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Apparatus for remotely determining fault of subscriber terminals and method thereof

  • US 20060051088A1
  • Filed: 04/05/2005
  • Published: 03/09/2006
  • Est. Priority Date: 09/02/2004
  • Status: Active Grant
First Claim
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1. An apparatus for determining a remote fault of subscriber terminals comprising:

  • a frequency analysis unit recognizing a fault occurrence of a subscriber terminal from an upstream signal and analyzing the frequency spectrum of the upstream signal; and

    a fault determination unit selecting a specific frequency corresponding to the shape of the spectrum, determining a diagnosis signal corresponding to the specific frequency, transmitting a message requesting to upward transmit the diagnosis signal to each ONT, finding a peak frequency from the frequency spectrum of the diagnosis signal transmitted by the ONT, determining a fault of the subscriber terminal by comparing the peak frequency with the selected specific frequency.

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