We cannot utilize all the buttons on the Sidecars (7915 & 7916) to their maximum capacity due to the 42 buttons limitation on Callmanager.
We are using 7962.
IS this something that can be fixed by installing a device pack/patch?
If not, does anyone know the earliest CUCM version on which it is fixed ?
On CUCM 7.1.2, i found that it supports 54 buttons for 7962.