1、 Reference number ISO/IEC 14843:2003(E) ISO/IEC 2003INTERNATIONAL STANDARD ISO/IEC 14843 Second edition 2003-04-01Information technology Telecommunications and information exchange between systems Private Integrated Services Network Inter-exchange signalling protocol Call Offer supplementary service
2、 Technologies de linformation Tlcommunications et change dinformation entre systmes Rseau priv intgration de services Protocole de signalisation dinterchange Service supplmentaire doffre dappel ISO/IEC 14843:2003(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adob
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7、l. + 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 14843:2003(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
8、 definitions 2 4.1 External definitions 2 4.2 Other definitions 2 4.2.1 Inter-PINX link 2 4.2.2 Path retention 3 4.2.3 Served User PINX 3 5 Acronyms 3 6 Signalling protocol for the support of SS-CO 3 6.1 SS-CO description 3 6.2 SS-CO operational requirements 3 6.2.1 Requirements on an Originating PI
9、NX 3 6.2.2 Requirements on a Terminating PINX 3 6.2.3 Requirements on a Transit PINX 3 6.3 SS-CO coding requirements 4 6.3.1 Operations 4 6.3.2 Notifications 6 6.3.3 Information elements 7 6.3.4 Messages 7 6.4 SS-CO state definitions 7 6.4.1 States at the Originating PINX 7 6.4.2 States at the Termi
10、nating PINX 7 6.5 SS-CO signalling procedures for activation, deactivation and registration 7 6.6 SS-CO signalling procedures for invocation and operation 7 6.6.1 Actions at the Originating PINX 8 6.6.2 Actions at the Terminating PINX 8 6.6.3 Actions at a Transit PINX 9 6.7 SS-CO impact of interwork
11、ing with public ISDNs 9 6.8 SS-CO impact of interworking with non-ISDNs 9 6.9 Protocol interactions between SS-CO and other supplementary services and ANFs 10 6.9.1 Interaction with Calling Name Identification Presentation (SS-CNIP) 10 6.9.2 Interaction with Connected Name Identification Presentatio
12、n (SS-CONP) 10 6.9.3 Interaction with Call Completion to Busy Subscriber (SS-CCBS) 10 6.9.4 Interaction with Call Completion on No Reply (SS-CCNR) 10 6.9.5 Interaction with Call Transfer (SS-CT) 10 6.9.6 Interaction with Call Forwarding Unconditional (SS-CFU) 10 6.9.7 Interaction with Call Forwardin
13、g Busy (SS-CFB) 11 6.9.8 Interaction with Call Forwarding No Reply (SS-CFNR) 11ISO/IEC 14843:2003(E) iv ISO/IEC 2003 All rights reserved 6.9.9 Interaction with Path Replacement (ANF-PR) 12 6.9.10 Interaction with Do Not Disturb (SS-DND) 12 6.9.11 Interaction with Do Not Disturb Override (SS-DNDO) 12
14、 6.9.12 Interaction with Call Intrusion (SS-CI) 12 6.10 SS-CO parameter values (timers) 12 6.10.1 Timer T1 12 Annexes A - Signalling protocol for the support of Path Retention 13 B - Protocol Implementation Conformance Statement (PICS) proforma 22 C - Examples of message sequences 28 D - Specificati
15、on and Description Language (SDL) representation of procedures 32 E - Imported ASN.1 definitions 35 F - ASN.1 definitions according to ITU-T Recs. X.208 / X.209 36ISO/IEC 14843:2003(E) ISO/IEC 2003 All rights reserved v Foreword ISO (the International Organization for Standardization) and IEC (the I
16、nternational Electrotechnical 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 particula
17、r fields of technical activity. 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 establish
18、ed 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 joint technical committee is to prepare International Standards. Draft International Standards adopted by the joint technical
19、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. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO and IEC
20、 shall not be held responsible for identifying any or all such patent rights. ISO/IEC 14843 was prepared by ECMA (as ECMA-192) 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
21、 of ISO and IEC. This second edition cancels and replaces the first edition (ISO/IEC 14843:1996), which has been technically revised. ISO/IEC 14843:2003(E) vi ISO/IEC 2003 All rights reserved Introduction This International Standard is one of a series of Standards defining services and signalling pr
22、otocols applicable to Private 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 u
23、se at the Q reference point in support of the Call Offer 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
24、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 widely based consensus. ISO/IEC 2003 All rights reserved 1 1S c o p e This International Standard specifies the signalling
25、 protocol for the support of the Call Offer supplementary service (SS-CO) at the Q reference point between Private Integrated services Network eXchanges (PINXs) connected together within a Private Integrated Services Network (PISN). SS-CO is a supplementary service which, on request from the calling
26、 user (or on that users behalf), enables a call to be offered to a busy called user and to wait for that called user to accept this call. 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. Thi
