ISO 19459:2001
ISO 19459:2001 Information technology – Telecommunications and information exchange between systems – Private Integrated Services Network – Specification, functional model and information flows – Single Step Call Transfer Supplementary Service
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Description
This International Standard specifies the Supplementary Service (SS) Single Step Call Transfer (SSCT), which is applicable to
various basic services supported by Private Integrated Services Networks (PISN). Basic services are specified in ISO/IEC
11574.
SS-SSCT is a supplementary service that enables an SSCT user, user A, to transform an existing call between user A and user
B into a new call between user B and a user C whereby user A does not have a call established with user C prior to call
transfer.
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 SS-SSCT. 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.
Edition
1
Published Date
2001-05-10
Status
PUBLISHED
Pages
29
Language
English
Format
Secure PDF
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Abstract
This International Standard specifies the Supplementary Service (SS) Single Step Call Transfer (SSCT), which is applicable to
various basic services supported by Private Integrated Services Networks (PISN). Basic services are specified in ISO/IEC
11574.
SS-SSCT is a supplementary service that enables an SSCT user, user A, to transform an existing call between user A and user
B into a new call between user B and a user C whereby user A does not have a call established with user C prior to call
transfer.
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 SS-SSCT. 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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