Patent ID: 7039317

Claim:
A reconfigurable node for a hybrid fiber cable network, the node including (i) one or more fiber slots each housing a transmitter or receiver for interfacing with a head end, (ii) one or more coax slots each housing an RF brick for interfacing with subscribers; (iii) one or more RF plug-in modules for providing connectivity between the one or more fiber slots and the one or more coax slots, the RF plug-in modules including a plurality of connection points, each connection point being connected to a fiber slot or a coax slot, the node comprising: (a) a fiber impedance element connected to each of the fiber slots, each fiber impedance element associated with the transmitter or receiver in that fiber slot, each fiber impedance element having a different impedance value; (b) a coax impedance element connected to each of the coax slots, each coax impedance element associated with the RF brick in that coax slot, each coax impedance element having a different impedance value; and (c) an impedance sensing circuit to detect a DC level associated with each of the connection points of the one or more RF plug-in modules, wherein the DC level corresponds with the impedance element in a respective fiber or coax slot, for determining slot location of transmitters, receivers or RF bricks in a given configuration of the node.