For long time I was using WINFAX for my fax.
But WINFAX, and other fax programs, doesn't want to recive faxes on my 4 monthes computer.
On incoming call, the modem is answering, reciving the fax and crash the PC at the end.
Sending is OK.
I have tried few fax programs, all the same problem.
Only XP internal fax program can reccive faxes without a problem.
I have ULed a DMP log. maybe it can help.