Planet’s Fibre Gigabit SFP Media Converter provides the flexibility of 10/100/1000Mbps Ethernet Media via RJ-45 port with highly stable Gigabit fibre performance. The GT-805A provides auto MDI/MDI-X on its TP port and the DIP switch to configure the Link Fault Pass through function (LFP).
The LFP function includes the Link Loss Carry Forward (LLCF)/Link Loss Return (LLR). This immediately informs administrators in the event of a possible problem of the link media and provide an efficient solution to monitoring the network.
Refer to above PDF Data sheet
Part number – GT-805A Fibre Gigabit SFP Media Converter