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Introduction To Codecs And VoIP VoIP stands for Voice over Internet Protocol. It is the science behind transmitting audio over the Internet in the form of data Packets. During VoIP’S inception, people were concerned about the quality of Audio being transmitted over the Internet. Since its development, VoIP and audio Codecs have improved greatly. To get the most out of your VoIP connection you will need to take the time and effort to keep your computer up to date. If your computer is running on a slow processor or a very old operating system, your computer may not be equipped to handle VoIP or produce the highest audio quality. What You Should Know About VoIP VoIP is Voice over Internet Protocol. Standard telephone lines are referred to as PSTN or the Public Switched Telephone Network. PSTN works on circuit switching. A good example of circuit switching is the old switchboard operator who would connect callers to receivers by the use of electrical circuits. VoIP is Packet Switching. Packet Switching consists of data packets, or packets of information being carried across the Internet, from your computer to either another computer or PSTN telephone.