H.223和H.245的分析和实现

Analysis and Realization of H.223 and H.245

论述了ＰＳＴＮ网上的多媒体通信协议：数据流复用标准Ｈ．２２３，通信协议标准Ｈ．２４５，分析了其主要功能，并对编程设计的主要问题进行了理论分析，给出了主要功能实现的流程图，以及编程设计主要问题的解决方法．在ＰＣ机上已实现了以上协议，测试表明，编写的Ｈ．２４５和Ｈ．２２３软件基本符合协议规定．

Protocols of H.223 and H.245 for multimedia communications on PSTN are discussed. It analyses the main functions and theoretically the main design problems for the protocols.The main program flow charters are given, and the methods for design problems are also given. According to the above program flow charters and design methods, we realize the protocols, and verify that the protocols are basically in accordance with ITU T specifications.