1、 ETSI TS 124 525 V15.0.0 (2018-06) Universal Mobile Telecommunications System (UMTS); LTE; Business trunking; Architecture and functional description (3GPP TS 24.525 version 15.0.0 Release 15) TECHNICAL SPECIFICATION ETSI ETSI TS 124 525 V15.0.0 (2018-06)13GPP TS 24.525 version 15.0.0 Release 15Refe
2、rence RTS/TSGC-0124525vf00 Keywords 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 but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice Th
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9、ersion 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 essential IPRs, if any, is publicly available for ETSI members and non-members, and can be foun
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13、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 by ETSI 3rd Generation Partnership Project (3GPP). The present document may refer to tec
14、hnical 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 GSM, UMTS, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/key/queryf
15、orm.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 the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “mu
16、st not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 124 525 V15.0.0 (2018-06)33GPP TS 24.525 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 6g31 Scope 7g32 References 7g33 Definitions, s
17、ymbols and abbreviations . 9g33.1 Definitions 9g33.2 Abbreviations . 9g34 Overview 9g34.1 General principles. 9g34.2 Access network interconnection . 9g34.3 Service level layer interconnection 10g35 Functional architecture . 11g35.1 General . 11g35.2 Subscription based business trunking . 11g35.2.1
18、General 11g35.2.2 Used functional entities at the service layer 11g35.2.3 Used reference points at the service layer . 11g35.2.4 Used functional entities at the transport layer . 12g35.2.5 Used reference points at the transport layer 12g35.3 Peering-based business trunking 12g35.3.1 General 12g35.3.
19、2 Used functional entities at the service layer 13g35.3.3 Used reference points at the service layer . 14g35.3.4 Used functional entities at the transport layer . 14g35.3.5 Used reference points at the transport layer 14g35.4 Session-level virtual leased line . 15g35.4.1 General 15g35.4.2 Used funct
20、ional entities at the service layer 15g35.4.3 Used reference points at the service layer . 15g35.4.4 Used functional entities at the transport layer . 15g35.4.5 Used reference points at the transport layer 15g35.5 Support for roaming NGCN user . 16g35.5.1 General 16g35.5.2 Used functional entities a
21、t the service layer 16g35.5.3 Used reference points at the service layer . 16g35.5.4 Used functional entities at the transport layer . 16g35.5.5 Used reference points at the transport layer 16g35.6 Support for roaming NGN user 16g36 Procedures 17g36.1 Subscription based business trunking . 17g36.1.1
22、 Introduction. 17g36.1.2 Identification . 17g36.1.3 Registration . 17g36.1.4 Requests originating from an NGCN user entering NGN. 18g36.1.4.1 General 18g36.1.4.2 NGCN not considered as privileged sender and not trusted by NGN . 19g36.1.4.3 NGCN considered as privileged sender and trusted by NGN . 20
23、g36.1.4.4 NGCN considered as privileged sender and not trusted by NGN . 20g36.1.5 Requests terminating to an NGCN user leaving NGN 20g36.1.5.1 General 20g36.1.5.2 NGCN not considered as privileged sender and not trusted by NGN . 22g36.1.5.3 NGCN considered as privileged sender and trusted by NGN . 2
24、2g36.1.5.4 NGCN considered as privileged sender and not trusted by NGN . 22g3ETSI ETSI TS 124 525 V15.0.0 (2018-06)43GPP TS 24.525 version 15.0.0 Release 156.1.6 Business trunking applications . 22g36.1.6.1 General 22g36.1.6.2 Routeing capabilities . 22g36.1.6.2.1 Overview . 22g36.1.6.2.2 Break-in .
25、 23g36.1.6.2.3 Break-out . 23g36.1.6.2.4 Bulk rerouting 23g36.1.6.3 Communication admission control 23g36.1.6.4 Anonymous communication rejection. 23g36.1.6.5 Communication barring 23g36.1.7 Signalling transparency . 24g36.1.8 Involvement of functions on the media path . 24g36.1.8.1 General 24g36.1.
