To provide multicast for multimedia real time services, such as digital audio and video in networks, is one of the important issues in current research field.
在网络中提供数字化音、视频等实时业务的多媒体多播通信是当前的研究热点。
This paper describes some technical foundations of the new real-time multimedia services, where a realtime transport protocol (RTP) and its prototype implementation are focused on.
本文主要论述了在网络之间传输多媒体信息的一些基本概念和技术，着重讨论了实时运输协议RTP的主要技术内容及原型实现。
Therefore, the instant messaging and real-time multimedia communication is one of the most important services supplied by NGN (Next Generation Network).
因此，即时通信和实时多媒体通信是下一代网络(NGN)业务提供的重要方面。
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