Design And Implement Of Videoconferencing System Based On H.323

Recently, video conference has improved rapidly in practice and been used widely in military affairs, economy and culture. The function has developed from the simple Video Conference to integrated services such as remote learning system, remote monitoring system and remote medical system etc, video conference will be in a new development generation. Now ITU H. 322 suggests, one of international video conference standards, is a standard applied and consulted widely. With the rapid development of IP networks, video conference system designed based on H. 323 suggests is more mature-developed, interconnectible, economical and used more widely. Compared with SIP protocol, H. 323 suggests support the mode better known as the multipoint conference with centralized management. So it gives H.323 suggests an obvious advantage in the military field.Under this circumstance, the paper introduces some basis knowledge of video conferencing system at first, including classifying, components, developing situation and so on. The design and implement of ITU-T H. 323 multimedia application system is discussed in this thesis. Secondly video conference system complying with the ITU-T H.323 protocol is achieved, which can transmit multimedia data on intranet. Finally, the summarization and prospect of videoconferencing system are given.