December 2005
Beginner
326 pages
8h 23m
English
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Preface
Voice over IP, or VoIP, is a family of technologies that enables voice applications and telephony to be carried over an Internet Protocol (IP) network such as the Internet. These technologies include protocols, hardware and software standards, and computer programs. VoIP is employed in telephony applications, from analog phones to next-generation IP phones and wireless headsets, and in desktop voice chat services, from web-based party-line chat services (like Yahoo! Chat) to the well-known Skype desktop voice-calling service.
VoIP has become an important technology that is integrating pervasively into the popular culture. It is employed daily to drive new engines of commerce—everything from business-class VoIP-powered calling services to simple desktop chat tools such as Apple’s iChat. Other high-profile companies like eBay, Microsoft, Google, and AT&T offer applications and services that utilize VoIP, too.
These big companies have recognized that the popular culture is moving to VoIP services en masse, even as the telecom industry is being set on its ear by scrappy young VoIP startups like Vonage, Packet8, and SpeakEasy.net. VoIP services deliver telephony applications less expensively than the old phone companies can hope to. This is because VoIP is free of the continually burdensome legacy technology investment the old phone companies must make to keep the “old” global phone network running. VoIP is also free of the endless government regulations and tariffs imposed upon ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.