To add to that, POTS isn't always a copper pair from the central office all the way to your house. Often times there is fiber integrated into the loop and/or some multiplexing occurring that requires power to the electronics involved. If the phone company hasn't maintained the batteries at the remote site or doesn't have enough generators to recharge the batteries during a prolonged outage, or just can't physically access the remote site due to the ongoing natural disaster, your POTS phone will also cease to function.Let's keep in mind, that most (especially home) "landlines" are NOT the good old fashioned POTS lines most of us grew up with. They are really VoIP (voice over IP) lines, especially if they are bundled with your internet. If you lose internet, you lose home phone service. Yes, they are still a secondary means of communications separate from cellular, but not as infallible as POTS lines used to be.

We keep the landline for dh's work. And I think the sound quality is so much better on a traditional phone versus cell.
Mine is good old fashioned POTS. Lord, VoIP phones. We got those at work before I retired. The audio quality was AWFUL. VoIP companies are very similar to solar companies, many small companies that go belly up so nobody to support your system. My son worked for an IT company and the owner just got to the point they would not longer work on them. The software companies also often go belly up, and the systems never provided what was advertised.Let's keep in mind, that most (especially home) "landlines" are NOT the good old fashioned POTS lines most of us grew up with. They are really VoIP (voice over IP) lines, especially if they are bundled with your internet. If you lose internet, you lose home phone service. Yes, they are still a secondary means of communications separate from cellular, but not as infallible as POTS lines used to be.
The central office upkeep costs are why I think A.T.&T wants to end landlines. Their central offices here are all set up so that they are always running off those batteries so there is no interruption of service if the shore power goes down. The batteries can run the system without recharging for a week, the diesel generators have a months worth of fuel on site. I got to tour a central office and the key word there is redundancy. Everything has more than one backup.To add to that, POTS isn't always a copper pair from the central office all the way to your house. Often times there is fiber integrated into the loop and/or some multiplexing occurring that requires power to the electronics involved. If the phone company hasn't maintained the batteries at the remote site or doesn't have enough generators to recharge the batteries during a prolonged outage, or just can't physically access the remote site due to the ongoing natural disaster, your POTS phone will also cease to function.
The budget for proactive maintenance went to near $0 a year back in 2005. The outside plant has to be in terrible shape in 2026 after 25 years of neglect.
In my prior job our company provided various telephone companies, including what was once Pacific Bell with a proactive maintenance system for SLC systems. There were back in 2005, millions of phone lines running on SLC systems in California which would require power beyond what is provided by the CO to operate.Their central offices here are all set up so that they are always running off those batteries so there is no interruption of service if the shore power goes down.
What I toured was in extreme Northern California, prior to 1998. They may a big deal of their system being able to operate without outside power for a month.In my prior job our company provided various telephone companies, including what was once Pacific Bell with a proactive maintenance system for SLC systems. There were back in 2005, millions of phone lines running on SLC systems in California which would require power beyond what is provided by the CO to operate.
We still have our land line. It's the same bill as our WiFi so I don't think we pay all that much to have the phone line. I almost never use it.
Funny story;
Just came back from a LAX tournament with my 12 year old. She picked up the receiver on the desk phone in the hotel room and wanted to know what the buzzing noise was.