java SDK for SIP softphone client

I want to build a SIP client in java. A java class that will register with a SIP registra开发者_如何学Gor and will be able to call another sip client.

Any suggestions?

you can try my softphone if you want, it provides a very simple api. It's called peers:

http://peers.sourceforge.net/

Jsip is a good Java SIP client library. It is stable, RFC-conformant and follows JAIN SIP specification.

http://java.net/projects/jsip