1、 ETSI TS 103 389 V3.1.1 (2017-05) Railway Telecommunications (RT); Global System for Mobile communications (GSM); Usage of Session Initiation Protocol (SIP) on the Network Switching Subsystem (NSS) to Fixed Terminal Subsystem (FTS) interface for GSM Operation on Railways TECHNICAL SPECIFICATION ETSI
2、 ETSI TS 103 389 V3.1.1 (2017-05)2 Reference RTS/RT-0044 Keywords GSM-R, railways 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 Gras
3、se (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 versions of the present document shall not be modified wit
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8、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. oneM2M logo is protected for the benefit of its Members GSM and the GSM logo are Trade Marks registered and own
9、ed by the GSM Association. ETSI ETSI TS 103 389 V3.1.1 (2017-05)3 Contents Intellectual Property Rights 5g3Foreword . 5g3Modal verbs terminology 5g3Introduction 5g31 Scope 7g32 References 7g32.1 Normative references . 7g32.2 Informative references 9g33 Definitions and abbreviations . 10g33.1 Definit
10、ions 10g33.2 Abbreviations . 12g34 Reference System Architecture 13g35 Interface Functionality . 14g35.0 General Description 14g35.1 Basic Call . 15g35.1.0 Primary Function 15g35.1.1 Progress Indication . 15g35.1.2 Early Media 15g35.2 Connected Parties Identity Information 15g35.3 Call Hold 15g35.4
11、Multi Level Precedence and Pre-emption 15g35.5 Voice Group Call and Broadcast Call Control . 15g35.6 User-User-Information-Element Transport 16g35.7 Reason Transport 16g35.8 Call Transfer Notification 16g35.9 Conferencing 16g35.10 Call Forwarding 16g35.11 Call Waiting . 17g36 Signalling Interface 17
12、g36.1 Network Layer Protocol . 17g36.2 Transport Layer Protocol 17g36.3 Signalling Protocol . 17g36.3.0 General Provisions 17g36.3.1 SIP Entities . 18g36.3.1.0 SIP networks . 18g36.3.1.1 SIP User Agent 18g36.3.1.2 SIP Proxy 18g36.3.2 SIP Request Methods 18g36.3.3 SIP Responses . 19g36.3.4 SIP Header
13、 Fields . 19g36.3.5 SIP Bodies 21g36.3.6 SIP URI Convention . 22g36.3.6.0 General provisions 22g36.3.6.1 Display Name 23g36.3.6.2 User Part 23g36.3.6.3 Host Part 23g36.3.6.4 URI Parameters . 24g36.3.6.5 Use 24g36.3.6.6 Examples . 25g36.3.7 Option Tags 26g36.3.8 Feature Parameter . 26g36.4 Interface
14、Functionality to Signalling Interface Mapping 26g3ETSI ETSI TS 103 389 V3.1.1 (2017-05)4 6.4.0 General 26g36.4.1 Basic Call 26g36.4.2 Connected Parties Identity Information 28g36.4.3 Media Session Renegotiation and Call Hold 30g36.4.4 Early Media 32g36.4.5 Multi Level Precedence and Pre-emption . 34
15、g36.4.5.0 General Provisions 34g36.4.5.1 Resource Priority. 35g36.4.5.2 Reason Indication for Precedence and Pre-emption Events 35g36.4.5.3 Signalling Procedure for Precedence Call Blocking . 35g36.4.5.4 Signalling Procedure for Pre-emption . 36g36.4.6 Group Call and Broadcast Call Control 37g36.4.7
16、 User-to-User-Information-Element Transport 37g36.4.8 Release Cause Transport . 37g36.4.9 SIP Session Timer . 38g36.4.10 OPTIONS Processing . 39g36.4.10.0 General Provisions 39g36.4.10.1 OPTIONS Heartbeating 40g36.4.11 Signalling for Group Call and Broadcast Call Control . 40g36.4.12 Call Transfer N
17、otification . 42g36.4.13 Conferencing. 45g36.4.14 Call Forwarding 48g36.4.15 Call Waiting 50g37 Media Interface 51g37.1 Network Layer Protocol . 51g37.2 Transport Layer Protocol 51g37.3 Real-Time Transport Protocol 51g37.3.0 General Provisions 51g37.3.1 Media inactivity detection 52g37.4 Media Codec
18、s . 52g37.4.0 General Provisions 52g37.4.1 DTMF . 52g38 Recorder Interface 53g38.1 Reference Architecture . 53g38.2 Interface Functionality . 54g38.2.0 General 54g38.2.1 Recording Session 54g38.3 Signalling Interface 54g38.4 Media interface . 57g38.4.0 General 57g38.4.1 Media mixing 57g38.4.2 Multip
19、le streams . 57g3Annex A (normative): Locating SIP Entities . 58g3Annex B (informative): Quality of Service framework . 61g3Annex C (informative): Security Framework 62g3Annex D (informative): Mapping of EIRENE to Interface Features . 63g3Annex E (informative): Group Call Control Scenarios 65g3Annex
