Optical communications – Diagnostic testing – Fault detection
Reexamination Certificate
2004-07-30
2008-12-30
Leung, Christina Y (Department: 2613)
Optical communications
Diagnostic testing
Fault detection
C398S030000
Reexamination Certificate
active
07471896
ABSTRACT:
Provided are an optical transponder that processes a G.709 frame that includes an overhead for operation, administration, and maintenance of an optical channel and an overhead for forward error correction, and a method of detecting and treating errors in optical-channel sublayers of the same. The method includes detecting an error signal or a maintenance signal from a G.709 frame that includes an overhead for operation, administration, and maintenance of an optical channel and an overhead for forward error correction; treating errors in a predetermined layer of a plurality of layers that requires error treatment when the error signal or the maintenance signal is detected or canceled; and investigating a reason for the errors in the predetermined layer.
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First International Conference on Optical Communications and Networks, pp. 289-291, Yunhee Cho et al., “An Overhead Processing Model for OCh-level OAM,” Nov. 12-14, 2002.
Cho Yun Hee
Kim Kwang-joon
Lee Joon Ki
Lee Jyung Chan
Myong Seung Il
Blakely , Sokoloff, Taylor & Zafman LLP
Electronics and Telecommunications Research Institute
Leung Christina Y
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