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Ahmed habib
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upgrade CUCM Encrypted cluster from 10.5(SU5) to 12.5

Hello,

I have a project in a critical site to upgrade CUCM 10.5 SU5 Cluster to 12.5.

My environment is secure ad using mixed mode.

As I know CUCM 12.5 needs encryption license to operate fine.

1-Will CAPF Certificate change and impact phones ?

1- How Can I handle this during upgrade without any phone stuck ?

2- Will phones take the same Certificate,TVS, CTL parameters after upgrade or something may happen or need update ?

3- Will phones operate fine in demo time before uploading license ?

@Jaime Valencia  Can you help ?

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