It provides 1-16 E1 interfaces, primary and backup fiber optical interface connector, 1-4 physical isolation 10/100M Fast Ethernet interface (independent four-wire speed 100M, total bandwidth is 4*100M), as well as 2 business expansion interface.

Provide 1-16 E1 interfaces, primary and backup fiber optical interface connector, 1-8 physical isolation 10/100M Fast Ethernet interface (independent four-wire speed 100M, total bandwidth is 8*100M), as well as one business expansion interface.

The device provides 4 ethernet port and 2 AUX port which is for transmitting other data such as RS232/RS485/RS422,dry contact closure, two optical interface for optional 1+1 auto protection switch (APS).

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