MP-4100M-OP-108/ETH/4XSFP18B

4-Channel E1 and Ethernet multiplexer module for MP-4100, Ethernet port, 4 pluggable transceivers: Fast Ethernet/STM 1, Tx – 1550 nm, Rx – 1310 nm, 9/25 single mode (single fiber), laser (WDM), 40 km (24.8 mi)