4 voice+4FE+4RS232 E1 multiplexer

•  Based on proprietary integrated circuits; 
•  alarm status can be monitored on the end; 
•  E1 interface complies with G.703, all-digital clock recovery and smooth phase-locked technology; 
•  support FXO voice port FXS ports and ports, EM2 / 4 audio interface, FXO port and PBX docking port and the user is connected to FXS telephone; 
•  providing four expansion interface, can be extended from 1 to 4 asynchronous data, such as RS232 / RS485 / RS422 / Manchester codes; or 1 to 8-way switch, 1 to 4-way voice, or two / four-wire audio, etc.;
•   Ethernet interface 10M / 100M, full / half duplex fully adaptive, support VLAN division; 
•  Each Ethernet ports support Auto-MDIX (cross / straight cable adaptation); 
•  1-4 road voice access, support caller ID function and reverse polarity billing functions; 
•  Support Telephone Number mutual function of each site; 
•  E1 signal can be detected as a barrier to the end device is lost or shut E1; 
• provide two kinds of clock ways: E1 master clock, E1 line clock; 
•  provides three kinds of loopback: E1 local loopback (ANA), the Ethernet interface to the remote loopback (DIG), command peer Ethernet interface to the local loop (REM); 
• There are pseudo-random code test function (PATT), to facilitate the opening line, which can be when one of E1 BERT to use; 
•  E1 can support N * 64k (N = 1-32) rate, that rate is adjustable from 64K-2048K; 
• multiple power mode options: AC220V, DC-48V / DC24V, etc;

  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(100/100M)
    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

  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: Mini Type    216X140X31mm(WXDXH)
            Simple packaging:   274X193X84mm(WXDXH)

            Piece Weight :    mini 1KG 

 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)