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Auxiliary power for telephone distribution system

  • US 5,623,531 A
  • Filed: 06/22/1994
  • Issued: 04/22/1997
  • Est. Priority Date: 10/22/1986
  • Status: Expired due to Fees
First Claim
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1. An arrangement comprising:

  • a central telephone exchange having a pair of source terminals across which is provided a source voltage;

    the central telephone exchange also being characterized by having a central optic connect means operative to connect with an optic fiber means;

    plural pairs of ordinary telephone wires, each one pair being connected with the source terminals by way of a current control means exclusively dedicated to said one pair of telephone wires and functional to prevent more than a certain maximum magnitude of current from being supplied thereto;

    optic fiber means connected with the central optic connect means and extending to each of plural locations outside of the central telephone exhange; and

    at each of said plural locations, a telephone-type apparatus connected with one of the plural pairs of telephone wires and characterized by having a local optic connect means connected with the optic fiber means;

    the telephone-type apparatus being further characterized by;

    (i) being functional to convert electronic signals to optic signals and/or vice versa;

    (ii) being functional to receive and/or transmit telephone signals and/or other information signals along the optic fiber means; and

    (iii) drawing electric power from said one of the plural pairs of telephone wires for use in the process of converting electronic signals to optic signals and/or vice versa.

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