Thanks Razvan, /The first logs show that opensips is unable to ping your client over TCP. Most likely because OpenSIPS was restarted and the TCP connection was lost./ I can confirm that opensips wasn't restarted. Not by command and in the logs i don't see a restart.
/The next errors show that opensips is trying to connect to a TCP connection, but it gets a timeout. That's because probably your client is behind NAT, and you cannot connect to it. / As my original post said, the clients are NATted. But, sniffing the traffic (in the client side) i see the TLS/TCP polling every 10 secs from the opensips and the ACK from the client I'm really stuck on this. I'm sure it is not a network problem. -- View this message in context: http://opensips-open-sip-server.1449251.n2.nabble.com/UDP-vs-TCP-TLS-tp7590719p7590787.html Sent from the OpenSIPS - Users mailing list archive at Nabble.com. _______________________________________________ Users mailing list Users@lists.opensips.org http://lists.opensips.org/cgi-bin/mailman/listinfo/users