Hello Nick,
Does the modem need to dial "9" to get an outside line? Do you need 10-digit dialing, and if so, have the long distance rules been set up? Can you monitor (listen to) the phone line to see if the modem is correctly picking up the line? (There is often a modem initialization string that will turn on the external speaker so that you can "listen in" to the call.)
I think that in the "[Fax]" section of "xxwin.ini", if you add the line "Test=999 999-999" into the section, the modem will always dial that number instead of the one on the customer record. this allows an easy way of testing the fax transmission with real customer statements.
_________________________
Andrew Bates