26、8.2 DTMF . 24g36.1.8.3 Codecs . 24g36.1.9 Handling of the P-Access-Network-Info header field. 24g36.1.10 Emergency calls 25g36.1.11 Charging . 25g36.1.12 Advice of Charge 25g36.1.13 NAT traversal . 25g36.1.14 Private network traffic 26g36.1.15 P-CSCF and IP-CAN redundancy 26g36.2 Peering-based busin
27、ess trunking 27g36.2.1 Introduction. 27g36.2.2 Identification . 27g36.2.3 Registration . 27g36.2.4 Requests originating from an NGCN user entering NGN. 27g36.2.4.1 General 27g36.2.4.2 NGCN not trusted by NGN . 27g36.2.4.3 NGCN trusted by NGN . 28g36.2.5 Requests terminating to an NGCN user leaving N
28、GN 28g36.2.5.1 General 28g36.2.5.2 NGCN not trusted by NGN . 28g36.2.5.3 NGCN trusted by NGN . 29g36.2.6 Business trunking application . 29g36.2.6.1 General 29g36.2.6.2 Routeing related business trunking applications . 29g36.2.6.2.0 General 29g36.2.6.2.1 Originating requests . 29g36.2.6.2.2 Terminat
29、ing responses to an originating request . 29g36.2.6.2.3 Terminating requests . 30g36.2.6.3 Communication admission control 30g36.2.6.4 Anonymous communication rejection. 30g36.2.6.5 Communication barring 30g36.2.7 Signalling transparency . 30g36.2.8 Involvement of functions on the media path . 30g36
30、.2.9 Handling of the P-Access-Network-Info header field. 30g36.2.10 Emergency calls 30g36.2.11 Charging . 31g36.2.12 Advice of Charge 31g36.2.13 NAT traversal . 31g36.2.14 Private network traffic 31g36.3 Session-level virtual leased line between NGCN sites . 31g36.3.1 Introduction. 31g36.3.2 Identif
31、ication . 31g36.3.3 Registration . 32g36.3.4 Session originating from a NGCN user entering NGN . 32g36.3.4.1 General 32g36.3.4.2 NGCN not trusted by NGN . 32g36.3.4.3 NGCN trusted by NGN . 32g36.3.5 Session terminating to an NGCN user leaving NGN 32g36.3.5.1 General 32g3ETSI ETSI TS 124 525 V15.0.0
32、(2018-06)53GPP TS 24.525 version 15.0.0 Release 156.3.5.2 NGCN not trusted by NGN . 32g36.3.5.3 NGCN trusted by NGN . 32g36.3.6 Business trunking applications . 32g36.3.7 Signalling transparency . 32g36.3.8 Involvement of functions on the media path . 32g36.3.9 Handing of the P-Access-Network-Info h
33、eader 32g36.3.10 Emergency calls 33g36.3.11 Charging . 33g36.3.12 Advice of Charge 33g36.3.13 NAT traversal . 33g36.3.14 Private network traffic 33g36.4 NGCN user roaming into NGN public network . 33g36.4.1 Introduction. 33g36.4.2 Identification . 33g36.4.3 Registration . 33g36.4.4 Requests originat
34、ing from an NGCN user roaming in NGN 33g36.4.5 Requests terminating on an NGCN user roaming in NGN . 34g36.4.6 Business trunking applications . 34g36.4.7 Signalling transparency . 34g36.4.8 Involvement of functions on the media path . 34g36.4.9 Handing of the P-Access-Network-Info header 34g36.4.10
35、Emergency calls 34g36.4.11 Charging . 34g36.4.12 Advice of Charge 34g36.4.13 NAT traversal . 34g36.4.14 Private network traffic 34g37 Use of transport functions 35g37.1 Use of transport control sublayer . 35g37.1.1 Use of NASS. 35g37.1.2 Use of RACS 35g37.1.3 Use of PCC . 35g37.2 Use of transport pr
36、ocessing functions 35g38 Security. 35g39 Management . 36g3Annex A (informative): Example signalling flows of business trunking and roaming arrangements 37g3A.1 Scope of signalling flows . 37g3A.2 Introduction 37g3A.3 Signalling flows for registration . 37g3A.3.1 Introduction 37g3A.3.2 Registration o
37、f a roaming NGCN UE visiting an NGN/IMS with which the NGCN has a direct roaming agreement . 37g3A.3.2.1 General 37g3A.3.2.2 Signalling flow for registration of a roaming NGCN UE visiting an NGN/IMS with which the NGCN has a direct roaming agreement 38g3A.3.2.3 Overview of routing decisions 43g3A.4
38、Signalling flows for call origination . 44g3A.5 Signalling flows for call termination 44g3Annex B (informative): Service Level Agreement (SLA) considerations 45g3Annex C (informative): Void . 46g3Annex D (informative): Change history . 47g3History 48 ETSI ETSI TS 124 525 V15.0.0 (2018-06)63GPP TS 24
39、.525 version 15.0.0 Release 15Foreword 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 o
40、f 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 document
41、 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 124 525 V15.0.0 (2018-06)73GPP TS 24.525 ve
42、rsion 15.0.0 Release 151 Scope The present document provides architecture and functional requirements for business trunking for the Next Generation Network (NGN). The present document also specifies the protocol requirements for the Next Generation Corporate Networks (NGCNs) to attach to the NGN (in
43、 particular the IM CN subsystem) and also any protocol requirements relation to application servers provided in support of business trunking. Business trunking is a set of NGN capabilities that may be applied to communications between NGCNs using the NGN as a transit. 2 References The following docu
44、ments 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.) or non-specific. For a specific reference, subsequent revisions do not apply. For a
45、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 same Release as the present document. 1 3GPP TS 22.519: “Business Communication Requi
46、rements“. 2 ETSI ES 282 001 (V3.4.1): “Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); NGN Functional Architecture“. 3 ETSI ES 282 004 (V2.0.0): “Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); NGN
47、Functional Architecture; Network Attachment Sub-System (NASS)“. 4 ETSI ES 282 007 (V2.1.1): “Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN);IP Multimedia Subsystem (IMS);Functional architecture“. 5 Void. 6 3GPP TS 32.260: “Telecommunication manageme
48、nt; Charging management; IP Multimedia Subsystem (IMS) charging“. 7 3GPP TS 24.523: “Core and enterprise NGN interaction scenarios; Architecture and functional description“. 8 3GPP TS 24.611: “Anonymous Communication Rejection (ACR) and Communication Barring (CB) using IP Multimedia (IM) Core Networ
49、k (CN) subsystem; Protocol specification“. 9 ETSI TS 183 019 (V.2.3.0): “Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); Network Attachment; User-Network Interface Protocol Definitions“. 10 3GPP TS 24.628: “Common Basic Communication procedures using IP Multimedia (IM) Core Network (CN) subsystem; Protocol specification“. 11 ETSI ES 283 035 (V.2.6.2): “Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); Network Attachment Sub-System (NASS); e2 interface based
