Hello Group we plan the upgrade of our CUCM 8.0 to 9.1.2 this spring. Now I want to test the new IP Phone firmware on a few phones. I found a cisco document (Upgrade IP Phone Firmware Individually Doc ID: 108090) that describes the steps. However I have a cluster with 8 CUCM servers. Do I have to install the IP Phone load upgrade patch file (cmterm-7940-7960-sccp.8-1-2SR2.cop.sgn) on every server or just on the publisher / tftp (are on the same server installed)?
Thanks for help Regards Reto
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