windows under the STUN server, the test can be run through windows

基于QTopia的SIP IP电话源码，在LInux下编译，支持DTMF,G711,GSM-Based on the SIP IP phone qtopia source, in the compiler under LInux to support DTMF, G711, GSM

linphone是运行在linux下的一个不错的软电话，希望能给大家开发带来点帮助-Linphone is running on linux a good under the soft phone, hope that I can bring to help the U.S. to develop

在开发sip通话或者h323的时候，都想需要作认证，所以这里给出本人开发的一个很小的digest认证流程的小例子。-call in the development or sip h323 time, and they all want to require certification So I developed here is a very small digest authentication process small examples.

RealNetworks公司的Helix 的客户方部分源码．-RealNetworks Helix client part of the source code.

本程序在 Windows XP、Visual C++ 6.0 环境下编译通过,但需要rtcdll.dll文件（一般在Windows系统安装目录下的system32文件夹中）。另外，需要摄像头和麦克风等设备。 -This procedure in Windows XP, Visual C++ 6.0 compiler environment, but need Rtcdll.dll file (usually in Windows system directory under the system32 folder). In addition, the need for camera and microphone and other equipment.

sip的学习参考文档，对初学sip的用户有较高的参考价值-sip learning reference documentation for novice users sip has a high reference value

华为海思芯片的音频处理，包括采集声音，组包文，然后发送。-rpt send。

此软件可以很顺利的实现网络对话，这样对网络编程的初学者很有帮助的-software can smooth network dialogue, the network programming beginners helpful!

GSM 06.10 13 kbit/s RPE/LTP语音压缩-GSM 06.1013 kbit/S RPE/LTP voice compression