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VoIP
Mira la nota http://www.servervoip.com/blog/que-es-una-centralita-ip/
Que es una centralita IP
Según Quarea (2013) una Centralita Telefónica (o PBX para Private Branch Exchange y PABX para Private Automatic Branch Exchange en inglés) es un equipo privado que permite gestionar llamadas telefónicas internas en una empresa, y compartir las líneas de acceso a la red pública entre varios usuar...
