I am trying to control the I/O pins with a phone call. When calling the number, the phone call ends instantly, and doesn't do anything.
From Call Utilities I have set incoming call action to 'Answer' and hangup time to 3.
There is nothing in the logs about the call, either in the WebUI or from the console with logread -f.
Controlling with SMS messages works fine, and there is connection to the internet.
My firmware version is TRB2_R_00.07.02.7