Duilio Foschi wrote:
>
> Dennis,
>
> >Mitel make a CND device that will pick up the ring detect and all that sort
> >of stuff. As for the DTMF, well guess what Mitel make one of them too that
> >will do both receive and transmit
>
> I need to have all those features in 1 chip

Then there is one, and only one solution : Scenix

Have you even checked out the link?
(http://www.scenix.com/virtual/modem/modem.html#telephony_apps)

There is a ready-to-program version of the app-note with
AT commands on the SX. If you ask them nicely, they'll
probably give you a reference design too.If this is still
not good enough, you are barking up the wrong forest. You
will also have to use AT commands with a PC modem.

--
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