信息技术.系统间通信和信息交换.个人综合业务网.在PINX和互联网之间C参考点上QSIG的使用

[中文适用范围]： 本国际标准规定了基本标准的组合，以及适当选项和参数值的选择，以规定如何使用 QSIG/PSS1 在专用综合业务网络交换之间的 C 参考点接口上提供数字信令功能。 (PINX) 和互连网络 (ICN)，以允许来自不同供应商和不同公共或私人服务提供商的设备之间的互操作性。 注 1 – 本国际标准意义上的 PINX 是指直接附加到 ICN 的 PINX。 本国际标准适用于附加的 PINX 和互连网络 (ICN)。 本国际标准确定了特定功能、程序和服务的必要或可选使用： ——所使用的传输系统接口的物理和电气特性（物理层）； ——数据链路层程序； ——网络层程序； ——补充服务和附加网络功能，以满足特定的企业网络用户需求。 该国际标准规定了对附加 PINX 和互连网络 (ICN) 实施的要求，以实现充当企业电信网络 (CN) 的 PISN 中的设备之间的互操作性。 注 2 - 本国际标准的实施并不排除制造商提供其他互连方式。 它还不排除 VPN 服务提供商在 PINX 和其他网络（如 PSTN 或 ISDN）之间提供基本呼叫通信。 ISO/IEC TR 14475 规定了 PINX 和公共网络之间的各种接入安排，其中参考点 C 和 T 位于单个接口或单独的接口处。 本国际标准的范围仅限于涵盖单独接口的 C 参考点方面。 本国际标准的当前版本无意为接口的 ICN 侧指定任何网关或终端 PINX 要求。 因此，它通常使用术语“虚拟传输 PINX”而不是互连网络 (ICN)。 [外文原描述]： This International Standard specifies the combination of base standards, together with the selection of appropriate options and parameter values, necessary to specify how QSIG / PSS1 can be used to provide digital signalling capabilities at interfaces at the C reference point between a Private Integrated services Network eXchange (PINX) and an Interconnecting Network (ICN) to permit interoperability between equipment from different vendors and different public or private service providers. NOTE 1 - PINX in the sense of this International Standard is used in the meaning of a PINX directly attached to the ICN. This International Standard is applicable to attached PINXs and Interconnecting Networks (ICN). This International Standard identifies the necessary or optional employment of particular functions, procedures and services when provided: - physical and electrical characteristics (physical layer) of the interfaces to the transmission systems to be employed; - data link layer procedures; - network layer procedures; and - supplementary services and additional network features to meet specific corporate network user requirements. This International Standard states requirements upon attached PINXs and Interconnecting Network (ICN) implementations in order to achieve interoperability between equipment in PISNs serving as Corporate telecommunication Networks (CNs). NOTE 2 - Implementation of this International Standard does not preclude a manufacturer from offering other means of interconnection. It also does not preclude a VPN service provider to offer basic call communications between a PINX and other networks like PSTN or ISDN. ISO/IEC TR 14475 specifies various access arrangements between a PINX and a public network where reference points C and T reside either at a single or at separate interfaces. The scope of this International Standard is limited to cover the C reference point aspects at a separate interface. The current version of this International Standard does not intend to specify any gateway or end PINX requirements for the ICN side of the interface. Therefore it typically uses the term "virtual transit PINX" instead of Interconnecting Network (ICN).