Computer networks were designed to connect computers on different locations so that they can share data and communicate. In the old days, most of the data carried on networks was textual data. Today, with the rise of multimedia and network technologies, multimedia has become an indispensable feature on the Internet. Animation, voice and video clips become more and more popular on the Internet. Multimedia networking products like Internet telephony, Internet TV, video conferencing have appeared on the market. In the future, people would enjoy other multimedia products in distance learning, distributed simulation, distributed work groups and other areas.