E1 converter

E1 converter

E1/Ethernet protocol converter





Model 10/100M-E1 is a single port E1 with Ethernet Bridging that provides high-speed LAN-to-WAN connectivity. Plugging directly into the 10/100Base-T port of a hub or LAN switch, the 10/100M-E1 provides E1 access at connection data rates of 2.048 Mbps. The10/100M-E1 is an excellent choice for internet access as well as LAN-to-LAN services.


  • Based on self-copyright IC.
  • Ethernet port 10/100M half/full duplex self adaptable, supporting VLAN.
  • RJ45 interface supports AUTO-MDIX.
  • Provides 2 clock types: E1 master clock, E1 line clock.
  • Has the function of pseudo-random code testing, convenient for opening of the circuit, and can be used as an error code instrument.
  • Have three Loop Back Modes: E1 interface Loop Back (ANA)、LAN interface Loop Back (DIG)、command the remote LAN interface Loop Back (REM) .
  • 75-ohm dual coax and 120-ohm twisted-pair G.703 connections provided, and support 75ohm/120ohm adapt;
  • With abundant presentation function of Ethernet data, can detect real-time data communication status.
  • Can realize SNMP management in our chassis installation


The temperature requirement is not very strict, the device can be working well under terrible environment.

  • working temperature: -10°C – 60°C
  • relative humidity: 95%(without coagulation)
  • No erosive and impregnant gas, no rising dust, no strong magnetic field disturbing

3.1 Power

Adapting module power, voltage range can be wide, with strong ant-jamming function.

With good insulation, stable working status is available

  • power: -48V type, input voltage: -36V~-72V
  • power: 220V type, input voltage: 175V~250V

3.2 Power consumption

Total power consumption: ≤5W

3.3 E1 Interface

  • Line Rate: 2.048Mbps±50ppm
  • Line Code: HDB3
  • Interface Standard: ITU-T G.703
  • E1 Impedance : 75Ω (unbalance) and 120Ω (balance)
  • Connections : dual coax and 120-ohm twisted-pair (RJ45)
  • Jitter tolerance : finer than G.742 and G.823

3.4 10/100Base-T Interface

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

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

MAC Address Entiries: 4096 Entiries

Total Memory Sizes: 64MBits SDRAM

Physical interface: RJ45, support AUTO-MDIX


216(W) × 140 (L) x 31(H) mm




  • TX —— E1 75Ω unbalance, Transmit BNC Interface
  • RX —— E1 75Ω unbalance, Receive BNC Interface
  • LAN —— 10/100Base-T Interface, RJ45
  • 120Ω/E1 —— E1 120Ω Balance Interface, RJ45

5.2 LED Indicator

There are 8 indicator LEDs.

  • LOS——Active Red, signifying E1 signal Lost
  • LOF——Active Red, signifying E1 Frame lost
  • TEST——Active Red, signifying the device is on test status
  • LOOP——Active Red, signifying there is loop on the network.
  • LPWR——Active Green, signifying the local device is power on.
  • RPWR——Active Green, signifying the remote device is power on.
  • LINK——Active Green, signifying a valid 10/100BaseT connection.
  • 100M——Active Green, signifying the rate is 100M.


  • LOS on & RPWR off: the remote device is power off.
  • LOS on & RPWR on: E1 line is cut off.
  • LOS off & RPWR on: normal.

Caution: There may be some mistakes when all indicating lights winks, (except for the PWR light)

  • both of the device are on the status of line clock;
  • both of the device are on the status of master clock while the rate setting is different;
  • the test key connecting are incorrect which cause into the dead cycle.


۱۶۰Km SFP Transceiver