[cisco-voip] Upgrade Analysis for CUCM 8.5(1) to 8.6(2a), 9.0(1), or 9.1(1a)

[Dave Wolgast]

Has anyone done any analysis like this that they would be willing to share?
We are trying to determine upgrade complexity among these 3 options,
considering licensing, any upgrade caveats, and potential user-facing
changes. We'll be performing the potential upgrade on UCS-B platforms, and
essentially, we need to choose one of these options to maintain UCCE
compatibility, while keeping disruption to a minimum.

-- 
Dave Wolgast
Livonia, NY
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