June 2004
Intermediate to advanced
408 pages
12h 6m
English
book
THE ROAD TO IP TELEPHONY: HOW CISCO SYSTEMS MIGRATED FROM PBX TO IP TELEPHONY
by Stephanie L. Carhee
Content preview from THE ROAD TO IP TELEPHONY: HOW CISCO SYSTEMS MIGRATED FROM PBX TO IP TELEPHONY
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Chapter 4: Implementation
(161)
Power, Rack Space, and Ordering Circuits
Because Cisco implemented a large IP Telephony deployment, an important component of
the migration was to ensure adequate rack space to fit all the servers that would be needed
and adequate power requirements to keep them running. After Cisco verified or adjusted
that to meet the requirements of the new converged network, the implementation
progressed smoothly, and Cisco also gained the flexibility to scale in the future.
“We walked every building [and] entered each BDF or the locations chosen to house the
FXS switches and the DPAs [Digital PBX Adapters] to make sure there was ...
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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.