标准摘要
[中文适用范围]： 该国际标准定义了用于在专用综合业务网络（PISN）内连接在一起的专用综合网络交换机（PINX）之间的 Q 参考点处的电路交换呼叫控制的信令程序和协议。 Q 参考点在 ISO/IEC 11579-1 中定义。 本国际标准基于 ITU-T 建议 Q.931 中描述的标准，包括该建议附录 D 中描述的对称操作规定。 服务规范按照 ETS 300 387 中指定的方法分三个阶段生成。 本国际标准包含 Q 参考点的第 3 阶段规范，并满足 ECMA-142、ECMA 中第 1 阶段和第 2 阶段规范确定的要求-148 和 ISO/IEC 11584。 该国际标准适用于互连形成 PISN 的 PINX。 附录 ZC 是本国际标准的组成部分。 [外文原描述]： This International Standard defines the signalling procedures and protocol for the purpose of circuit-switched Call Control at the Q-reference point between Private Integrated Network Exchanges (PINXs) connected together within a Private Integrated Services Network (PISN). The Q reference point is defined in ISO/IEC 11579-1. This International Standard is based upon that described in ITU-T Recommendation Q.931, including the provisions for symmetrical operation described in annex D of that recommendation. 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 ECMA-142, ECMA-148 and ISO/IEC 11584. This International Standard is applicable to PINXs which interconnect to form a PISN. Annex ZC is an integral part of this International Standard.
英文名称Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Circuit mode bearer services - Inter-exchange signalling procedures and protocol