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2. COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW
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A network is an interconnected group of communications systems that can exchange voice and data across
the transmission media that connect them. Arranging communications systems into networks involves
physically linking the systems (nodes) together with the appropriate hardware. In addition, it involves
installing and administering the networking software.
Chapter 1 of this manual tells you about the hardware that you can use to physically link communications
systems with each other. This chapter provides an overview of the software that you must activate and
administer for network communication.
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