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58-004 Digital Trunk Network System

The Feedback range of Telecommunications training equipment has been designed to provide a modern, efficient approach to training the engineers and technicians working in this field.


  • Four local switching centres
  • Can be easily upgraded from 58-003
  • Easily configurable

In addition to the curriculum covered by 58-002 and 58-003, the trunks network board has three transit switches and extends the work to cover transit switching and signalling. The system can be configured as four local switching centres, to cover simple transit switching, two level transit switching, non-associated signalling and the use of ITU-T type transaction capability messages to control system testing.

The system comprises:
  • Controller
  • Two digital switching centre boards
  • Two, four telephone handset kits
  • A Trunk networks board
  • Curriculum Coverage as 58-003 plus
  • Transit switching centre
  • Transit switch call progress
  • Two-level transit switching
  • Two-level transit call progress
  • Non-associated signalling
  • System testing
  • Additional pictures

    58-002 Digital Switching System

    58-001 Telephony Training System

    Instruments Techno Test inc.

    Instruments Techno Test inc.
    2345, Michelin street, #100
    Laval, Qc
    H7L 5B9

    Téléphone : (450) 681-5777
    Télécopieur : (450) 681-3773

    Printed from: catalogue.techno-test.com/products/6-Educational_Products/43-Telecommunications/289-Feedback_58_004-58_004_Digital_Trunk_Network_System.html
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