本标准为接入提供商的网络接口与最终用户之间的双向传输路径和交换运营商的终端之间的双向传输路径提供了性能目标。这组目标将使语音带数据语音级特殊服务能够提供高质量的端到端性能。本标准根据最终用户需求和应用，为模拟性能相关的传输参数设定目标。

This standard provides performance objectives for the two-way transmission path between the access provider¿s network interface to an end-user and an interexchange carrier¿s point of termination. This set of objectives will enable the provision of quality end-to-end performance for voiceband data voice-grade special services. This standard sets objectives for analog performance-related transmission parameters based on end-user needs and applications.