How does it work? A Verizon technician installs a small box with an antenna in your home. It plugs into an electrical socket and a telephone jack, which powers all the telephone jacks in the house. The device also accepts AA batteries or has a rechargeable battery pack if there is a power outage. Three AA batteries provide 36 hours of standby time.

via After Sandy’s destruction, Verizon switches to all-wireless service in Mantoloking | The Asbury Park Press NJ | app.com.