Network video conference system is a collection of audio, video, data exchange as one method, audio and video for traversing firewall technology is one of the key technology of the realization of network video conference system. Audio and video firewall traversal techniques are to solve the port mapping problem between public and private network, in the limited test conditions without additional hardware and auxiliary equipment, efforts is mode to seek a solution and simulation test, finally, this paper proposes the firewall traversal trace method and successfully applies to the network video conference system. In heterogeneous network, it can realize the audio and video NAT firewall traversing, hold the vido conference with desktop level and large screen in the condition of lacking the bandwith resource, and achieves the effect of HD. It is successfully applies to a certain group video conferencing project, the operation effect is good.%网络视频会议系统是集音频、视频、数据交流为一体的多媒体交流方式,音视频防火墙穿越技术是实现网络视频会议系统的关健技术之一.音视频防火墙穿越技术解决公网与私网之间端口映射问题,在有限的试验条件下不额外增加硬件和辅助设备,努力寻求解决方案并进行仿真试验,最终,本文提出防火墙穿越的微量化方法并成功运用于网络视频会议系统中.在异构网络中能实现音视频防火墙NAT穿越,在带宽资源紧张的情况下可进行桌面级和大屏幕级的视频会议,并达到高清的效果,成功应用于某集团视频会议项目中,运行效果良好.
展开▼
