I have an older Panasonic Link2Cell system, KX-TH1212, which used to work just fine with my very much older Motorola flip cell phone, but doesn't completely connect with the RAZR M I just got. It says that it's paired but then lists that it is only a device to hear audio; it doesn't pass the incoming call from the cell to the home phone...very disappointing.
OP, did you buy a new Panasonic system? If so, which one?
Does your Panasonic system download the contacts from your M, in addition to receiving calls?
Can you make a call from your home phone that actually is going through your cell (one of the original purposes of these systems was to allow users to not buy a long distance plan on their landline, which came automatically on their cell phone, and thus make long distance calls with their home phone via the cell)?