>When I type:
>   %cu -l /dev/tty00 -s 19200
>
>it says that I connected, but I cannot type any 'at' commands.  The only 
>commands I can do are the ~ commands.

I've seen this exact same problem, and was told that cu expected CD to 
be on in the modem.  This wasn't an option for me.  Instead, lately I've 
been using a fairly kludged setup in which I use dip to dial the phone 
(because cu can't do that) and slattach/ifconfig/route to set up the 
SLIP connection on my end (because I haven't been able to get dip to 
work beyond dialing the phone).

           John Price ***  ****  ****  *** pricej@cebaf.gov
           Where there is no solution, there is no problem.