? HI ? I have asterisk 1.6.13 running. My ATA are connected via vpn (openvpn) ? Out going calls from asterisk to the ata works fine Incoming calls from the ata to asterisk cuts off with the error msg ? Maximum retries exceeded on transmission 70854efe-4157e3a8 at 10.168.7.103 for seqno 102 (Critical Response) -- See doc/sip-retransmit.txt. [Dec? 6 13:52:43] WARNING[3921]: chan_sip.c:3858 retrans_pkt: ?Hanging up call 70854efe-4157e3a8 at 10.168.7.103 - no reply to our critical packet (see doc/sip-retransmit.txt). I been googling this error and it was mentioned to use t1min= 500 however its only delaying the problem. ? any ideas on what is the cause of this problem. Only 2-3 atas are having this problem the rest are fine ? zakir -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20101206/e1e1b5ca/attachment.htm