Definition of centrex in English:

centrex

Syllabification: cen·trex
Pronunciation: /ˈsenˌtreks
 
/
(also • trademark Centrex)

noun

  • A telephone service in which a group of phone lines can be joined by part of the local exchange acting as a private exchange.
    More example sentences
    • Service may be provided by commercial analog lines or via centrex (central Office exchange service, provided by a switch managed at the provider's central Office).
    • Hosted IP Centrex is designed for customers that want all the features of a PBX or Key system without the associated capital, lease, or maintenance costs.
    • IP Centrex and Hosted PBX services provide a valuable potential source of new revenue for service providers.

Origin

late 20th century: blend of central and exchange.

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