Hola Alejandro:
On Sun, 4 Feb 2001 09:37:28 +0000 Alejandro Lieber <[EMAIL PROTECTED]> wrote:
> On 4 Feb 01 at 2:11, Samuel W. Heywood wrote:
<snip>
> Sam: thank you very much for your program.
> I have done a similar program but in QBasic.
> But I live in a city of more than a million persons, and the police
> don't monitor from which telephone the call is from.
> What I need is to send a prerecorded message.
> I was thinking of recording a message as a wav file and play
> it in a sound board.
> I can connect the line output of the sound board to the microphone
> input of the modem board (not a win modem).
> At this point, I only need the AT intruction to the modem, so that it
> can input an audio signal and send it to the telephone line.
> The modem is Cirrus MD120.
> It has an instruction: +VSP=1 (Speakerphone on/off control) but does
> not work for me.
> Is there any another standard AT command so one can use the
> microphone female input jack (and external speaker) found in almost
> all real modems ?
I believe there is some way you can use the AT command set so as to cause
the modem to pause until the call is answered and then have as an automated
response the output of a WAV file directed thru the speaker input of the
modem. Setting this up as a do-it-yourself project would require some
research and experimentation. Have fun, and learn about some very
interesting stuff.
BTW, I know that the kind of technology you are looking for is available.
The telephone companies and the utility companies in my area use it to dial
up and send pre-recorded voice messages to their customers to remind them
to hurry up and pay their bills by a certain date or their service will be
terminated. If you are delinquent in your bill payment the machine will
call your telephone number at periodic intervals until it is answered. If
you answer the call, then they will know that you have received their
friendly reminder message. You will get just one reminder. You will not
be called again.
Perhaps you know of some businesses in your area that use this method of
reminding their delinquent customers to pay their bills. The same
technology used by these businesses could also be adapted for your special
use application.
Sam Heywood
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