Trivia: What device did telephone operators use to connect subscribers?
Telegraph
Switchboard
Transistor circuit
Computer
The correct answer is Switchboard
So why is this answer correct? : For most of the telephone’s history, calls couldn’t be placed directly between two people. Instead, an intermediary known as an operator used a switchboard to connect two phone subscribers. Before the introduction of technology that circumvented the need for operators arrived in the 1930s, some 235,000 people, mostly women, worked as telephone operators in the U.S.