EPABX Trainer without P & T Line

The single board trainer with in built I.C. regulated dual channel +12V & -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 :  8K RAM, 32K RAM.
  5. Longitudinal Balance :  60 dB.
  6. Loop Resistance :
     • Extension 600 ohm &
     • CO Line 1200 ohm
  7. Insertion Loss :
     • Extension to Extension : Less than 2dB at 1KHz.
     • Extension to CO Line : Less than 1dB at 1KHz.
  8. Cross talk attenuation :  Not less than 70 dBm.
  9. Idle channel noise :  Not less than 70 dBm.
  10. Dial Pulse ratio :  10 pps +10%.