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  • Realize monitor of remote equipment from local equipment (Having two row of LEDs, upper row indicate local status, lower row indicate remote status’
  • Provide 4 clock types: E1 master V.35/V.24 external or internal, E1 slave V.35/V.24 external or internal.
  • Active clocks can support inter-clock, external-clock, and line clock.
  • V.35/V.24 interface can connected with other DCE equipments.
  • Standards according ITU-T V.35, G.703, G.704
  • Provides 3 loop functions: local loop, to remote loop, order remote loop.
  • Power supply option: AC220V, DC-48V. The positive and negative terminal can
    be exchanged for DC-48V, easy for installation and maintenance.
  • Have pseudo random code test function, easy the installation and maintenance.
  • Realize rate setting of remote equipment (in slave clock status) when local equipment is in master clock status(unframing device haven’t this function).
  • Network manager interface uses SNMP or RS485

E1 interface parameters:

  • 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; G.704
  • Jitter Performance: ITU-T G.823
  • Clocking options: internal-clock, line-clock

V.35 interface

  • Interface Rate: 2.048Mbps+-50ppm.
  • Interface character: match V.35/V.24.
  • Connector: DB25 male/female (optional).
  • Interface type: DCE.
  • Clocking options: G.703 derived clock, internal/external 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 95% (25°C no condense)Standalone scenario: (set dip swith S5.3 to be on (local timeslot).

Testing scenario using RJ-48 120 ohm E1 interface


Testing scenario using BNC 75 ohm E1 interface


Framed E1 - V35 interface convertor, 75/120, 220V


Framed E1 - V35 interface convertor, 75/120, DC 48 VDC


AN-FE1-V.35 converter provides conversion between ITU-T G.703 standard E1 interface and standard V.35/V.24 interface, can convert E1 channel of SDH, PDH, and other Optical Transmission Equipment or microwave, satellite Equipment to V.35/V.24 channel, Extend V.35 channel of DDN.

Used widely in data communication networks, Connecting with V.35/V.24 interface of Routers and Optical Transmission Equipments without G.703 interface, realize match between different network equipments, and transparent to upper protocol layer.

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Additional information

E1 ports


V.35 ports