System and method for pre-qualification of telephone lines for DSL service using an average loop loss

  • US 6,826,258 B2
  • Filed: 06/20/2002
  • Issued: 11/30/2004
  • Est. Priority Date: 06/20/2002
  • Status: Active Grant
First Claim
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1. A method of qualifying a line for high speed data services, comprising:

  • a) measuring power dissipated in the line at a plurality of frequencies in a first range below a first frequency;

    b) mapping the measured power dissipations to a value representative of the average loss in the line over a second range of frequencies that extends to a second frequency, the second frequency being higher than the first frequency;

    c) using the value representative of the average loss to predict the data rate of signals transmitted in the second range; and

    d) qualifying the line for high speed data services when the predicted data rate exceeds a predetermined threshold.

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