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.

华为SDP服务WEB应用开发，能够测试打电话，收发短信和彩信。-Huawei SDP Service WEB application development, to test phone calls, send and receive SMS and MMS.