Question

All local and long-distance connections are digital.

(a) True

(b) False

I had been asked this question in class test.

Asked question is from Pulse Code Modulation in portion Radio Transmitters, Communication Receivers, Multiplexing and Demultiplexing of Avionics

Answer 1

The correct answer is (a) True

To explain: All modern telephone systems use digital transmission via PCM and TDM. The only place where analog signals are still used is in the local loop—the connection between a telephone company’s central office (CO) and the subscriber’s telephone, known as the customer premises equipment (CPE). All local and long-distance connections are digital.