Try this for a single modem chip 2400bps solution:
http://www.ustr.net <--- click modem button.
You can buy a kit of the modem chip there.

Wagner.


Darren Logan wrote:

> Is there such a thing as a MODEM CHIP ?, if so, where can I find out more
> about them. This could be interesting.
> I would imagine though, such a TRANSCEIVER chip would be expensive.
>
> Current loop - yes that's a possibility, although digital would be preferable.
>
> Darren