Hello Group<div><br></div>we plan the upgrade of our CUCM 8.0 to 9.1.2 this spring.<div>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.</div>
<div>However I have a cluster with 8 CUCM servers.</div><div>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)?</div>
<div><br></div><div>Thanks for help</div><div>Regards Reto</div>