That's how ours is here. And we're at the end of the line and get several power outages a year. Sad to say our landline isn't useful the way it was most of my life. But old habits die hard...for some reason I still can't imagine not having it.A few years ago the phone company was working on the junction box in our backyard. He said to reduce redundancy and avoid upgrading the whole underground phone system, they were switching landlines over to internet.