Thanks. I know that line quality is a factor, and I know I could get a 50$ fax with a PSTN line (that is what I have now). But I have my reasons to want to setup a fax over IP, and I want to keep going. Where do I find info on this debug mode? Is there a detaild log in Asterisk that show exactly what happens when the fax is trying to come in? Also, could this console output help? - Executing SetVar("IAX2/unlimitel-2", "FAXFILE=/var/spool/asterisk-fax/1137584712.0.tif") in new stack Jan 18 06:45:15 WARNING[24824]: pbx.c:5960 pbx_builtin_setvar_old: SetVar is deprecated, please use Set instead. -- Executing RxFAX("IAX2/unlimitel-2", "/var/spool/asterisk-fax/1137584712.0.tif") in new stack Jan 18 06:45:15 NOTICE[24824]: channel.c:1903 ast_read: Dropping incompatible voice frame on IAX2/unlimitel-2 of format slin since our native format has changed to ulaw -- Hungup 'IAX2/unlimitel-2' Mike ------------- Just a quick note, make sure /var/spool/asterisk-fax/ exists and is writable by whatever asterisk runs as. Assuming your connection is good enough, I had "LINE ERROR"s because app_rxfax aborted right after the handshake as it would not write the output file. I think there is a debug mode in app_rxfax that may shed some light. Otherwise see Alexander's reply about the connection quality. --Luki