Reverse powering system for telecommunications node

摘要

To initiate the transmission of electrical power over a telecommunications connection from a power-collecting telecommunications interface unit such as a customer premises equipment, connectable to a power supply, to a power-receiving unit such as a curbside electrical/optical interface, when a connection is first established, or the collecting unit is first powered up, or in order to re-establish connection after a power outage, control signals are transmitted between low-power modems in the interface units using a low-power communications protocol. This allows the controlled initiation of a larger power output and a higher speed exchange of data once the full telecommunications connection has been established. A low-powered beacon signal is transmitted over the telecommunications connection by the power-collecting telecommunications interface unit on connection to a power supply, for detection by the power-receiving telecommunications interface unit. In the event of a loss of power at the input, the low power modem initiates power management control signals to cause the power-receiving telecommunications interface to shut down certain functions in order to preserve backup power for essential “lifeline” services.

主权项

1. A method of controlling transmission of electrical power, over a telecommunications connection, to a power-receiving telecommunications interface unit from a power-collecting telecommunications interface unit connectable to a power supply, wherein during a dormant phase a high impedance connection is provided between the interface units, the presence of which is indicative that the telecommunications connection is intact, and an active phase is initiated by transmitting control messages between the interface units using a communications protocol capable of operation on power scavenged by the power-receiving interface unit from the high impedance circuit, the control messages initiating the transmission of a larger power output over the telecommunications connection from the power-collecting telecommunications interface unit to the power-receiving telecommunications interface unit.