Works for most plans, even gigabit.
Obviously you cannot apply this code alongside other longer term codes like the "$x off per month for the first 6 months" ones if you're looking for a longer term relationship.
You'll also need proper hardware to take full advantage of gigabit. That's everything from the last mile NBN infrastructure leading to your house, the router (lower end ones that work fine for ADSL and lower tier NBN might choke when flooded with gigabit) and even your motherboard ethernet on your computer (older/lower end motherboards might only have 100mbps ethernet, so you'll need either an adapter or a new motherboard).
*A ‘new customer’ is defined as an individual who has not had an active broadband service with Aussie Broadband in the last six months or hasn’t been an authorised contact, residing at the same address as the primary contact,on an active broadband service with Aussie Broadband in the last six months.
The network connection device (NCD) connects to the NBN network and is ISP neutral. This remains property of the NBN and should not be removed from the home when moving out. You likely also have a router between your NCD and your devices. This may have been Optus supplied.
I had Optus HFC before NBN rolled out in my area. I had an existing CG3000-2 Optus HFC modem router.
When I connected to NBN I first connected with AussieBB and the above router worked perfectly between the NCD and my devices.
However I switched to SuperLoop NBN after several months and the same router would not work with that ISP. I ended up replacing the old router at this point.