UserUser, I will try and help (no promises). Capture the following trace on the A800 when this happens: ev +ch hstack hproto Also provide a stick drawing of your topology & call direction, for example: Phone-->PSTN-->A800---IP---GnuGK--->????? Please include all devices in the call flow as it is a pain to have to guess. QEng7 __________________________________ Do you Yahoo!? Yahoo! Mail - 250MB free storage. Do more. Manage less. http://info.mail.yahoo.com/mail_250 ------------------------------------------------------- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt _______________________________________________________ List: Openh323gk-users@xxxxxxxxxxxxxxxxxxxxx Archive: http://sourceforge.net/mailarchive/forum.php?forum_id=8549 Homepage: http://www.gnugk.org/