Hello, I am running Asterisk 11 on CentOS 6.4 with SIP clients (Yealink phones). All the SIP clients are on a LAN, so no NAT is involved. I have been experiencing an intermittent problem where a call will be successfully answered, but then dropped by Asterisk 32 seconds after it is answered (with a "Retransmission timeout reached on transmission" error). Here is an example of this happening in the asterisk console: http://pastebin.com/7LDwHAJe
This problem only happens a fraction of the time, so I have been unable to enable SIP debugging before it happens to get a capture. However, usually the caller will just call back immediately and then the call will work without a problem. It sounds like SIP Timer B is what causes the call to be dropped if an ACK to the INVITE is not received within 32 seconds. How can I determine if this is the case and how can I resolve this "Retransmission timeout" problem? Here is my sip.conf: general] directmedia=no directrtpsetup=no dtmfmode=rfc2833 context=internal allowsubscribe=no qualify=no disallow=all allow=ulaw allow=alaw allow=gsm localnet=10.10.32.0/255.255.248.0 [123] secret=111111 host=dynamic type=friend Thanks! Andrew Martin -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
