On Fri, 11 Oct 2019, Ted Hatfield wrote:
First of all DSL is not pots.
[....]
DSL is a data service that runs on the subscriber loop at the same time as the voice service. This service is not required to be battery backed and will invariably stop working when power is cut at the customer end point.
That is not why people are surprised. When the house doesn't have power, and doesn't have home generator or UPS, (most) people are less surprised their DSL or Cable modem and VOIP doesn't work anymore. The reasons I saw people angry on twitter was no Comcast service even when they had power at the house (utility, generator, UPS). Their Comcast service died quickly, even when the home had power but the Comcast outside plant didn't seem to have any backup power. DSL modems also need power at the home, but the telco providers seem to have more backup power in the outside plant or central offices. That meant DSL worked as long as the house had power (or a home generator or UPS). I know, rich people problems. Rich people can afford backup generators and got upset when their Internet and TV didn't work.