Upgrade Overview for BGF VoIP Users

As a voice user, exercise caution in preparing for and executing a software upgrade. By doing so, you can ensure the proper handling of emergency calls and minimize overall disruption of service to customers. The following list describes how to prepare to upgrade a router used for voice processing.

• Back up—Back up your current configuration.
• Upload new software—In a dual RE configuration, upload the software to the backup RE.
• Redirect—Configure gateway controllers to redirect calls for all virtual BGFs on the device to virtual BGFs not subject to the upgrade. Refer to the documentation for your gateway controller for details.
• Perform a graceful shutdown of all virtual BGFs—Initiate a graceful shutdown for each virtual BGF to prevent initiation of new calls.

  For detailed information on how to perform a graceful shutdown, refer to Shutting Down a Virtual BGF.

• Check emergency calls—For each virtual BGF, confirm that no emergency calls are active.

  For detailed information on checking active calls, refer to Managing Emergency and Non-Emergency Call Traffic Prior to Upgrading.

• Check remaining active calls—For each virtual BGF, continue checking active calls until either none remain or you force the shutdown of the virtual BGF to terminate remaining non-emergency calls.
• Upgrade—Refer to the JUNOS Software Installation and Upgrade Guide for detailed upgrade instructions.