2.4.7.1
Test Serial Communication
In the terminal program, type the command:
AT
followed by the Enter key, and the terminal should respond with:
OK
You may need to turn echo on in order to see what you are typing. If you type the
command:
AT
and do not see it being typed on your screen, hit the Enter key, and type the following
command:
ATE1
followed by the Enter key, and the terminal program should respond with:
OK
Type the following command:
AT
to verify you can see the command you are typing. After pressing the Enter key, the
terminal program will respond with:
OK
2.4.7.2
Enable Verbose Error Mode
On occasion, users may run into an error output where the modem outputs "
ERROR
"
to an AT command. Users may enable verbose verbose error mode to see what error
code is occurring by issuing the following command:
AT+CMEE=2
After pressing the Enter key, the terminal program will respond with:
OK
2.4.7.3
Cellular Functionality
Some modems may boot into airplane mode or have their cellular functionality turned
off. To verify that the cellular functionality is turned on issue the following command:
AT+CFUN?
followed by the Enter key, and the terminal program should respond with:
+CFUN: <x>
OK
Where x is the functionality parameter. If it is set to a value other than 1 then the user
will need to put the modem back into full functionality mode with the AT+CFUN=1
command.
PN 1002634 REV 1
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