Other terms and concepts related to networks and communications are to be found in Section A11 Internet, Section B5 Communications components and Section D3 Communications technology.

Connecting pieces of communications and information equipment together in a network is not a new concept. The early telegraph systems, especially in the USA where the distances are so great, provided the stimulus for telegram services and the later development of telex communications, in which text information could be sent between any telex machines on the worldwide telex network using telephone lines. Passing messages internationally has been possible ever since the development of international cable links, which began in the 19th century. For ...

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