Method and apparatus for alien device identification in passive optical networks
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United States of America Patent
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Jun 13, 2017
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app pub date -
Apr 25, 2014
filing date -
Jun 13, 2013
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Abstract
A manner of detecting the presence of alien devices, for example ONUs, that are transmitting upstream in an optical access network such as a PON. An alien detection device, for example a properly configured OLT, supports normal network operation and also monitors a selected performance characteristic. When the selected performance characteristic is evaluated to perform within satisfactory parameters, a protocol that includes a command to subscriber devices such as ONUs to go quiet, for example a rogue check, is executed and a signal detector monitored during the quiet period. An alarm may be generated if an alien device appears to be present.
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