ISO/IEC-14845 › Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Call intrusion supplementary service

ISO/IEC-14845 - 1ST EDITION - CURRENT


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This International Standard specifies the Call Intrusion supplementary service (SS-CI), which is applicable to various basic services supported by Private Integrated Services Networks (PISN). Basic services are specified in ISO/IEC 11574.

Call Intrusion (SS-CI) is a supplementary service which, on request from the served user, enables the served user to establish communication with a busy called user (user B) by breaking into an established call between user B and a third user (user C).

Supplementary service specifications are produced in three stages, according to the method described in CCITI Recommendation I.130. This International Standard contains the stage 1 and stage 2 specifications of SS-CI. 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.

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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 14845:1996

Revision Level

1ST EDITION

Status

Current

Publication Date

Sept. 15, 1996

Committee Number

ISO/IEC JTC 1/SC 6