EPABX TRAINER is the most advanced Telephone Exchange Tutor. It is basically designed to help the students to understand the basic concept and working of a Telephone Exchange (EPABX). This is a totally working model and can be used as an actual EPABX too.
EPABX-2000 is designed using Z80 Microprocessor. The system comes along with all the accessories to perform various experiments. All the components are mounted on a single PCB in functional blocks and have various Test points to monitor all kinds of telephonic signals. Exhaustive manuals are provided along with the system, which provides detailed experimental procedure and complete circuit diagram explanation of the system.

FEATURES:
Non-Blocking type tone dialling, Distinctive Ringing, Central operator control station with LCD display, DTMF/ Pulse Dialing, Music on hold, Line Status Indication on the Exchange, Executive Telephone with special features, Control methods, Abbreviated Dialing, Automatic Call Back, Barge-in-with/ without tone, Call camp-on, Call Parking, Call Pick-up, Call Restriction, Call transfer, Call Forwarding, Follow me, Conference 4-Party, Direct outward dialing, Do not Disturb, Extension Privacy, Extension to Extension Call, Hotline on Extension, Hunting Group, Last Number Redial, Selective Trunk Line Access, Simultaneous Ringing, Wake up Alarm/ Reminder Call.

LIST OF EXPERIMENTS:
• Study of Speech Circuit using IC and it’s interface to the line.
• Study of DTMF and Pulse Dialing circuit using IC and it’s interface to the line.
• Study of Dual tone ring generator circuit using IC and it’s interface to the line.
• Study of design of subscriber line.
• Study of interfacing circuit between subscriber line and switching digital circuitry.
• Study of ring generator circuit and it’s interface.
• Study of Tone Generation.
• Study of switching mechanism between Subscriber.
• Study of switching mechanism between Trunk and Subscriber.
• Incoming call
• Outgoing call
• Study of three party conferencing.
• Study of call transfer mechanism.
• Study of console programming.