Hello
I want to know if it is possible to know the reason when a call is not establish.
For example the phone is busy, not available, out of reach.
And after that display it through the serial port.
Hope you understand what I want.
Don't you have any ideia how to help me?
Is better to use AT commands or the GSM library?
If you are using a BlueVia SIM, call service won't work.
I am not using a BlueVia SIM.
How can i check call service?