ISO/IEC 15055-1997 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、功能模型和信息流 转接计数器附加网络特性

标准号：ISO/IEC 15055-1997
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、功能模型和信息流 转接计数器附加网络特性
英文标准名称：Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Transit counter additional network feature
标准类型：L78
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：L78
国际标准分类号：33.040.40;35.110
适用范围：This International Standard specifies the Transit Counter additional network feature (ANF-TC), which is applicable to various basic services supported by Private Integrated Services Networks (PISN). Basic services are specified in ISO/IEC 11574. ANF-TC is an additional network feature which limits the number of network exchanges that a call request may transit during call establishment, e.g. to protect the network against indefinite looping. There is no user involved in the provision or operation of ANF-TC. Additional network feature specifications are produced in three stages, according to the method described in CCITT Rec. I.130. This International Standard contains the stage 1 and stage 2 specifications of ANF-TC. 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 feature and the information flows between them.