What is the process of getting a BBU, and what does it do?

[Bowdon]

After reading an article recently it said that if you're a vulnerable customer you can request a BBU for the ONT, for in case of a power cut.

Does the BBU only power the ONT? Can it also power the router too?

I'm thinking its only powering the ONT. But in case of a power cut, with the phone plugged in to the router, how is this allowing me to make a phone call during a power cut?

Or am I wrong about the purpose of the BBU?

[imjolly]

do you have a good mobile phone signal/service?

[Bowdon]

Yes,
I was just wondering how the BBU worked.

[licquorice · Accepted solution]

It just powers the ONT. You either need a separate one for the hub or a UPS to power both.