Troubleshooting And Online Help Resources - 3Com 000839-08 Manual

T
ROUBLESHOOTING AND
PROBLEM DIAGNOSIS
The computer Your modem
or software might not be
will not turned on.
recognize the
modem.
You may not be
entering modem
commands in the
proper manner.
If you are using
an external
modem, the COM
port may not be
enabled.
You may have a
COM port/IRQ
conflict.
O
NLINE
POSSIBLE SOLUTION
Make sure the modem is turned on. The power switch is on top of external modems.
The CS light on the front panel should be lit. If you installed an internal modem, it
should power up when the computer is turned on.
Type in all upper case (AT) or lower case (at).
Refer to your computer's manual for information concerning enabling COM ports
(usually involves altering the bios settings, motherboard jumpers, and the operating
system).
WINDOWS 95 USERS: Uninstall the modem from your computer. In Device Manager,
determine what COM port and IRQ settings are free on your system. Set the jumper
shunts on your modem's jumper pins to these free settings, using the diagrams below as a
guide. If no IRQ setting is available, you may need to move a device off of an IRQ in
order to free it for use by your modem.
COM 1
COM 2
COM 3
COM 4
H R
ELP ESOURCES
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