July 2017
Intermediate to advanced
434 pages
12h 59m
English
Content preview from FreeSWITCH 1.8
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Choosing between encryption options
There are some encryption options available for FreeSWITCH. You can encrypt the signaling (that is, the SIP messages), the media (that is, the audio in the RTP stream), or both.
TLS (Transport Layer Security) encrypts everything over the TCP connection; this has the downside that jitter or delays due to TCP can occur. UDP is generally preferred for RTP and using TLSV1 has some additional traffic overhead.
ZRTP has the advantage that it allows for end-to-end encryption without pre-exchanging keys or certificates but is a bit more complex to set up, especially for some clients. ZRTP is a protocol that was co-designed by Phil Zimmermann, the same individual who created PGP encryption. More information can ...
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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.