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Digital Subscriber Line Diagnostic System

  • US 20070071177A1
  • Filed: 08/29/2006
  • Published: 03/29/2007
  • Est. Priority Date: 05/08/2001
  • Status: Active Grant
First Claim
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1. A system for diagnosing an xDSL communication problem, the system comprising:

  • a data source in communication with a remote modem;

    an xDSL modem communicatively coupled to the remote modem via a subscriber loop and communicatively coupled to the data source via a network interface, the xDSL modem configured to receive data from the data source and to transmit the received data over the subscriber loop; and

    a very-low-frequency (VLF) modem communicatively coupled to the remote modem via the subscriber loop and communicating using frequencies within the range of 0-20 kHz, wherein the data source is configured to;

    receive a notification from the xDSL modem of a communication problem between the xDSL modem and the remote modem; and

    in response to the notification, exchange diagnostic data with the remote modem through the VLF modem, the diagnostic data related to a cause of the unsuccessful communication.

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