ISO/IEC 14845-1996 信息技术.系统间的远程通信与信息交换.专用综合业务网(PISN).规范、功能模型和信息流.呼叫占用补充业务

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标准号:ISO/IEC 14845-1996
中文标准名称:信息技术.系统间的远程通信与信息交换.专用综合业务网(PISN).规范、功能模型和信息流.呼叫占用补充业务
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 intrusion 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:33.040.40;35.110
适用范围:This International Standard specifies the Call Intrusion supplementary service (SS-CI), which is applicable to various basic services supported by Private Integrated Services Networks (PISN). Basic services are specified in ISO/IEC 11574. Call Intrusion (SS-CI) is a supplementary service which, on request from the served user, enables the served user to establish communication with a busy called user (user B) by breaking into an established call between user B and a third user (user C). Supplementary service specifications are produced in three stages, according to the method described in CCITT Recommendation I.130. This International Standard contains the stage 1 and stage 2 specifications of SS-CI. The stage 1 specification (clause 6) specifies the supplementary service as seen by users of PISNs. The stage 2 specification (clause 7) identifies the functional entities involved in the supplementary service and the information flows between them. Note - For this International Standard, stage 2 does not consider the split of functionality between a functional terminal at user B and the local PINX. Terminal functions and local PINX functions at user B are included in the same Functional Entity.

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