Traditional landlines are pretty much dead. Everything is voip nowadays.
Back in the day you had phone boxes on the side of your house which were called voiceports. They were wired to either a telephone pole or junction box somewhere in your neighborhood. Thus if your house lost power, your hardwired ttelephone would still work. Not a cordless (uses electricity from the wall jack).
Nowadays home land line services are voip powered by a modem, just like your internet. And in most cases they have a backup battery in case of power failure. It's a "home phone" but it's not the same. You'd have to understand the differences between analog dialers and digital dialers which is an entirely different topic.