标准摘要
[中文适用范围]： 本国际标准规定了补充业务呼叫请求（SS-MCR），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。 ISO/IEC 11574 中规定了基本服务。 补充服务 MCR 使请求用户能够请求协作用户建立到目的地用户的新请求呼叫。 协作用户和目的地用户之间的这个新请求的呼叫可以是基本呼叫或与呼叫无关的信令连接。 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-MCR 的第 1 阶段和第 2 阶段规范。 第一阶段规范（第 6 条）规定了 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 20113:2004 specifies supplementary service Make Call Request (SS-MCR), 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. The supplementary service MCR enables a Requesting User to request a Co-operating User to establish a new Requested Call to a Destination User. This new Requested Call between the Co-operating and Destination User can be either a Basic call or call independent signalling connection. Service specifications are produced in three stages, according to the method described in ETS 300 387. ISO/IEC 20113:2004 contains the stage 1 and stage 2 specifications of SS-MCR. The stage 1 specification specifies the supplementary service as seen by users of PISNs. The stage 2 specification 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 - Make call request supplementary service