ISO/IEC-21888 › Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network Specification, functional model and information flows Call Identification and Call Linkage Additional Network Feature

ISO/IEC-21888 - 1ST EDITION - CURRENT


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This International Standard specifies the Additional Network Feature (ANF) Call Identification and Call Linkage (CIDL), which is applicable to various basic services supported by Private Integrated Services Networks (PISN). Basic services are specified in ISO/IEC 11574.

ANF-CIDL is an additional network feature which allows the identification and correlation of calls throughout a PISN by assigning unambiguous identifiers to each new call and also, as an option, to transformed and logically linked calls.

Supplementary service specifications are produced in three stages, according to the method described in ETS 300 387. This International Standard contains the stage 1 and stage 2 specifications of ANF-CIDL. The stage 1 specification (clause 6) specifies the general feature principles and capabilities. The stage 2 specification (clause 7) identifies the Functional Entities involved in the supplementary service and the information flows between them.

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33.040.35 (Telephone networks Including Public Switched Telephone Networks (PSTN), Private Telecommunication Networks (PTN) and Private Integrated Service Networks (PISN))

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Document Number

ISO/IEC 21888:2001

Revision Level

1ST EDITION

Status

Current

Publication Date

Sept. 1, 2001

Committee Number

ISO/IEC/JTC 1/SC 6