TCU positions

From Virtual Skies MRC

Terminal Control Units are IFR units which provide service to aircraft arriving, departing or transitioning through the TCA (Terminal Control Area). In Canada, the position names are slightly different than other countries.

Radio Callsign - Position Identifier

"Terminal" - *Any sector (_APP or _DEP) will refer to itself as Terminal to transitioning aircraft*
"Arrivals" - _APP
"Departures" - _DEP

NOTE: There is no Approach in Canada! Canada doesn't have TRACONS like in the U.S.!