这一系列工程文档定义了一个基于RTP的可扩展系统，该系统以指定其时序关系的方式引用公共参考时钟。本标准规定了所有基本流的系统定时模型和通用要求。

This family of engineering documents defines an extensible system of RTP-based essence streams referenced to a common reference clock, in a manner which specifies their timing relationships.This standard specifies the system timing model and the requirements common to of all of the essence streams.