55世纪

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

l Ethernet interface 1🍃0M / 100M, full / half duplex fully adaptive, VLAN protocol support;

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

l CRC alarm threshold can be set to automatically segregate the transmission line with poor quality and cut in unidirectiona💫l 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 eꦐfficiency; Really achieve SNMP network management functions; Provides two kinds of loopback function: E1 local loop, E1 to the outer ring;

l Built-in dynamic Ether♛net MAC address list (4096), wi💎th 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 midd💜le will not interrupt the data transfer;

l&nb𝔉sp;Support E1 ~ 16E1 flexible configuration, the number of E1𒊎 automatically detects the reset and delay and select the available E1 port;

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