标准摘要
[中文适用范围]： 本国际标准规定了附加网络功能（ANF）专用用户移动呼入呼叫（PUMI）和专用用户移动呼出呼叫（PUMO），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。 ANF-PUMI 是一项附加网络功能，只要已知 PUM 用户的位置，无论 PUM 用户在 PISN 内的地理位置如何，它都会将传入呼叫定向到 PISN 内的 PUM 用户。 ANF-PUMO 是一项附加网络功能，允许 PISN 处理来自本地 PUM 用户的呼叫请求（如果需要）。 根据 ETS 300 387 中描述的方法，附加网络功能规范分三个阶段生成。 该国际标准包含 ANF-PUMI 和 ANF-PUMO 的第一阶段和第二阶段规范。 第一阶段规范（第 6 条和第 7 条）指定了一般特征原则和功能。 第 2 阶段规范（第 8 条和第 9 条）标识了附加网络功能中涉及的功能实体以及它们之间的信息流。 [外文原描述]： This International Standard specifies the Additional Network Features (ANF) Private User Mobility Incoming Call (PUMI) and Private User Mobility Outgoing Call (PUMO), which are applicable to various basic services supported by Private Integrated Services Networks (PISN). Basic services are specified in ISO/IEC 11574. ANF-PUMI is an additional network feature that directs incoming calls to a PUM user within a PISN regardless of the PUM user's geographical location within the PISN, provided the PUM user's location is known. ANF-PUMO is an additional network feature that permits the PISN to process call requests from a PUM user at the home location, if required. Additional network feature 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 ANF-PUMI and ANF-PUMO. The stage 1 specification (clauses 6 and 7) specifies the general feature principles and capabilities. The stage 2 specification (clauses 8 and 9) identifies the Functional Entities involved in the additional network features and the information flows between them.
英文名称Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Private User Mobility (PUM) - Call handling additional network features