1、 ETSI TS 102 166 V1.2.1 (2007-01)Technical Specification Corporate telecommunication Networks (CN);Signalling interworking between QSIG and SIP;Basic servicesETSI ETSI TS 102 166 V1.2.1 (2007-01) 2 Reference RTS/ECMA-00347 Keywords PISN, QSIG, signalling, SIP ETSI 650 Route des Lucioles F-06921 Soph
2、ia 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 Individual copies of the present document can be downloaded from: http:/www.etsi.org Th
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5、/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http:/portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing re
6、striction extend to reproduction in all media. European Telecommunications Standards Institute 2007. All rights reserved. DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members. TIPHONTMand the TIPHON logo are Trade Marks currently being registered by ETSI f
7、or the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. ETSI ETSI TS 102 166 V1.2.1 (2007-01) 3 Contents Intellectual Property Rights6 Foreword.6 Introduction 6 1 Scope 7 2 Conformance 7 3 References 8 4 Termino
8、logy and Definitions .9 4.1 External Definitions .9 4.2 Other definitions.9 4.2.1 Corporate Telecommunication Network (CN) .9 4.2.2 Gateway 9 4.2.3 IP Network9 4.2.4 Media Stream9 4.2.5 Private Integrated Services Network (PISN) 9 4.2.6 Private Integrated Services Network Exchange (PINX).9 5 Acronym
9、s .10 6 Background and Architecture.10 7 General Requirements 12 8 Message Mapping Requirements .13 8.1 Message Validation and Handling of Protocol Errors13 8.2 Call Establishment from QSIG to SIP14 8.2.1 Call Establishment from QSIG to SIP Using En Bloc Procedures .14 8.2.1.1 Receipt of QSIG SETUP
10、Message14 8.2.1.2 Receipt of SIP 100 (Trying) Response to an INVITE Request.14 8.2.1.3 Receipt of SIP 18x provisional response to an INVITE request .14 8.2.1.4 Receipt of SIP 2xx Response to an INVITE Request .15 8.2.1.5 Receipt of SIP 3xx Response to an INVITE Request .15 8.2.2 Call Establishment f
11、rom QSIG to SIP Using Overlap Procedures .15 8.2.2.1 En Bloc Signalling in SIP Network.15 8.2.2.1.1 Receipt of QSIG SETUP Message 15 8.2.2.1.2 Receipt of QSIG INFORMATION Message.16 8.2.2.1.3 Receipt of SIP Responses to INVITE Requests 16 8.2.2.2 Overlap Signalling in SIP Network.16 8.2.2.2.1 Receip
12、t of QSIG SETUP Message 16 8.2.2.2.2 Receipt of QSIG INFORMATION Message.16 8.2.2.2.3 Receipt of SIP 100 (Trying) Response to an INVITE Request .16 8.2.2.2.4 Receipt of SIP 18x Provisional Response to an INVITE Request.16 8.2.2.2.5 Receipt of SIP 2xx Response to an INVITE Request17 8.2.2.2.6 Receipt
13、 of SIP 3xx Response to an INVITE Request17 8.2.2.2.7 Receipt of a SIP 4xx, 5xx, or 6xx Final Response to an INVITE Request17 8.2.2.2.8 Receipt of Multiple SIP Responses to an INVITE Request 17 8.2.2.2.9 Cancelling Pending SIP INVITE Transactions .17 8.2.2.2.10 QSIG Timer T302 Expiry17 8.3 Call Esta
14、blishment from SIP to QSIG18 8.3.1 Receipt of SIP INVITE Request for a New Call.18 8.3.2 Receipt of QSIG CALL PROCEEDING Message .18 8.3.3 Receipt of QSIG PROGRESS Message18 8.3.4 Receipt of QSIG ALERTING Message19 8.3.5 Inclusion of SDP Information in a SIP 18x Provisional Response .19 8.3.6 Receip
15、t of QSIG CONNECT Message.19 8.3.7 Receipt of SIP PRACK Request.20 ETSI ETSI TS 102 166 V1.2.1 (2007-01) 4 8.3.8 Receipt of SIP ACK Request20 8.3.9 Receipt of a SIP INVITE Request for a Call Already Being Established.20 8.4 Call Clearing and Call Failure21 8.4.1 Receipt of a QSIG DISCONNECT, RELEASE
