ISO/IEC 19459:2001 PDF

Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Specification, functional model and information flows — Single Step Call Transfer Supplementary Service

Название (английский):

ISO/IEC 19459:2001

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 29
Дата публикации:: 10 мая 2001 г.
Издание:: ISO/IEC IS 19459 edition 1 version 1
ICS:: 33.040.35

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Описание (английский):

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.

Технические детали

Технический комитет: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
SKU: ISO/IEC 19459:2001

Abstract

Overview - ISO/IEC 19459:2001 (Single Step Call Transfer, SS-SSCT)

ISO/IEC 19459:2001 defines the Single Step Call Transfer (SS-SSCT) supplementary service for Private Integrated Services Networks (PISN). The standard specifies the service behaviour, stage 1 (feature principles and capabilities) and stage 2 (functional model and information flows). SS-SSCT enables a user (A) to transform an existing call between A and B into a new call between B and C where A has no prior call with C. The result: B and C communicate directly and A is released from the connection.

Keywords: ISO/IEC 19459:2001, Single Step Call Transfer, SS-SSCT, PISN, Private Integrated Services Network, supplementary service, call transfer, functional model, information flows.

Key topics and technical requirements

Service definition and scope
- Applicability to basic services defined in ISO/IEC 11574 (circuit-mode 64 kbit/s bearer services).
- SS-SSCT may be invoked for incoming or outgoing active calls.
Stage 1 (feature principles)
- General description of invocation, normal and exceptional procedures.
- Behaviour on incomplete transferred-to numbers (option for B to complete C’s number).
- Rules for when the original connection is released (e.g., on ringing or on connect).
Stage 2 (functional model & information flows)
- Identification of Functional Entities (FEs) involved (references to FE1..FE7 and basic call FEs such as Call Control/CCA).
- Definition of information flows (SETUP, RELEASE, REPORT, etc.) and example sequences.
- Allocation of FEs to physical locations and detailed FE actions/behaviour.
Interactions
- Defined interactions with other supplementary services and ANFs (e.g., CLIR restrictions applied to transferred calls; SS-CT and SS-SSCT are mutually exclusive during invocation).
Conformance
- To claim conformance a stage 3 specification (signalling protocols and equipment behaviour) must be provided to implement stage 1/2 requirements.

Applications - who uses ISO/IEC 19459:2001

Telecom equipment manufacturers and PBX/PISN vendors implementing call transfer features.
Systems integrators and network architects designing private telephony networks.
Protocol and signalling engineers writing stage 3 signalling specifications for PISN interchanges.
Test labs and QA teams validating functional behaviour and interoperability of SS-SSCT implementations.

Practical uses: implementing one-step transfer in enterprise private networks, ensuring correct presentation/restriction of calling/connected identifiers during transfers, and guiding functional allocation in multi-node PISN exchanges.

Related standards

ISO/IEC 11574 (basic call services)
ISO/IEC 11571 (addressing)
ISO/IEC 11579-1 (PINX)
ISO/IEC 13865 / 13869 (call transfer specs & signalling)
ETS 300 387 (method for specification of services)
ITU-T I.210, Z.100 (service description, SDL)

This standard is essential for clear, interoperable implementation of Single Step Call Transfer in private integrated service networks.

Overview - ISO/IEC 19459:2001 (Single Step Call Transfer, SS-SSCT)

Keywords: ISO/IEC 19459:2001, Single Step Call Transfer, SS-SSCT, PISN, Private Integrated Services Network, supplementary service, call transfer, functional model, information flows.

Key topics and technical requirements

Service definition and scope
- Applicability to basic services defined in ISO/IEC 11574 (circuit-mode 64 kbit/s bearer services).
- SS-SSCT may be invoked for incoming or outgoing active calls.
Stage 1 (feature principles)
- General description of invocation, normal and exceptional procedures.
- Behaviour on incomplete transferred-to numbers (option for B to complete C’s number).
- Rules for when the original connection is released (e.g., on ringing or on connect).
Stage 2 (functional model & information flows)
- Identification of Functional Entities (FEs) involved (references to FE1..FE7 and basic call FEs such as Call Control/CCA).
- Definition of information flows (SETUP, RELEASE, REPORT, etc.) and example sequences.
- Allocation of FEs to physical locations and detailed FE actions/behaviour.
Interactions
- Defined interactions with other supplementary services and ANFs (e.g., CLIR restrictions applied to transferred calls; SS-CT and SS-SSCT are mutually exclusive during invocation).
Conformance
- To claim conformance a stage 3 specification (signalling protocols and equipment behaviour) must be provided to implement stage 1/2 requirements.

Applications - who uses ISO/IEC 19459:2001

Telecom equipment manufacturers and PBX/PISN vendors implementing call transfer features.
Systems integrators and network architects designing private telephony networks.
Protocol and signalling engineers writing stage 3 signalling specifications for PISN interchanges.
Test labs and QA teams validating functional behaviour and interoperability of SS-SSCT implementations.

Related standards

ISO/IEC 11574 (basic call services)
ISO/IEC 11571 (addressing)
ISO/IEC 11579-1 (PINX)
ISO/IEC 13865 / 13869 (call transfer specs & signalling)
ETS 300 387 (method for specification of services)
ITU-T I.210, Z.100 (service description, SDL)

This standard is essential for clear, interoperable implementation of Single Step Call Transfer in private integrated service networks.

ISO/IEC 19459:2001 PDF

Технические детали

Abstract

Overview - ISO/IEC 19459:2001 (Single Step Call Transfer, SS-SSCT)

Key topics and technical requirements

Applications - who uses ISO/IEC 19459:2001

Related standards

Похожие стандарты

Abstract

Overview - ISO/IEC 19459:2001 (Single Step Call Transfer, SS-SSCT)

Key topics and technical requirements

Applications - who uses ISO/IEC 19459:2001

Related standards

Похожие стандарты

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