Posted by coupdgras
This is a copy of a post I made in another forum -
We purchased a unit from CellAmericas (www.cellamericas.com) that is a blue tooth adapter and a cellular docking station. We connect the bluetooth module to the docking station base, plug the cell phone into the cigarette lighter adapter in the car, in the garage, and now can send and receive calls in the home on normal corded or cordless phone using our cellular phone minutes. This is too cool! Our garage is about 100 feet from the fartherst part of our house, but it still works great. And they gave us a discount on top of what we found to be the lowest price.
Here is a photo: