IP Telephony Multisite Centralized
Call Processing Solutions
In centralized solutions, CallManager and all of the related VoIP resources are
located on the main corporate backbone networks, or at some other primary
location.These VoIP resources are any device or function that provide core VoIP
functions for everyone else, and which usually have the highest capital cost.This
is usually a data center or some other highly protected location that uses conditioned
power, redundant WAN connections, and physical security such as personnel
badges and magnetic entry cards. Because of this seemingly precarious
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position, all infrastructure supporting this configuration must be of the highest
quality, and utilize the most redundant design possible.
A centralized call processing solution is arguably the configuration most often
found in enterprise VoIP solutions.This section will show you how to design
such a solution, plan for WAN changes to support branch offices from a centralized
solution, and how to provide backup and disaster recovery solutions that will
help recover failed installations