G.703 Co-Directional (Co-Dir 64K) to V.35 Converter
G.703 Co-Directional (Co-Dir 64K) to V.35 Converter Co-Directional 64K E1 Interface Converters Interface Converters AD-Net Selangor, Malaysia, Kuala Lumpur (KL), Petaling Jaya (PJ) Supplier, Suppliers, Supply, Supplies | Catacomm Corporation Sdn Bhd


64k-V.35 / V.24 interface converter provides ITU-T co-64K G.703 standard E1 interface and standard V.35 conversion interface between the physical layer / V.24.
The G.703 (Co-Directional G.703) interface divides 64Kbps cycle into 4 unit intervals, it uses“0101” represent  “0”, “1100” represent “1″. By alternating transformation polarity of the adjacent block, binary signals convert three-level signals. In every 8th group destroyed block of alternating polarity, thus to transmit 8KHz timing signal. By the above coding, G.703 co-directional 64Kbps signal could achieve transmitting the timing signal of 64KHz and 8KHz and 64KHz and the data signal of 64Kbit/s in the same direction with a pair balanced line.
64k-V.35 / V.24 interface converter provides ITU-T co-64K G.703 standard E1 interface and standard V.35 conversion interface between the physical layer / V.24. Network to provide secure communications between devices of different interfaces, the seamless connection. Equipment E1 channel section applies to transmission equipment slots available, and the need to transfer data to and only V35 / V24 export of the occasion, the data interface mode is DCE, with DTE or DCE device docking.


  • Based on self -copyright  IC.
  • Provide 2 clock types: Co-Directional G.703 master clock and G.703 line clock.
  • Have two Loop Back Mode: G.703 interface Loop Back , V.35 interface Loop Back.
  • Have pseudo random code test function, easy for installation.
  • Support 120 Ohm balance.
  • 35 interface supports hot-plug.
  • Provide 3 clock types: Internal clock, External clock,E1 line clock.
  • AC 220V, DC-48V, DC+24V, DC Power and Polarity-Free.


  • Co-Directional G.703 Interface  
Interface Standard:                               comply with protocol ITU-T G.703;
Interface Rate:                                        64Kbps±50ppm;
E1 Impedance:                                       120Ω (balance);
Jitter tolerance:                                     In accord with protocol G.742 and G.823
Maximum Transmission Distance:  up to 500m
  • 35/V.24 interface 
Interface rate:                        64Kbps
Interface Standard:              Compatible with V.35/V.24 standard
Connector:                              DB25
Connect Mode:                       DCE
Clock Type:                             G.703 internal clock, external clock
  • Working environment
Working temperature:                  -10°C ~ 50°C
Working Humidity:                        5%~95 % (no condensation)
Storage temperature:                    -40°C ~ 80°C
Storage Humidity:                          5%~95 % (no condensation)
Functional Description
Co-Directional 64K-V.35 Converter, V.35 rate 64K
Port Description
One Co-Directional 64K interfaces, one V.35 interface
Power supply: AC180V ~ 260VDC –48VDC +24V
Power consumption: ≤10W
Product Size:  216X140X31mm (WXDXH)

Ordering Information

G.703 Co-Directional (Co-Dir 64K) to V.35 Converter, AC or DC version.


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