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E1 to 4 channel Ethernet Protocol Converter

This converter provide convertion between ITU-T G.703 standard E1 interface and 4 10/100 Base-T Ethernet interfaces, and 10/100 Base-T channel will transfer it to switches, hubs, routers, bridges, and other devices. The transmission also an be done through fiber multiplexer, that can comprise different segments in LAN. E1-4 10/100BT is a kind of high performance, self adaptive,and long-distance Ethernet bridge. Low cost, small volume, the converter is suit for cost-sensitive bridge application and LAN stretcher or sectionalizer of Bit stream structure. It can automatically learn MAC address in the LAN connected with it, and transmit the destination address as another LAN frame. Transparent to TCP/IP, providing safe and seamless connection between different devices, the device has been widely used in monitoring, networking between WAN and LAN etc.



This converter provide convertion between ITU-T G.703 standard E1 interface and 4 10/100 Base-T Ethernet interfaces, and 10/100 Base-T channel will transfer it to switches, hubs, routers, bridges, and other devices. 

The transmission also an be done through fiber multiplexer, that can comprise different segments in LAN.

E1-4 10/100BT is a kind of high performance, self adaptive,and long-distance Ethernet bridge. Low cost, small volume, the converter is suit for cost-sensitive bridge application and LAN stretcher or sectionalizer of Bit stream structure. 

It can automatically learn MAC address in the LAN connected with it, and transmit the destination address as another LAN frame. Transparent to TCP/IP, providing safe and seamless connection between different devices, the device has been widely used in monitoring, networking between WAN and LAN etc.



  • Based on self-copyright IC;

  • Support 4 Ethernet port switch function and save a Ethernet switch for user;

  • 4*10M/100M Ethernet ports are isolated and realize independent communication; 

  • Ethernet port is half/full duplex, 10/100M, AUTO-MDIX (cross line and straight line) self adaptive; 

  • Provides 3 kinds of loop-back function: E1 local loop(ANA), Ethernet local loop(DIG), and remote Ethernet self-loop(REM); 

  • Pseudo-random code testing (PATT), convenient for the circuit opening, and can be used as an E1 error code instrument;

  • Supports 75Ω unbalanced and 120Ω balanced impedance adaptive,  no need to set;

  • Support E1 channel bandwidth separation;

  • Have flux statistic function. ETH ports offer receive and send frame counter and error frame counter; E1 interface offers error frame counter;


Parameter and index

    E1 Interface

       Line Rate: 2.048Mbps±50ppm

       Line Code: HDB3

       Interface Standard: ITU-T G.703

       E1 Impedance: 75Ω (unbalanced) and 120Ω (balanced)

       Connectors: 75Ω (BNC) and 120Ω (RJ45)

       Jittering tolerance: fine than G.742 and G.823


    10/100Base-T ports

       Rate: 10/100M, full/duplex auto-negotiation

       Protocol: Support IEEE 802.3, IEEE 802.1Q (VLAN)

       MAC Address Entiries: 1024 entiries

       Total Memory Sizes: 64MBits SDRAM

       Physic interface: RJ45 (cross and straight line)



       Desktop device: 212(W) × 138 (L) x 30(H) mm

       Desktop type: 483(W)*140(D)*50(H)


Work conditions

       Voltage: AC180V ~ 260V; DC –48V

       Power:  ≤5W 

       Work temperature: 0°C~50°C

       Storage temperature: -40°C~+70°C

       Relative humidity:  95% (without condensing)

       No causticity and impregnant gas, no rising dust, no strong magnetic field disturbing