Thanks a lot Vlad!!!, I guess the TCP/UDP was the problem. I followed your advise and now it works. -- View this message in context: http://opensips-open-sip-server.1449251.n2.nabble.com/SIP-2-0-477-Send-failed-477-TM-Route-tp7595929p7596568.html Sent from the OpenSIPS - Users mailing list archive at Nabble.com.