EPABX Trainer
Experiments Included:
DTMF Trainer
3 X Tone / Pulse DTMF Telephone Sets
Ring Detection Phenomena
Trunk Relay Switching
Switching Mechanism of Relay
OFF Hook Detection
Working of the Flash and its use
Amplified Receiver Signal
Switching Mechanism of Relay
Ring Enable Signal
DTMF Receiver
Dialing of DTMF Digits
Frequency for Ring Generation
Ring Back Tone
Dial Tone and Busy Tone
Self Generated Ringing Signal
Frequency of Ringing Signal
Category: Telecommunication Technology Products
Telephone exchange is serving mankind for decades. It is one of the best combinations of Analog, Digital & Mechanical circuits. The EPABX has undergone many phase of changes ever since its existence. EPABX trainer forms the basis of Analog telephone exchanges. Automatic switching can be performed and studied using real time waveforms. The functional blocks provides easy understanding of the working of the system. Visualizations of the switching and detections are explained with the help of software. A DTMF Telephone Trainer is also provided for better understanding of Telephony signals.
Features:
Required Circuits Tested
Each Section Clearly Marked for Input and Output
Polarity Protection
Monolithic Switching Matrix
Monolithic DTMF Decoder
Monolithic Dialer, Ringer
Each Section Clearly Marked for Easy Understanding
Technical Features:
Inputs: 6 Trunk / Direct Lines
Extension: 16 Lines
Switching: Cross Point Space Division (Microcontroller based)
Standard Features: Dial Tone, Busy Tone, Ringer, Ring Back Tone, Music on Hold
Dialing: DTMF and Pulse
Loop Resistance: Extension -600 Ohms, Co-line- 1200 ohms.
Cross Talk Attenuation: >70 dBm.
Configurable Features: Direct Access to trunk line, Redial, Line Status Indication, Call Transfer, Call Pick Up, Direct Access Trunk, Call Forwarding, Call Conference, Hot line System etc
Interconnections: 2 mm safety pins
Accessories: Power cord, Experiment Manual, Software CD and 2mm patch cords, DTMF Trainer IT-4401, 3 x telephone sets