ISO/IEC 13865-2003 信息技术.系统间远程通信和信息交换.专用综合业务网.规范、功能模式和信息流.呼叫转移补充业务

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标准号:ISO/IEC 13865-2003
中文标准名称:信息技术.系统间远程通信和信息交换.专用综合业务网.规范、功能模式和信息流.呼叫转移补充业务
英文标准名称:Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network; Specification, functional model and information flows; Call transfer supplementary service
标准类型:M11
发布日期:1999/12/31 12:00:00
实施日期:1999/12/31 12:00:00
中国标准分类号:M11
国际标准分类号:33.040.35
适用范围:This International Standard specifies Supplementary Service Call Transfer (SS-CT), which is applicable to various basic services supported by Private Integrated Services Networks (PISNs). Basic services are specified in ISO/IEC 11574. SS-CT is a supplementary service which enables a user to transform two of that user's calls (of which one must be answered) into a new call between the other two users of the two calls. 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-CT. The stage 1 specification (clause 6) specifies the supplementary service as seen by users of PISNs. The stage 2 specification (clauses 7 and 8) identifies the functional entities involved in the supplementary service and the information flows between them. This International Standard contains two stage 2 specifications reflecting different ways of operating the service within the network: transfer by join and transfer by rerouteing.

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