Patent ID: 7978726

Claim:
A device for connection between first and second wirings, the first wiring being connected to bi-directionally carry a first digital data signal in a first digital data frequency band and to also carry a first signal having power frequency distinct from, and lower than, the first digital data frequency band, and the second wiring being connected to bi-directionally carry a second digital data signal in a second digital data frequency band and to also carry a second signal having the power frequency that is distinct from, and lower than, the second digital data frequency band, and the device comprising: a first connector connectable to the first wiring; a second connector connectable to the second wiring; first and second low pass filters coupled to said first and second connectors respectively and operative for substantially passing the first and second power signals respectively; a first high pass filter coupled to said first connector and operative for substantially passing only signals in the first digital data frequency band; a first modem coupled to said first high pass filter for conducting the first digital data signal over the first wiring; a second high pass filter coupled to said second connector and operative for substantially passing only signals in the second digital data frequency band; a second modem coupled to said second high pass filter for conducting the second digital data signal over the second wiring; a power supply for receiving power from a local power source, the power supply coupled to both the first and second low pass filters, and the power supply for providing the first and second power signals for transmission from the device onto the first and second wirings respectively; and a single enclosure housing said filters, said power supply, said modems and said connectors, wherein: said device is addressable in a local area network.