SMART ONE V.92 MODEM
30
Chapter 7
Troubleshooting
Problem:
Your modem does not make a connection.
Solution:
If your modem places calls but neve r makes a connection, make sure you are
dialing the right number. The remote modem may be turned off.
Problem:
You receive bursts of errors occasionally, but otherwise data quality is good
Solution:
The connection may have been established on poor-quality or noisy
telephone lines. Hang up and place the call again to try to obtain a better connection.
Someone may be picking up an extension connected to the line that your modem is using.
If the modem is sharing a telephone line with other telephones, inform the other users
when you will be making a data call.
Your telephone line may have a Call Waiting feature and a call is being received. See
Call Waiting discussion above.
Problem:
Your computer has a built in modem on its motherboard
.
Solution:
If your computer has a built- in modem on its motherboard, Windows may
reinstall it the next time you start up. If you wish to disable the modem in your PC,
consult with your PC User’s guide or its manufacture’s support group.
Problem:
Modem does not respond to AT
Solution:
If the communication software is not configured to the same COM port as the modem,
you will be able to send commands to your modem. Make sure that the software’s COM
port setting matches the modem.
Your computer’s COM port resources may be in use by another device. Make sure that
the COM port resources used by the modem are not being used by any other device.
Verify this by going to Device Manager under Windows Control Panel
Problem:
Modem fails to execute an AT command. Or there was no response after
executing it.
Solution:
Be sure you type
AT
at the beginning of the command line. Make sure the
communications software is configured for the same COM port as your modem. Be sure
your modem is not in data mode when you type the command. Use the escape cha racter
sequence to switch t terminal mode. (The default escape sequence is to wait at least one
second, type
+++
, and wait another second or more).
If you typed a command but did not
receive an
OK
response from your modem: The
E0
and
Q1
commands may be in effect,
disabling echo and responses. Verify this with the
&V
command. To enable echo and
responses type
AT E1 Q0
and press Enter.
