Public switched telephone network Archives - VoIP Bible

Women who worked at manual telephone exchanges became known as "hello girls."

July 25, 2021August 1, 2021inCommunication, Telecommunication, Theory

Telephone exchange

Overview of Public switched telephone network or PSTN

July 14, 2021July 21, 2021inCommunication, Telecommunication, Theory, Voice over IP

Public switched telephone network or PSTN