Error detection/correction and fault detection/recovery – Pulse or data error handling – Transmission facility testing
Reexamination Certificate
2005-01-04
2005-01-04
Lamarre, Guy J. (Department: 2133)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Transmission facility testing
C370S245000
Reexamination Certificate
active
06839872
ABSTRACT:
A media converter allowing a test mode to be activated from cable side and allowing easy detection of a failure and failure location is disclosed. A media converter includes first and second physical-layer interfaces and a memory connected between the first and second physical-layer interfaces to temporarily storing received data. When a trigger signal has been received at one of the first and second physical-layer interfaces, a response signal to the trigger signal is sent from a corresponding physical-layer interface back to a source that transmitted the trigger signal. The trigger signal is one of a specified modulation link signal and a packet having an illegal length that is not permitted in a network to which the media converter belongs.
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IEEE Standard 802.3, 1985, p. 24.
Allied Telesis Kabushiki Kaisha
Lamarre Guy J.
McGinn & Gibb PLLC
Trimmings John P.
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