Question

A public switching telephone network (PSTN) uses which switching technique?
1. Packet
2. Message
3. Circuit
4. None of these

Answer 1

Correct Answer - Option 3 : Circuit

The correct answer is Circuit.

• The full form of PSTN is “Public switched Telephone Network”.
• Public Switched Telephone Network is a Telecommunication network which is used for voice communication.
• PSTN is a circuit-switched network.
• It is a global telephony system comprised of public telephone networks.
• It is used to make a call, a communication channel is established between two points.
• In PSTN a unique Id called Telephone number is available for communication.