closed PBX
[/kloʊzd ˈpiː biː ˈɛks/]
nounpl: closed PBXs
PABX fechado
1. A private branch exchange (PBX) system that restricts outgoing calls to authorized users only and prevents external parties from accessing the internal telephone network
The company implemented a closed PBX system to control long-distance calling and prevent unauthorized external access.
A empresa implementou um sistema de PABX fechado para controlar chamadas de longa distância e prevenir acesso não autorizado.
2. A telephone switching system for private organizations where internal extension dialing is available, but external line access is limited or monitored
With a closed PBX, employees can transfer calls internally but cannot make external calls without proper authorization codes.
Com um PABX fechado, os funcionários podem transferir chamadas internamente, mas não podem fazer chamadas externas sem códigos de autorização adequados.
The term 'closed PBX' is primarily used in telecommunications and IT contexts in both the United States and Brazil. It reflects corporate security practices implemented to control telecommunications costs and maintain confidentiality. In Brazil, PABX systems are widely used in business environments, and the closed/open distinction is important for IT professionals and telecommunications managers. This terminology became more relevant with the expansion of corporate telephone systems in the 1980s-2000s.
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