QtPhone is a cross

voip 语音编码方式一种G.729源代码，相关算法可以提供研究。-voip voice encoding a G.729 source code, related algorithms can provide research.

一个RTP库，用于音视频的打包实时传输，c语言编写-a library, audio and video for the real-time transmission package, c language

这是一个呼叫中心的源码哦,具体内容大家可以-This is a call center source Oh, everybody can be the specific content of

系列工具的提供 这行的一定要看！-series of tools that provide a look at the OK!

sip协议文本，讲解透彻，有丰富的实例，根据实例阅读，理解深刻-sip text of the agreement, on a thorough and has a wealth of examples, in accordance with examples of reading and understanding the profound

语音聊天系统 采用VB 开发 包含客户端和服务器端-Voice chat system uses the VB development includes client and server

windows 下 一个很好用的VOIp 网守源码~~不错的-windows used in the next one very good source VOIp Gatekeeper ~ ~ good

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

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

SIP的开发包，非常好用-SIP development kits, very handy