What about standardising MEL with SYD? When you tell Clearance that you are ready they tell you to monitor Ground as opposed to contacting Ground. Clearance slides over the control to Ground that you are ready and Ground issues pushback when available. Saves the pushback radio call per aircraft and stops the clogging of airwaves.
Spot on.
To further clarify if I may angryrat:
127.60"Sydney Coordinator ABC123 Ready for pushback bay XX"
127.60"ABC123 you time is compliant, monitor ground"
121.70"ABC123 pushback approved"
121.70"ABC123"
It works well.
BNE & ADL even easier, just ask at the right time and you receive.
Can't remember how Perth works...who cares anyway lol..