AVR-Chat

Hi Greg-

This document has some good information about caller ID service:
http://www.epanorama.net/documents/telecom/cid_bellcore.html

It indicates that the signalling spec for Caller ID is simply Bell 202
signalling. This means that you could go out and find yourself an old
modem, rip out the Bell 202 transciever and phone line interface
magnetics, and theoretically have a workable setup.

You could also use a Texas Instruments TCM3105 modem chip. They have
been discontinued, but are available for under $20US from
http://www.tcm3105.com/

Remember to optoisolate! :)

Good Luck,
Dave

Quoting Greg Koss <gkoss@netzero.net>:

> Hi All,
>
> To deviate from the main topic a bit, I am looking for a source of
> Caller ID chips. I would rather work with the HT9032 series or the
> MC14LC5447.  I can not find a source of these chips that is within
> the price range of a hobbyist.  Does anyone out there now of a source
> for any of these chips, must be DIP, or another chip that does Caller
> ID?  Thanks for all your help.
>
>
>
>
>
>
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