Hi @BVRoberts, yes thats right.
Once NBN is not working the landline wont work as well. This is because NBN technology works as such, both shares the same line. This is why the landline is plugged at the back of NBN modem only. Please note even if there is a power outage the services wont work (some NBN boxes are connected with a power back up) .
You can discuss this in detail and what other options are available with our chat team.
Thank you for reply. Just seems strange that there is no backup for a service that is primarily part of an agreement but there is back up for another part.
Would a back up service for a landline be available from another provider?
A contributor to this thread has suggested this is possible.