[comp.dcom.modems] Recognizing DTMF input for flow control

gray@s5000.RSVL.UNISYS.COM (Bill Gray x2128) (02/12/91)

I am a complete novice WRT modems and computer/telecom interfaces;
if this is posted to the wrong newsgroup, please accept my profuse
apologies.

I work with a local group that is considering using a 900 number to
disseminate information.  The carriers charge *much* more if you
need them to provide the hardware that handles the call.  In other
words, if my computer can:
1.)  Provide digitized voice output to the phone
2.)  Branch to different messages depending on caller DTMF
     sequences
3.)  Digitize and store incoming voice

I can offer the service much more economically than if the carrier
provides those services.

I know that there are voice digitizers out there.  I do not know what
I use to connect the computer to the phone line.  I imagine that a
regular modem is not the right choice--no need to modulate or demodulate
incoming/outgoing voice or incoming DTMF.  But what *do* I use?

Are there any modems that have operation modes that suppress carrier
and otherwise do as I need?

Any ideas or pointers gratefully received.  If this is the right group,
I'd be happy to summarize and post e-mail responses.

Thanks in adavance,

Bill

-- 
: gray@rsvl.unisys.com                      :                                  :
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