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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;

Ethernet Interface	Number of interface	1-RJ45 port
	Support frame length	Maximum Ethernet data frame length support 1536Byte
	Protocol	Support automatic cross network cable recognition ability; Support IEEE 802.3x flow control in full duplex mode; Support Back pressure flow control when half-duplex mode ; Support 802.3 (Ethernet protocol), 802.3u (Fast Ethernet protocol); It can transparently transmit IEEE 802.1d Spanning Tree and IEEE 802.1q VLAN packets.
E1 Interface	Transmission mode	Only provide E1 framing mode
	Interface Impedance	75Ω (unbalance), 120Ω (balance)
	Number of interfaces	Provide 16 E1 interface
	Forwarding Index	Each E1 Ethernet packet forwarding the ultimate rate of 1920Kbps; 16 E1 full load, the ultimate forwarding rate of 1920*16 =30720Kbps
Features	Network management capabilities	Can support the network management; can manage the local / remote
		card device can be placed in multi-slot chassis to use, to achieve central office, remote network management
		desktop without CONSOLE, SNMP interface ;can be controlled by dialing switch, set to Remote devices can realize passive network management
	Clock Mode	Two clock modes are provided: master clock (internal clock), slave clock (E1 receive recovery clock),
	CRC check	Support CRC4 calibration adaptive
	Port loopback	Provides local and remote loopback testing
	窗体顶端 Support mixed insert窗体底端 Support mixed insert	Modular protocol converter can be inserted into 4U chassis, and can be mixed with modular transceiver and optical transceiver products.
Power	Power supply	AC110~240V   DC36V~-72V
	Power consumption	＜5W
Physical Dimension	Internal power supply	430mm*138mm*44mm(Rack-mount)
Working environment	Working temperature	0°C ~ 45°C
	Working Humidity	5%~90% (non condensing)
	Storage temperature	-25°C ~ 70°C
	Storage Humidity	5%~90% (non condensing)

Physical Dimension

Internal power supply

430mm*138mm*44mm(Rack-mount)