We are running CUCM version 9.1.2.  It has been noticed recently that the backup and restore tabs are not responding. We have tried to restart the DRF master and local services  but no luck. In the logs there are no errors related to certificates als...

Which version of the PCD is required to upgrade call manager from 9.1.2 to 12.5 Current PCD version is : 10.6

 Can we Use UCS C220M3S server for call manager 12.5 version  ?if yes which firmware version should be running on UCS C220 M3S ? 

 We have Cisco VG204XM currently running the IOS image vg20xxm-ipvoice-mz.159-3.M1.bin . This does not include the SSH application. So can we change the IOS image to Advanced IP services (vg20xxm-advipservicesk9-mz.159-3.M1.bin) ThanksRohit