Design and implementation of multimedia conference system on broadcast networks

摘要

An implementation of a multimedia conference system with shared white board developed on workstations under UNIX environment is presented. During the implementation, some design issues are encountered, such as how to choose transport protocols, how to resolve problems of delay jitter, how to setup and manage the connections, how to resolve the lip synchronization problems, how to assign priority to packets, and how to choose encoding schemes for audio and video. These design issues are discussed.