Instruction manual

Using LinkLoss and FiberAlert

In a typical central site to remote site media conversion, it is recommended the

LinkLoss and FiberAlert features are enabled as indicated in the following:

FiberAlert and LinkLoss

Feature Enabled Fault Location Port Affected

FiberAlert Remote Side Only Fiber Fiber

TX LinkLoss Remote Side (or both) Twisted Pair Fiber

FX LinkLoss Host Side (or both) Fiber Twisted Pair

WARNING

Do not enable FiberAlert on both modules when using them in pairs. This will cause them to

lock up when a fault occurs on the fiber. Only enable FiberAlert on the remote module.

Link Fault Pass Through (LFPT)

Link Fault Pass Through is a troubleshooting feature that combines TX and FX

LinkLoss from both the local and remote modules. LFPT is enabled by turning on

both FX and TX LinkLoss on both modules. This feature allows either end of the

conversion to detect a link fault occurring at the other end of the media conversion

chain.

Regardless whether a break occurs on a copper or fiber segment between the End

device and the media converter, or between the two media converters, End devices

at both ends.