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ISO/IEC 15051:2003

Current Revision

Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network Specification, functional model and information flows Recall supplementary service

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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.


SDO ISO: International Organization for Standardization
Document Number ISO/IEC 15051
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO/IEC/JTC 1/SC 6
Publish Date Document Id Type View
Not Available ISO/IEC 15051:2003 Revision