Cisco Cisco Unified Customer Voice Portal 11.0(1) Installation Guide

Planning Your CVP Upgrade

This section provides an overview of upgrade considerations and strategies that can be used to
perform a CVP upgrade.

This chapter contains the following topics:

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CVP Upgrade Strategies

Typically, there is a limited maintenance window in which to perform an upgrade. When there
are a large number of CVP servers, it may not be possible for you to upgrade all of the servers
in one maintenance window. CVP 7.0 introduces new upgrade strategies that will help large
CVP deployments segment the upgrade process. Using the concepts of CVP units and multiphased
upgrades you can divide the server upgrades into multiple steps that can be completed over
many maintenance windows.

CVP Units

Some Unified CVP deployments are logically divided so that call paths only traverse sub-sets
of CVP servers. These logical groupings of servers are referred to as a CVP unit. A CVP unit
is comprised of all of the VXML Servers, Call Servers, and Reporting Servers that can be
involved in processing a call. This includes failover machines as well as other CVP units that
a VXML gateway could transfer the call to, as well as any VXML Servers that house VoiceXML
applications called by Subroutine elements.

CVP Deployments that have multiple CVP units can upgrade one unit at a time. This strategy
can be very useful if a call center is migrating from H.323 to SIP and needs to continue call
processing and minimize the risks. The CVP unit must remain offline until all components in
the unit are upgraded.

Installation and Upgrade Guide for Cisco Unified Customer Voice Portal Release 7.0(2)