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Loop diagnostics for ADSL systems

  • US 6,725,176 B1
  • Filed: 01/22/2002
  • Issued: 04/20/2004
  • Est. Priority Date: 08/03/2001
  • Status: Expired due to Term
First Claim
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1. A method of performing loop diagnostics in a DSL system, the method comprising:

  • entering a loop diagnostic mode;

    measuring incoming noise during a quiet mode where no signals are transmitted or received;

    receiving a probe signal having known transmit characteristics;

    measuring characteristics of the received probe signal; and

    determining loop diagnostic information based on received probe signal characteristics and known transmit characteristics.

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