System and method for power feeding a line coupled to an exchange
First Claim
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1. A system in a customer premises comprising:
- at least one local power unit coupled to an electrically-conductive line; and
a power-feeding unit coupled to said line, said power-feeding unit adapted to provide power over said line to said at least one local power unit without disturbing operation of an exchange coupled to said line.
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Abstract
In one embodiment, the present invention is directed to a system and method for power-feeding a line coupled to an exchange without disturbing the operation of the exchange. The system may include a power-feeding unit coupled to the line and an adapter coupled to the line, the adapter also coupled to or embedded in a current-consuming device coupled to the line.
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Citations
20 Claims
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1. A system in a customer premises comprising:
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at least one local power unit coupled to an electrically-conductive line; and
a power-feeding unit coupled to said line, said power-feeding unit adapted to provide power over said line to said at least one local power unit without disturbing operation of an exchange coupled to said line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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- 11. A power-feeding unit adapted to provide power over an electrically conductive line by feeding alternate current or direct current to said line without disturbing operation of an exchange coupled to said line.
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14. A method comprising:
providing power over an internal telephone line without disturbing operation of an exchange coupled to said internal telephone line.
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17. A method comprising:
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reflecting high DC resistance to an internal telephone line when said internal telephone line is on hook or when an exchange is generating a ring signal on said internal telephone line; and
reflecting high AC impedance to said internal telephone line when said internal telephone line is off hook.
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18. A method comprising:
providing power over an electrically conductive line by feeding alternate current or direct current to said line without disturbing operation of an exchange coupled to said line.
Specification