Cisco Cisco IP Contact Center Release 4.6.2 Installation Guide

It is important to note that the Campaign Manager for Outbound Option is not backwards
compatible with older versions of the Dialer. The ICM/IPCC Release 7.2(1) Campaign Manager
has the backward compatibility support for Dialers that are Release 7.0(0) SR4 ES56 and up
and Dialers that are Release 7.1(3) and up.

For all other environments, the maintenance window must be extended to allow all components
(server and desktops) to be upgraded at the same time.

A typical upgrade strategy is to upgrade the Central Controller components during one
maintenance window, and then go back and upgrade PG's during later subsequent maintenance
windows. With the Campaign Manager and Dialer not being backwards compatible, it prevents
the use of that strategy.

A second upgrade strategy is to upgrade the "A" side of a solution during the first maintenance
window, and then go back and upgrade the "B" side during a subsequent maintenance window.
This does not work either for the following reasons:

1. The Campaign Manager is not redundant. When it is down, customers have no ability to

do outbound campaigns.

2. Dialers are installed on both sides of the PG. There is no concept of an "Idle" dialer. When

one side of a PG is taken down for an upgrade, you effectively lose 50% of their ability
to perform Outbound campaigns.

The end result is that customers must upgrade all of the devices in their environment
simultaneously. The maintenance window must be extended to accommodate the upgrading of
all the devices.

Release Strategy

Cisco ICM/IPCC Enterprise & Hosted Editions, Release 7.2(1) is a minor release. A minor
release is an incremental set of software fixes and a limited set of new functionality delivered
in an automated installer. All published maintenance release content present at the point of the
minor release ship date is contained within the minor release. The only exception is where a
minor release development/testing schedule overlaps with that of a maintenance release.
Engineering specials released prior to the code freeze date are also part of the minor release
content.

For additional information on the Cisco software support methodology, refer to: 

 (http://www.cisco.com/en/US/customer/products/sw/voicesw/

tsd_products_support_category_home.html).

For an explanation of the specifications for a full ICM/IPCC Enterprise & Hosted Editions,
Release 7.0(0) upgrade, refer to the 

 (http://www.cisco.com/en/US/products/

sw/custcosw/ps1001/products_user_guide_list.html) for that release.

Installation Guide Cisco ICM/IPCC Enterprise & Hosted Editions Release 7.2(1)