The present invention provides a communication device for use with a power line communication system. One embodiment of the present invention forms a bypass device and comprises a LV coupler, a LV signal conditioner, a controller, a MV modem, a first MV signal conditioner, an isolator, a second MV signal conditioner, and a MV coupler. The controller may provide routing functions to give priority to certain types of data, control access to the network, filter data packets, process software upgrades, and provision new subscriber devices. In addition, the controller may monitor, process, and transmit traffic data, measured power data, errors, and other collected data.