Your Frontier Digital Voice service uses electrical power to function. If you lose power, you will require a Battery Backup Unit (BBU) to power your phone and keep it connected to make phone calls, including emergency 911 calls.
To be sure you are protected with this function, find your service below to order a Battery Backup Unit. Installing any Battery Backup Unit is optional for all Frontier Digital Voice customers. Please note: Battery backup only provides access to your Digital Voice service during a power outage. It will not work for your Frontier Internet and/or Video Service.
See below for your service. If you're not sure which voice service you have, click to chat with a representative.
FiOS® Digital Voice
For FiOS Digital Voice customers
- Get full details on BBU options, installation and battery replacement: Customer Guide to FiOS Digital Voice BBU
- Buy a BBU for your FiOS service now.
Vantage™ by Frontier® Fiber Digital Voice
For Vantage Fiber Digital Voice customers
- Get full details on installation and battery replacement: Customer Guide for Vantage Fiber Digital Voice BBU
- Buy a BBU for your Vantage Fiber Digital Voice service now.
Vantage Internet Digital Voice
For Vantage Internet Digital Voice customers
- Get full details on installation and battery replacement: Customer Guide for Vantage Internet Digital Voice BBU
- Buy a BBU for your Vantage Internet Digital Voice service now.
FiberHouse & Voice, and Frontier Fiber & Voice
For FiberHouse and Frontier Fiber Internet customers
- Get full details on installation and battery replacement: Customer Guide for FiberHouse or Frontier Fiber & Voice BBU
- Buy a BBU for your FiberHouse or Frontier Fiber & Voice service now.
The FiOS® marks are owned by Verizon Trademark Services LLC and used under license.