5   IP—The Internet Protocol

The Internet is not just one thing, it's a collection of things—of numerous communications networks that all speak the same digital language.

—Jim Clark

IP is the most successful computer networking technology ever invented. A recent count shows almost 440 million host computers connected directly to the Internet.1 Every new desktop or laptop computer produced today comes equipped with a networking connection that supports IP.

With a basic understanding of IP networking, our discussions about IP video will be much more valuable to you. It is not at all unusual for special network designs to be required in order to transport IPTV reliably. In this chapter, we will discuss the basics of IP transport, explain the key ...

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