It depends on what CUCM you running whether it is restricted or unrestricted, you can find it with the help of below link. If CUCM is installed as restricted then you must go for restricted version (UCSInstall_UCOS_184.108.40.206901-1.sgn.iso) only.
If you plan well, then it is not a difficult activity its like device pack installation just you need to switch the version after new iso installation and you dont need to reconfigure anything except frimware; if you dont want to update the firmwares then you can revert back the firmware names in device default.
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...
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