In addition to the useful points suggested by Ayodeji (+5) , you can always check the release notes of any major cucm version, it has a section called 'new and Changed Information' or new features, the one for cucm 9.0.1 is given below
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...
If you have 2 ISR routers, one acting as Failover, do we need to have both the same number of SRST licenses on the 2 routers?
No. You will only need the SRST licenses on the primary router. Because this feature...