16、, or RELEASE COMPLETE Message.21 8.4.2 Receipt of a SIP BYE Request22 8.4.3 Receipt of a SIP CANCEL Request23 8.4.4 Receipt of a SIP 4xx-6xx Response to an INVITE Request .23 8.4.5 Gateway-Initiated Call Clearing .24 8.5 Request to Change Media Characteristics 24 9 Number Mapping .24 9.1 Mapping fro
17、m QSIG to SIP25 9.1.1 Using Information from the QSIG Called Party Number Information Element .25 9.1.2 Using Information from the QSIG Calling Party Number Information Element25 9.1.2.1 No URI derived, and presentation indicator does not have value “presentation restricted“25 9.1.2.2 No URI derived
18、, and presentation indicator has value “presentation restricted“ 25 9.1.2.3 URI derived, and presentation indicator has value “presentation restricted“ 25 9.1.2.4 URI derived, and presentation indicator does not have value “presentation restricted“26 9.1.3 Using Information from the QSIG Connected N
19、umber Information Element26 9.1.3.1 No URI derived, and presentation indicator does not have value “presentation restricted“26 9.1.3.2 No URI derived, and presentation indicator has value “presentation restricted“ 26 9.1.3.3 URI derived, and presentation indicator has value “presentation restricted“
20、 26 9.1.3.4 URI derived, and presentation indicator does not have value “presentation restricted“26 9.2 Mapping from SIP to QSIG26 9.2.1 Generating the QSIG Called Party Number Information Element27 9.2.2 Generating the QSIG Calling Party Number Information Element 27 9.2.3 Generating the QSIG Conne
21、cted Number Information Element 27 10 Requirements for Support of Basic Services28 10.1 Derivation of QSIG Bearer Capability Information Element.28 10.2 Derivation of Media Type in SDP28 11 Security Considerations29 11.1 General .29 11.2 Calls from QSIG to Invalid or Restricted Numbers .29 11.3 Abus
22、e of SIP Response Code.29 11.4 Use of the To Header URI29 11.5 Use of the From Header URI30 11.6 Abuse of Early Media.30 11.7 Protection from Denial-of-Service Attacks 30 Annex A (normative): Implementation Conformance Statement (ICS) proforma31 A.1 Introduction 31 A.1.1 Purpose of an ICS proforma.3
23、1 A.2 Instructions for completing the ICS proforma31 A.2.1 General structure of the ICS proforma .31 A.2.2 Additional Information.32 A.2.3 Exception Information32 A.2.4 Further indications of the ICS proforma tables 32 A.3 Identification of the implementation 33 A.3.1 Implementation identification 3
24、3 A.3.2 Specification for which this ICS applies 33 A.4 General requirements .33 A.5 Call establishment from QSIG to SIP using en bloc procedures34 A.6 Call establishment from QSIG to SIP using overlap procedures in QSIG network and en bloc procedures in SIP network .34 A.7 Call establishment from Q
25、SIG to SIP using overlap procedures in QSIG network and in SIP network.35 ETSI ETSI TS 102 166 V1.2.1 (2007-01) 5 A.8 Call establishment from SIP to QSIG 35 A.9 Call clearing and call failure 36 A.10 Other requirements.36 Annex B (informative): Example Message Sequences 37 B.1 Introduction 37 B.2 Me
26、ssage Sequences for Call Establishment from QSIG to SIP .37 B.2.1 QSIG to SIP, using en bloc procedures on both QSIG and SIP .37 B.2.2 QSIG to SIP, using overlap receiving on QSIG and en bloc sending on SIP.38 B.2.3 QSIG to SIP, using overlap procedures on both QSIG and SIP .40 B.3 Message sequences
27、 for call establishment from SIP to QSIG41 B.3.1 SIP to QSIG, using en bloc procedures 41 B.3.2 SIP to QSIG, using overlap receiving on SIP and en bloc sending on QSIG.42 B.3.3 SIP to QSIG, using overlap procedures on both SIP and QSIG .43 B.4 Message Sequence for Call Clearing from QSIG to SIP44 B.
