Hi
I found a piece of software to do DTMF decoding with a PIC.
It was writen by Stephen J Harding from down-under. However he did
confirm that it was never tested but offered his notes concerning
this. Maybe someone can inspire him !!

His addr :               hardy@sweng.stortek.com

Oh yes. I remember him mentioning that the PIC isn't realy up to it.
Maybe someone can offer him a MX.

Regards
Cassie Carstens