I cheated and searched this forum:

Use a cheap alarm clock that starts blinking with a power loss, to confirm power loss. Plug into the same outlet, set the time and when the NT has the wrong time, if the alarm clock is blinking, which it should be, Gloriosky, Zero!

Still don't know what it means though.

Also don't know what a Mitel 9110-110-000 is, so my entry doesn't count.

Now that I think about it, I should have just kept my mouth shut.

Too late, I already hit send. Sorry!