AT Command Tester is an online tool for testing and learning features of GSM modems. The tool communicates to the GSM device using the serial port and sending AT commands. The serial port of the device are generally configured for various speeds. Some devices are also set for autobaud which means they device can communicate with the external application on any tool.
It has been observed that on some devices, the Autobaud configuration may not work properly with AT Command Tester. You can configure the device for fixed speed as shown below,
In the ‘Command Mode’ tab send the following commands. Then ‘Disconnect’ and ‘Connect’ again.
AT+ipr?
+IPR: 0
OK
AT+ipr=115200
OK