October 2014
Intermediate to advanced
382 pages
8h 27m
English
Content preview from WebRTC Integrator's GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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The challenges in connecting the WebRTC world to the PSTN landscape
There are many big/small problems that arise or may arise when interconnecting the different networks of WebSocket, SIP, and PSTN. The most basic aspects of address mapping and protocol conversion from SIP to ISUP are mentioned here. Other challenges, such as policy control, billing, charging, and so on, are left to the reader to implement as they wish.
Address mapping
The PSTN scenario is much different from VoIP, as in the PSTN, the user ID is in the numeric form, while in VoIP networks, the username is followed by @domain name. To resolve the intermapping between both the worlds, DNS and Enum servers are used; this setup is depicted in the following diagram:
Translation from SIP ...
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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.
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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.