Originally Posted by
Runways
I'm also booked to visit, I think she said CTU? Whats CTU?
As mentioned by 1Charlie above, the lady probably said TCU: Terminal Control Unit, which is where the Sydney TMA (Terminal Control Area) is run from.
Basically there are three different types of controllers: enroute, TMA, and tower. Enroute controllers work in the Brisbane/Melbourne centres, the TMA controllers work in the TMA units at Brisbane/Sydney/Perth/Melbourne/Cairns/Adelaide, and the Tower guys, not surprisingly, work in the control towers. But of course, you'd know about that because you've done your research. Good luck