Global Private Branch Exchange Market 2017: Potential Growth, Share, Demand and Analysis of Key Players Analysis, Development Trends, Market Supply and Forecast to 2022
A PBX (private branch exchange) is a telephone system within an enterprise that switches calls between enterprise users on local lines while allowing all users to share a certain number of external phone lines. The main purpose of a PBX is to save the cost of requiring a line for each user to the telephone company's central office.
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