(FOIRL) An older Standard of fiber optic guideS uSed for carrying 10 MBpSEthernet. The maximum length of a Segment iS 1 km. A FOIRL multiport repeater and tranSceiverS are neceSSary to carry the Signal to multiple deviceS. The more recent verSion of Ethernet over fiber optic cableS iS10baSeFL with a maximum Segment length of 2 km. (1998-06-28)