规定了通过客观方法测量的项目、测量方法以及测量条件、测量数据的处理和获取的信息的表示，以便对数字网络上的音频视频通信系统的端到端质量进行客观评估。测量应在双端和完整参考中进行。假设系统在音频-视频信号的输入和输出处具有电气接口通道，以便进行客观评估。

specifies items to be measured by objective methods, methods of measurement together with measuring conditions, processing of the measured data and presentation of acquired information for objective assessment of end-to-end quality of audio-video communication systems over digital networks. The measurements are supposed to be conducted in a double-ended and a full reference. The systems are assumed to have electrical interface channels at the input and at the output of audio-video signals for objective assessment.