination detection . 48g311 Identities . 48g311.1 Telephone numbering schemes 48g311.2 (G)MSC Server Identity . 48g311.3 Sub-addressing . 48g3ETSI ETSI TS 123 231 V15.0.0 (2018-07)63GPP TS 23.231 version
42、 15.0.0 Release 1512 Operational Aspects . 48g312.1 Charging . 48g312.2 SIP session continuity 48g312.2.1 Use of SIP session timer . 48g312.2.2 Example call flow . 49g313 Interactions with Other Services 49g313.1 Enhanced Multi-Level Precedence and Pre-emption service (eMLPP) 49g313.2 Call Deflectio
43、n Service 49g313.3 Line identification Services 50g313.3.1 Calling Line Identification Presentation (CLIP) . 50g313.3.2 Calling Line Identification Restriction (CLIR) . 50g313.3.3 Connected Line Identification Presentation (COLP) 50g313.3.4 Connected Line Identification Restriction (COLR) 50g313.4 C
44、all Forwarding Services . 50g313.4.0 Principles 50g313.4.1 Call Forwarding Unconditional (CFU) . 50g313.4.2 Call Forwarding on mobile subscriber Busy (CFB) . 50g313.4.2.1 Network Determined User Busy (NDUB) 50g313.4.2.1.1 Initial INVITE . 50g313.4.2.1.2 Confirmation of bearer establishment . 51g313.
45、4.2.2 User Determined User Busy (UDUB) . 51g313.4.2.2.1 Initial INVITE . 51g313.4.2.2.2 Confirmation of bearer establishment . 51g313.4.3 Call Forwarding on No Reply (CFNRy) . 51g313.4.3.1 Initial INVITE . 51g313.4.4 Call Forwarding on mobile subscriber Not Reachable (CFNRc) 52g313.4.4.1 Initial INV
46、ITE . 52g313.4.4.2 Confirmation of bearer establishment . 52g313.5 Call Waiting (CW) . 52g313.6 Call Hold (CH) . 52g313.6.1 Principles 52g313.6.2 Hold Request 52g313.6.3 Retrieval Request 53g313.7 Multiparty (MPTY) 53g313.7.1 Introduction. 53g313.7.2 Beginning the Multi Party call 53g313.7.3 Managin
47、g an active Multi Party call . 54g313.7.4 Disconnect 54g313.7.5 Failure handling in MSC server 54g313.7.6 Example 1 . 54g313.8 Closed User Group (CUG) . 56g313.9 Advice of Charge (AoC) 56g313.10 User-to-User Signalling (UUS) 57g313.11 Call Barring Services 57g313.11.1 Barring of outgoing calls 57g31
48、3.11.2 Barring of incoming calls other than Anonymous Call Rejection 57g313.11.3 Anonymous Call Rejection (ACR) . 57g313.12 Explicit Call Transfer (ECT) 57g313.12.1 Example 57g313.13 Completion of Calls to Busy Subscriber (CCBS). 58g313.14 Multiple Subscriber Profile (MSP) . 58g313.15 Multicall . 58
49、g313.16 Calling Name Presentation (CNAP) . 58g313.17 Alternate Speech/Fax . 58g313.18 Modification of the Access Bearer . 58g313.18.1 Modification of Bearer Characteristics . 58g313.18.2 IWF Protocol Change . 59g313.19 GSM Fax 59g313.20 Voice group call service (VGCS), Voice broadcast service (VBS) 59g314 Interactions with Other Network Features and Services 59g3ETSI ETSI TS 123 231 V15.0.0 (2018-07)73GPP TS 23.231 version 15.0.0 Release 1514.1 Customised Applications for Mobile network Enhanced Logic (CAMEL) . 59g314.1.1 Play Announcement/Send Tone 59g314.1.2 User Interaction