20、 F (informative): Bibliography . 67g3History 68g3ETSI ETSI TS 103 389 V3.1.1 (2017-05)5 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 E
21、TSI 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 server (https:/
22、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 become, essentia
23、l to the present document. Foreword This Technical Specification (TS) has been produced by ETSI Technical Committee Railway Telecommunications (RT). Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“
24、 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. Introduction While a number of interoperability specifications for various int
25、erfaces at various layers of GSM-R systems exist, the interface between the Network Switching Subsystem (NSS) and the Fixed Terminal Subsystem (FTS) has not yet been addressed by any interoperability specification activity. In most of the GSM-R system deployments available at the time of the creatio
26、n of the present document, the Network Switching Subsystem and the Fixed Terminal Subsystem are interconnected using TDM based interfaces such as DSS1 i.2. ETSI TS 102 610 9 specifies the usage and format of UUIE for call-related end-to-end functionality in GSM-R systems but no other interworking to
27、pics. The present document addresses the interoperability specification gap between the Network Switching Subsystem and the Fixed Terminal Subsystem with an interface based on the Internet Protocol (IP) 2, the Session Initiation Protocol (SIP) 3, the Session Description Protocol (SDP) 6 and the Real
28、-Time Transport Protocol (RTP) 7. In addition to the table of contents, the following explanation will help you navigate through and understand the contents of the present document: Clauses 1 to 3 are predefined by ETSI. Clause 4 shows and explains the reference system architecture and identifies th
29、e interface(s) for the present document. Clause 5 holds the functional requirements for the interface subject to the present document. Clause 6 specifies in detail the signalling interface for all supported functions and services. Clause 7 specifies in detail the media interface. Clause 8 specifies
30、the additions and changes for a voice recorder interface. ETSI ETSI TS 103 389 V3.1.1 (2017-05)6 Annex A explains the mechanism to locate SIP entities at the present interface. Annex B contains recommendations on the use and implementation of standardized Quality of Service mechanisms at the present
31、 interface. Annex C contains recommendations about the security mechanisms. Annex D contains a mapping table of EIRENE 1 to interface features. Annex E contains a description of group call control scenarios. ETSI ETSI TS 103 389 V3.1.1 (2017-05)7 1 Scope The present document defines the signalling a
32、nd media interface between the Network Switching Subsystem and the Fixed Terminal Subsystem in order to provide a clear set of services needed for GSM-R operations. This includes voice call service and available call-related supplementary services. In addition, requirements for specific implementati
33、on of the signalling and media interface within either the Network Switching Subsystem or the Fixed Terminal Subsystem are stated where applicable. The present document addresses the Internet Layer and upwards of the Internet Protocol Suite IETF RFC 1122 i.18 on the signalling and media interface. A
34、ny service other than voice call service and call-related supplementary services (such as data services, Short Message Service, etc.) is out of scope of the present document; additional features may be addressed in future releases. The present document does not specify any other interface between th
35、e Network Switching Subsystem and the Fixed Terminal Subsystem nor does it cover any internal interfaces of either NSS or FTS. Such interfaces may be addressed in a future release of the present document. The present document does not address any specific 3GPP Release or Architecture. 2 References 2
