Method and apparatus for use in supplying power over a telephone line
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United States of America Patent
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Oct 23, 2018
Grant Date -
Nov 10, 2016
app pub date -
Dec 24, 2014
filing date -
Dec 31, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A system comprising customer premises equipment including a reverse power supply unit and an access node to which the customer premises equipment is connected for permitting telephony devices connected to the customer premises equipment to make and receive telephone calls via the customer premises equipment and the access node. The reverse power supply unit is suitable for supplying electrical power from the customer's premises to an access node via a twisted copper pair, the reverse power supply unit including a power consumption signature detector operable to detect if the power drawn from the reverse power supply unit corresponds to a signature power consumption pattern indicative of a telephony device being in or transitioning into an off-hook state when connected directly to the reverse power supply unit and not being connected via a current limiting interface.
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