have searched this list and others, and see other pepole having this issue. However, I have not seen how to fix it. Sep 12 18:52:36 WARNING [4620]: chan_sip.c:1835 retrans_pkt: Maximum retries exceeded on transmission 778f89593967725f0abe40eb1752504c (at) 10.10.206.53 for seqno 1620 (Critical Response) Sep 12 18:52:36 WARNING [4620]: chan_sip.c:1835 retrans_pkt: Hanging up call 778f89593967725f0abe40eb1752504c (at) 10.10.206.53 no reply to our critical packet. ------------------ Original ------------------ From: "asterisk-users-request"<asterisk-users-request at lists.digium.com>; Date: Thu, Dec 23, 2010 10:52 AM To: "229838677"<229838677 at qq.com>; Subject: confirm 7544ab1cb7b90cb7d6583f225fe16c45193d0c45 Mailing list subscription confirmation notice for mailing list asterisk-users We have received a request from 125.70.77.55 for subscription of your email address, "229838677 at qq.com", to the asterisk-users at lists.digium.com mailing list. To confirm that you want to be added to this mailing list, simply reply to this message, keeping the Subject: header intact. Or visit this web page: http://lists.digium.com/mailman/confirm/asterisk-users/7544ab1cb7b90cb7d6583f225fe16c45193d0c45 Or include the following line -- and only the following line -- in a message to asterisk-users-request at lists.digium.com: confirm 7544ab1cb7b90cb7d6583f225fe16c45193d0c45 Note that simply sending a `reply' to this message should work from most mail readers, since that usually leaves the Subject: line in the right form (additional "Re:" text in the Subject: is okay). If you do not wish to be subscribed to this list, please simply disregard this message. If you think you are being maliciously subscribed to the list, or have any other questions, send them to asterisk-users-owner at lists.digium.com. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20101223/2108442a/attachment.htm>