1、ETSI TS I O1 907 1.2.1 (2001-08) Technical Specification Corporate Telecommunication Networks (CN); Signalling interworking between QSIG and H.323; Call Transfer supplementary services 2 ETSI TS 101 907V1.2.1 (2001-08) Reference RTS/ECMA-00235 Keywords H.323, network, QSIG, supplementary service ETS
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6、tions Standards Institute 2001. All rights reserved. ETSI 3 ETSI TS 101 907V1.2.1 (2001-08) Table of contents Intellectual Property Rights 6 Foreword 6 Brief history . 6 1 2 3 4 4.1 4.2 4.2.1 4.2.2 4.2.3 4.2.4 4.2.5 4.2.6 4.2.7 4.2.8 4.2.9 4.2.10 4.2.1 1 4.2.12 4.2.13 4.2.14 4.2.15 4.2.16 4.2.17 4.2
7、.18 4.2.19 4.2.20 4.2.21 4.2.22 4.2.23 4.2.24 4.2.25 4.2.26 4.2.27 4.2.28 4.2.29 4.2.30 4.2.3 1 4.2.32 4.2.33 Scope 7 Conformance 8 Normative references 8 De finit ions 9 External definitions . 9 Other definitions 9 Entity A . 9 Entity A* . 9 Entity B . 9 Entity B* . 9 Entity B 9 Entity C . 9 Entity
8、 C* . 10 Entity C 10 Gateway 10 Leg AB 10 Leg AB* 10 Leg AC 10 Leg BC 10 Leg BC* 10 Leg B . 10 Leg B* . 10 Leg C . 10 Scenario AB1 . 10 Scenario AB* 1 . 10 Scenario AB2 . 11 Scenario AB*2 . 11 Scenario AC1 . 11 Scenario AC2 . 11 Scenario BC1 . 11 Scenario BC* 1 . 11 Scenario BC2 . 11 Scenario BC*2 .
9、 11 Scenario B1 . 11 Scenario B* 1 . 11 Scenario B2 . 11 Scenario B*2 . 11 Scenario C1 . 11 Scenario C2 . 12 5 Acronyms . 12 6 Service architecture 12 6.1 Service architecture for invocation and operation . 12 6.1.1 QSIG service architecture . 12 6.1.1.1 ECMA-178 service architecture . transfer by c
10、onsultation . 12 6.1.1.2 ECMA-300 service architecture - single step call transfer . 14 6.1.2 H.450.2 service architecture . 15 6.1.2.1 Transfer by consultation 15 6.1.2.2 Single step call transfer . 17 6.1.3 Scenarios for interworking . 18 ETSI 4 ETSI TS 101 907V1.2.1 (2001-08) 6.1.3.1 6.1.3.2 6.1.
11、4 6.1.4.1 6.1.4.2 6.2 6.2.1 6.2.1.1 6.2.1.2 6.2.2 6.2.3 7 8 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 8.10 8.11 8.12 8.13 8.14 8.15 8.16 Transfer by consultation 18 Single step call transfer . 19 Determination of the location of entities when interworking 19 Transfer by consultation 19 Single step call tr
12、ansfer . 23 Service architecture for activation. deactivation and interrogation . 25 QSIG service architecture . 25 ECMA-178 service architecture 25 ECMA-300 service architecture 25 H.450.2 service architecture . 25 Scenarios for interworking . 25 Protocol interworking - General requirements 25 Prot
13、ocol interworking - Messages and APDUs . 25 Scenario AB1 26 Scenario AB2 26 Scenario AC1 27 Scenario AC2 27 Scenario BC1 28 Scenario BC2 29 Scenario B1 . 30 Scenario B2 . 30 Scenario C1 . 31 Scenario C2 . 31 Scenario AB* 1 32 Scenario AB*2 32 Scenario BC*1 33 Scenario BC*2 34 Scenario B* 1 . 35 Scen
14、ario B*2 . 36 9 Protocol interworking . Content of APDUs 36 9.1 APDU content mapping from QSIG to H.323 36 9.1.1 QSIG ssctInitiate invoke APDU mapping to H.323 CallTransferInitiate invoke APDU 36 9.1.2 QSIG ssctSetup invoke APDU mapping to H.323 CallTransferSetup invoke APDU . 37 9.2 APDU content ma
15、pping from H.323 to QSIG 37 9.2.1 H.323 CallTransferInitiate invoke APDU mapping to QSIG ssctInitiate invoke APDU 37 9.2.2 H.323 CallTransferSetup invoke APDU mapping to QSIG ssctSetup invoke APDU 37 Annex A (normative): Implementation Conformance Statement (ICs) proforma . 38 A . 1 Introduction 38
16、A.2 Instructions for completing the ICs proforma 38 A.2.1 General structure of the ICs proforma 38 A.2.2 Additional information 39 A.2.3 Exception information . 39 A.2.4 Further indications of the ICs proforma tables . 39 A.3 Identification of the implementation 40 A.3.1 Implementation identificatio
17、n 40 A.3.2 Specification for which this ICs applies . 40 A.4 Major capabilities . 40 A.5 General requirements 41 A.6 Message and APDU handling . 42 A.6.1 Message and APDU handling for scenario AB1 . 42 A.6.2 Message and APDU handling for scenario AB2 . 42 A.6.3 Message and APDU handling for scenario
18、 AC 1 . 42 A.6.4 Message and APDU handling for scenario AC2 . 43 A.6.5 Message and APDU handling for scenario BC 1 . 43 A.6.6 Message and APDU handling for scenario BC2 . 43 ETSI 5 ETSI TS 101 907V1.2.1 (2001-08) A.6.7 A.6.8 A.6.9 A.6.10 A.6.11 A.6.12 A.6.13 A.6.14 A.6.15 A.6.16 Message and APDU han
