November 2014
Intermediate to advanced
220 pages
6h 54m
English
Content preview from Securing VoIP
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Technical editor biography
Tom Ring is currently employed by IQ Services, a Minneapolis-based company that provides performance load testing and availability monitoring services for Fortune 500 contact centers. He holds a dual position at the firm, serving both as the Lead Sales Engineer and as its Security Manager.
Mr. Ring has been employed in the telecommunications industry for over 30 years. His positions have included: Senior Systems Administrator at Pixius Communications, Support Engineer at Harmonic Systems, Level 3 Engineer/Programmer at Norstan Communications, Field Support Engineer at Ericsson Development, and National MD110 Field Engineer for Honeywell Communications Services Division.
While he rarely takes his Engineer’s cap off, ...
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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.