I believe they are coded to specific addresses or whatever the NBNs version of an NMI (like on power meters) is. The old one is staying at the old house, it wouldn't work here anyways, even ignoring any binding that may be active, as the old house has HFC while this new house has FTTC and what I'm pretty sure is an RJ11 jack (though I could be wrong). You aren't meant to take the connection device (the NBN branded box) with you under any circumstances, and it is kinda like the old foxtel boxes in that they remain property of the NBN who just give them to your house for free

But whoever lived here last either took it with them, or never had one. Requests for a new one are lodged through your ISP who then order one from the NBN on your behalf and free of charge, who express post it from their head office up in Sydney

They're also basically little black magic boxes you can see, but never truly touch. As far as I'm aware, there's no setting it up, nothing to log into, and nothing you yourself can do to it. You plug it into the power, then one end into the wall, and the other end into your router

My router is all good, no troubles there. But without the connection box I can't really do anything