Far End Fault Function
The fiber port is facilitated with this function. When the fiber port detects a link failure on its receiving circuitry, it will send out an FEFI (Far End Fault Indication) signal to the remote connected device to indicate a remote fault is detected.
It also is capable to receive FEFI signal sent from the remote link partner if the link partner detected a receiving fault. Upon receiving an FEFI signal, it indicates a link failure occurred on the transmitting path. This function allows the converter to report a fiber link fault even when a link failure occurred on transmitting fiber cable.
