telephony
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telephony
The technology, system, or field that deals with transmitting speech over a distance. It includes all aspects of making phone calls.
Durch die Internettelefonie sind Anrufe ins Ausland viel günstiger geworden.
Thanks to internet telephony, calls abroad have become much cheaper.
The word is made up of 'Telefon' (telephone) and the ending '-ie'. The ending '-ie' often refers to a field, a discipline, or a technology, as in 'Chemie' (chemistry) or 'Biologie' (biology).
Die Geschichte der Telefonie begann im 19. Jahrhundert.
The history of telephony began in the 19th century.
'Telefonie' (telephony) is a rather formal or technical term. In normal everyday language, people usually simply talk about 'Telefonieren' (making phone calls).
Der Experte hält einen Vortrag über die Sicherheit in der modernen Telefonie.
The expert is giving a lecture on security in modern telephony.
The word is often combined with adjectives or other nouns to describe a specific type of technology, e.g. 'mobile Telefonie' (mobile telephony), 'Internet-Telefonie' (internet telephony), or 'IP-Telefonie' (IP telephony).
Viele Unternehmen stellen ihre Kommunikation auf IP-Telefonie um.
Many companies are switching their communication to IP telephony.
telecommunications
'die Telekommunikation' and 'die Telefonie' both describe technical communication over a distance. 'Telekommunikation' is the broader term: it includes telephone, internet, radio, and other electronic means. 'Telefonie' is narrower and refers especially to transmitting speech when making phone calls. The words can be confused because making phone calls is part of telecommunications. When talking generally about networks and electronic communication, you would usually say 'Telekommunikation'. When talking specifically about phone calls or telephone systems, 'Telefonie' is more precise.
In der Pause erklärt der Techniker, wie die Telefonie über das Internet funktioniert.
During the break, the technician explains how telephony over the internet works.
Ohne Telekommunikation könnten viele Firmen nicht mit Kunden in anderen Ländern arbeiten.
Without telecommunications, many companies would not be able to work with customers in other countries.