How can I connect my cell phone to my landline?

Episode 1285 (29:36)

Brian from Lakeview Terrace, CA

Brian wants to use an old phone with his cell phone so he doesn't have to always use it. Leo says that there are devices that use voice over IP or VOIP. The chatroom says that Panasonic has a link to cell system but he'd have to buy a new phone to use it. Another option is to pair his cell phone to Google Voice and have that ring his landline at home.