36、.1 Normative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amend
37、ments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The
38、following referenced documents are necessary for the application of the present document. 1 UIC P001D010 (Version 15.1): “UIC Project EIRENE System Requirements Specification“. NOTE: Available at http:/www.uic.org/IMG/pdf/eirene_srs_15.1.pdf. 2 IETF RFC 791 (1981): “Internet Protocol“. 3 IETF RFC 32
39、61 (2002): “SIP: Session Initiation Protocol“. 4 IETF RFC 3264 (2002): “An Offer/Answer Model Session Description Protocol (SDP)“. 5 IETF RFC 4733 (2006): “RTP Payload for DTMF Digits, Telephony Tones, and Telephony Signals“. 6 IETF RFC 4566 (2006): “SDP: Session Description Protocol“. 7 IETF RFC 35
40、50 (2003): “RTP: A Transport Protocol for Real-Time Applications“. 8 IETF RFC 3326 (2002): “The Reason Header Field for the Session Initiation Protocol (SIP)“. 9 ETSI TS 102 610 (V1.1.0): “Railways Telecommunications (RT); Global System for Mobile communications (GSM); Usage of the User to User Info
41、rmation Element for GSM Operation on Railways“. 10 IETF RFC 5234 (2008): “Augmented BNF for Syntax Specifications: ABNF“. 11 IETF RFC 3262 (2002): “Reliability of Provisional Responses in Session Initiation Protocol (SIP)“. ETSI ETSI TS 103 389 V3.1.1 (2017-05)8 12 IETF RFC 4412 (2006): “Communicati
42、ons Resource Priority for the Session Initiation Protocol (SIP)“. 13 IETF RFC 3325 (2002): “Private Extensions to the Session Initiation Protocol (SIP) for Asserted Identity within Trusted Networks“. 14 IETF RFC 5876 (2010): “Updates to Asserted Identity in the Session Initiation Protocol (SIP)“. 15
43、 IETF RFC 3323 (2002): “A Privacy Mechanism for the Session Initiation Protocol (SIP)“. 16 IETF RFC 4028 (2005): “Session Timers in the Session Initiation Protocol (SIP)“. 17 IETF RFC 3311 (2002): “The Session Initiation Protocol (SIP) UPDATE Method“. 18 Void. 19 Void. 20 Void. 21 Void. 22 Recommend
44、ation ITU-T Q.850 (1998): “Usage of cause and location in the Digital Subscriber Signalling System No. 1 and the Signalling System No. 7 ISDN user part“. 23 Recommendation ITU-T E.164 (2010): “The international public telecommunication numbering plan“. 24 Recommendation ITU-T Q.955.3 (1993): “Stage
45、3 description for community of interest supplementary services using DSS 1: Multi-level precedence and pre-emption (MLPP)“. 25 IETF RFC 3986 (2005): “Uniform Resource Identifier (URI): Generic Syntax“. 26 IETF RFC 768 (1980): “User Datagram Protocol“. 27 Recommendation ITU-T G.711 (1988): “Pulse cod
46、e modulation (PCM) of voice frequencies“. 28 IETF RFC 2833 (2000): “RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals“. 29 Void. 30 IETF RFC 3840 (2004): “Indicating User Agent Capabilities in the Session Initiation Protocol (SIP)“. 31 IETF RFC 4574 (2006): “The Session Description
47、Protocol (SDP) Label Attribute“. 32 Recommendation ITU-T I.255.3 (1990): “Multi-Level Precedence and Pre-emption service“. 33 IETF RFC 4579 (2006): “Session Initiation Protocol (SIP) Call Control - Conferencing for User Agents“. 34 IETF RFC 3891 (2004): “The Session Initiation Protocol (SIP) “Replac
48、es“ Header“. 35 IETF RFC 7462 (2015): “URNs for the Alert-Info Header Field of the Session Initiation Protocol (SIP)“. 36 IETF RFC 4244 (2005): “An Extension to the Session Initiation Protocol (SIP) for Request History Information“. 37 IETF RFC 4458 (2006): “Session Initiation Protocol (SIP) URIs fo
49、r Applications such as Voicemail and Interactive Voice Response (IVR)“. 38 ETSI TS 129 163 (V12.13.0): “Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Interworking between the IP Multimedia (IM) Core Network (CN) subsystem and Circuit Switched (CS) networks (3GPP TS 29.163 version 12.13.0 Release 12)“. ETSI ETSI TS 103 389 V3.1.1 (2017-05)9 2.2 Informative references References are either speci
