Hi All I am getting a ringback issue with pjsua. When making a call, the server sends 180 with SDP then 183 progress(without SDP), and after that nothing happens at client end means there is no local ringback or remote ringback... Scenario: INVITE packet to Server........ 100 trying from the server..... 180 Ringing SIP/SDP from server(with SDP)..... 183 Session progress without SDP from server........ and after this no ringback at client end and state remains same "Calling"=>PJSIP_INV_STATE_CALLING. I want to what exactly changes require at the client end, so that it play the ringback. Same server working fine with other sip clients, Can any body have any solution to this problem. Thanks Amit -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20090803/fefaadc9/attachment.html>