1、 Reference number ISO/IEC 15052:2003(E) ISO/IEC 2003INTERNATIONAL STANDARD ISO/IEC 15052 Second edition 2003-04-01Information technology Telecommunications and information exchange between systems Private Integrated Services Network Inter-exchange signalling protocol Recall supplementary service Tec
2、hnologies de linformation Tlcommunications et change dinformation entre systmes Rseau priv intgration de services Protocole de signalisation dinterchange Service supplmentaire de rappel ISO/IEC 15052:2003(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licen
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7、22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO/IEC 2003 All rights reservedISO/IEC 15052:2003(E) ISO/IEC 2003 All rights reserved iii Contents Foreword v Introduction vi 1 Scope 1 2 Conformance 1 3 Normative references 1 4 Terms and definit
8、ions 2 4.1 External definitions 2 4.2 Other definitions 3 4.2.1 Served user, User A 3 4.2.2 Served User PINX 3 5 List of acronyms 3 6 Signalling protocol for the support of SS-RE 3 6.1 SS-RE description 3 6.2 SS-RE operational requirements 3 6.2.1 Provision/withdrawal 3 6.2.2 Requirements on the Pri
9、mary PINX 3 6.2.3 Requirements on the Served User PINX 3 6.3 SS-RE coding requirements 4 6.3.1 Operations 4 6.3.2 Information elements 5 6.3.3 Messages 5 6.4 SS-RE State definitions 5 6.4.1 States at the Served User PINX 5 6.4.2 States at the Primary PINX 5 6.5 SS-RE signalling procedures 5 6.5.1 Ac
10、tions at the Served User PINX 5 6.5.2 Actions at the Primary PINX 6 6.6 SS-RE Impact of interworking with public ISDNs 6 6.7 SS-RE Impact of interworking with non-ISDNs 6 6.8 SS-RE Parameter values (Timers) 6 6.9 Protocol interactions between SS-RE and other supplementary services and ANFs 6 6.9.1 I
11、nteraction with Calling Name Identification Presentation (SS-CNIP) 6 6.9.2 Interaction with Connected Name Identification Presentation (SS-CONP) 6 6.9.3 Interaction with Call Forwarding Unconditional (SS-CFU) 7 6.9.4 Interaction with Call Forwarding Busy (SS-CFB) 7 6.9.5 Interaction with Call Forwar
12、ding No Reply (SS-CFNR) 7 6.9.6 Interaction with Call Transfer (SS-CT) 7 6.9.7 Interaction with Path Replacement (ANF-PR) 7 6.9.8 Interaction with Call Completion to Busy Subscriber (SS-CCBS) 7 6.9.9 Interaction with Call Completion on No Reply (SS-CCNR) 7 6.9.10 Interaction with Call Offer (SS-CO)
13、7 6.9.11 Interaction with Do Not Disturb (SS-DND) 7ISO/IEC 15052:2003(E) iv ISO/IEC 2003 All rights reserved 6.9.12 Interaction with Do Not Disturb Override (SS-DNDO) 7 6.9.13 Interaction with Call Intrusion (SS-CI) 7 6.9.14 Interaction with Advice of Charge (SS-AOC) 8 6.9.15 Interactions with Call
14、Interception delayed (ANF-CINT) 8 Annexes A - Protocol Implementation Conformance Statement (PICS) proforma 9 B - Example of message sequences 14 C - Specification and Description Language (SDL) Representation of procedures 16 D - ASN.1 definitions according to ITU-T Recs. X.208 / X.209 19ISO/IEC 15
15、052:2003(E) ISO/IEC 2003 All rights reserved v Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the develo
16、pment of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-government
17、al, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of the
18、 joint technical committee is to prepare International Standards. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote. At
19、tention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. ISO/IEC 15052 was prepared by ECMA (as ECMA-214) and was adopted, under a special “fast-track p
20、rocedure”, by Joint Technical Committee ISO/IEC JTC 1, Information technology, in parallel with its approval by national bodies of ISO and IEC. This second edition cancels and replaces the first edition (ISO/IEC 15052:1997), which has been technically revised. ISO/IEC 15052:2003(E) vi ISO/IEC 2003 A
21、ll rights reserved Introduction This International Standard is one of a series of Standards defining services and signalling protocols applicable to Private Integrated Services Networks (PISNs). The series uses ISDN concepts as developed by ITU-T and conforms to the framework of International Standa
22、rds for Open Systems Interconnection as defined by ISO/IEC. This International Standard specifies the signalling protocol for use at the Q reference point in support of the Recall supplementary service. The protocol defined in this International Standard forms part of the PSS1 protocol (informally k
23、nown as QSIG). This International Standard 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 JTC 1, ITU-T, ETSI and other international and national standardization bodies. It represents a pragmatic and
24、 widely based consensus. ISO/IEC 2003 All rights reserved 1 1S c o p e This International Standard specifies the signalling protocol for the support of Recall supplementary service (SS-RE) at the Q reference point between Private Integrated services Network eXchanges (PINXs) connected together withi
25、n Private Integrated Services Network (PISN). SS-RE is a supplementary service which provides for the re-direction of a transferred call back to the served user if the call is unanswered. SS-RE is only applicable after transfer by join, not after transfer by rerouteing. The Q reference point is defi
26、ned in ISO/IEC 11579-1. Service specifications are produced in three stages and according to the method specified in ETS 300 387. This International Standard contains the stage 3 specification for the Q reference point and satisfies the requirements identified by the stage 1 and stage 2 specificatio
27、ns in ISO/IEC 15051. The signalling protocol for SS-RE operates on top of the signalling protocol for basic circuit switched call control, as specified in ISO/IEC 11572, and uses certain aspects of the generic procedures for the control of supplementary services specified in ISO/IEC 11582. This Inte
28、rnational Standard also specifies additional signalling protocol requirements for the support of interactions at the Q reference point between SS-RE and other supplementary services and ANFs. However, the interaction with the Call Transfer supplementary service is specified as part of SS-RE signalli
