This variable defines and provides information whether the
EPON device uses FEC as defined in the [802.3ah] clause
65.2 for EPON. When noFECEnabled(1) the device does not
support FEC mode When fecTxEnabled(2) the device supports
the FEC transmission mode. When fecRxEnabled(3) the device
supports the FEC Receive mode. When fecTxRxEnabled(4) the
device supports the FEC transmission and receive mode.
Writing can be done all the time.
This attribute is relevant for an OLT and an ONU.