Reference number
ISO/IEC 13865:2003
© ISO 2024
International Standard
ISO/IEC 13865:2003
Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Specification, functional model and information flows — Call Transfer supplementary service
Edition 2
2003-04
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Published (Edition 2, 2003)
This publication was last reviewed and confirmed in 2015. Therefore this version remains current.

ISO/IEC 13865:2003

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The electronic version of this International Standard can be downloaded from the ISO/IEC Information Technology Task Force (ITTF) web site

Abstract

ISO/IEC 13865:2003 specifies Supplementary Service Call Transfer (SS-CT), which is applicable to various basic services supported by Private Integrated Services Networks (PISNs). Basic services are specified in ISO/IEC 11574.

SS-CT is a supplementary service which enables a user to transform two of that user's calls (of which one must be answered) into a new call between the other two users of the two calls.

Supplementary service specifications are produced in three stages, according to the method described in ETS 300 387. ISO/IEC 13865:2003 contains the stage 1 and stage 2 specifications of SS-CT. The stage 1 specification (clause 6) specifies the supplementary service as seen by users of PISNs. The stage 2 specification (clauses 7 and 8) identifies the functional entities involved in the supplementary service and the information flows between them.

ISO/IEC 13865:2003 contains two stage 2 specifications reflecting different ways of operating the service within the network: transfer by join and transfer by rerouteing.

General information

  • Status
     : Published
    Publication date
     : 2003-04
    Stage
    : Close of review [90.60]
  • Edition
     : 2
    Number of pages
     : 34
  • Technical Committee :
    ISO/IEC JTC 1/SC 6
    ICS :
    33.040.35 
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Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goal

9
Industry, Innovation and Infrastructure

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