I have found several references to this problem, but never a solution. I have fixed it before, but it was always by accident... Feb 5 13:27:39 NOTICE[12924]: channel.c:1904 ast_read: Dropping incompatible voice frame on Local/678#######@local_stations-af5d,2 of format ulaw since our native format has changed to slin Feb 5 13:27:39 NOTICE[12924]: channel.c:1904 ast_read: Dropping incompatible voice frame on Local/678#######@local_stations-af5d,2 of format ulaw since our native format has changed to slin Feb 5 13:27:39 NOTICE[12924]: channel.c:1904 ast_read: Dropping incompatible voice frame on Local/678#######@local_stations-af5d,2 of format ulaw since our native format has changed to slin Feb 5 13:27:39 NOTICE[12924]: channel.c:1904 ast_read: Dropping incompatible voice frame on Local/678#######@local_stations-af5d,2 of format ulaw since our native format has changed to slin Feb 5 13:27:39 NOTICE[12924]: channel.c:1904 ast_read: Dropping incompatible voice frame on Local/678#######@local_stations-af5d,2 of format ulaw since our native format has changed to slin Obviously, I have obfuscated the real number with "#########"... Yours, Michael Munger, dCAP 404-438-2128 michael at highpoweredhelp.com <mailto:michael at highpoweredhelp.com> Attachment encrypted? click here <http://www.highpoweredhelp.com/tutorials/wincrypt/> . -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20080205/ee70f56b/attachment.htm