ADS and CPDLC
I understand that ADS is a psuedo radar point on the ATCO's screen and CPDLC is a text type messaging system. My question is, besides the aircrafts callsign and altitude, does ADS show other information like the ETA of the next waypoint etc? Is CPDLC real time visible for the ATCO ie the controller sees what the pilot sees on the aircraft equipment at anytime or is it only readerble as a position report sent by the pilot. Also can the ATCO call the CPDLC info down anytime he wants? Thanks