... Maneged 1+1 Optic Port 8E1+100M PDH Multiplexer1.OverviewPDH Multiplexer can multiplex 4/8/16E1,Ethernet (2*10/100Mbps) and V.35 signals ... ~90%5.Order InformationF9-120-04FA 4E1 port Multiplexer, 75&120ohm both OK, Optical port: distance:40km, FC/PC, SM1310nm, ... , Standalone, 220VAC power supplyF9-120-04FD 4E1 port Multiplexer, 75&120ohm both OK, Optical port: distance:40km, FC/PC, SM1310nm, Standalone ...