CXR Larus FO-4E1T1R-2TTX-C FO modem 4x E1/T1 G703 RJ45 120/100 Ohms, switch 2x 10/100BaseT trunk at 45 Mbps, 2 slots for SFP module , 1+1 protection, w/o mudule, management over consol port or Ethernet in Telnet/SNMP. Metal box, DC 48v internal power supply.