Home » Our Product » Communication Equipment » EPABX Trainer

EPABX Trainer Manufacturer,Supplier and Exporter in India

Product Code : SCL-CE-12650

Indian Lab Suppliers supplies the EPABX Trainer (Product ID: 12650), part of the Communication Equipment range under Laboratory equipment, a microprocessor-based telephone exchange trainer with all components mounted in functional blocks on a single PCB and test points to monitor telephonic signals.

Note on naming and scope: this listing shares the exact name "EPABX Trainer" with our earlier EPABX Trainer (Product ID 12600), which is a different design built around an ST2657 Automatic Telephone Exchange chipset with a Cross Point Space Division architecture (2 trunk/direct lines, 4 extensions) and a bundled DTMF Telephone Trainer. This product (12650) is a separate, 89E516RD microcontroller-based stored-program-control design with 72KB program memory, its own subscriber/extension configuration, and 46 test points. Please confirm the exact model with our team before ordering.

Note: a few figures in the source specification are unclear or run together — the Insertion Loss and Dial Pulse Ratio entries appear jumbled in the original documentation ("Extension to DOT Line not Dial Pulse Ratio Less than 60 dBm : 10pps ±10%"), and the Power Requirement is listed as 11V, 23V, 5V, 15V, which is not a standard symmetric rail pattern. These are presented below exactly as documented; please verify the exact figures with our engineering team before ordering.

Quick Answer

This is a microcontroller-based EPABX (telephone exchange) trainer that lays out subscriber lines, extension lines, tone generation and switching circuitry in functional blocks on a single PCB, with 46 test points and 8 switch-selectable faults so students can study telephone exchange operation and practise fault-finding.

Key Features

Microprocessor-based system for understanding the basic concept and working of a telephone exchange · All components mounted on a single PCB in functional blocks · 89E516RD microcontroller-based stored program control · Opto-isolation for trunk lines and extension lines · Tone generation for dial tone, busy tone, ring-back tone, hold-on music and more · 46 test points to monitor telephonic signals · 8 switch-selectable faults for studying circuit effects

Key Specifications

Parameter	Detail
No. of Subscribers	Two DOT lines, four-line section extensions
Extension Lines	Opto-isolation for trunk lines and 4 extension lines
Tone Generation	Dial tone, busy tone, ring-back tone, hold-on music, etc.
CPU Section	89E516RD microcontroller-based stored program control
Memory	72KB program memory, speech path 1KB RAM, fully non-blocking
Loop Resistance (Extension)	600 Ohms
CO-Line Resistance	1200 Ohms
Cross Talk Attenuation	>70 dBm (as documented)
Idle Channel Noise/Voice	>70 dBm (as documented)
Insertion Loss	Extension-to-extension not less than 60 dBm; extension-to-DOT-line figure unclear in source (see note above)
Dial Pulse Ratio	10pps ±10% (position unclear in source, see note above)
Input Power	230V AC, 50Hz
Longitudinal Balance	60 dBm (as documented)
Switch Faults	8 switch-selectable faults on board
Test Points	46 nos.
Power Requirement	11V, 23V, 5V, 15V (as documented, see note above)

Where This Is Used

This trainer is used in electronics and telecommunication engineering labs to teach EPABX/telephone exchange operation and fault diagnosis; see also our Electronics Lab Equipment and Engineering Lab Equipment ranges.

Why Buy from Indian Lab Suppliers

Indian Lab Suppliers is an India-based laboratory equipment manufacturer and exporter supplying this EPABX Trainer alongside its broader Communication Equipment catalog, with documentation such as a Certificate of Origin available on request for institutional and export orders.

Frequently Asked Questions

What does the EPABX Trainer (Product ID 12650) teach?
It teaches the working of a telephone exchange (EPABX) using a microcontroller-based system with subscriber lines, extension lines, tone generation and switching laid out in functional blocks with 46 test points.

Is this the same as your other EPABX Trainer listing?
No. It shares its name with Product ID 12600 but is a different, 89E516RD microcontroller-based design with its own specifications — please confirm the exact model with our team before ordering.

How many faults can be introduced for practice?
The board provides 8 switch-selectable faults so students can study their effects on the circuit and practise fault-finding.

Related Categories

Laboratory · Electronics Lab Equipment · Engineering Lab Equipment

Request a Quote

For pricing, bulk quantities or tender documentation on the EPABX Trainer, reach our team via Contact Us or submit your requirement through our Tenders page.