E1 Interface Line Rate: 2.048Mbps±50ppm

E1 Interface Line Rate: 2.048Mbps±50ppm Line Code :HDB3 Interface Standard: ITU-T G.703 E1 Impedance: 75Ω(unbalance) or 120Ω(balance) Connections : 75ohm DB37 adaptor or 120-ohm twisted-pair (RJ45) Jitter tolerance : finer than G.742 and G.823 10/100Base-T Interface Ports: 2*10/100Base-Tx and 1*100Base-Fx ports Rate: 10/100M, full/duplex auto-negotiation Protocol: Support IEEE 802.3,IEEE 802.1Q (VLAN) Total Memory Sizes: 64MBits SDRAM Physical interface: RJ45, support AUTO