This document describes the Avaya Call Management System (CMS) base load upgrade process. The primary audience includes system administrators and implementation engineers involved in upgrade processes.

The base load upgrade process is typically used for upgrades within a release. For example, you can perform a base load upgrade if you are experiencing problems with your current CMS release or to access new features within the release. Before performing the upgrade, ensure that you have downloaded the correct software ISO image for the new release.