ISO IEC 21408 pdf download – Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Inter-exchange signalling protocol — Simple dialog supplementary service
1Scope
This International Standard specifies the signalling protocol for the support of the Simple Dialog supplementary service(SS-SD) at the Q reference point between Private lntegrated services Network eXchanges (PINXs) connected together within aPrivate Integrated Services Network (PISN).
Supplementary service SD enables a user to communicate with another user or application by the exchange of keypad anddisplay information transparently over a PISN.
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 IntermnationalStandard contains the stage 3 specification for the Q reference point and satisfies the requirements identified by the stage 1 andstage 2 specifications in ISOIEC 21407.
The signalling protocol for SS-SD operates on top of the signalling protocol for basic circuit switched call control, as specifiedin ISOIEC 11572, 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-SD 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 between SS-SD and other supplementary services and ANFs for which signalling protocols at the Q reference point are supported inaccordance with the stage 3 standards concerned.
3Normative 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.
ISO/IEC 10646-1:2000, Information technology -Universal Muliple-Octet Coded Character Set (UCS) – Part l: Archiectureand Basic Mulrilingual Plane
ISOIEC 11572:2000,Information technology – Telecommunications and information exchange between systems – Privatelntegrated Services Network – Circuit mode bearer services – Inter-exchange signalling procedures and protocol
ISOIEC 11579-1:1994, lnformation technology – Telecommunications and information exchange between systems – Privateintegrated services network – Part I: 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 suppor of supplementary services – lnter-exchangesignalling procedures and protocol
ISO(IEC 21407:2001，Information technology – Telecommunications and information exchange between systems – PrivateIntegrated Services Network – Specification, fiunctional model and information flows – Simple dialog supplementary service
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)
− BMP String
(ISO/IEC 10646-1)
− Call-Independent (ISO/IEC 11582)
− Client User
(ISO/IEC 21407)
− Display Information
(ISO/IEC 21407)
− Gateway PINX
(ISO/IEC 11582)
− Keypad Information (ISO/IEC 21407)
− Originating PINX
(ISO/IEC 11582)
− Private Integrated Services Network (PISN)
(ISO/IEC 11579-1)
− Private Integrated services Network eXchange (PINX)
(ISO/IEC 11579-1)
− Server User (ISO/IEC 21407)
− Signalling
(ITU-T Rec. I.112)
− Supplementary Service
(ITU-T Rec. I.210)
− Supplementary Service Control Entity
(ISO/IEC 11582)
− Terminating PINX (ISO/IEC 11582)
− Transit PINX
(ISO/IEC 11582)
4.2 Other definitions
4.2.1 Client User PINX
The PINX at which the Client User is located.
4.2.2 Server User PINX
The PINX at which the Server User is located.
5 List of acronyms
ANF Additional Network Feature
APDU Application Protocol Data Unit
ASN.1 Abstract Syntax Notation no. 1
BMP Basic Multilingual Plane
ISO IEC 21408 pdf download – Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Inter-exchange signalling protocol — Simple dialog supplementary service
