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Chapter 13. Expanding a LAN with WAN Tec... > Working with the Plain Old Telephone...

Working with the Plain Old Telephone System

The telephone system in this country has been around for more than a hundred years. And when you think about the actual physical infrastructure that makes up the POTS, you can see why it made sense and still makes sense to take advantage of the miles and miles of copper wire to connect computers at different sites.

The telephone system is a switched network. This means that as a connection is established on the telephone system’s network, it can be switched along different paths. For example, when you make a phone call, your voice communication does not necessarily always move along the same route, even though you dial the same phone number when you call a particular person.


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