AT command to retrieve user input on call on mobile phone

Question

I know it is possible to answer a call on a mobile phone with the AT command set. But how can I see which number is calling?

After the call is answered I would like the dialer to enter a pin code. How can I retrieve this pin code at the opposite side? Is there an AT command to show what the dialer has entered?

Answer 1

AT commands are used to control the phone and get notified about the phone events. There is nothing to interact with the user, just the phone. So you can surely answer a call using

ATA -> answers the call
AT+CLIP -> set the caller id presentation

In order to see who's calling you have to enable the caller id presentation. The command syntax is sometimes non-standard so my advice is to look on your brand AT manual.