摘要
在可视电话框架协议标准H．324中，主要包含有多媒体通信控制协议、低比特率多媒体通信复用协议、视频图像编解码协议、音频编解码协议及调制解调协议，其中最关键的是通信控制协议和复用协议。结合实例重点介绍了复用协议中的适配层和复用层，还给出了H．324通信控制协议栈，介绍了消息句法和控制过程。
The visual telephone frame protocols standard H．324 mainly includes multimedia communications control protocol low bit rate multimedia communications multiplex protocol video image coding／decoding protocol audio coding／decoding protocol and modulation／demodulation protocol among which the most important ones are communications control protocol and multiplex protocol． Combined with examples the Adaptive Layer and Multiplexing Layer of multiplex protocol are mainly introduced in this paper． The H．324 communications control protocol stack is also presented and the Message Syntax and Control Process are introduced in detail．
出处
《现代电信科技》
2000年第11期14-17,共4页
Modern Science & Technology of Telecommunications
