1.Movable panel, all the unit cards can be hot swapped

2.Power wire, network management interface, 2 V35 interfaces, 4 2M interfaces, 8 DB 25 to connect with the voice line.

3.Point-to-point mode, adopt 2 E1 ports, to make 1+1 protection.
Using one optical cable route, then use the microwave to backup. So when the cable is break off, the network software will switch automaticly to another E1 port until the cable is repaired

4.Multiple E1 ports in use as cross connect equipment, for point to multiple points. 2 channels of V24/RS232 interfaces and 2 channels of NX64Kbit/s V.35 interfaces.