SDP2327

本文主要研究了W-WAN中GPRS网络的移动视频传输问题。文中探讨了GPRS的网络结构、协议体系以及链路特性，从中我们看出： GPRS网络链路不仅具有一般无线链路数据传输中遇到的延迟大、误码率高等共性问题，而且具有移动通信系统采用蜂窝频率复用方式带来的小区切换， 以及由于通信中链路性能随着地理位置变换而变化造成的GPRS网络中不可避免的经常性遭遇的冗长时延和突变时延。 这使得目前GPRS网络中使用的传统TCP或UDP传输协议均不能适应GPRS自身的链路特性，也不能实现高效的分组传输。-This paper mainly studied the W-WAN in the GPRS network for mobile video transmission problems. The article discusses the GPRS network architecture, protocol architecture, as well as link characteristics, from which we can see: GPRS network link not only has the general wireless link data transmission delay encountered in large, common problems of higher bit error rate, and with mobile communications system uses a cellular frequency reuse methods brought about by cell switching, as well as the communication link performance with the location change and change is inevitable GPRS network, the recurrent encountered lengthy delay and delay mutation. This makes the current GPRS network using the traditional TCP or UDP transport protocol are una

vc编写的sip代理服务器,无需其他的库，直接编译-vc prepared sip proxy server, no additional library is directly compiled

Example of the SIP api using peers!

UDP穿透程序，对于搞音视频会议类软件的网友可以参考参考学习-UDP-penetrating procedures, for engaging in Class audio and video meeting software users can refer to the reference study

vovada公司根据sip协议开发的关于voip通话的协议栈的源代码sip-1.3.0版-vovada companies under the development agreement sip voip calls on the protocol stack source code sip-version 1.3.0

MPlayer-mingw32-1.0rc1.zip

IP电话的VoIP设计资料. 请大家帮忙顶！-IP phones VoIP design information. Please help U.S. Top!

openh323 通用库 -Universal library for openh323

网络IP电话 V1.2 (源代码).rar-V1.2 IP telephone network (source code). Rar

H.225 video-telephone protocol,specification document,for reference only