August 1999
Intermediate to advanced
328 pages
8h 50m
English
Content preview from Voice Over IP
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BYPASSING THE CIRCUIT-SWITCHED TECHNOLOGY TO REACH THE INTERNET
For several years, the telephone network will continue to operate with circuit-switched technologies, as explained in Chapter 1. In order to relieve the load on the telephone facilities, a number of vendors have built systems that are installed in the telephone local exchanges. These systems intercept calls destined for Internet or intranet users, and divert them to data facilities, thus avoiding the telco network and switches altogether. Figure 5-12 shows the general idea of circuit-switch bypass (CSB).
Figure 5-12. The circuit switch bypass
At the local exchange a special machine ...
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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.