1、 Reference number ISO/IEC 13869:2003(E) ISO/IEC 2003INTERNATIONAL STANDARD ISO/IEC 13869 Second edition 2003-04-01Information technology Telecommunications and information exchange between systems Private Integrated Services Network Inter-exchange signalling protocol Call Transfer supplementary serv
2、ice Technologies de linformation Tlcommunications et change dinformation entre systmes Rseau priv intgration de services Protocole de signalisation dinterchange Service supplmentaire de transfert dappel ISO/IEC 13869:2003(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance
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5、very care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO/IEC 2003 All rights reserved. Unless otherwise specified, no part of this pub
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7、eva 20 Tel. + 41 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 13869:2003(E) ISO/IEC 2003 All rights reserved iii Contents Foreword v Introduction vi 1 Scope 1 2 Conformance 1 3 Normative references 1 4
8、Terms and definitions 2 4.1 External definitions 2 4.2 Other definitions 3 4.2.1 End PINX 3 4.2.2 Primary PINX 3 4.2.3 Redirection number 3 4.2.4 Secondary PINX 3 4.2.5 Transferring PINX 3 5 Acronyms 3 6 Signalling protocol for the support of SS-CT 3 6.1 SS-CT description 3 6.2 SS-CT operational req
9、uirements 3 6.2.1 Provision/Withdrawal 3 6.2.2 Requirements on a Transferring PINX 3 6.2.3 Requirements on a Primary PINX 3 6.2.4 Requirements on a Secondary PINX 4 6.2.5 Requirements on a Transit PINX 4 6.3 SS-CT coding requirements 5 6.3.1 Operations 5 6.3.2 Information elements 10 6.3.3 Messages
10、10 6.4 SS-CT state definitions 10 6.4.1 States at a Transferring PINX 10 6.4.2 States at a Primary PINX 11 6.4.3 States at a Secondary PINX 11 6.5 SS-CT signalling procedures 11 6.5.1 Actions at a Transferring PINX 11 6.5.2 Actions at a Primary PINX 13 6.5.3 Actions at a Secondary PINX 14 6.5.4 Acti
11、ons at a Transit PINX 16 6.5.5 Subsequent actions at a Primary and a Secondary PINX 16 6.6 SS-CT impact of interworking with public ISDNs 16 6.6.1 Actions at a Gateway PINX 16 6.6.2 Actions at other types of PINX 17 6.7 SS-CT impact of interworking with non-ISDNs 17 6.7.1 Actions at a Gateway PINX 1
12、7ISO/IEC 13869:2003(E) iv ISO/IEC 2003 All rights reserved 6.7.2 Actions at other types of PINX 17 6.8 Protocol Interactions between SS-CT and other supplementary services and ANFs 18 6.8.1 Calling Name Identification Presentation (SS-CNIP) 18 6.8.2 Connected Name Identification Presentation (SS-CON
13、P) 18 6.8.3 Completion of Calls to Busy Subscribers (SS-CCBS) 18 6.8.4 Completion of Calls on No Reply (SS-CCNR) 18 6.8.5 Call Forwarding Unconditional (SS-CFU) 18 6.8.6 Call Forwarding Busy (SS-CFB) 19 6.8.7 Call Forwarding No Reply (SS-CFNR) 19 6.8.8 Call Deflection (SS-CD) 19 6.8.9 Path Replaceme
14、nt (ANF-PR) 20 6.9 SS-CT Parameter values (Timers) 21 6.9.1 Timer T1 21 6.9.2 Timer T2 21 6.9.3 Timer T3 21 6.9.4 Timer T4 21 Annexes A - Protocol Implementation Conformance Statement (PICS) proforma 22 B - Imported ASN.1 definitions 30 C - Examples of message sequences 31 D - Specification and Desc
15、ription Language (SDL) representation of procedures 38 E - Bibliography 47 F - ASN.1 definitions according to ITU-T Recs. X.208 / X.209 48ISO/IEC 13869:2003(E) ISO/IEC 2003 All rights reserved v Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechn
16、ical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical act
17、ivity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, 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 comm
18、ittee, 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 joint technical committee is to prepare International Standards. Draft International Standards adopted by the joint technical committee are circulated
19、to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote. Attention 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 respon
20、sible for identifying any or all such patent rights. ISO/IEC 13869 was prepared by ECMA (as ECMA-178) and was adopted, under a special “fast-track procedure”, by Joint Technical Committee ISO/IEC JTC 1, Information technology, in parallel with its approval by national bodies of ISO and IEC. This sec
21、ond edition cancels and replaces the first edition (ISO/IEC 13869:1995), which has been technically revised. ISO/IEC 13869:2003(E) vi ISO/IEC 2003 All rights reserved Introduction This International Standard is one of a series of Standards defining services and signalling protocols applicable to Pri
22、vate Integrated Services Networks (PISNs). The series uses ISDN concepts as developed by ITU-T and conforms to the framework of International Standards for Open Systems Interconnection as defined by ISO/IEC. This International Standard specifies the signalling protocol for use at the Q reference poi
23、nt in support of the Call Transfer supplementary service. The protocol defined in this International Standard forms part of the PSS1 protocol (informally known as QSIG). This International Standard is based upon the practical experience of ECMA member companies and the results of their active and co
24、ntinuous participation in the work of ISO/IEC JTC 1, ITU-T, ETSI and other international and national standardization bodies. It represents a pragmatic and widely based consensus. ISO/IEC 2003 All rights reserved 1 1S c o p e This International Standard specifies the signalling protocol for the supp
25、ort of the Call Transfer supplementary service (SS-CT) at the Q reference point between Private Integrated Network services eXchanges (PINXs) connected together within a Private Integrated Services Network (PISN). SS-CT is a supplementary service which enables a User to transform two of that Users c
