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Noun1.centrex - (CENTRal EXchange) a kind of telephone exchange
central, telephone exchange, exchange - a workplace that serves as a telecommunications facility where lines from telephones can be connected together to permit communication
References in periodicals archive ?
Central Telecom is targeting the SME segment of business users directly and the applications provided by this IP Centrex service are expected to secure additional market share and generate new revenue streams from recurring monthly rentals and voice minutes.
The project, which is expected to be one of the largest IP-Centrex deployments, will integrate with ISDN Centrex service provided to employees in the existing Lucent buildings in the Naperville and Lisle area.
For large institutions that want highly reliable voice and data communications without having to purchase or manage the accompanying hardware, BellSouth introduces a new Centrex service.
Although traditional Centrex service is appealing to a certain segment of customers, there are cost barriers and resource problems that are difficult to overcome.
While we had been using centrex service for more than a year,there wasn't enough detail provided in the bill I received to figure out who to charge for calls.
With the introduction of digital PBX systems in the 1970s, which offered dozens of features and capabilities analog centrex service could not provide, centrex demand leveled off and began to decline.

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