January 2016
Intermediate to advanced
384 pages
8h 6m
English
book
Building Telephony Systems with OpenSIPS - Second Edition
by Flavio E. Goncalves, Flavio E Goncalves, Bogdan-Andrei Iancu
Content preview from Building Telephony Systems with OpenSIPS - Second Edition
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Understanding the solution flow
Here, we will describe the solution request by request and instruction by instruction. Pay attention to the request number and the corresponding process on the script.
Note the following request and reply numbers. We will show the relevant requests only. Pay special attention to the IP present on the headers, Via, Contact, and the c= line of the SDP header. These are the fields modified by the NAT algorithms. Check the Contact header of the INVITE relayed (2) for the presence of nat=yes in the Contact header as well. In the ACK, pay close attention to the nat=yes parameter, now in the Request-URI. ACK is a sequential ...
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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.