I know this is slightly off-topic but it is a modification for my Pan1232 to allow it
do some additional tricks.
Does anyone know if a product exists which plugs into a phone line and can then send
RS232 to a computer whenever it hears DTMF on the line? I need to find a way for a PC
to handle someone entering a string of DTMF digits in order to check the number
against a little database. If the number is valid, a relay will close and the call
will then be connected to a pre-recorded message. (The line will be answered by a
TAM).
I would rather not build a DTMF decoder from scratch (I need to make four units in
total), but I know that I *could* use a dtmf decoder IC and have it sent its data
through to the keyboard. I'm just hoping that a gadget already exists so I do not have
to re-invent the wheel.
Mark
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