Media converter and failure detection technique

Details Media converter and failure detection technique Media converter and failure detection technique

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.

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