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06.23.05 » Understanding Data Networks: LAN, WAN, VPN
Local Area vs Wide Area Network We can classify IP data network technologies as belonging to one of two basic groups: Local Area Networks (LANs) or Wide Area Networks (WANs). A LAN connects many devices that are relatively close to...More...
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06.23.05 » Understanding Data Networks: IP, Packet Switching, Routers
Data Networks The Internet Protocol (IP) was designed specifically for the Internet to act as the first truly universal networking language. It is the method or protocol by which data is sent from one computer to another via the Internet...More...
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06.23.05 » Understanding Voice Networks - PSTN, PBX, Key Systems
Public Switched Telephone Network (PSTN) For years now, people have relied on the Public Switched Telephone Network (PSTN), otherwise known as POTS (Plain Old Telephone Service), for voice communication. Although the PSTN is a very reliable network, it uses a...More...