ex_matelot
area microphone, banter & chat?
All RTF and radar is recorded 24/7.
In addition many Ops rooms have CCTV and open mics strategically placed in the room so that everything is monitored and recorded. These recordings are useful in incident investigations, i.e. were the correct number of controllers in situ at the time of any incident, etc.
Very similar ethos to cockpit voice recordings only with the extra of video capability.