Have you tried a different Fax machine?
When you test it, if you pick up the phone when the fax calls, do you hear the fax tones?
The Call Pilot has to be able to "hear" the fax tones to auto detect it.

I have added about 5 sec of dead to the beginning of my Voice Mail greeting just to give time for the fax tone to be "heard" and then transferred by Auto-Detection. Just as a test, try adding some dead air before the AA greeting starts to talk.

If CON is the opposite of PRO
Then what is the opposite of Progress?