Re: Telephone : Checking for "RTS"



Ryan Weihl <nixnam@xxxxxxxxxx> schreef in berichtnieuws
e1oorr$r27$1@xxxxxxxxxxxxxxxx
R.Wieser wrote:

Hello All,

I'm currently trying to build a Caller-ID (in the Netherlands,
meaning the phone-company uses DTMF to send the CLID).

<snip>

oh, and google for "dtmf decoder", shows ideas for dtmf caller id.
ew

Allready done. No enlightment came from any of the designs. They just
receive DTMF, and only signal a "valid" when certain criterea to the
reception of it have been met. None of them bother to check for
polarity-reversal.

Regards,
Rudy Wieser



.



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