27、s International Standard contains 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 14841. The signalling protocol for SS-CO operates on top of the signalling protocol for basic circuit switched call con
28、trol, 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 International Standard also specifies additional signalling protocol requirements for the support of interactions at the Q reference poin
29、t between SS-CO and other supplementary services and ANFs. 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 interconnect to form a P
30、ISN. 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 B. 3 Normative references ISO/IEC 11572:2000, Information technology - Telecommunications and informat
31、ion 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 Services Network - Circu
32、it-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 configuration for PISN Exchanges
33、 (PINX) ISO/IEC 11582:2002, 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, Infor
34、mation technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Call Transfer supplementary service ISO/IEC 13869:2003, Information technology - Telecommunications and information exchange
35、 between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Call Transfer supplementary service The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, t
36、he latest edition of the referenced document (including any amendments) applies. INTERNATIONAL STANDARD ISO/IEC 14843:2003(E)Information technology Telecommunications and information exchange between systems Private Integrated Services Network Inter-exchange signalling protocol Call Offer supplement
37、ary service ISO/IEC 14843:2003(E) 2 ISO/IEC 2003 All rights reserved 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 148
38、41:1996, Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Call offer supplementary service ISO/IEC 14844:2003, Information technology - Telecommunications and informati
39、on exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Do Not Disturb and Do Not Disturb Override supplementary services ISO/IEC 14846:2003, Information technology - Telecommunications and information exchange between systems - Private Integrated Ser
40、vices Network - Inter-exchange signalling protocol - Call Intrusion supplementary service 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
41、 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.100:1999, Specification and description language (SDL) 4 Terms and definitions For the purposes of this document,
42、the following terms and definitions apply. 4.1 External definitions This International Standard uses the following terms defined in other documents: - Application Protocol Data Unit (APDU) (ISO/IEC 11582) - Basic Service (ITU-T Rec. I.210) - Call, Basic Call (ISO/IEC 11582) - Coordination Function (
43、ISO/IEC 11582) - Diverted-to PINX (ISO/IEC 13873) - Notification (ISO/IEC 11582) - Originating PINX (ISO/IEC 11572) - Private Integrated Services Network (PISN) (ISO/IEC 11579-1) - Private Integrated services Network eXchange (PINX) (ISO/IEC 11579-1) - Rerouteing PINX (ISO/IEC 13873) - Served User (
44、ISO/IEC 13873) - Signalling (ITU-T Rec. I.112) - Supplementary Service (ITU-T Rec. I.210) - Supplementary Services Control Entity (ISO/IEC 11582) - Terminating PINX (ISO/IEC 11572) - Transit PINX (ISO/IEC 11572) - User (ISO/IEC 11574) 4.2 Other definitions 4.2.1 Inter-PINX link The totality of a sig
45、nalling channel and a number of user information channels at the Q reference point.ISO/IEC 14843:2003(E) ISO/IEC 2003 All rights reserved 3 4.2.2 Path retention The retaining of the network connection between the Originating PINX and the Terminating PINX so that a supplementary service (such as SS-C
46、O) can be invoked without establishing a new connection. 4.2.3 Served User PINX The PINX serving the served user. 5 Acronyms ANF Additional Network Feature APDU Application Protocol Data Unit ASN.1 Abstract Syntax Notation no. 1 ISDN Integrated Services Digital Network NFE Network Facility Extension
47、 PICS Protocol Implementation Conformance Statement PINX Private Integrated services Network eXchange PISN Private Integrated Services Network SDL Specification and Description Language SS-CO Call Offer supplementary service 6 Signalling protocol for the support of SS-CO 6.1 SS-CO description Call O
48、ffer (SS-CO) is a supplementary service which, on request from the calling user (or on that users behalf), enables a call to be offered to a busy called user and to wait for that called user to accept this call. SS-CO is applicable to all circuit mode basic services defined in ISO/IEC 11574. 6.2 SS-
49、CO operational requirements 6.2.1 Requirements on an Originating PINX Call establishment procedures for the outgoing side of an inter-PINX link and call release procedures, as specified in ISO/IEC 11572, shall apply. Generic procedures for the call-related control of supplementary services, as specified in ISO/IEC 11582 for an End PINX, shall apply. 6.2.2 Requirements on a Terminating PINX Call establishment procedures for the incoming side of an inter-PINX link and call release procedures, as specified in
