What is the full form of PSTN?(a) Public Switched Telephone Network(b) Primary Switched Telephone Network(c) Private Switched Telephone Network(d) Protected Switched Telephone NetworkThis question was addressed to me in a national level competition.I want to ask this question from FM Stereo Multiplexing in portion Angle Modulation of Analog Communications

What is the full form of PSTN?(a) Public Switched Telephone Network(b)

1.	What is the full form of PSTN?(a) Public Switched Telephone Network(b) Primary Switched Telephone Network(c) Private Switched Telephone Network(d) Protected Switched Telephone NetworkThis question was addressed to me in a national level competition.I want to ask this question from FM Stereo Multiplexing in portion Angle Modulation of Analog Communications
Answer» Correct CHOICE is (a) Public Switched Telephone Network Explanation: PSTN stands for Public Switched Telephone Network. It is the aggregate of the WORLD’s circuit-switched telephone network. It helps in providing SERVICES for public TELECOMMUNICATION.

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