基于语音传输的电话会议系统源代码，非常值得借鉴和学习

GSM 06.10 13kbit/s RPE/LTP 语音压缩算法 -GSM 06.10 13kbit/s RPE/LTP voice compression algorithm

视频会议系统，使用RTP协议。可以实现多人视频语音会议-video conferencing systems, the use of RTP. People can achieve video voice conferencing

eXosip is a GPL library that extend the capability of the oSIP library. It aims to implement a simple high layer API to control the SIP for sessions establishements and common extensions.

对STP协议的介绍，详细介绍了结构，以及如何实现-STP agreement on the introduction, detailing the structure, and how to realize

支持gnu/linux和windows等平台的语音编解码源代码。-Support for gnu/linux and windows platforms, such as voice codec source code.

本文档可以告诉您　如何在libosip的基础上开发即时消息-this document can tell you how libosip development on the basis of instant messaging

程序源码 很通用的！！可以借鉴-procedure is a common source! ! Reference

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

企业电话语音录音管理系统,本系统 采用人机对话的操作方式，界面设计美观友好、操作灵活、方便、快捷、准确、数据存储安全可靠。  系统可以进行来电显示和来电接听等功能。  提供电话拨出功能，可以通过程序拨出电话。  提供客户管理功能，记录客户信息，并可以在拨出电话时以电话簿的形式显示客户信息。  提供电话录音功能，当电话接通时开始录音，当电话挂断时结束录音。  提供录音管理功能，可以通过程序修改录音文件的存储位置。  系统最大限度地实现了易维护性和易操作性。  系统运行稳定、安全可靠。 -the use of man-machine dialogue mode of operation, beautiful and friendly interface design, operation flexible, convenient, fast, accurate, secure and reliable data storage.  system can receive Caller ID and call functions.  set aside to provide telephone functions can be allocated through the telephone process.  management capabilities to provide customers, record customer information, and can be allocated at the time of telephone directory information of the client form.  Telephone recording function to provide, when the start recording when connected to phone, phone to hang up when the end of recording time.  manag

H323服务器端程序，用到pwlib和openh323 -H323 server, using pwlib and openh323