Switching in Telecommunication Network

Switching is used to establish a telecommunication network between two non-adjacent communication nodes. The information is relayed by one or more intermediate nodes that might use very different means of data transmission.

In 1969, President Richard Nixon called the Apollo 11 astronauts from the White House using a landline phone. Flat-Earthers regard the fact as ridiculous. According to them, if we cannot reliably make a phone call to the next room, then it must have been impossible for President Nixon to make a phone call to a location 384000 km away using a corded phone. Such allegation only stems from their lack of understanding of telecommunication.

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