29、ng procedures as it is the essential aspect of the Recall supplementary service. NOTE - Additional interactions that have no impact on the signalling protocol at the Q reference point can be found in the relevant stage 1 specifications. This International Standard is applicable to PINXs which can be
30、 interconnected to form a PISN. 2 Conformance In order to conform to this International Standard, a PINX shall satisfy the requirements identified in the Protocol Implementation Conformance Statement (PICS) proforma in annex A. Conformance to this International Standard includes conforming to those
31、clauses that specify protocol interactions between SS-RE and other supplementary services and ANFs for which signalling protocols at the Q reference point are supported in accordance with the stage 3 standards concerned. 3 Normative references ISO/IEC 11572:2000, Information technology - Telecommuni
32、cations and information exchange between systems - Private Integrated Services Network - Circuit mode bearer services - Inter-exchange signalling procedures and protocol ISO/IEC 11574:2000, Information technology - Telecommunications and information exchange between systems - Private Integrated Serv
33、ices Network - Circuit-mode 64 kbit/s bearer services - Service description, functional capabilities and information flows ISO/IEC 11579-1:1994, Information technology - Telecommunications and information exchange between systems - Private integrated services network - Part 1: Reference configuratio
34、n for PISN Exchanges (PINX) INTERNATIONAL STANDARD ISO/IEC 15052:2003(E)Information technology Telecommunications and information exchange between systems Private Integrated Services Network Inter-exchange signalling protocol Recall supplementary service The following referenced documents are indisp
35、ensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO/IEC 15052:2003(E) 2 ISO/IEC 2003 All rights reserved ISO/IEC 11582:2002, Information techn
36、ology - Telecommunications and information exchange between systems - Private Integrated Services Network - Generic functional protocol for the support of supplementary services - Inter-exchange signalling procedures and protocol ISO/IEC 13865:2003, Information technology - Telecommunications and in
37、formation exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Call Transfer supplementary service ISO/IEC 13868:2003, Information technology - Telecommunications and information exchange between systems - Private Integrated Service
38、s Network - Inter-exchange signalling protocol - Name identification supplementary services ISO/IEC 13869:2003, Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Call Transfer supplementar
39、y service ISO/IEC 13873:2003, Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Call Diversion supplementary services ISO/IEC 15051:2003, Information technology - Telecommunications and in
40、formation exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Recall supplementary service ISO/IEC 15054:2003, Information technology - Telecommunications and information exchange between systems - Private Integrated Services Netwo
41、rk - Inter-exchange signalling protocol - Call Interception additional network feature ETS 300 387:1994, Private Telecommunication Network (PTN); Method for the specification of basic and supplementary services ITU-T Rec. I.112:1993, Vocabulary of terms for ISDNs ITU-T Rec. I.210:1993, Principles of
42、 telecommunication services supported by an ISDN and the means to describe them ITU-T Rec. Z.100:1999, Specification and description language (SDL) 4 Terms and definitions For the purposes of this document, the following terms and definitions apply. 4.1 External definitions This International Standa
43、rd uses the following terms defined in other documents: Application Protocol Data Unit (ISO/IEC 11582) Basic Service (ITU-T Rec. I.210) Call, Basic Call (ISO/IEC 11582) End PINX (ISO/IEC 11582) Gateway PINX (ISO/IEC 11572) Integrated Services Digital Network (ITU-T Rec. I.112) Interpretation APDU (I
44、SO/IEC 11582) Private Integrated Services Network (PISN) (ISO/IEC 11579-1) Private Integrated services Network eXchange (PINX) (ISO/IEC 11579-1) Primary Call (ISO/IEC 13865) Primary PINX (ISO/IEC 13869) Secondary Call (ISO/IEC 13865) Secondary PINX (ISO/IEC 13869) Signalling (ITU-T Rec. I.112) Suppl
45、ementary Service (ITU-T Rec. I.210) Supplementary Service Control Entity (ISO/IEC 11582)ISO/IEC 15052:2003(E) ISO/IEC 2003 All rights reserved 3 User (ISO/IEC 11574) User B (ISO/IEC 13865) User C (ISO/IEC 13865) 4.2 Other definitions 4.2.1 Served user, User A The user of the Recall service located a
46、t the Served User PINX. 4.2.2 Served User PINX The End PINX which initiates the call transfer procedures on behalf of user A and which recalls user A in case the recall condition applies. 5 List of acronyms APDU Application Protocol Data Unit ASN.1 Abstract Syntax Notation One ISDN Integrated Servic
47、es Digital Network NFE Network Facility Extension PICS Protocol Implementation Conformance Statement PINX Private Integrated services Network eXchange PISN Private Integrated Services Network SDL Specification and Description Language SS-CT Call Transfer supplementary service SS-RE Recall supplement
48、ary service 6 Signalling protocol for the support of SS-RE 6.1 SS-RE description When the served user has a call established with user B and transfers that call to user C SS-RE enables user B to be re- connected to the served user if user C is being alerted and does not reply within a specified time
49、, or if the call is waiting at a busy user C and remains busy for a specified time. 6.2 SS-RE operational requirements 6.2.1 Provision/withdrawal SS-RE is provided or withdrawn after pre-arrangement with the service provider, or may be available generally to all users. SS- RE may be withdrawn on request of the user or for administrative reasons. 6.2.2 Requirements on the Primary PINX The basic call procedures specified in ISO/IEC 11572 shall be supported. Generic procedu
