1、 ETSI TS 1Digital cellular telecoUniversal Mobile TelSIP-I based cir(3GPP TS 23.2TECHNICAL SPECIFICATION123 231 V13.0.0 (2016communications system (Phaelecommunications System (circuit-switched core networkStage 2 .231 version 13.0.0 Release 13GLOBAL SYSTEMOBILE COMMUN16-01) hase 2+); (UMTS); rk; 13
2、) TEM FOR ICATIONSRETSI ETSI TS 123 231 V13.0.0 (2016-01)13GPP TS 23.231 version 13.0.0 Release 13Reference RTS/TSGC-0423231vd00 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
3、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. The content of any electronic and/or
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8、reserved. 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 owne
9、d by the GSM Association. ETSI ETSI TS 123 231 V13.0.0 (2016-01)23GPP TS 23.231 version 13.0.0 Release 13Intellectual 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 publicl
10、y 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 the ETSI We
11、b 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 000 314 (or the updates on the ETSI Web server) which are, or may be, or may
12、 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 GSM identities. These shou
13、ld 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 123 231 V13.
15、0.0 (2016-01)33GPP TS 23.231 version 13.0.0 Release 13Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 8g31 Scope 9g32 References 9g33 Definitions, symbols and abbreviations . 10g33.1 Definitions 10g33.2 Symbols 11g33.3 Abbreviations . 11g34 Main Concepts
16、11g34.1 General . 11g34.2 Call Control 12g34.3 H.248 12g34.4 MGW Selection 12g34.4.1 Principles 12g34.4.2 Optimised MGW Selection . 13g34.4.3 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 Esta
17、blishment 19g36.1 Basic Mobile Originating Call 19g36.1.1 Basic Mobile Originating Call Establishment with 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 .
18、 20g36.1.1.6 Framing protocol initialisation 20g36.1.1.7 Through-Connection . 20g36.1.1.8 Confirmation of 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 2
19、1g36.1.2 Originating Call Establishment For Iu Interface on IP with immediate MGW selection . 23g36.1.3 Originating 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 imme
20、diate MGW selection . 25g36.2.1.1 General 25g36.2.1.2 GMSC server. 26g36.2.1.2.1 MGW selection 26g36.2.1.2.2 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
21、.6 Indication of bearer establishment . 26g36.2.1.2.7 Voice Processing function . 27g36.2.1.2.8 Failure handling in GMSC server 27g3ETSI ETSI TS 123 231 V13.0.0 (2016-01)43GPP TS 23.231 version 13.0.0 Release 136.2.1.3 MSC server . 27g36.2.1.3.1 Paging 27g36.2.1.3.2 Call setup . 27g36.2.1.3.3 MGW se
22、lection 27g36.2.1.3.4 Network side bearer termination configuration . 28g36.2.1.3.5 Access bearer assignment 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 29g
23、36.2.1.3.11 Codec handling 29g36.2.1.3.12 Voice Processing function . 29g36.2.1.3.13 Failure handling in 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 Establishmen
24、t For A Interface user plane over IP with immediate MGW selection 32g37 Call Clearing 33g37.1 General . 33g37.2 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 tow
25、ards access side . 34g37.2.2.2 Procedures towards network side 34g37.2.2.2.1 Call Clearing during establishment . 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 35g37.2.2.2.2.1 Originating MSC-S 35g37.2.2.2.2.2 Terminating MSC-
26、S. 35g37.2.2.3 Example Call Flow 35g37.2.3 Call Clearing received from UE . 36g37.2.3.1 Procedures towards 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.
27、2.2 Call Clearing after call established 37g37.2.3.2.2.1 Originating MSC-S 37g37.2.3.2.2.2 Terminating MSC-S. 37g37.2.3.3 Example Call Flow 37g37.2.4 Call Clearing initiated by V-MSC Server . 39g37.2.4.1 Call clearing towards access network . 39g37.2.4.2 Call clearing towards network side . 39g37.2.
