If you are connected to the telephone company Internet they have battery backup and generator backup with a battery powered laptop you would be good to go
Those back up generators usually only have enough fuel to run them at half load for around 48 hours.
Most of them run on propane, a great fuel but not known for its portability.
Where these machines are located mostly is what's called a CO,command office.The small buildings you see dotted here and there in the countryside .These make up the backbone of a telephones ability
to be connected to other COs around them and on and on.Take out one of these and the chain is only as strong as its weakest link. No tower no phone it's that fragile, it's the same with your land line.
Cell and land line traffic can go through the same CO. The phone company's did not set up special COs
for both of them or for the internet. And if service stations can not get fuel, you can bet the phone company's are not fairing any better.
Actually the back up batteries are good for about 2 hrs, the the backup gen sets have two tanks worth of fuel......all I have put in for SWBT-(now at&t are diesel.) They are geared to go longer than 48 hours, A CO is a Central Office. I've done GC work for the telephone Co. since 1986. I've put these in from El Paso to Hobbs.
My oldest brother put them in for Dell City, ENMR, PVT, Leaco, Roosevelt, and AT&T. And they all called the small microwave repeaters a command office. Or a central office, Ive heard it referred to both ways. I guess it depended on who you were talking to at the time. But over 90% of them were ONANs and they ran on propane.
Diesels didn't start showing up until the late 90s. And I have been out with my brother when the largest gen set used by PVT at Cottonwood in a power failure only lasted 48 hours. The misinterpretation here is what's rural and what's municipality. Most all the repeaters were rural, and never had anything larger than a 30kw. Leaco always referred to their microwave repeaters as a command office, and their main office in Lovington as the Central office.
And they still do as far as I know, but if you want proof of this would you like me to start naming names ? Because I sure can, and if you were around during the late 80s I'm sure you will recognize some of them. But if you were in Hobbs back then that would have been GTE , and Leaco.
GTE later sold out to Valor , who sold out to Windstream. I was married to one of these guys.
We all knew the guy from ONAN Corp. very well, who had the maintenance contract on the back up generators on all the sites for about six phone company's.
So I might know something .