The Auerswald ETS 4308i ISDN PBX Reverse Engineering Project是一种完全开放式的源客户端软件适用于the Auerswald ETS 4308i ISDN PBX。它的目的是为有效地使用LCR-feature of the PBX 提供工具，为改换PBX的配置，为读取电话数量，为将ISDN-D-channel-protocol of the PBXzuop作为输入源或者isdnlog来使用。-ETS 4308i ISDN PBX Reverse Engineering Project is a completely open-source client software applicable to the George Mason ETS 4308i ISDN PBX. It is designed for the effective use of LCR-feature of the PBX with the tools to change the configuration of PBX, telephone number for readers to be ISDN-D-channel-PBXzuop protocol of the input source or isdnlog to use it.

开发一套易用的网络通信包，以C＋＋形式对功能进行封装。做的相当不错，包含开发文档及代码说明 -development of a set of easy-to-use communications network packets to C++ form of a wrapper function. Doing quite well, including the development of documents and code Description

H323到PSTN的网关 -Gateway from H323 to PSTN

VOIP电话源程序-source VoIP telephone

实现局域网内点对点的音频通讯，数据编解码使用G.729,16:1的压缩比，数据传输使用UDP协议。音频模块可在公网内经行通讯-LAN communications within the peer-to-peer audio, data, use codec G.729, 16:1 compression ratio, data transmission using the UDP protocol. Audio module can be in the public network through the communication line

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.

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

Java Secure RTP source code

关于IP电话的文章-The article on the IP phone