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Centrex is a portmanteau of central exchange, a kind of telephone exchange. It provides functions similar to a PBX, but is provisioned with equipment owned by, and located at, the telephone company premises. [1] Centrex service was first installed in the early 1960s in New York's financial district by New York Telephone.
Centrex Metals Limited is an Australian resources exploration and mining company. ... Subsequently, the company sold off its South Australian assets, dissolved its ...
Centrex Europe Energy and Gas AG is "an international group of companies operating in the natural gas sector, focussing on the extraction and marketing of natural gas reserves". It is believed to be a Gazprom front company.
Nord Stream AG (51%) - joint project company with E.ON, BASF and Gasunie for the contraction and operation of the Nord Stream 1 pipeline RosUkrEnergo AG (50%) - gas trading in Ukraine Shtokman Development AG (51%) - joint project company with Total S.A. (25%) and Statoil (24%) to develop Shtokman gas field first phase [ 10 ]
In telephony, line hunting (or hunt group) is the method of distributing phone calls from a single telephone number to a group of several phone lines. Specifically, it refers to the process or algorithm used to select which line will receive the call.
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Also taking advantage of the superior versatility of 5XB, Centrex was invented as a service package. Later stored program control exchanges allowed more extensive service features. Autovon originally used a four-wire version of 5XB, with a more complex marker to implement its nonhierarchical polygrid routing system.