EPABX Trainer without P & T Line



The single board trainer with in built I.C. regulated dual channel + & -12V and +5V power supply, Four nos. of phone for extension line, P & T line simulator helps to study the working principle & circuitry.

 The trainer helps to study the following features :

  1. Experiment on Tone Generator & Ringer.
  2. Experiment on CO Line Interface Module.
  3. Experiment on Extension Module.
  4. Experiment on Dial tone.
  5. Many more operations.

 Salient features :

  1. P & T  Line simulator.
  2. Four nos. phone.
  3. Distinctive Ringing.
  4. DTMF / Pulse.
  5. Multiple trunk groups.
  6. Music on hold.
  7. Paging with customer provided amplifier & speaker.
  8. Retention of Programming during power failure.
  9. DOT line busy indication on the Exchange.
  10. Easy installation.
  11. No Air – Conditioning required.
  12. And many more features.

Technical Specifications :

  1. Technology                   :           Microprocessor based.
  2. Microprocessor            :                        Z 80 Fully non blocking
  3. Speech  path                 :           Program  controlled
  4. Memory                           :                          8 K RAM , 32 K RAM  
  5. Longitudinal Balance :                        60 dB.
  6. Loop Resistance          :
  1. Extension 600 ohm   &
  2. CO Line 1200 ohm

 

  1. Insertion Loss             :
  1. Extension to Extension :                Less than 2 dB at 1K Hz
  2. Extension to CO Line :                   Less than 1 dB at 1K Hz

 

  1. Cross talk attenuation :                 Not less than 70 dBm.
  2. Idle channel noise         :               Not less than 70 dBm
  3. Dial Pulse ratio               :                   10 pps  +10 %    


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