Shenzhen JHA Technology Co., Ltd is one of the leading manufacturers of hardened Ethernet, PoE, and fiber connectivity products specifically designed for harsh and demanding environments.


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Framed E1-FE interface Converter JHA-CE1fF1

    • Based on self -copyright IC
    • Can realize monitor and control of remote equipment, OAM management data did not take up user’s timeslot and save E1 bandwidth
    • E1 supports any timeslot set, the rate is 64K-2048K
    • The local device can forced the remote device rate follow it
    • Have the function of E1 interface loop back check, avoid the converter crashed because of interface loop return;
    • Have indicator when the device is power-off or E1 line is broken or lose signal;
    • Can set the E1 line that not to send the LINK signal to Ethernet interface while E1 line is broken;
    • The Ethernet interface supports jumbo frames (2036 Bytes);
    • Inter-set dynamic Ethernet MAC address (4,096) with local data frame filtering
    • Ethernet interface supports10M/100M, half/full duplex auto- Negotination and AUTO-MDIX(crossed line and straightly connected line self-adaptable );
  • Typical solution 1

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    Typical solution 2

    342 (3)

    Typical solution 3

    342 (2)


PDH/Voice Multiplexer

Interface converters

Ethernet to E1 Converter

  • Framed E1-FE interface Converter JHA-CE1fF1


    This interface converter is based on FPGA,providing one framed E1 interface and one Ethernet interface to achieve 10/100Base-T Ethernet data transmission on the E1 channel. It is a high performance, self-learning Ethernet bridge. This device is the extension device of Ethernet, using network (PDH/SDH/Microwave) that provide E1 channel to achieve local and remote Ethernet interconnecting with serial interfaces at a lower cost. The device has inter-set loop test function to facilitate the project launching and daily maintenance.

    Product Photo

     342 (1)

    Mini  Type


    • Based on self -copyright  IC 
    • Have Ethernet monitor self-reset function, the equipment will not dead
    • Can achieve the remote device setting any 5 mode of Ethernet and can closed the AUTO-MDIX function; 
    • Provide 2 clock types: E1 master clock and E1 line clock;
    • Have three Loop Back Mode: E1 interface Loop Back (ANA)、Ethernet interface Loop Back(DIG)、Command the remote
    • Ethernet interface Loop Back(REM) 
    • Provide 2 impedances: 75 Ohm unbalance and 120 Ohm balance;
    • Support SNMP Network Management;
    • Can realize monitor of remote equipment temperature and voltage from local equipment;  
    • Can form the structure: Ethernet E1 Bridge(A)---E1 Optical Fiber Modem(B)---Ethernet Optical Fiber Modem (C) 
    • Can form the structure: Ethernet E1 Bridge(A)---Optical Ethernet E1 Bridge (B)---Ethernet Optical Fiber Transceiver (C), can manage (B) and (C) at (A)




    ♦ E1 Interface

    Interface Standard: comply with protocol G.703;
    Interface Rate: n*64Kbps±50ppm;
    Interface Code: HDB3;

    E1 Impedance: 75Ω (unbalance), 120Ω (balance);

    Jitter tolerance: In accord with protocol G.742 and G.823

    Allowed Attenuation: 0~6dBm


    ♦ Ethernet interface(10/100M)

    Interface rate: 10/100 Mbps, half/full duplex auto-negotiation

    Interface Standard:     Compatible with IEEE 802.3, IEEE 802.1Q (VLAN)

    MAC Address Capability: 4096

    Connector:     RJ45, support Auto-MDIX


    ♦ 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)



    Model Model Number:JHA-CE1fF1
    Functional Description 1channel framed E1 – FE converter ,N * 64k rate setting ,With E1 loopback detection function
    Port Description One E1 interface;1*FE Interface
    Power Power supply: AC180V ~ 260V;DC –48V;DC +24VPower consumption: ≤10W
    Dimension Product Size:  216X140X31mm (WXDXH)
    Weight 1.1KG/piece


  • Typical solution 1

    342 (2) 342 (3) 342 (4)

    Typical solution 2

    342 (3)

    Typical solution 3

    342 (2)

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