| 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. |
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Features
- Relevant to study of Central Switching exchanges or PAB exchanges
- Uses commercial CODECs
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Description
Digital switching techniques and applications are covered, including time and space switching and the control of a digital switch by connection memory. Call state transistion diagrams, which conform to ITU-T SDL format for call progress, are introduced, as well as concepts of call state and state transition, and the three stages of call handling.
The system comprises:
Controller
Digital switching centre board
One, four telephone handset kit
Curriculum Coverage
Local signalling
Digital switch principles
Digital switch
Line scan
Call records
Line records
Line maps
State transitions
Call progress
Manual control
Testing
Traffic
