I have only one phone number (and don't want to get a second one).
Obviously, I can't turn on automatic receive because it would answer the
phone instead of the answering machine doing so, and most phone calls I
get are voice calls. (Of course, if I set the number of rings to answer
to a sufficiently large number, the answering machine will respond
first, so I won't get any FAXes.)
I understand that there is something called a "distinctive ring" that
will let FAX machines answer FAX calls (it, if I understand correctly,
uses a separate phone number on ...