Callisto from Plantronics

Callisto is a cordless home phone that can be hooked up to a home phone jack. It's also a headset phone. It includes a bluetooth headset that will allow you to communicate with your cell phone. So basically if your talking on your home phone and your cell phone rings, you can pick up your cell phone call on your house phone. Callisto is also a VOIP phone, all you have to do is connect it to your computer.

http://www.nbc11.com/technology/14013039/detail.html