AT Commands
Chapter 3
Troubleshooting
T
his chapter describes troubleshooting procedures you can use in the unlikely event you
encounter a problem with your OMEGA CDMA Modem.
Problem
Solution
OMEGA is powered on and connected to
DTE, but does not respond to commands.
Be sure the modem and DTE are using the same
port (baud rate) settings.
Open the OMEGA and verify that the
DSR
LED
is ON. If it is OFF, check the seating of the
transceiver.
When I initiate a call, the OMEGA
responds immediately with
NO
CARRIER
.
Use a telephone to verify that the number you are
dialing is valid and not busy.
Use the AT command
AT+CSQ
to display the
signal quality. If the first number is below 20, you
may have poor reception from your current
location. If the second number is 99, you are not
getting the required wireless signal from your
location.
Use the RSSI DIP switch to display and check the
received signal strength (see Table 2-2 on page
13).
OMEGA does not answer incoming
telephone calls automatically.
Try the solution for initiating calls.
Use the AT command
AT&V
to display most of
the modem configurations. Verify that the value
for the Register
S0
is greater than 1.
Some data corruption is observed during
data exchanges via a remote modem.
Your selected data transmission rate needs flow
control. Use Switch 6 to enable flow control (see
Table 2-2 on page 13).
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