Objective:
- To study the working principle of EPABX
- To study the DTMF circuit
- To study the cross point switching
- To control and operate the EPABX trainer kit
- To learn the principle, maintenance, troubleshooting, and repair of a telephone switching system
Materials required:
- Ohm EPABX demonstrator trainer system
- Telephone instruments
- C. R. O.
- D. M. M.
- Main subscriber’s telephone line
