Peers is a very minimalistic SIP User-Agent. It s a softphone, written in java, and it has been tested on linux and windows. It allows a user to call from one PC to another on a local area network, using SIP/SDP/RTP with Ulaw encoding for voice.

Speex工程着力于通过提供一个可以替代高性能语音编解码来降低语音应用输入门槛 。speex的java实现，C实现，手册-The Speex engineering efforts by providing an alternative to high-performance voice codec to reduce the voice applications, the input threshold. the java implementation of speex C implement

mail-1,4 基本的几个语音聊天和语音记录的JAVA 程序-The mail- 1, 4 basic JAVA programs of several voice chat and voice recording