Fax Console

I've recently started working with Fax Console, and am trying to work on some
configuration settings to assist my wife, who is a Travelling Physical
Therapist, in receiving new patient orders via fax. The problem is, the fax
line is on the same line as my home phone number. That doesn't effect my
internet as I have DSL, but I can't seem to figure out how to get the
computer to answer fax calls and let the answering machine get the rest when
nobody is here. Am I out of luck with Fax Console?