Reference number
ISO/IEC 15051:2003
© ISO 2024
International Standard
ISO/IEC 15051:2003
Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Specification, functional model and information flows — Recall supplementary service
Edition 2
2003-04
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Published (Edition 2, 2003)
This publication was last reviewed and confirmed in 2017. Therefore this version remains current.

ISO/IEC 15051:2003

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Abstract

ISO/IEC 15051:2003 specifies supplementary service Recall (SS-RE), which is applicable to various basic services supported by Private Integrated Services Networks (PISN). Basic services are specified in ISO/IEC 11574.

SS-RE is a supplementary service which provides for the redirection of a call transferred by the served user back to the served user if the call is unanswered. SS-RE is only applicable after transfer by join, not after transfer by rerouteing.

Service specifications are produced in three stages, according to the method described in ETS 300 387. ISO/IEC 15051:2003 contains the stage 1 and stage 2 specifications of SS-RE. The stage 1 specification (clause 6) specifies the supplementary service as seen by users of PISNs. The stage 2 specification (clause 7) identifies the functional entities involved in the supplementary service and the information flows between them.

General information

  • Status
     : Published
    Publication date
     : 2003-04
    Stage
    : Close of review [90.60]
  • Edition
     : 2
    Number of pages
     : 14
  • 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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