switching modem speaker on while vgetty answers call

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Hi!

After "mgetty" has been working very reliable for a couple of months I replaced
it with "vgetty" this weekend and played around with it.

I wondered whether it is possible to turn on the modem speaker while a voice
call comes in. Since my "Elsa MicroLink 33.6 TS" is capable of telephony I
added "AT#VLS=6", "AT#SPK=0,1" to "vgetty"'s modem init... and... it *worked*!
Now the modem behaves like an answering machine and I can hear who's on the
line before I pick up the phone or not... :-)

Maybe this is possible with other voice modems...

BTW: I found the hack in mgetty-1.1.9/voice/libvoice/detect.c to distinguish
between "Dr. Neuhaus" and "Rockwell" modems... Well, why not adding a new field
to "modem_type_struct": the "ATIx" command which guaranties a proper detection
of the modem. For newer modems "ATI9" is a candidate since Windoze95 uses this
for plug'n'pray detection (AFAIK) and it seems that modem vendors like those
"produced for `95"-stickers... :-/

With this modification it would also be possible to distinguish between
MicroLink TS and TQV :-) since I am not quite sure whether the latter has the
"AT#VLS=6" command... Can somebody test that?

Michael

-- 
"As part of the conversion, computer specialists rewrote 1,500
 programs; a process that traditionally requires some debugging."
   -- USA Today, referring to the IRS switchover to a new
    computer system.
.