here's a schematic for the phone plug :
Ps - on your new accessory (w/ multiple plugs), you could either pick up a the female receptacle at a parts store (under $5) and use 3M splice taps on the phone power plug. Like this:
Or, cut the plug off your new unit and use 3M splice taps on them to wire to the phone power plug. Know that the wire for the center of the plug (in your new unit) is the + and wire to the barrel is the ground.
Good luck
