Before performing any server upgrades:

• You must obtain and check all relevant release notes and documentation prior to any upgrade.

• Ensure that you have backed up the server before performing the upgrade. See Backup and Restore.

• Some upgrades require a new set of licenses, typically when upgrading to another major release rather than to a service pack or feature pack within the current release. Obtain and install the new license file before upgrading. A license file for a higher release will still allow the existing release to continue operating.

• If the server is part of a network of IP Office servers:

  • The primary server must be upgraded first.

  • Once the primary server has been upgraded, any other servers can be upgraded individually or simultaneously.

• Upgrading will cause service disruption and end calls in progress. If possible it should be performed outside normal business hours. Using ISO transfer and upgrade through web manager is recommended as that method allows for scheduled upgrading if required.