Design And Implementation Of Video Conferencing System Based On Convergence Communication Platform

With the development of human society,especially after entering the Internet era in recent years,communication technology has achieved rapid development.Various technologies are becoming more and more mature.People are eager to seek a more vivid and realistic communication method.The video conference Video conference came into being.The video conference system controls and manages each call based on a well-functioning SIP protocol.They use the SIP protocol for extensibility.At the same time,based on the converged communication platform,the SIP client and WebRTC client are simultaneously included in the platform communication,and the concept of converged communication is truly implemented.This paper deeply studied the SIP protocol,SDP protocol,RTP / RTCP protocol and conference system model,and designs and implements a video conferencing system based on a converged communication platform.For existing the media stream control method of video conferencing system,they do not effectively combine centralized and distributed media stream control methods.In this paper,a multi-party call dynamic control technology is proposed,so that the multi-party call system can adaptively adjust the media stream distribution method.When users opens a video conference,media streaming is smoother and more efficient,and call quality is further improved.The paper first introduced the various protocols applied to the system,and then designs the overall architecture of the video conferencing system based on the converged communication platform,including the design of the conferencing server,the design of the media server and the design of the client connection optimization.A dynamic control technique based on a directed acyclic graph is proposed and implemented.A conference dynamic controller is added to the conference server to implement related dynamic adjustment functions.Finally,this paper tests the video conferencing system based on the converged communication platform.The test results show that the system has good support for multi-user video conferencing,and has been further improved in call quality and media stream transmission efficiency.This system has reached the initial design goal.