
Working with service packs
Service packs are required to update the Avaya IR system with the most current software available. 
Service packs are numbered in ascending order and each subsequent service pack contains the contents of all previous service packs. Also, each software release of the system contains the service packs from the previous software release. For example, release 2.0 contains all the service packs for release 1.0.
You need to install service packs in the following situations:
- After a system arrives from Avaya that does not have the service pack pre-installed.
 - After a system has been installed from CD.
 - After a system has been recovered using a full-backup image that did not have the service pack installed.
 - After new features have been added and activated on a system. This is necessary to ensure service pack materials for the newly activated feature get installed, since the service pack package does not install fixes for features that are not present on the system.
 
In all of these situations, the basic process of working with service packs is
- Determining the software release
 - Verifying the service pack
 - Obtaining service packs
 - Installing service packs