This configuration guide assumes that you have already followed the main setup guide and have the softphone installed and working with your voip line.

STEP 1
Click the arrow found on the right hand side of the phone to display the advanced options menu.

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to minimize downtime and operational complexity. The Full Upgrade method consumes less time, retains roles, and provides better fault tolerance than the traditional Split Upgrade approach.

It is important to note that the Cisco documentation for upgrading from ISE 2.7 to 3.1 specifically uses ISE version 2.7 patch 4 as a baseline. Ensure your deployment meets the minimum patch level before attempting a major version upgrade. cisco ise 27 download upd

Log in to the Cisco ISE Primary Administration Node (PAN) admin portal. Navigate to Administration > System > Upgrade . to minimize downtime and operational complexity

Go to . Click Install .

: Each node will reboot after a patch installation. Plan for system downtime accordingly. cisco ise 27 download upd

A successful ISE upgrade requires rigorous pre-upgrade validation to prevent network downtime.