l Realize the transparent transmission of Ethernet data in 1 ~ 16E1 circuit;

l Ethernet interface 10M / 100M, full / half duplex fully adaptive, VLAN protocol support;

l Each Ethernet port supports AUTO-MDIX (cross line and straight line adaptation);

l CRC alarm threshold can be set to automatically segregate the transmission line with poor quality and cut in unidirectional direction. When the error rate of 2M branch in one direction exceeds the threshold, the direction is cut off and the other direction is not affected; that is, the two directions of the Ethernet transmission can be asymmetric.

l To allow 16E1 has 32ms transmission delay difference. When the difference is out of the allowable range, the system can automatically stop sending data over the E1 with a large delay. During the data transmission of the Ethernet, the frame reordering is performed on the E1 line side to effectively ensure the frame order and increase the transmission efficiency; Really achieve SNMP network management functions; Provides two kinds of loopback function: E1 local loop, E1 to the outer ring;

l Built-in dynamic Ethernet MAC address list (4096), with local data frame filtering;

l E1 interface with ITU-T G.703, G.704 and G0823; does not support the use of signaling time slots; E1 interface module contains Built-in clock recovery circuit and HDB3 codec circuit;

l Equipment supports E1 channel hot swap, and automatically detects the effective E1 channel, the middle will not interrupt the data transfer;

l Support E1 ~ 16E1 flexible configuration, the number of E1 automatically detects the reset and delay and select the available E1 port;

l Support the local system to reset the remote system; with Ethernet monitoring automatic reset function,Not crash;