28、4.1 QSIG to SIP, subsequent to call establishment 44 B.4.2 QSIG to SIP, during establishment of a call from SIP to QSIG.45 B.4.3 QSIG to SIP, during establishment of a call from QSIG to SIP.45 B.5 Message Sequence for Call Clearing from SIP to QSIG46 B.5.1 SIP to QSIG, subsequent to call establishme
29、nt 46 B.5.2 SIP to QSIG, during establishment of a call from QSIG to SIP.47 B.5.3 SIP to QSIG, during establishment of a call from SIP to QSIG.47 Annex C (informative): Bibliography.49 History 50 ETSI ETSI TS 102 166 V1.2.1 (2007-01) 6 Intellectual Property Rights IPRs essential or potentially essen
30、tial to the present document 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 found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notifi
31、ed to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can
32、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, essential to the present document. Foreword This Technical Specification (TS) has been produced by ECMA on behalf of its members and those of the
33、European Telecommunications Standards Institute (ETSI). Introduction The present document is one of a series of Ecma Standards defining the interworking of services and signalling protocols deployed in corporate telecommunication networks (CNs) (also known as enterprise networks). The series uses te
34、lecommunication concepts as developed by ITU-T and conforms to the framework of International Standards on Open Systems Interconnection as defined by ISO/IEC. The present document defines the signalling protocol interworking for basic services between a Private Integrated Services Network (PISN) and
35、 a packet-based private telecommunications network based on the Internet Protocol (IP). It is further assumed that the protocol for the PISN part is QSIG and that the protocol for the IP-based network is SIP. Compared with the 1st edition, this 2nd edition of this Ecma Standard includes numerous sma
36、ll changes arising during derived work in the IETF on RFC 4497. This 2nd edition is in full technical alignment with RFC 4497. The present document is based upon the practical experience of Ecma member companies and the results of their active and continuous participation in the work of ISO/IEC JTC1
37、, ITU-T, ETSI and other international and national standardization bodies. It represents a pragmatic and widely based consensus. ETSI ETSI TS 102 166 V1.2.1 (2007-01) 7 1 Scope The present document specifies signalling interworking between QSIG and the Session Initiation Protocol (SIP) in support of
38、 basic services within a corporate telecommunication network (CN) (also known as enterprise network). QSIG is a signalling protocol that operates between Private Integrated Services eXchanges (PINX) within a Private Integrated Services Network (PISN). A PISN provides circuit-switched basic services
39、and supplementary services to its users. QSIG is specified in Ecma Standards; in particular, 2 (call control in support of basic services), 3 (generic functional protocol for the support of supplementary services), and a number of standards specifying individual supplementary services. NOTE: The nam
40、e QSIG was derived from the fact that it is used for signalling at the Q reference point. The Q reference point is a point of demarcation between two PINXs. SIP is an application-layer protocol for establishing, terminating, and modifying multimedia sessions. It is typically carried over IP 15 and 1
41、6. Telephone calls are considered a type of multimedia session where just audio is exchanged. SIP is defined in 10. As the support of telephony within corporate networks evolves from circuit-switched technology to Internet technology, the two technologies will coexist in many networks for a period,
42、perhaps several years. Therefore, there is a need to be able to establish, modify, and terminate sessions involving a participant in the SIP network and a participant in the QSIG network. Such calls are supported by gateways that perform interworking between SIP and QSIG. The present document specif
43、ies SIP-QSIG signalling interworking for basic services that provide a bi-directional transfer capability for speech, DTMF, facsimile, and modem media between a PISN employing QSIG and a corporate IP network employing SIP. Other aspects of interworking, e.g. the use of RTP and SDP, will differ accor
44、ding to the type of media concerned and are outside the scope of the present document. Call-related and call-independent signalling in support of supplementary services is outside the scope of the present document, but support for certain supplementary services (e.g. call transfer, call diversion) c
45、ould be the subject of future work. Interworking between QSIG and SIP permits a call originating at a user of a PISN to terminate at a user of a corporate IP network, or a call originating at a user of a corporate IP network to terminate at a user of a PISN. Interworking between a PISN employing QSI
46、G and a public IP network employing SIP is outside the scope of the present document. However, the functionality specified in the present document is in principle applicable to such a scenario when deployed in conjunction with other relevant functionality (e.g. number translation, security functions
47、, etc.). The present document is applicable to any interworking unit that can act as a gateway between a PISN employing QSIG and a corporate IP network employing SIP. 2 Conformance In order to conform to the present document, a gateway shall satisfy the requirements identified in the Implementation
48、Conformance Statement (ICS) proforma in annex A. ETSI ETSI TS 102 166 V1.2.1 (2007-01) 8 3 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. References are either specific (identified by date of publication and
49、/or edition number or version number) or non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version 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. 1 ISO/IEC 11571: “Private Integrated Services Networks (PISN) - Addressing“ (also published by Ecma as Standard E
