ISO/IEC 19459-2001 信息技术 系统间通信和信息交换 个人综合业务网 规范、功能模型和信息流 单步呼叫传送补充业务

标准号：ISO/IEC 19459-2001
中文标准名称：信息技术 系统间通信和信息交换 个人综合业务网 规范、功能模型和信息流 单步呼叫传送补充业务
英文标准名称：Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network; Specifications, functional model and information flows; Single Step 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 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.