·Embarq Now Centu..
Some POTS lines have limited backup power.
One thing I learned while I worked for a Baby Bell was that anyone served by subscriber line carrier (SLC) is normally limited to as much as Twelve hours backup when batteries are new and as little as Eight hours backup as the batteries age. In some instances the Teleco. will install a portable generator to power the SLC. Unfortunately many of those portable generators are stolen. In 2004 a hurricane hit Palm Beach County. Our area lost power for Four and One Half days. I had two telephone lines. One was connected to a SLC System the other directly to the Central Office. The line connected through the SLC System stopped working after about Ten Hours after power was lost and came back up when power was restored. The other line connected directly to the central office continued to function throughout the entire power outage.