19、dling for scenario B1 44 Message and APDU handling for scenario B2 44 Message and APDU handling for scenario C 1 44 Message and APDU handling for scenario C2 45 Message and APDU handling for scenario AB* 1 . 45 Message and APDU handling for scenario AB*2 . 45 Message and APDU handling for scenario B
20、C* 1 . 46 Message and APDU handling for scenario BC*2 . 46 Message and APDU handling for scenario B* 1 47 Message and APDU handling for scenario B*2 47 A.7 APDU content mapping 48 Annex B (informative): Example message sequence diagrams . 49 B . 1 Scenario AB1 or AB*1 . 49 B.2 Scenario AB2 or AB*2 .
21、 50 B.3 Scenario AC1 . 50 B.4 Scenario AC2 . 51 B.5 Scenario BC1 or BC*1 51 B.6 Scenario BC2 or BC*2 52 B.7 Scenario B1, C1, B*l or C*l 52 B.8 Scenario B2, C2. B*2 or C*2 53 History . 54 ETSI 6 ETSI TS 101 907V1.2.1 (2001-08) Intellectual Property Rights IPRs essential or potentially essential to th
22、e 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 O00 3 14: “Intellectual Property Rights (IPRs); Essential, orpotentially Essential, IPRs notjed to ETSI i
23、n respect OfETSIstandards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (htt:/!wvw.etsi ordj r). 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 existenc
24、e of other IPRs not referenced in ETSI SR O00 3 14 (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 European Telecommunication
25、s Standards Institute (ETSI). Brief history 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). The series uses telecommunication concepts as developed by ITU-T and conforms t
26、o the framework of International Standards on Open Systems Interconnection as defined by ISO/IEC. It has been produced under ETSI work item DTS/ECMA-00195. The present document defines the signalling protocol interworking for call transfer supplementary services between a Private Integrated Services
27、 Network (PISN) and a packet-based private telecommunications network based on the Internet Protocol (IP). It is fkther assumed that the protocol for the PISN part is that defined for the Q reference point (QSIG) and that the protocols for the IP-based network are based on ITU-T Recommendation H.323
28、. 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, ITU-T, ETSI and other international and national standardization bodies. It represents a pragmatic and widely based consens
29、us. The present document is in complete alignment with International Standard ISO/IEC 2 141 O: 200 1 (E) to be published by ISO/IEC in 2001. Adopted as 2nd Edition of Standard ECMA-308 by the General Assembly of June 2001. ETSI 7 ETSI TS 101 907V1.2.1 (2001-08) 1 Scope The present document specifies
30、 signalling interworking between “QSIG“ and “H.323“ in support of the call transfer supplementary services within a Corporate telecommunication Network (CN). “QSIG“ is a signalling protocol that operates at the Q reference point between Private Integrated Services exchanges (PINX) within a Private I
31、ntegrated Services Network (PISN). The Q reference point is defined in ECMA-133. A PISN provides circuit-switched basic services and supplementary services to its users. QSIG is specified in other standards, in particular ECMA-143 (call control in support of basic services), ECMA-165 (generic functi
32、onal protocol for the support of supplementary services) and a number of standards specifiing individual supplementary services. ECMA- 178 specifies the QSIG protocol in support of call transfer by consultation and ECMA-300 specifies the QSIG protocol in support of single step call transfer. “H.323“
33、 is a set of signalling protocols for the support of voice or multimedia communication within a packet network, in particular a packet network that uses the Internet Protocol (IP) as its network layer protocol (IP network). H.323 signalling protocols operate between endpoints in an IP network, eithe
34、r indirectly via one or more gatekeepers, or directly. An endpoint can be a terminal or a gateway to another network. H.323 is an “umbrella“ recommendation referring to various ITU-T Recommendations, in particular Recommendations H.225.0 and H.245 (basic communication capabilities) and ITU-T Recomme
35、ndation H.450.1 (generic functional protocol for the support of supplementary services). ITU-T Recommendation H.450.2 specifies the H.323 protocol in support of call transfer. NOTE: H.450.2 applies only to the 1998 version of H.323 (also known as H.323 version 2) and to later versions. Call transfer
