I understand that the battery backup for the phone lasts about 8 hours. That is not enough for a significant blackout. Can I order an additional battery backup unit?
I have the small desktop version of the ONT. The model is I-211-M-K. So I would need the battery backup unit that goes with this. Is this available to purchase? I don't see why it shouldn't be. If a customer wants more hours of backup time in case of an emergency, then we should be able to have it.
Thanks.