◆ based on self -copyright IC;
◆ independent intellectual property rights based integrated circuit;
◆ provide two kinds of loopback functions: optical interface to remote loopback local loopback or optical interface;
◆ electrical interface uses 75Ω impedance CMI coding;
◆ rack device network management interface uses SNMP;
◆ signal attenuation in the actual running of the cable the cable length change is likely to cause problems are made strict balance and handling to ensure the performance of the entire system;
◆ optional AC 220V DC -48V DC + 24V DC power without positive and negative points.