This device is the point-to-point optical transmission device developed on the basis of VLSI. The device  provides 1-64*E1 interface, 1-4*10/100/1000M Ethernet interface (Wire Speed 1000M) and 2 expansion interfaces.

This 16E1 PDH Multiplexer is a point-to-point optical transmission device that is developed on the basis of VLSI. It provides 16 E1 interfaces, 4 10/100/1000M Ethernet interfaces, and 2 expansion interfaces.

The device provides 1-8*E1 interface, 1-4*10/100/1000M Ethernet interface (Wire Speed 1000M) and 2 expansion interfaces.

This device is the point-to-point optical transmission device developed on the basis of VLSI. The device provides 1-4*E1 interface, 1-4*10/100/1000M Ethernet interface (Wire Speed 1000M) and 2 expansion interfaces.

This device provides 1-16*E1 interface, 1-8*10M/100M Ethernet interface (Wire Speed 100M) and 1 expansion interface.

This device  provides 1-16*E1 interface, 1-4*10M/100M Ethernet interface (Wire Speed 100M) and 2 expansion interface.

The device provides 1~16 E1 interface; 1~3 10/100M Fast Ethernet interface (Ethernet interface to exchange, wire speed 100M, support VLAN division (logical isolation)); 1*100base-FX optical Ethernet interface; 1 Console.

This device provides 1-8*E1 interface, 1-4*10M/100M Ethernet interface (Wire Speed 100M) and 2 expansion interface.

 This device provides 1-8*E1 interface, 1-4*10M/100M Ethernet interface (Wire Speed 100M) and 2 expansion interface.

This device provides 4*E1 interfaces, 4*10/100M Ethernet interfaces (Wire Speed 100M), and 2 expansion interfaces.

The device provides 1-4 E1 interfaces, primary and backup fiber optical interface connector, 1-4 physical isolation 10/100M Fast Ethernet interfaces, as well as two business expansion interfaces.

Provide 1-8 E1 interfaces, primary and backup fiber optical interface connector, 1-4 channel 10/100M Fast Ethernet interface , as well as two business expansion interface.