1. TUGASAN 1 E3125 – COMMUNICATION SYSTEM
1. Explain the need of switching in a telephone system.
(5 marks)
2. State the bandwidth frequencies used to operate the telephone service.
(2 marks)
3. With the help of a drawn figure, give a brief explanation of the workings of DTMF.
(5 marks)
4. Draw and label a figure that shows a matrix switching system.
(5 marks)
5. Sketch, label and describe in short a block figure that illustrates the Stored Program
Control switching system.
(10 marks)
6. Public Switching Telephone Network (PSTN) is actually a combination of a few voice
oriented network. Describe only four (4) main devices in a PSTN switching network.
(10 marks)
7. List TWO (2) deficiencies in SPC (Stored Program Control).
(2 marks)