July 2017
Intermediate to advanced
434 pages
12h 59m
English
Content preview from FreeSWITCH 1.8
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Channel Variables
Each individual channel (call) in FreeSWITCH has a number of associated characteristics and values, known as "channel variables".
You use variables to get informations about the channel internals and to control the channel behavior.
Some of channel variables are assigned from the inception of the channel. Some of them change value during the life of the channel. Some variables are read-only. Some channel variables are writable, this means we can alter their value. You can (and often do) create variables in a channel, via dialplan or scripting. Specific channel variables modify the behavior of the channel, and you can take control of it by writing ("set") a variable value.
There are an incredible number of channels variables ...
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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.