标准摘要
[中文适用范围]： 本国际标准规定了在专用综合业务网络内连接在一起的专用综合业务网络交换机（PINX）之间的 Q 参考点处支持无线终端呼叫处理附加网络功能（ANF-WTMI 和 ANF-WTMO）的信令协议（PISN）。 ANF-WTMI 是一种将传入呼叫定向到 PISN 内的 WTMI 用户的功能，无论 WTMI 用户在 PISN 内的地理位置如何，前提是 WTMI 用户的位置已知。 PISN 之外的漫游不属于本版国际标准的范围。 如果需要，ANF-WTMO 允许 PISN 处理来自归属位置的 WTMO 用户的呼叫请求。 Q 参考点在 ISO/IEC 11579-1 中定义。 服务规范按照 ITU-T Rec. 中规定的方法分三个阶段制定。 I.130。 该国际标准包含 Q 参考点的第 3 阶段规范，并满足 ISO/IEC 15430 中第 1 阶段和第 2 阶段规范确定的要求。 ANF-WTMI 和 ANF-WTMO 的信令协议在信令协议之上运行用于 ISO/IEC 11572 中规定的基本电路交换呼叫控制，并使用 ISO/IEC 11582 中规定的补充服务控制通用过程的某些方面。 该国际标准还规定了支持交互的附加信令协议要求在 ANF-WTMI / ANF-WTMO 和其他补充服务和 ANF 之间的 Q 参考点。 本国际标准适用于可以互连形成 PISN 的 PINX。 [外文原描述]： ISO/IEC 15431:2003 specifies the signalling protocol for the support of the Wireless terminal call handling additional network features (ANF-WTMI and ANF-WTMO) at the Q reference point between Private Integrated services Network eXchanges (PINX) connected together within a Private Integrated Services Network (PISN). ANF-WTMI is a feature that directs incoming calls to a WTMI user within the PISN regardless of the WTMI user's geographical location within the PISN, provided that the WTMI user's location is known. Roaming outside the PISN is outside the scope of this edition of this International Standard. ANF-WTMO permits the PISN to process call requests from a WTMO user at the home location, if required. The Q reference point is defined in ISO/IEC 11579-1. Service specifications are produced in three stages and according to the method specified in ITU-T Rec. I.130. This International Standard contains the stage 3 specification for the Q reference point and satisfies the requirements identified by the stage 1 and stage 2 specifications in ISO/IEC 15430. The signalling protocol for ANF-WTMI and ANF-WTMO operates on top of the signalling protocol for basic circuit switched call control, as specified in ISO/IEC 11572, and uses certain aspects of the generic procedures for the control of supplementary services specified in ISO/IEC 11582. ISO/IEC 15431:2003 also specifies additional signalling protocol requirements for the support of interactions at the Q reference point between ANF-WTMI / ANF-WTMO and other supplementary services and ANFs. ISO/IEC 15431:2003 is applicable to PINXs which can interconnect to form a PISN.
英文名称Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Wireless terminal call handling additional network features