A p p e n d i x
A
Troubleshooting
Troubleshooting
A-1
This appendix contains information that will help you solve some of the
common problems you might encounter while using the modem card.
For further assistance, contact your dealer.
Modem does not respond to AT commands
•
There may be a COM port/IRQ conflict. Reconfigure the modem
COM port address and IRQ line.
•
Make sure that you have set the correct COM port and IRQ in the
communications software.
•
Make sure the system is in Terminal mode of your
communications software.
•
Reset the modem to its factory defaults by typing
AT&F
.
Double characters display on your monitor
•
Both your modem
and software
local echoes are on. Turn off
your modem local echo by typing the
ATE0
command.
Modem cannot dial and
″″″″
NO DIALTONE” message appears on the
monitor
•
Check the phone cord connection. Make sure that the jack on the
modem labeled Line is connected to an analog phone wall jack.
•
The modem cannot recognize the dial tone. This is typical in
some corporate PBXs. Use the ATX1 command in your setup
string to enable Blind Dial.
