Silent Answer - how to do it? (like adaptive answer)

[Bob Berman <rjberman@mindspring.com>]

How can I get hylafax to work with my Supra modem to do Silent
Answer? The AT command to turn it on in the modem is AT+FAA=4 and
this feature works fine in Win95.

Silent Answer means the call is answered by the answering machine,
but the modem continues monitoring the line for fax tones, and when
it detects them it goes into fax mode and does not hang up. At one
time (Summer '96) I had hylafax working with this, but it no longer
does and I can't recall what I did to get it going.  Currently it
seems as if hylafax times out and hangs up (ATH). My
RingsBeforeAnswer is set to 6, my answering machine is set to 4
rings. I even pushed RingsBeforeAnswer up to 12, but hylafax still
issued an ATH.

PLEASE HELP!!