This paper introduces the principle of multimedia data transmission and multicast in network,then de-scribe the method of realtime multimedia data transmission using multicas t based on IP protocol and how to implement it.

• 本文介绍了多媒体数据的多点网络传输技术,并详细阐述了如何利用IP多播协议实现多媒体数据的实时多点输的方法,同时给出了编程实例。