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l Realize the transparent transmission of Ethernet data in 1 ~ 4E1 circuit;

l CRC alarm threshold can be set to automatically isolate the line with poor transmission quality, and it is unidirectional to cut off when 2M branch;

l When the error rate 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 multi-E1 has 10ms transmission delay difference. When the difference exceeds the allowable range, the system can automatically stop sending data over the E1 with too much delay. Loopback: E1 local loopback and E1 remote loopback;

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; E1 interface module contains a built-in clock recovery circuit and HDB3 code 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 ~ 4E1 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.

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 4 E1 interface
	Forwarding Index	Each E1 Ethernet packet forwarding the ultimate rate of 1920Kbps; 4 E1 full load, the ultimate forwarding rate of 1920*4 =7680Kbps;
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	216mm*140mm*31mm
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

216mm*140mm*31mm

4E1-ETH Protocol Converter.doc