System and method for fault isolation for DSL loop extenders
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United States of America Patent
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Jun 13, 2006
Grant Date -
Aug 15, 2002
app pub date -
Feb 15, 2002
filing date -
Feb 15, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A system and method are disclosed to implement fault detection in DSL loop extenders. The system of the invention includes a plurality of loop extenders coupled to a local loop, a loop extender (LE) test box coupled to the local loop, and fault detection circuitry coupled to each of the plurality of loop extenders. The LE test box sends a tone pair associated with a loop extender over the local loop, the loop extender associated with the tone pair processes the tone pair to generate a response tone and sends the response tone to the LE test box via the local loop. Then, the LE test box determines functionality of the loop extender based upon the received response tone.
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