The Method Of Tri-networks Integration Technology On Campus Network

The tri-networks integration (the integration of telecommunications networks, cable TV networks and the Internet) is one of our country's information industry development directions, from State Council to other department are all actively promoting the implementation of the project. As a new frontier of the development of technology, the testing and the application, the constriction of information campus is in full swing in each University. The application of the tri-networks integration on the campus network reflects that the information construction in colleges and universities are following the national development strategies, and trying to provide a valuable experience on the implementation details.This thesis describes and implements the tri-networks integration that based on the multicast and VoIP technology in the campus. And this paper studies the theory of QoS, such as avoiding the phenomenon of frame loss, echo, desynchronize and so on when transmission video and voice, and find a security mechanism to transmit video and voice well in campus network. The paper laid the foundation of high-definition signal transmission.The theory and research described in this thesis have been achieved in Shanghai Normal University campus network, which shows that the study was practicable and operable.