help: receiving fax and not answering data

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Gert Doering wrote:
> 
> Hi,
> 
> On Tue, Nov 24, 1998 at 10:20:02AM -0500, Paul Miller wrote:
> > How can I setup mgetty to handle faxes and ignore data calls
> > completely?  I only want mgetty to answer to phone when the fax tone is
> > heard.
> 
> How do you know it's a fax tone before anwering? - it will only work if
> your modem supports "listening into a voice call", but as you write, your
> modem supports it.
> 
> Now you only have to find out how to enable this feature in your modem
> (modem manual) and test what happens - will it only send a RING to the
> host if it has identified the call as "FAX", or will it send some other
> special string?
> 
> gert
> --
> USENET is *not* the non-clickable part of WWW!
>                                                            //www.muc.de/~gert/
> Gert Doering - Munich, Germany                             gert@greenie.muc.de
> fax: +49-89-35655025                        gert.doering@physik.tu-muenchen.de

The fax tone is sent between the first and second ring.  It's called
silent answer/silent answer plus and the code is +FAE=4 for class 1 and
+FAA=4 for class 2 (silent answer plus codes).  Mgetty forces a +FAA=1
code, which is for adaptive answering -- the same thing as silent
answering, but the modem answers the call before it listens for the fax
"CNG" tone.

Will mgetty even pick up if it receives a fax "CNG" tone before it
answers the phone?  if so, how do I change mgetty's forced +FAA=1
string?

I had this working perfectly three years ago with PCBoard...

-Paul