28、4.3 Example Call Flow 39g37.2.5 Call clearing received from MGW . 40g37.2.5.1 Bearer released on the access 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 Gatew
29、ay MSC Server Procedures 42g37.3.1 Call Clearing received from peer SIP-I node 42g37.3.2 Call Clearing initiated by G-MSC Server . 43g37.3.2.1 Call clearing to the destination side 43g37.3.2.2 Call clearing to the originating side 43g37.3.3 Call Clearing received from MGW . 43g37.3.3.1 Bearer releas
30、ed on the destination side . 43g37.3.3.2 Bearer released on the originating side . 43g37.3.4 Call Clearing procedures towards MGW 44g3ETSI ETSI TS 123 231 V13.0.0 (2016-01)53GPP TS 23.231 version 13.0.0 Release 138 Handover/Relocation 44g38.1 UMTS to UMTS . 44g38.1.1 Intra-MSC SRNS/SBSS Relocation .
31、 44g38.1.1.1 Intra-MGW Relocation . 44g38.1.1.2 Inter-MGW Relocation . 44g38.1.2 Basic Inter-MSC SRNS/SBSS Relocation 44g38.1.3 Subsequent Inter-MSC SRNS/SBSS Relocation back to the Anchor MSC . 44g38.1.4 Subsequent Inter-MSC SRNS/SBSS Relocation to a third MSC . 44g38.1.5 SRNS/SBSS Relocation with
32、Iu on IP 45g38.2 UMTS to GSM . 45g38.2.1 Intra-MSC UMTS to GSM Handover . 45g38.2.1.1 Intra-MGW Relocation . 45g38.2.1.2 Inter-MGW Relocation . 45g38.2.1.3 Intra-MSC UMTS to GSM Handover for A interface over IP 45g38.2.2 Basic Inter-MSC UMTS to GSM Handover . 45g38.2.2.1 Basic Inter-MSC UMTS to GSM
33、Handover for A Interface over IP 45g38.2.3 Subsequent Inter-MSC UMTS to GSM Handover back to the Anchor MSC . 45g38.2.3.1 Subsequent Inter-MSC UMTS to GSM Handover back to the anchor MSC for A Interface over IP . 45g38.2.4 Subsequent Inter-MSC UMTS to GSM Handover to a third MSC . 46g38.3 GSM to UMT
34、S . 46g38.3.1 Intra-MSC GSM to UMTS Handover . 46g38.3.1.1 Intra-MGW Relocation . 46g38.3.1.2 Inter-MGW Relocation . 46g38.3.2 Basic Inter-MSC GSM to UMTS Handover . 46g38.3.3 Subsequent Inter-MSC GSM to UMTS Handover back to the Anchor MSC . 46g38.3.4 Subsequent Inter-MSC GSM to UMTS Handover to a
35、third MSC . 46g38.3.5 GSM to UMTS Handover with Iu on IP . 46g38.4 GSM to GSM . 47g38.4.1 Intra-MSC Inter-BSS GSM to GSM Handover 47g38.4.1.1 Intra-MGW Relocation . 47g38.4.1.2 Inter-MGW Relocation . 47g38.4.1.3 Intra-MSC GSM to GSM Handover for A interface over IP 47g38.4.2 Basic Inter-MSC GSM to G
36、SM Handover . 47g38.4.2.1 Basic Inter-MSC GSM to GSM Handover for A Interface over IP 47g38.4.3 Subsequent Inter-MSC GSM to GSM Handover back to the Anchor MSC . 47g38.4.3.1 Subsequent Inter-MSC GSM to GSM Handover back to the anchor MSC for A Interface over IP . 47g38.4.4 Subsequent GSM to GSM Hand
37、over to a third MSC . 47g38.4.5 BSS Internal Handover . 48g39 Compatibility Issues . 48g39.1 Compatibility Issues for Nc Interface . 48g39.2 Compatibility Issues for Mc Interface 48g310 General (G)MSC server-MGW Procedures . 48g310.1 MGW Unavailable . 48g310.2 MGW Available . 48g310.3 MGW Recovery .
