September 2006
Intermediate to advanced
504 pages
11h 49m
English
Content preview from Authorized Self-Study Guide Cisco Voice over IP (CVoice)Become 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 Need for Signaling and Call Control
Signaling and call control are fundamental to the call establishment, management, and administration of voice communication in an IP network. This section discusses the benefits of using signaling and call control and offers an overview of what signaling and call control services provide.
VoIP Signaling
In the traditional telephony network, a voice call consists of two paths:
An audio path carrying the voice
A signaling path carrying administrative information such as call setup, teardown messages, call status, and call-progress signals.
ISDN D-channel signaling and Common Channel Signaling System 7 (CCSS7) or Signaling System 7 (SS7) are examples of signaling systems that are used in traditional telephony. ...
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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.