When Someone Calls Your Cell Phone Number The Phones Connected To The Obi Device Ring</br>Cell Phone Dead Spots? Keep Your Obi Device & Mobile Phone Where Cell Reception Is Best!</br>Automatically Or Manually Route Calls From Standard Phones To The Mobile Service</br></br>Product Description</br></br>Use Your Regulartelephones to Make and Receive Calls via Your Mobile Phone's Cellular Service.</br><br/>http://www.amazon.com/gp/product/B008SG4D2E