Question

What is a private branch exchange (PBX), and what is its function? 

   What is a private branch exchange (PBX), and what is its function?
Electronic Communications: A Systems Approach
Electronic Communications: A Systems Approach
Jeffrey S. Beasley 1st Edition
Chapter 9, Problem 5 ↓

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A Private Branch Exchange (PBX) is a private telephone network used within an organization. It allows internal communication between users and manages external phone calls to and from the public telephone network.  Show more…

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