38、 48g310.4 (G)MSC server Recovery . 48g310.5 MGW Re-register . 48g310.6 MGW Re-registration Ordered by (G)MSC server 48g310.7 Removal from Service of a Physical Termination 48g310.8 Restoration to Service of a Physical Termination 49g310.9 Audit of MGW . 49g310.10 MGW Capability Change . 49g310.11 (G
39、)MSC Server Out of service . 49g310.12 MGW Resource Congestion Handling - Activate 49g310.13 MGW Resource Congestion Handling -Indication . 49g310.14 Control association monitoring 49g310.15 Hanging termination detection . 49g311 Identities . 49g311.1 Telephone numbering schemes 49g3ETSI ETSI TS 123
40、 231 V13.0.0 (2016-01)63GPP TS 23.231 version 13.0.0 Release 1311.2 (G)MSC Server Identity . 49g311.3 Sub-addressing . 49g312 Operational Aspects . 50g312.1 Charging . 50g312.2 SIP session continuity 50g312.2.1 Use of SIP session timer . 50g312.2.2 Example call flow . 50g313 Interactions with Other
41、Services 51g313.1 Enhanced Multi-Level Precedence and Pre-emption service (eMLPP) 51g313.2 Call Deflection Service 51g313.3 Line identification Services 51g313.3.1 Calling Line Identification Presentation (CLIP) . 51g313.3.2 Calling Line Identification Restriction (CLIR) . 51g313.3.3 Connected Line
42、Identification Presentation (COLP) 52g313.3.4 Connected Line Identification Restriction (COLR) 52g313.4 Call Forwarding Services . 52g313.4.0 Principles 52g313.4.1 Call Forwarding Unconditional (CFU) . 52g313.4.2 Call Forwarding on mobile subscriber Busy (CFB) . 52g313.4.2.1 Network Determined User
43、Busy (NDUB) 52g313.4.2.1.1 Initial INVITE . 52g313.4.2.1.2 Confirmation of bearer establishment . 52g313.4.2.2 User Determined User Busy (UDUB) . 53g313.4.2.2.1 Initial INVITE . 53g313.4.2.2.2 Confirmation of bearer establishment . 53g313.4.3 Call Forwarding on No Reply (CFNRy) . 53g313.4.3.1 Initia
44、l INVITE . 53g313.4.4 Call Forwarding on mobile subscriber Not Reachable (CFNRc) 54g313.4.4.1 Initial INVITE. 54g313.4.4.2 Confirmation of bearer establishment . 54g313.5 Call Waiting (CW) . 54g313.6 Call Hold (CH) . 54g313.6.1 Principles 54g313.6.2 Hold Request 54g313.6.3 Retrieval Request 55g313.7
45、 Multiparty (MPTY) 55g313.7.1 Introduction. 55g313.7.2 Beginning the Multi Party call 55g313.7.3 Managing an active Multi Party call . 56g313.7.4 Disconnect 56g313.7.5 Failure handling in MSC server 56g313.7.6 Example 1 . 56g313.8 Closed User Group (CUG) . 58g313.9 Advice of Charge (AoC) 58g313.10 U
46、ser-to-User Signalling (UUS) 59g313.11 Call Barring Services 59g313.11.1 Barring of outgoing calls 59g313.11.2 Barring of incoming calls other than Anonymous Call Rejection 59g313.11.3 Anonymous Call Rejection (ACR) . 59g313.12 Explicit Call Transfer (ECT) 59g313.12.1 Example 59g313.13 Completion of
47、 Calls to Busy Subscriber (CCBS). 60g313.14 Multiple Subscriber Profile (MSP) . 60g313.15 Multicall . 60g313.16 Calling Name Presentation (CNAP) . 60g313.17 Alternate Speech/Fax . 60g313.18 Modification of the Access Bearer . 61g313.18.1 Modification of Bearer Characteristics . 61g313.18.2 IWF Proto
48、col Change . 61g313.19 GSM Fax 61g3ETSI ETSI TS 123 231 V13.0.0 (2016-01)73GPP TS 23.231 version 13.0.0 Release 1313.20 Voice group call service (VGCS), Voice broadcast service (VBS) 61g314 Interactions with Other Network Features and Services 61g314.1 Customised Applications for Mobile network Enha
49、nced Logic (CAMEL) . 61g314.1.1 Play Announcement/Send Tone 61g314.1.2 User Interaction 62g314.1.3 Call Party Handling (CPH) . 62g314.2 IST 62g314.3 Operator Determined Barring (ODB) . 62g314.4 DTMF . 62g314.4.1 General 62g314.4.2 DTMF handling in SIP-I Offer/Answer 63g314.4.3 Server to MGW Procedures 63g314.4.4 RTP Telephony Event DTMF Digit Generation . 64g314.4.4.1 General 64g314.4.4.2 Start DTMF . 64g314.4.4.3 Stop DTMF . 64g314.4.4.4 Example 64g314.4.5 DTMF Tone Generation . 64g314.4.6 RTP Telephony Event DTMF Digit Detection . 65g314.4.6.1 General 65g314.4.6.2 Detect DT
