Detailed Product Description

   4E1 PDH Multiplexer is developed based on the VLSI chips,it realizes multiplexe and optical transmission of 4 E1 circuits .It holds the function of orderwire phone and user's extension channels.

Technology Features:

  Supplies 4  E1 transparent transport

  Fiber line bit rate is 150Mbps

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

  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

Interface Parameters:

Optical interface:

E1 Interface:

  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 

Orderwire phone:

  Ordinary 2 line phone

  64Kbps PCM coding

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

  Anyone terminal hang up, remote terminal shows busy

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

Working Condition :

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

  Power Consumption : 5W

  Environment Temperature : 0-50

  Humidity:95%,uncondensation

Other Characters:

  Dimension:483mm×44mm×180mm

  Weight:2Kg