Need to upgrade existing cucm cluster running with software version 5.1(3g) to 6.1(4a).
We got dvd from cisco but unable to upgrade from dvd.
Can any one provide exact name of the file required to upgrade version from 5.1(3g) to 6.1(4a)
We have below mentioned hardware in our cluster.
MCS7825 I2-K9-CMA2 & MCS7825 I3-K9-CMA2