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Telephony
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Field of telecommunication services
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Telephony ( tÉ™-LEF-É™-nee) is the field of technology involving the development, application, and deployment of telecommunications services for the purpose of electronic transmission of voice, fax, or data, between distant parties. The history of telephony is intimately linked to the invention and development of the telephone.

Instance of
field of work
Industry (economics)
Subclass of
Communication
Telecommunications
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