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January 04, 2007: The emerging opportunity for VoIP security

Zeus Kerravala, vice president for enterprise infrastructure, Yankee Group
Zeus Kerravala manages Yankee Group's infrastructure research and consulting group. His areas of expertise involve working with customers to solve their business issues through the deployment of infrastructure technology solutions, including switching, routing, network management, voice solutions and VPNs. Kerravala has a B.S. degree in physics and mathematics from the University of Victoria (Canada), and is also certified by Citrix and NetScout.
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What is a webcast?

The term "Webcasting" is used to describe the ability to use the Web to deliver live or delayed versions of sound or video broadcasts. NetTalk Live! is an example of the former. They use an Internet site to deliver a RealAudio sound version of a live radio and television program at 11 pm (CST) each Sunday night. (They call this a triplecast.)

CNet and some other Web sites use the term "Webcast" to describe delayed or preview versions of movies, music videos, or regular radio and television broadcasts as a way to promote the live broadcasts. Each sample is known as a Webisode. Viewing Webcasts requires having an appropriate video viewing application such as the NetShow, RealVideo, or VXtreme streaming video players; these can usually be downloaded from any site offering a Webcast.

This definition was provided by our sister site Whatis.com.

This was first published in March 2007

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