Open your terminal emulator program (PuTTY, Tera Term, etc.) and navigate to the “Serial”
category, as shown in the image below. The serial settings should be set to the following values:
Baud Rate:
115,200 bps
Data:
8bit
Parity:
none
Stop:
1bit
Flow Control:
none
After you have configured the serial port with the settings listed above, select “Open”. A
command prompt terminal should open automatically. You are now ready to communicate with
your device!
3.4.2. Testing the Serial Communication
The following set of AT commands are quite useful. Therefore, these commands will be used to
verify that you successful established a serial connection with the modem:
a. Verify basic communication with the modem
Command:
AT
Response:
OK
As you can see from the image below, AT commands are
not
case sensitive.
b. Enable Error Result Codes and turn on Verbose mode
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