Fax/answering machine software?

[Thomas Cameron <thomas.cameron@xxxxxxxxxxxxxxx>]

All -

Has anyone set up this combo?  I am familiar with mgetty and friends 
doing fax work, but I wondered if there was a software set that was 
smart enough to tell when a voice call comes in and records it as a 
voice mail vs. a fax call being saved as a tiff or whatever.

Thomas