ISO IEC 19460 pdf download – Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Inter-exchange signalling protocol — Single Step Call Transfer supplementary service

ISO IEC 19460 pdf download – Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Inter-exchange signalling protocol — Single Step Call Transfer supplementary service
1Scope
This International Standard specifies the signalling protocol for the support of the Single Step Call Transfer supplementaryservice (Ss-SSCT) at the Q reference point between Private Integrated Network services eXchanges(PINXs) connectedtogether within a Private Integrated Services Network (PISN).
Ss-SSCT is a supplementary service which enables a user, user A, to transform an existing call between user A and user B intoa new call between user B and a user C whereby user A does not have a call established with user C prior to call transfer.
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 l andstage 2 specifications in ISO/IEC 19459.
The signalling protocol for Ss-SSCT operates on top of the signalling protocol for basic circuit switched call control, asspecified in ISOEC 11572, and uses certain aspects of the generic procedures for the control of supplementary servicesspecified in ISO/IEC 11582.
This International Standard also specifies additional signalling protocol requirements for the support of interactions at the Qreference point between Single Step Call Transfer and other supplementary services and ANFs.
This International Standard is applicable to PINXs which can interconnect to form a PISN.2Conformance
ln 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-sSCT and other supplementary services and ANFs for which signalling protocols at the Q reference point are supported inaccordance with the stage 3 standards concerned.
3
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 11571:1998,Information technology – Telecommunications and information exchange between systems – PrivateIntegrated Services Networks – Addressing
ISOIEC 11572:2000, Information technology – Telecommunications and information exchange between systems – PrivateIntegrated Services Network – Circuit mode bearer services – Inter-exchange signalling procedures and protocol
ISOIEC 11574:2000, lnformation technology – Telecommunications and information exchange between systems – PrivateIntegrated Services Network – Circuit-mode 64 kbit/s bearer services – Service description, functional capabilities andinformation flows
ISOIEC 11579-1:1994,Information technology – Telecommunications and information exchange between systems – Privateintegrated services network – Part l : Reference configuration for PISN Exchanges (PINX)
ISO/IEC 11582:2002,Information technology – Telecommunications and information exchange between systems – PrivateIntegrated Services Network – Generic functional protocol for the support of supplementary services – Inter-exchangesignalling procedures and protocol
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.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 (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)
− New Call, New Connection
(ISO/IEC 19459)
− Original Call, Original Connection
(ISO/IEC 19459)
− Originating PINX
(ISO/IEC 11582)
− Private Integrated Services Network (PISN)
(ISO/IEC 11579-1)
− Private Integrated services Network eXchange (PINX) (ISO/IEC 11579-1)
4.2 Other definitions
4.2.1 Rerouting number
The number of the Transferred-to user.
4.2.2 Rerouting PINX
A PINX on the call path of the original call, that reroutes that call to user C. This can either be the Transferring, the Transferred
or a Transit PINX being capable of performing the rerouting function.
4.2.3 Transferred PINX
The End PINX which is on the end of the original call nearest to user B.
4.2.4 Transferred-To PINX
The End PINX which is on the end of the new call nearest to user C.
4.2.5 Transferring PINX
The End PINX which initiates single step call transfer procedures on behalf of user A.
5 Acronyms
APDU Application Protocol Data Unit
ASN.1 Abstract Syntax Notation no. 1
ISDN Integrated Services 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-SSCT Supplementary Service Single Step Call Transfer