Research On VOIP Technology And Application Based On HFC Network

According to the blank of the present domestic VOIP technology application on HFC network, here gives a lot of corresponding research and the test in this article. After summarizing the development of the core protocol of VOIP technology application, it gives the core protocol choice of the application on HFC network which is softswitch. The key research in the paper is the protocol of the access protocol of VOIP application on HFC network. With some investment analysis on system construction using PCMM protocol, here gives a innovative simple protocol which is based on docsis protocol. In the paper gives the methods on how to identify the VIOP data flow and how to guarantee the VOIP data transportation based on a lot of testing and real environment imitation. The difficult problem on VOIP system based on HFC network is QOS guarantee in the access network, there gives a lot of ways to get the better environment on the access network like bandwidth enhancement, modulation upgrading, new technology deploying such as Docsis3.0 etc., configuration of upstream transmit power, reverse path optimizing and noise controlling. Also it lists some most important problems in the beginning of system construction under the simple protocol, here gives the answers and suggestions on the...