Chapter Summary

The following list summarizes the key points that were discussed in this chapter:

■ Direct upgrades from Versions 3.x, 4.0(2), and 5.0(1) to 6.x are not supported.

■ CUCM Basic installation can be performed from a bootable DVD or factory preinstalled systems.

■ Using the Upgrade During Install option saves time when applying service release updates.

■ The CUCM administrator user ID can be freely chosen. The account CCMAdministrator is no longer mandatory.

■ Upgrades from Version 5.x to 6.x can be done via a Cisco Unified Operating System Administration software upgrade.

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