Abstract: A micronode includes an electrical port connectable to a downstream device, an optical port connectable to a head end having an upstream controller and an electro-optical converter connected to the electrical port and to the optical port and configured to convert electrical signals received from the downstream device at the electrical port to optical signals and to convert optical signals received from the head end via the optical port to electrical signals. The micronode also includes an addressable controller configured to receive a micronode polling request from the upstream controller and to determine when the downstream device is sending signals to the head end and begin a response to the micronode polling request in response to a determination that the downstream device is transmitting information to the head end. Also, an associated method of controlling the micronode.

Abstract: A battery backup unit (BBU) includes a housing, at least one battery compartment in the housing with an output terminal, a DC input, a DC output, a path from the DC input to the DC output, circuitry for selectively connecting the output terminal to the path, which circuitry includes a switch, and a controller configured to detect a condition of the path and selectively control the switch to connect the output terminal to the path when the condition is detected, the BBU being incapable of charging batteries in the at least one battery compartment. The path from the DC input to the DC output may include a DC/DC step up converter to help maintain a constant output voltage.

Abstract: An enclosure for housing fiber optic splices between a fiber optic distribution cable and fiber optic customer drop cables includes a first door providing access to a first area of the enclosure housing couplers for receiving terminals of customer drop cables. The enclosure also includes a second door providing access to a second area of the enclosure for accommodating slices in one or more distribution cables. The second area is not accessible via the first area.

Abstract: An enclosure for housing fiber optic splices between a fiber optic distribution cable and fiber optic customer drop cables includes a first door providing access to a first area of the enclosure housing couplers for receiving terminals of customer drop cables. The enclosure also includes a second door providing access to a second area of the enclosure for accommodating slices in one or more distribution cables. The second area is not accessible via the first area.

Abstract: An optical network terminal includes a sleep logic circuit that assumes responsibility for monitoring off-hook transitions after the AC main power supply has failed for a predetermined period of time. The sleep logic circuit is very low power and, as a result, allows the optical network terminal to remain active and provide lifeline support for a much greater period of time.