The tfc 1000s20 intelligent fiber converter works with the tfc 1600 chassis system or as a standalone unit this converter is a single mode sc type fiber converter that supports snmp and spans distances up to 20km 124miles ports include 1 x 1000base t rj 45 port and 1 x 1000base lx sc type port features sc type single mode fiber port connects over distances of up to 20km 124 miles 1000base t gigabit copper port supports full duplex mode supports port level snmp management functio