@Hemsley 1. You don't need to verify client and server, why create key and cert ? - udp_cfg.tls_setting.verify_client = PJ_FALSE; - udp_cfg.tls_setting.verify_server = PJ_FALSE; 2. Please check, pjsua_transport_create() takes the 2nd parameter as pjsua_transport_config; 3. What exactly is your problem? What do you mean by "TLS will not work"? Can you REGISTER with TLS enabled? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20130401/3a0410cd/attachment-0001.html>