36、 by consultation, as supported by ECMA-178, is a supplementary service that enables a user (user A) to transform two of that users calls (at least one of which must be answered) into a new call between the two other users in the two calls (users B and C). Single step call transfer, as supported by E
37、CMA-300, is a supplementary service that enables a user (user A) to transform an existing call between user A and user B into a new call between user B and user C without user A needing to establish a call with user C prior to transfer. Call transfer, as supported by H.450.2, is a supplementary serv
38、ice that enables the served user (user A) to transform an existing call with a second user (user B) into a new call between user B and a third user (user C) selected by user A. User A may or may not have a call established with user C prior to call transfer. If a call is already established between
39、user A and user C, this is known as transfer by consultation and is equivalent to call transfer as supported by ECMA-178. If a call is not already established between user A and user C, this is known as single step call transfer and is equivalent to call transfer as supported by ECMA-300. Interworki
40、ng between QSIG and H.323 permits a call originating at a user of a PISN to terminate at a user of an IP network, or a call originating at a user of an IP network to terminate at a user of a PISN. The present document provides the following additional capabilities: a PISN user with two calls establi
41、shed, at least one of which being to or from a user in an IP network, to be able to transform those two calls into a new call between the other two users involved; a PISN user with a call established to or from a user in an IP network to be able to transform that call into a new call between the IP
42、network user and a third user selected by the PISN user, that third user being either in the IP network or in the PISN; a PISN user with a call established to a second PISN user to be able to transfer that call into a new call between the second user and a third user selected by the first user, that
43、 third user being in an IP network; an IP network user with two calls established, at least one of which being to or from a user in a PISN, to be able to transform those two calls into a new call between the other two users involved; an IP network user with a call established to or from a user in a
44、PISN to be able to transform that call into a new call between the PISN user and a third user selected by the IP network user, that third user being either in the IP network or in the PISN; and an IP network user with a call established to a second user in the IP network to be able to transfer that
45、call into a new call between the second user and a third user selected by the first user, that third user being in a PISN. ETSI 8 ETSI TS 101 907V1.2.1 (2001-08) The present document is applicable to any interworking unit that can act as a gateway between a PISN employing QSIG and an IP network empl
46、oying H.323. 2 Conformance In order to conform to the present document, a gateway shall satis6 the requirements identified in the Implementation Conformance Statement (ICs) proforma in annex A. 3 Norma tive references The following standards contain provisions which, through reference in this text,
47、constitute provisions of this Standard. All standards are subject to revision, and parties to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. In the case of references to ECMA Standards that are al
48、igned with ISO/IEC International Standards, the number of the appropriate ISO/IEC International Standard is given in brackets after the ECMA reference. ECMA- 133: “Private Integrated Services Network (PISN) - Reference Configurations for PISN Exchanges (PINX), 2nd edition“ (International Standard IS
49、O/IEC 1 1579- 1). ECMA- 143: “Private Integrated Services Network (PISN) - Circuit Mode Bearer Services - Inter-Exchange Signalling Procedures and Protocol (QSIG-BC), 3rd edition“ (International Standard ISO/IEC 1 1572). ECMA- 165: “Private Integrated Services Network (PISN) - Generic Functional Protocol for the Support of Supplementary Services - Inter-Exchange Signalling Procedures and Protocol (QSIG-GF), 4th edition“ (International Standard ISO/IEC 11582). ECMA- 178: “Private Integrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Call Transfer Supplemen
