Comment by bzzzt
8 hours ago
There are still landlines in use (although they mostly use VOIP instead of analog phone lines). All cheap cordless phones I know run DECT. It's more than enough speed for speech and more stable than wifi.
The AVM Fritz product line of consumer modem/routers all include a DECT modem for registering extra handsets for voice but they have their own proprietary handsets that support TCP/IP over DECT for things like audio streaming or sending extra media like a caller photo.
I've never really liked talking on cellphones and got a grandstream cordless DECT phone that runs over a voip line probably a decade ago. One of my favourite purchases.