ISO IEC 15052 pdf download – Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Inter-exchange signalling protocol — Recall supplementary service

ISO IEC 15052 pdf download – Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Inter-exchange signalling protocol — Recall supplementary service
1Scope
This International Standard specifies the signalling protocol for the support of Recall supplementary service (SS-RE) at the Qreference point between Private Integrated services Network eXchanges (PINXs) connected together within Private IntegratedServices 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 isunanswered.SS-RE is only applicable after transfer by join, not after transfer by rerouteing.
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 InternationalStandard contains the stage 3 specification for the Q reference point and satisfies the requirements identified by the stage 1 andstage 2 specifications in ISO/IEC 15051.
The signalling protocol for SS-RE operates on top of the signalling protocol for basic circuit switched call control, as specifiedin ISoIEc i1572, and uses certain aspects of the generic procedures for the control of supplementary services specified inISO/IEC 11582.
This International Standard also specifies additional signalling protocol requirements for the support of interactions at the Qreference point between SS-RE and other supplementary services and ANFs. However, the interaction with the Call Transfersupplementary service is specified as part of Ss-RE signalling procedures as it is the essential aspect of the Recallsupplementary service.
NOTE -Additional interactions that have no impact on the signalling protocol at the Q reference point can be found in the relevant stage 1specifications.
This International Standard is applicable to PINXs which can be interconnected to form a PISN.
2Conformance
In order to conform to this International Standard，a PINX shall satisfy the requirements identified in the ProtocolImplementation Conformance Statement (PICS) proforma in annex A.
Conformance to this International Standard includes conforming to those clauses that specify protocol interactions betweenSS-RE and other supplementary services and ANFs for which signalling protocols at the Q reference point are supported inaccordance with the stage 3 standards concerned.
Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only theedition cited applies.For undated references， the latest edition of the referenced document (including any amendments)applies.
ISOIEC 11572:2000,Information technology – Telecommunications and information exchange between systems – PrivateIntegrated Services Network – Circuit mode bearer services – Inter-exchange signalling procedures and protocol
ISOIEC11574.2000,Information technology – Telecommunications and information exchange between systems – Privatelntegrated Services Network – Circuit-mode 64 kbiuds bearer services – Service description, functional capabilities andinformation flows
ISOIEC 11579-1:1994, lnformation technology – Telecommunications and information exchange between systems – Privateintegrated services network – Part 1: Reference configuration for PISN Exchanges (PINX)
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. 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 Standard 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
(ISO/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)
− Supplementary Service
(ITU-T Rec. I.210)
− Supplementary Service Control Entity (ISO/IEC 11582)