Comment POTS advantages (Score 2) 96
AT&T added that transitioning from copper will save an estimated 300 million kilowatt-hours annually
Yepp, one of the reasons being that POTS will work even during power outages, as long as the central switches are powered. Your VoIP will be down if your house has no power. It probably is more efficient, but that "saving" is also simply shifting some of the power usage to consumers.