![](http://pdfasset.owneriq.net/c/14/c14181b8-e53d-48ea-9e0a-9b5f11a44182/c14181b8-e53d-48ea-9e0a-9b5f11a44182-bga.png)
Black Box®LB1350A/LB1351A
10
If there is a fault in the outgoing path and the remote device is FEF compliant (see
below) then the F/O LINK LED will go OFF on both the local and remote devices. In this
way we avoid the possibility of having a FX Link ON indication at one end while, in
reality one of the data path is disrupted.