Sistema de gerenciamento telefônico empresarial

Abstract

This paper presents the development of a digital PBX with USB modems that aims at reducing costs for the company to use. This PBX features ease of expansion, a wide variety of configuration options in addition to certain discretion in the same. Were used current technologies of low cost and Ubuntu operating system, which allows the PBX is implemented in any company. Requires basic hardware and broadband internet for external communications. Were used VoIP communications, transmission protocols, number portability, implementation of GSM gateways through USB modems and features of analogue exchanges with installation times and reduced maintenance.