One of the milestones in the history of
However, in the early years of the 20th century, the need was seen to go a step further, which would improve the time it takes to establish a call, which was very long at that time as it was based on the manual operation of telephone operators who did the necessary interconnection work to complete the call between two customers. This also created significant efficiency issues and affected the privacy of communications.
To solve these problems, the first automatic exchanges were born around 1915 in the field of local calls of the exchange itself. Therefore, it was a shift from manual switching by humans to switching by electromechanical elements that were capable of making these interconnections autonomously without human intervention.
In the case of
This technical notebook describes the history of both
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