SIP软电话,官方例子，经过测试，可用,可为IP电话开发作为为能考。(SIP soft phone, an official example, has been tested and available. It can be used as a test for IP phone development.)

peers.用java编写的软电话，基于sip实现了ua，us。 很好的开源学习代码。(peers.Using java prepared soft phone, sip on a ua, us. Good open-source code to learn.))