Method and apparatus for diagnosing problems on a time division multiple network access (TDMA) optical distribution network (ODN)
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United States of America Patent
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Jan 10, 2012
Grant Date -
Oct 11, 2007
app pub date -
Aug 31, 2006
filing date -
Apr 5, 2006
priority date (Note) -
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Abstract
A method and corresponding apparatus for diagnosing problems on a time division multiple access (TDMA) optical distribution network (ODN) is provided. An example method may include: (i) measuring no-input signal power level on a communications path configured to carry upstream communications between multiple optical network terminals (ONTs) and an optical line terminal (OLT) in a passive optical network (PON) at a time no upstream communications are on the communications path from the ONTs to the OLT; (ii) comparing the measured no-input signal power level to a threshold; and (iii) generating a notification in an event the threshold is exceeded. Through the use of this method, faults in optical transmitters, such as bad solder joints, can be determined. Such faults may cause errors in parameters, such as ranging or normalization parameters, associated with communications. By determining the faults, the time required to resolve communications errors can be reduced.
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