TELUS Mobility™
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Symptom Troubleshooting Tips
Modem does not respond to
hang-up command from the
software’s command mode.
Make sure that:
• The Drop DTR on Hang-up is enabled in the communication software.
• The hang-up string setting is ‘+++ATH’.
Computer screen appears
distorted.
Turn off Auto Baud by initiating AT+IPR command. Make sure that the baud rate setting in
your communication software matches the baud rate setting of the modem.
No characters are displayed
on the computer screen
Turn on Local Echo by initiating the ATE1 command.
Images transmitted/received
are of poor quality.
Ensure that the RTS/CTS flow control is enabled in the communication software and is set to
&K3.
Error Messages
The following table outlines error messages that you may receive when sending or receiving data. These error messages will
appear on the computer screen
Message Explanation
NO CARRIER Your connection was terminated, or an attempt to establish the connection failed. Try your
call again and contact your iDEN
carrier.
ERROR
• The command was not recognized.
• The command line maximum length was exceeded.
• An invalid parameter was entered.
• The command line is ready for another command. Make sure that the command (and
parameter) that you entered are valid.
BUSY The number you called is busy. You should try the call again later. The modem is ready to
accept another command.
MODEM
INITIALIZATION
FAILED
Your communication software assumes that Auto Baud is supported by the modem. Make
sure that:
• That the baud rate = 19200 bps.
• If Auto Baud is turned on in the software, it must be turned on in the programming menu
of your modem.
Diagnostic Commands
If a data connection could not be established, you might be able to determine the cause through the AT command interface. The
following steps describe how to obtain modem or system information that will help you with configuration or communication
problems.
1. Close all data applications. These applications may start a retry command that will interfere with your troubleshooting
efforts.
2. Unplug and reconnect the data cable. This will terminate any ongoing data connections.
3. Establish basic computer to modem communication.
4. Administer the following AT command to query for the last “Extended Error Code”.
