hello, by using following command, pjsip should use tcp but is using udp ./pjsua-x86_64-unknown-linux-gnu --id sip:pjsip at 192.168.0.45--registrar sip:192.168.0.45:5061;transport=tcp --no-udp please guide. -thanks -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20111029/fc4c64a6/attachment.html>