E1 G.703/704 to 4/8 x RS-485 Converter
E1 G.703/704 to 4/8 x RS-485 Converter E1/T1 Interface Converter Series Interface Converters AD-Net Selangor, Malaysia, Kuala Lumpur (KL), Petaling Jaya (PJ) Supplier, Suppliers, Supply, Supplies | Catacomm Corporation Sdn Bhd


AN-E1-4(8)RS485 is E1 G.703 to RS485 converter that realizes data conversion between ITU-T G.703 standard E1 G.703 and 4 or 8 RS485 interface. Date interface mode is DCE, could connect to DTE or DCE device, RS485 can transmit asynchronous 0~115200Kbps self-adapting speed.



  • AN-E1-4(8)RS-485 can realize long-distance monitoring of this end equipment to the far-end equipment (two-row indicator, upper row indicate local status, lower row indicate far-end status);
  • RS485 rate support 0~115200Kbps self-adapt
  • RS485 support hot-plug, connection to DTE or DCE device;
  • 4 or 8 RS-485 interfaces over E1 G.703/G.704
  • Rate selection for each RS-485
  • E1 can support rate N*64k (N=1 to 32)
  • Offers 2 kinds of loop-return function, namely E1 self-looping at local end (ANA) and RS485 self-looping at local end (REM)
  • AC220V and DC-48V for option, and DC-48V is  not divided into positive and negative pole with simple installation and maintenance;
  • Supports  function of pseudo-random code testing(PATT), which brings great convenience for installation, debugging and maintenance of equipment;
  • E1 interface supports 75Ω unbalanced and 120Ω balanced impedance at the same time;
  • Realizes SNMP network management function in our chassis installation


RS485  interface:

Interface character: match RS485
Interface Rate: 0 – 115.2Kbps
Connector: RJ-45
Interface type: DCE or DTE

E1 interface parameter:

  • Channel capacity: 1 Channels
  • Bit Rate: 2.048 Mb/s ±50 ppm
  • Line Code: HDB3
  • Line Impedance: 120 Ohm / 75 Ohm
  • Connector: RJ-45 or BNC
  • Pulse Shape: ITU-T G.703.
  • Jitter Performance: ITU-T G.823
  • clock: inter-clock, line-clock
  • DC: -48V (-36 to -72V); +24 V (Optional)
  • AC: 90 to 260 VAC ; 47 ~ 63Hz
  • Power Interface: DC power terminal/AC socket
  • Power Consumption: 8 W maximum
Working environment:
  • Operating temperature: 0 to 50 °C
  • Storage temperature: -20; to +70 °C
  • Relative humidity: 5% to 90% (25 °C no condense)
Application Scenario:

Ordering Information


E1 G.703/704 framed / fractional to 4 x RS-485 serial converter, 48 VDC or 96-260 AC, all country power plugs supported


E1 G.703/704 framed / fractional to 8 x RS-485 serial converter, 48 VDC or 96-260 AC, all country power plugs supported

Additional Information

E1 ports 1
RS-485 Any

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