Centrex system

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• Centrex — (von Central Office Exchange) stellt die Funktionen einer Telefonanlage für Privatpersonen oder Unternehmen mit Hilfe von Elementen eines öffentlichen Telekommunikationsnetzes (zum Beispiel ISDN) bereit. Als synonyme Bezeichnungen haben sich die… …   Deutsch Wikipedia

• Centrex — [sen′treks΄] n. 〚 CENTR(AL) + EX(CHANGE)〛 a telephone system for businesses, large organizations, etc. in which outside calls can be made directly to, or from, any extension * * * …   Universalium

• Centrex — [sen′treks΄] n. [ CENTR(AL) + EX(CHANGE)] a telephone system for businesses, large organizations, etc. in which outside calls can be made directly to, or from, any extension …   English World dictionary

• Centrex — This article is about the type of telephone exchange. For the British police training agency, see Centrex (police training agency). For the Gazprom related group of companies, see Centrex Europe Energy Gas AG. Typical standard phone used with… …   Wikipedia

• Business telephone system — Early model 464G Western Electric key telephone set A business telephone system is any of a range of a multiline telephone systems typically used in business environments, encompassing systems ranging from small key systems to large scale private …   Wikipedia

• IP-Centrex — bezeichnet die Übernahme des Prinzips von Centrex in Voice over IP und bedeutet die Bereitstellung der Funktionen einer Telefonanlage durch einen Provider im öffentlichen Netz. Inhaltsverzeichnis 1 Wirkungsweise 2 Vor und Nachteile 3 Entwicklung …   Deutsch Wikipedia

• Number Five Crossbar Switching System — The Number Five Crossbar Switching System or 5XB switch, designed by Bell Labs and made by Western Electric, was in use in Bell System telephone exchanges from 1948 to the 1980s. Its principal use was as a Class 5 telephone switch, though… …   Wikipedia

• Extension — may refer to: * Extension (kinesiology), a movement of a joint in which one part of the body is moved away from another. * Extension (metaphysics), the property of taking up space * Extension (semantics), the set of things to which a property… …   Wikipedia

• Extension (telephone) — An extension telephone is an additional telephone wired to the same telephone line as another. In middle 20th century telephone jargon, the first telephone on a line was a Main Station and subsequent ones Extensions . Such extension phones allow… …   Wikipedia

• Private branch exchange — A private branch exchange (PBX) is a telephone exchange that serves a particular business or office, as opposed to one that a common carrier or telephone company operates for many businesses or for the general public. PBXs are also referred to as …   Wikipedia

• Scott A. Jones — (born in 1960) is an American inventor and serial entrepreneur. He is most widely known for inventing voicemail systems. NOTOC Early lifeAfter graduating from North Central High School in Indianapolis in 1978 with nearly two years worth of… …   Wikipedia