You will notice that UCCX 6.0 is compatible only with CallManager 4.3(1). UCCX 5.0(2) is compatible with Communications Manager 5.1, 6.0, and 6.1. Your version of UCM will dictate which version you choose. If you are on CallManager 4.2 or lower I strongly recommend going to Communications Manager 6.1 over CallManager 4.3.
As far as an upgrade goes: You will loose the upgrade path between 4.0 and 4.5. Cisco changed the database schema and other underlying code between these two versions and broke the upgrade path in the process. You can port your scripts forward by opening them in the CRS Editor that comes with 5.x, re-validating, and saving them again into the new repository. Likewise, you can save your databases to another SQL server (NOT your new UCCX 5 box) and report against them separately if you require. Your other configurations (applications, skills/resource groups, CSQs, etc) will need to be rebuilt.
Also pay very careful attention to the new hardware you order. Do not place an order without carefully running through these two tools:
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The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...