Hello
I have CUCM 8.5.1.10000-26, and I need to install ip phone 7821, but I don't have the device to add it to Call Manager.
mi question is What is the release 8.5.1 that I have to update to get this ip phone in the devices.
and where in www.cisco.com can I found the compatibility matrix for 8.5.1 with IP Phones
thank you very much for your help
