At 10:32 AM 3/17/00 -0800, you wrote:
...
> Other than the last choice, most stuff is going to take more parts than
>just buying a DTMF decoder chip. Such a chip will also probably work
>better (fewer false outputs)
>
>Harold
>

Most decoder chips also have an AGC circuit, so lots more dynamic
range.

- Dan Michaels
Oricom Technologies
http://www.sni.net/~oricom
==========================