For the Zoom V.FAST 24,000 modem, you should change
ATE1Q0V1 OK AT&FS0=0&C1&D2W1 OK (see the manual for the meaning of
the commands). After that, everything should work. (I got very euphoric
My own experience with my Zoom VFX 28.800 is also quite good, but it doesn’t seem to like automatic fax/data distinction too much, that is, some data calls are “recognized” as fax and fail miserably. Dunno how to fix it, I run my Zoom as data-only.
Fax polling doesn’t work.