Reverse power supply method, reverse power supply equipment and reverse power supply system

Abstract

A piece of reverse power supply equipment (300) comprises a power supply module (360), a switch (370), a line testing module (330), and a system control module (350). The power supply module (360) is used for providing electric power resources to cable distribution equipment. The switch (370) is used for controlling power supply of the power supply module (360). The line testing module (330) is used for testing whether a user terminal is connected on a testing line (310) when the switch (370) is opened and the power supply module (360) does not supply power. The system control module (350) is used for sending an alarm signal when the line testing module (330) determines the user terminal is on the testing line (310), and controlling the closing of the switch (370) and power supply of the power supply module (360) after a user cut off the user terminal. The reverse power supply equipment protects the user terminal from being damaged.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a reverse power supply method, and reverse power supply equipment and systems for realizing the method. Background technique [0002] The reverse power supply technology adopts a relative way to name the technology. We usually say that the switch supplies power to the network terminal, and the current flows from the switch to the network terminal as forward power supply. Then, the network terminal supplies power to the switch, and the current flows from The power supply method that the terminal flows to the switch is called reverse power supply. [0003] In the prior art, in the Fiber To The Distribution Point (FTTdp) networking environment, due to the difficulty in obtaining local power at the distribution point DP, supplying power to the distribution point DP has become a major technical difficulty. One of the solutions is to supply power to FTTdp from the rever...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, in the Fiber To The Distribution Point (FTTdp) networking environment, due to the difficulty in obtaining local power at the distribution point DP, supplying power to the distribution point DP has become a major technical difficulty

One of the solutions is to supply power to FTTdp from the reverse power supply equipment (Power Supply Equipment, PSE) in the user's home. Since the twisted-pair wiring in the traditional home is connected in series, if at a certain point Access to reverse power supply, the voltage is not only transmitted to FTTdp, but also to other line interface points in the home. Other interface points are traditionally terminal equipment such as telephones. If this voltage is transmitted without the user's knowledge In the past, some terminal equipment such as telephones may be burned

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