Hi, AFAIK, SIP works best with UDP, because SIP handles all the handshake itself. But TLS is based on TCP, which makes SIP handshake useless. How to use TLS over UDP ? -- Khoa Pham HCMC University of Science Faculty of Information Technology -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20130321/bc1986df/attachment-0001.html>