26、alls (at least one of which must be answered) into a new call between the two other users in the two calls. The Q reference point is defined 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 conta
27、ins the stage 3 specification for the Q reference point and satisfies the requirements identified by the stage 1 and stage 2 specifications in ISO/IEC 13865. The signalling protocol for SS-CT operates on top of the signalling protocol for basic circuit switched call control, as specified in ISO/IEC
28、11572, and uses certain aspects of the generic procedures for the control of supplementary services specified in ISO/IEC 11582. This International Standard also specifies additional signalling protocol requirements for the support of interactions at the Q reference point between Call Transfer and ot
29、her supplementary services and ANFs. This International Standard is applicable to PINXs which can interconnect 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
30、) proforma in annex A. 3 Normative references ISO/IEC 11571:1998, Information technology - Telecommunications and information exchange between systems - Private Integrated Services Networks - Addressing ISO/IEC 11572:2000, Information technology - Telecommunications and information exchange between
31、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 Services Network - Circuit-mode 64 kbit/s bea
32、rer 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 configuration for PISN Exchanges (PINX) ISO/IEC 11582
33、:2002, Information technology - 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 - T
34、elecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Call Transfer supplementary service The following referenced documents are indispensable for the application of this document. For dated referenc
35、es, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. INTERNATIONAL STANDARD ISO/IEC 13869:2003(E)Information technology Telecommunications and information exchange between systems Private Integrated Services Net
36、work Inter-exchange signalling protocol Call Transfer supplementary service ISO/IEC 13869:2003(E) 2 ISO/IEC 2003 All rights reserved ISO/IEC 13868:2003, Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signall
37、ing protocol - Name identification supplementary services 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 13874:2003, In
38、formation technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Path Replacement additional network feature ETS 300 387:1994, Private Telecommunication Network (PTN); Method for the specification of basic
39、 and supplementary services ITU-T Rec. I.112:1993, Vocabulary of terms for ISDNs ITU-T Rec. I.210:1993, Principles of telecommunication services supported by an ISDN and the means to describe them ITU-T Rec. Q.950:2000, Supplementary services protocols, structure and general principles ITU-T Rec. Z.
40、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 Standard uses the following terms defined in other documents: Alerting (ISO/IEC 13865) Answered (IS
41、O/IEC 13865) Application Protocol Data Unit (APDU) (ISO/IEC 11582) Basic Service (ITU-T Rec. I.210) Gateway PINX (ISO/IEC 11572) Complete Number (ISO/IEC 11571) Interpretation APDU (ISO/IEC 11582) Network Facility Extension (NFE) (ISO/IEC 11582) Originating PINX (ISO/IEC 11582) Primary Call (ISO/IEC
42、 13865) Private Integrated Services Network (PISN) (ISO/IEC 11579-1) Private Integrated services Network eXchange (PINX) (ISO/IEC 11579-1) Secondary Call (ISO/IEC 13865) Signalling (ITU-T Rec. I.112) Supplementary Service (ITU-T Rec. I.210) Supplementary Service Control Entity (ISO/IEC 11582) Termin
43、ating PINX (ISO/IEC 11582) Transfer by join (ISO/IEC 13865) Transfer by rerouteing (ISO/IEC 13865) Transit PINX (ISO/IEC 11582) User (ISO/IEC 11574) User A (ISO/IEC 13865) User B (ISO/IEC 13865) User C (ISO/IEC 13865)ISO/IEC 13869:2003(E) ISO/IEC 2003 All rights reserved 3 4.2 Other definitions 4.2.
44、1 End PINX Within the context of a call, a PINX which is not acting as a Transit PINX, i.e. an Originating PINX, a Terminating PINX, or a Gateway PINX. 4.2.2 Primary PINX The End PINX which is on the end of the Primary Call nearest to User B. 4.2.3 Redirection number The number of a transferred User
45、, as provided to the PINX of the other transferred User. 4.2.4 Secondary PINX The End PINX which is on the end of the Secondary Call nearest to User C. 4.2.5 Transferring PINX End PINX which initiates the call transfer procedures on behalf of User A. 5 Acronyms APDU Application Protocol Data Unit AS
46、N.1 Abstract Syntax Notation no. 1 ISDN Integrated Services Digital Network NFE Network Facility Extension PNP Private Numbering Plan PICS Protocol Implementation Conformance Statement PINX Private Integrated services Network eXchange PISN Private Integrated Services Network SDL Specification and De
47、scription Language SS-CT Supplementary Service Call Transfer 6 Signalling protocol for the support of SS-CT 6.1 SS-CT description Call Transfer (CT) is a supplementary service which enables a user to transform two of that users calls (at least one of which must be answered) into a new call between t
48、he two other users in the two calls. This supplementary service is applicable to all basic services defined in ISO/IEC 11574. Call transfer can be achieved by using one of two methods; transfer by join and transfer by rerouteing. Support of transfer by join is mandatory. Support of transfer by rerou
49、teing is an option, which, if not supported by all PINXs involved in the operation of call transfer, allows fall back to using transfer by join. NOTE - When an active call has been transferred to an alerting call, the supervision during the alerting phase and the possible procedures to be followed in case the alerting call remains unanswered are outside the scope of this International Standard. 6.2 SS-CT operational requirements 6.2.1 Provision/Withdrawal Provi
