ISO/IEC 13865:2003 信息技术-系统间的通讯和信息交换-专业综合服务网络-信号交换协议-规范、功能模块和信息流-呼叫转移辅助服务

标准编号：ISO/IEC 13865:2003

中文名称：信息技术-系统间的通讯和信息交换-专业综合服务网络-信号交换协议-规范、功能模块和信息流-呼叫转移辅助服务

英文名称：Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Specification, functional model and information flows — Call Transfer suppl

发布日期：2003-04

标准范围

ISO/IEC 13865:2003规定了补充业务呼叫转移（SS-CT），适用于专用综合业务网络（PISN）支持的各种基本业务。ISO/IEC 11574中规定了基本服务。SS-CT是一种补充服务，它使用户能够将该用户的两个呼叫(其中一个必须被应答)转换为这两个呼叫的其他两个用户之间的新呼叫。根据ETS 300 387中描述的方法，分三个阶段产生补充服务规范。ISO/IEC 13865:2003包含SS-CT的阶段1和阶段2规范。第1阶段规范（第6条）规定了PISN用户所看到的补充服务。第2阶段规范（条款7和8）标识了补充服务中涉及的功能实体以及它们之间的信息流。ISO/IEC 13865:2003包含两个阶段2规范，反映了在网络内操作服务的不同方式:通过加入传输和通过重新路由传输。

ISO/IEC 13865:2003 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. ISO/IEC 13865:2003 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.

ISO/IEC 13865:2003 contains two stage 2 specifications reflecting different ways of operating the service within the network: transfer by join and transfer by rerouteing.

标准预览图