PBX In selecting a telephone system, there are many considerations to be made. Among these considerations are the size, scope, features, functionality, interoperability, maintenance, reliability and upgradeability, all in addition to cost and vendor selection play major roles in determining which type of system will best fit the needs of the company. Interoperability with voice mail and electronic messaging systems, PC’s, LAN’s, video and multi-media servers and wireless systems are vital and important considerations going forward. Also important are the interfaces to Ethernet, coax or fiber used to access LAN’s, data equipment and local voice, wide area voice, and data network services; such as T-1, Frame relay, ISDN, and ATM. A PBX (private branch exchange) is a telephone system within an enterprise that switches calls between enterprise users on local lines while allowing an enterprise to share a certain number of external phone lines. The main purpose of a PBX is to save the......
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