Loss of Power or a Broadband Outage - FiOS Digital Voice In the case of an electrical outage your FiOS® Digital Voice service that is routed through your normal telephone jacks will continue to operate through your Optical Network Terminal for up to 8 hours. If electricity is not restored by the time your BBU* runs out of power, it will not be possible to make or receive calls, including emergency calls to 911, and your alarm system will not be able to call out. Since your broadband is separate from your FiOS Digital Voice service you will continue to have voice service even if your Internet connection is not working.
*Important Note The Battery Back-Up Unit is designed to use a 12-Volt 7.2 Ah SLA (Sealed Lead Acid) battery. Use of a different battery type is not recommended since other battery types may impact the performance of your FiOS services. Verizon is not responsible for damages which result from use of an improper battery. Batteries may be obtained at verizon.com/fiosaccessories or at a third party retail vendor.
See also: Related FiOS Digital Voice Service topics