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
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Summary
In this chapter, you learned how to configure OpenSIPS to forward calls to a gateway. It is important to take care of the security. Using the permissions module, you can allow the gateways to bypass the digest authentication and get access by validating its IP address only. The group module is important to control the access from the UACs, and in order to route your calls to the PSTN gateways, the dynamic routing module is a very powerful and flexible tool. You should also prevent subscribers from sending a REFER method to the PSTN gateways to avoid fraud.
From the point you connect to PSTN, take a lot of care about toll fraud. I recommend that you have a security specialist verifying your environment periodically. Often, analyze your call ...
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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.