The answer is telecommunications.
What is Telecommunication?
Telecommunication is the transmission of information by various types of technologies over the wire, radio, optical, or other electromagnetic systems.
What is the purpose of telecommunication?
The purpose of a telecommunication system is to exchange information among users of the system. This information exchange can take place in a variety of ways, for example, multiparty voice communications, television, electronic mail, and electronic message exchange.
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