The device is to provide two E1 access 1 +1 backup protection ,30 phone output .part of the device is whole digital circuit .the device is reliable , low power consumption, high integration, small size, Easy to install and maintain. Many telecom operators customers rent E1 line , then they can use this device to open 30 telephone by the Rented E1 line, so that the headquarters and the branch can communicate by phone freely.

● based on independent intellectual property rights of integrated circuits;

● E1 interface in line with G.703 recommendations the use of all-digital clock recovery and smooth phase-locked technology;

● Provide two 1 + 1 backup E1 interface the main backup function the main E1 disconnect spare E1 work to ensure that the business is not interrupted;

● Voice port to support FXO / FXS / two four-line EM / two-wire audio / magnet phone interface FXO port and program-controlled switches docking FXS port and the user’s telephone connected;

● 1-30 voice access support caller ID / reverse polarity billing / fax function;

● Telephone interface to support the two sides of the site of the number of features;

● Can detect E1 signal is lost when the end of the device shutdown or E1 unreasonable;

● Two clock modes are available: E1 master clock E1 line clock;

● (EA) Ethernet interface to remote loopback (DIG) and command the remote interface to the local loopback (REM) of the Ethernet interface.

● Pseudo random code test function (PATT) easy to open the line that can be used as an E1 error meter to use;

● A variety of power supply options: AC220V DC-48V / DC24V etc .; support AC + DC; AC + AC; DC + DC and other dual power backup mode;

● Telephone interface with lightning protection lightning protection to GB / T17626.5 (IEC61000-4-5) short-circuit current wave 10/700μs open peak output voltage 6KV standard;

◆   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

◆   FXS Phone Interface

    Ring voltage: 75V

    Ring frequency: 25HZ

    Two-line Impedance: 600 Ohm (pick up)

    Return loss: 40 dB

◆   FXO Switch Interface

    Ring detect voltage: 35V

    Ring detection frequency: 17HZ-60HZ

    Two-line Impedance: 600 Ohm (pick up)

    Return loss: 40 dB

◆    EM 2/4 Line

    AD: 0dB

    DA: -3.5dB

    Two/Four-line Impedance: 600 Ohm

    Return loss: 20 dB

◆    Power

    Power supply: AC180V ~ 260V；DC –48V；DC +24V

    Power consumption: ≤10W

◆    Dimension          

    Product Size:   19inch       485X200X45mm(WXDXH)

    Simple packaging:  9inch    522X198X82mm(WXDXH)

    Piece Weight :    2.4KG

◆   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)