本推荐做法提供了一种通用的方法来定义 数字有线网络中影响网络性能的测量点和指标 端到端的压缩多媒体（视频/音频/数据）质量。未压缩的内容和 这些与“质量”无关的指标不包括在本推荐规程中，与IP网络相关的问题在SCTE 168-7中解决。

This Recommended Practice provides a common methodology for defining the measurement points and metrics of interest in digital cable networks that impair the compressed multimedia (video/audio/data) quality end to end. Uncompressed content and those metrics not related to "quality" are not included in this Recommended Practice,Issues related to the IP network are addressed in SCTE 168-7.