Hi All Thanks for providing PJSIP ope source. I am planning to have a simple windows based client, where I should be able to do REGISTER, CALL SETUP, HOLD - basic functionalities. My question is do I need to write any application code. Or pjsua can be used for this purpose. I understand, if I will have a specific GUI , then I need to write GUI code, but from SIP UA perspective do I need to write any extra application code. Thanks a lot. Regards Protea Einer -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20110601/e3b2de85/attachment.html>