based on self-copyright IC;

4 exchanging 10/100M Ethernet; half/ full duplex self adaptable; also supporting VLAN Isolation;

every Ethernet port supports AUTO-MDIX (crossed line and straightly connected line self-adaptable) ;

provides 2 clock types: E1 master clock, E1 line clock;

provides 3 kinds of loop-return function; namely E1 self-looping at local end; Ethernet self-looping at local end; and Ethernet being ordered to self-loop at remote end;

supports 75¦¸ unbalanced and 120¦¸ balanced impedance at the same time;

has self-reset function of Ethernet monitoring, equipment will not die;

with abundant presentation function of Ethernet data, can detect realtime data communication status

supports exchanging function of 1-4 Ethernet interface, can save one Ethernet exchanging device;

19inch rack for option

Parameter and specifications
E1 interface
Standard: E1 interface compatible with G. 703 standard.
Rate: 2.048Mbit/ są50ppm
Coding: HDB3
Impedance: 75ohm (unbalance) or 120ohm (balance)
Connector: BNC (75ohm) or RJ45 (120ohm)
Jitter Performance: According to G. 742 and G. 823
10/100Base-T
Rate: 10M/ 100M, full/ half duplex self adapt.
Protocol: support IEEE 802.3, IEEE 802.1 P, 802.1Q (VLAN)
MAC address table: 4096 MAC addresses.
Ethernet buffer: 64Mbits SDRAM
Physical interface: RJ45, support AUTO-MDIX (cross over and straight through self adapt)
Dimension
210mm (L) x140mm (Wx 30 mm (H)
Operating environment
Voltage: DC-48V , input range: DC-36V~DC-72V
Power Consumption: (=5 Watts
Working temperature: 0C~50C
Storage temperature: -40C~+70C
Humidity: 95%
No causticity and solvent, dust free, and no strong magnetic interference.