August 2006
Intermediate to advanced
648 pages
15h 51m
English
Content preview from Cisco Voice Gateways and GatekeepersBecome 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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Chapter 13. SRST and MGCP Gateway Fallback
One of the primary benefits of a centralized call processing model is the ability to provide remote sites with all the advanced calling features that were previously available only on large campuses. Survivable Remote Site Telephony (SRST) allows a Cisco voice gateway to handle call processing if the connection between the remote site and the central site is severed.
H.323 and Session Initiation Protocol (SIP) gateways are intrinsically resilient to network connectivity failures because the dial plan and call control are in the gateway, and the gateway is always in control of call-routing decisions. Multiple Gateway Control Protocol (MGCP) gateways are under the control of the call agent, and only the ...
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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.