Research Application Of Internet Protocol Television System

With the developing and popularizing of network technology, computer network, television network and telecommunication network tending gradually. The broadband access business of Xi'an telecom, which takes ADSL and FTTX+LAN as representative, is restricted in developing a prospect under the business competition others. The telecom carriers need to improve the profitability of broadband access business though carrying out new value-added service. IPTV, which combining telecommunication broadband with TV business, is a new value-added service that has a fine prospection.Xi'an telecom does the IPTV experience for promoting the value of IP network and has a good base for IPTV commercial application. In the research tasks, the autheor does the following main work:1. Analyzing the main technique of IPTV system——multicast, which includes its development, protocol structure, member management, message repeat, intra-area route and extra-area route.2. Offersed the project of IPTV bearer network by comparing different position on multicast perform project of IP, DSLAM,ATM with current network and analyzing the IPTV network flux.3. According to the test of experimental network, the author analyzes the result of the experience and summarizes gain of the experimental network and finds some problems in it. Finally the author puts forward a kind of prospective layout for IPTV bearer network.All we do will provide good reference to the large-scale commercial application of IPTV bearer network and the evolution of IP network.