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Optimum Voice

Customize Service > Battery Backup

Optimum Voice uses your home's electrical power and a cable modem to provide your home phone service. Like a cordless phone, Optimum Voice will not operate if the power in your home goes out.

A battery backup can be connected to your Optimum Voice cable modem to provide standby power during a power outage.

Optimum Voice battery backups for the following cable modems are currently available at your local Optimum Store or at OptimumStore.com.

Motorola

Motorola

Rechargeable battery backup Model #PB1000 for Motorola SBV4200, SBV5120 and SBV5121XM cable modems

Motorola

Motorola

Rechargeable battery backup Model #515757 for Motorola SBV 5222 cable modems
Scientific Atlanta

Scientific Atlanta

Rechargeable battery pack for Scientific Atlanta WebSTAR DPX2203 cable modems

Scientific Atlanta

Scientific Atlanta

Rechargeable battery backup Model #BA 2200 for Scientific Atlanta DPC2203C cable modems

Each battery backup solution provides the following:

  • Up to 8 hours of stand-by time
  • Up to 6 hours talk time
  • Lithium ion battery technology
  • Installs without tools

Note: To select the correct battery backup, you will need the make and model number of your cable modem. A sticker located on either the side or bottom of your cable modem indicates the manufacturer and model.