Battery backup for Connected Voice

Digital phone service will not work in the event of a power outage unless you have a battery backup. There are two different 24-hour battery backup units for digital voice services.

Electrical power is required for non-line-powered voice services like Connected Voice to work. If there is a power outage, VoIP service will not process calls, including those to Emergency 911.

With active batteries, a battery will provide temporary backup power during an outage, allowing basic voice services to keep functioning, including the ability to dial 911. Please note that in the event of an outage that impacts the service network as well, the battery may not guarantee functionality.


You can purchase a battery backup unit from most major electronics suppliers.

Important information about battery backups

  • You are responsible for obtaining, monitoring, replacing and properly disposing of all batteries for the backup unit.

  • We recommend you check the battery unit at least twice a year to ensure it is operating and ready to use in case of a power outage.

  • In the case of a power outage, the battery backup should last at least 24 hours in standby mode. 

  • While under battery power, you may not be able to access the internet.

  • Services such as security alarms may not work while under battery power.

IMPORTANT: Failure to maintain your battery backup unit may result in loss of voice service during a power outage, including a loss of access to Emergency 911 and other services.

More information regarding these units is available on the Precision Power Solutions site. See the battery PP36PB-GRST-2-24D.


For technical assistance or warranty information, contact Precision Power at:

The battery backup units use D size, 1.5 volt, alkaline batteries.

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