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０引言 多媒体通信终端是能处理多种媒体信息，并能将它们同步的显现出来，具有交互功能的新型通信终端，是集计算机终端技术、声像技术和通信技术一体化的高技术产物，是整个多媒体通信系统中的一个重要组成部分。终端设备的功能与业务类型有密切的关系，也与通信网的性能直接
0 Introduction Multimedia communication terminal is able to handle a variety of media information, and can be synchronized with their appearance, a new communication terminal with interactive features, is a set of computer terminal technology, audio and video technology and communication technology integration of high-tech products, is An important part of the entire multimedia communication system. The function of the terminal device is closely related to the type of service and also directly to the performance of the communication network