I think the biggest surprise for me is that there's still anywhere in the country with genuine actual POTS lines. I thought the Plain Old Telephone Service was dead and that those places that still had phone numbers were six feet of phone line to a VoIP converter box to an internet connection.
Just before my mother retired as a school secretary, she was telling me all the hell they had to go through to keep a fax machine running in the age of IP telephony.