2400 BPS Internal Modem  (250-3025)  Testing           Faxback Doc. # 4925

After installation of the Modem before closing up your computer, run the
following test to determine if the COM port you have selected will work:

Run your data communications software in "terminal", "local", or "dumb" 
mode.  In many programs this is the mode entered automatically when the 
program starts. Type: AT press <ENTER>. You should see:  AT  OK

If you see this, you will probably have no COM port conflict. If you do have
a problem when you begin to use the modem, check that the software is still
set to the COM port you have chosen and that it is set for the right speed
(2400 bps or less). If you have a network card in your computer, it may be
using the same interrupt or address as the modem, which could cause a
problem.

If you do not see this, type: ATA  press <ENTER>. This tells the modem to
"answer" the phone. It should start squealing 2 seconds after you press
(ENTER).  Press any key to stop the squeal. If this works, you have set the
port correctly, but there is probably another piece of hardware using the
same port. You must completely disable or remove that hardware for the modem
to work on that port, or set the modem for another, unused port.

If you are having trouble using COM4 (or COM3), try disabling COM2 (or COM1
if you are using COM3) via jumper settings on the computer's main board or 
an I/O card, or via a setup program.

If the modem still does not work, try another COM port. It sometimes takes
trial and error to determine which one will work best.

Power Up and Installation Testing:

Plug in your PC and turn the power switch to ON.

When power is turned ON, the PC will automatically reset. During this reset,
the modem will automatically perform a self-test to verify that it is
functioning properly.

Test the modem by calling a local bulletin board or another computer that 
has a modem.

(css 07/28/93)