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.

媒体中继服务器，用于rtp流的透传。在linux2.6内核上实现-Media Relay Server for the rtp flow through Chuan. Linux2.6 achieved in the core