本标准适用于电路交换数字服务，并提供和定义了电路交换数字服务的用户、供应商和提供商所需的性能参数和测量，以描述这些服务的用户可观察性能（即，本标准未解决错误原因）。它还包括在确定服务是否处于可用或不可用状态时要考虑的参数。给定的服务将只引用那些适用于该服务的参数或阈值。网络特定参数用于性能分配和网络控制。提供标准性能参数定义和测量，以确保理解: 测量的性能值、网元之间的性能分配，以及网络用户、提供商和设备供应商之间性能测量的兼容性。本文件提供了ATIS-0100517.1995（R2006）《综合业务数字网（ISDN）-性能参数和目标》的框架信息，其中包含本标准中讨论的参数和测量的数字规格和分配。以前称为T1。507-2002（R2006）。

This standard applies to circuit-switched digital services, and provides and defines the performance parameters and measurements needed by users, vendors, and providers of circuit-switched digital services, to characterize the user-observable performance of these services (i.e., it does not address the causes of errors). It also includes parameters to be considered in determining whether or not a service is in the available or unavailable state. A given service will only reference those parameters or thresholds applicable to that service. The network-specific parameters are for performance allocation and network control.Standard performance parameter definitions and measurements are provided to ensure an understanding of: measured performance values, performance allocation among network elements, and compatibility of performance measurements among network users, providers, and equipment vendors. This document provides framework information for ATIS-0100517.1995(R2006), Integrated services digital network (ISDN) - Performance parameters and objectives, which contains numerical specifications and allocations for the parameters and measurements discussed in this standard. Formerly known as T1.507-2002(R2006).