March 2004
Intermediate to advanced
360 pages
8h 54m
English
Content preview from POWER UP YOUR SMALL-MEDIUM BUSINESS: A GUIDE TO ENABLING NETWORK TECHNOLOGIES
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Chapter 8: IP Telephony and Multimedia Communications
(173)
Centrex
Centrex is a switching service that provides companies with telephone lines
that have capabilities similar to those offered on a PBX or key telephone system.
Unlike a PBX or KTS, however, Centrex does not depend on call-processing
equipment being located on the customer premises. Instead, equipment is housed
at a service provider’s local point of presence, and companies subscribe to a
service. Centrex differs from basic business lines in that it typically has an average
of 100 built-in features. It can be grouped with other Centrex lines for delivery to
a small-medium business site. ...
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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.