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Method and apparatus for spectral containment over telephone service lines

  • US 6,711,260 B1
  • Filed: 08/18/1999
  • Issued: 03/23/2004
  • Est. Priority Date: 08/18/1998
  • Status: Expired due to Term
First Claim
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1. A method for providing spectral containment over telephone-type service lines, comprising:

  • selecting a filter having desired spectral characteristics, that passes only frequencies of the desired characteristics;

    connecting the filter in series to at least one loop, said filter intervening between a loop-plant side and a Central Office side of the loop; and

    activating service over said at least one loop, said filter thereby preventing unexpected transmissions outside of the desired spectral characteristics over said at least one loop.

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