Supplies 4  transparent E1 and one 100M wire speed  Enternet

  Fiber line bit rate is 150Mbps

  Ethernet interface supports automatic negotiation feature, full duplex/half duplex and 10M/100M working mode

  Ethernet interface supports VLAN

  All necessary alarm functions, supervises the real-time status of remote terminal

  The order wire phone uses the ordinary telephone

  As the remote terminal device, making up of the star-network with the rack device

  Supplies RS232 network management interface

  Supplies one user RS232 transparent data channels

  Single board design, 1U, and 19 Inch standard

  AC 220 or DC-48 is optional

  Bit rate: 2048Kbps±50ppm 

  Impedance: 75Ω unbalanced (120ohm balanced optional, please declare in advance if  you need balanced one)

  Coding: HDB3, according to ITU-T G.703 

  Ordinary 2 line phone

  64Kbps PCM coding

  When local terminal pick up the phone, remote terminal ring and local terminal ring back tone

  Any terminal hang up, remote terminal shows busy

  It will have howler tone when remote terminal hang up and local terminal doesnt in one minute

  Input voltage range : -48V,permit -36V~-72V(DC);220V,permit 165~264(AC)

  Power Consumption : 5W

  Environment Temperature : 0-50

  Humidity:95%,noncondensing