标准摘要
[中文适用范围]： 本国际标准规定了补充业务消息等待指示（SS-MWI），它与专用综合业务网络（PISN）支持的各种基本业务相关但不限于此。 基本服务在 ISO/IEC 11574 中规定。 该补充服务 MWI 使得服务用户能够被发送消息等待指示，并且还使得该消息等待指示能够被取消。 根据 ETS 300 387 中描述的方法，服务规范分三个阶段制定。 该国际标准包含 SS-MWI 的第 1 阶段和第 2 阶段规范。 第一阶段规范（第 6 条）指定了 PISN 用户所看到的补充服务。 第2阶段规范（第7条）规定了补充服务中涉及的功能实体以及它们之间的信息流。 [外文原描述]： ISO/IEC 15505:2003 specifies supplementary service Message Waiting Indication (SS-MWI), which is related, but not limited, to various basic services supported by Private Integrated Services Networks (PISNs). Basic services are specified in ISO/IEC 11574. This supplementary service MWI enables a Served User to be sent a Message Waiting Indication and also enables this Message Waiting Indication to be cancelled. Service specifications are produced in three stages, according to the method described in ETS 300 387. ISO/IEC 15505:2003 contains the stage 1 and stage 2 specifications of SS-MWI. The stage 1 specification (clause 6) specifies the supplementary service as seen by users of PISNs. The stage 2 specification (clause 7) specifies the functional entities involved in the supplementary service 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 - Message Waiting Indication supplementary service