Paradyne KeepInTouch 3760 User Manual page 79

Table A-5 focuses on problems you may experience during fax
operation.
Table A-5. Fax Operation
Symptom
Modem cannot
send or receive
a fax
A-10
Issue 3 April 1994
Action
Make sure the modem and PCMCIA socket are
configured for modem operation.
Disable V.17 fax by using the S79 command.
Refer to the Fax Operation section of Chapter 3
or your fax application software user's guide for
more information.