信息技术.系统间远程通信和信息交换.专用综合业务网.交换间信令协议.消息等待指示补充业务

[中文适用范围]： 本国际标准规定了在专用综合业务网络（PISN）内连接在一起的专用综合业务网络交换机（PINX）之间的 Q 参考点处支持消息等待指示补充业务（SS-MWI）的信令协议。 补充服务MWI使得能够向被服务用户发送消息等待指示并且还使得能够取消该消息等待指示。 还可以允许被服务的用户向消息中心询问任何消息等待指示。 Q 参考点在 ISO/IEC 11579-1 中定义。 服务规范按照 ETS 300 387 中指定的方法分三个阶段制定。 本国际标准包含 Q 参考点的第 3 阶段规范，并满足 ISO/IEC 15505 中第 1 阶段和第 2 阶段规范确定的要求。 SS-MWI 的信令协议使用 ISO/IEC 11582 中规定的控制补充服务的通用程序的某些方面。 该国际标准还规定了支持 SS-MWI 之间 Q 参考点交互的附加信令协议要求。 以及其他补充服务和 ANF。 注 1 – 对 Q 参考点的信令协议没有影响的附加交互可以在相关的第 1 阶段规范中找到。 本国际标准适用于可以互连形成 PISN 的 PINX。 [外文原描述]： ISO/IEC 15506:2003 specifies the signalling protocol for the support of the Message Waiting Indication supplementary service (SS-MWI) at the Q reference point between Private Integrated services Network eXchanges (PINXs) connected together within a Private Integrated Services Network (PISN). The supplementary service MWI enables a Served User to be sent a Message Waiting Indication and also enables this Message Waiting Indication to be cancelled. The Served User may also be permitted to interrogate the Message Centre for any Message Waiting Indication. 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 ETS 300 387. 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 15505. The signalling protocol for SS-MWI uses certain aspects of the generic procedures for the control of supplementary services specified in ISO/IEC 11582. ISO/IEC 15506:2003 also specifies additional signalling protocol requirements for the support of interactions at the Q reference point between SS-MWI and other supplementary services and ANFs. NOTE Additional interactions that have no impact on the signalling protocol at the Q reference point can be found in the relevant stage 1 specifications. ISO/IEC 15506:2003 is applicable to PINXs which can interconnect to form a PISN.