Logging incoming calls Asterisk 11

Hi everybody,

I’m an intern working for a company running an Asterisk 11 system.
My mentor asked me if I could log all incoming calls coming from outside the company to a company number that don’t get answered, this is important since it could be people standing in front of the parking gate, which calls a number in our Asterisk system. Anyone that can help me out ? I found the Master.csv where all calls are logged that are made from inside our company (so with one of our extensions) but is there a file that works the other way around ?

The Master.csv should contain all calls, both incoming and outgoing.