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Upgrade from CUCM 6.1.2.1000-13 to 8.5 vmware ESXI

Question asked by alaayehya on Oct 23, 2012

 

I have CUCM 6.0 on below Cisco Hardware compliance

 

Platform Type7828I3
Processor Speed2130
CPU TypeIntel(R) Core(TM)2 CPU 6400 @ 2.13GHz
Memory6144 Mbytes
Object ID1.3.6.1.4.1.9.1.899
OS Versionoperatingsystem.UCOS3.0.0.0-60

 

now we are moving everything to virtualization environment.

 

we have vmware ESXI and we need to upgrade CUCM 6.1.2.1000-13 to virtualized CUCM 8.5.

 

what are the steps to do that?

what about licenses?

how the upgrade will be done?

can i upgrade to 8.5 or no i have to upgrade to 8.0?

do I need to upgrade the firmware of phones,voice gateway

 

please anybody can help me doing that step by step?

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