IMC Networks MediaConverter/1 Operation Manual page 10

What is TP/TX Link Loss?
TP/TX LinkLoss is another troubleshooting feature. When a fault occurs on the
twisted pair segment of a conversion, TP/TX LinkLoss detects the fault and passes this
information to the fiber segment. If a media converter is not receiving a twisted pair
link, TP/TX LinkLoss disables the transmitter on the media converter's fiber port. This
results in a loss of link on the device connected to the fiber port.
What is Link Fault Pass-Through?
Link Fault Pass-Through (LFPT) is a troubleshooting feature that combines TX and FX
LinkLoss from both the local and remote media converter modules (only available on
the 100 Mbps TX/FX -00, -10). LFPT is enabled by turning on both FX and TX
LinkLoss on both modules. This feature allows both end segments of the conversion
to detect link faults occurring in the media conversion chain. FiberAlert can also be
added to the remote side of the pair to further assist in locating a fault.
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