【摘要】 简要介绍了会晤创建协议(SIP),提出了基于SIP的应用系统———SRMCS,针对该实时多媒体通信系统,分析了其音频模块的实现和背景噪音的处理、视频模块的实现和视频的流畅播放,并就实时多媒体通信系统的关键问题———视、音频同步给出了可行的解决方案,最后还探讨了本系统中信令流和媒体流的传输方式。更多还原

【Abstract】 This paper introduces session initiation protocol(SIP)curtly, then brings forward the SIP based application system-SRMCS. Based on this realtime multimedia communication system, the implementation of audio module and video module is analyzed, and management of background noises, smoothly playing back of video is also considered. At the same time a feasible solution is also presented as to the key problem of realtime multimedia communication systemsynchronization of audio and video. Finally transmission mode of signal flow and media flow in this system is discussed.更多还原