From what I read, even those aren't "real circuits switched lines" any more, just a thin shim over an internal VoIP network. So you might as well bring the VoIP closer. Our house phone wires - and phones - are plugged into an ATA, and that connects to voip.ms - at "normal landline" usage, that costs about $5/month and we still have our old house phone number.
Of course it stops working if anything happens to our internet access, but we do have the cell phones well, and the answering machine lives in the cloud (and emails an MP3 if someone leaves a message) so the house number is never truly offline.
Of course it stops working if anything happens to our internet access, but we do have the cell phones well, and the answering machine lives in the cloud (and emails an MP3 if someone leaves a message) so the house number is never truly offline.