Good question! In fact CUCM 6.x is more Feature rich than the 5.x versions. CUCM 6.x was built based on CCM 4.2 and CUCM 5.x was built based on CCM 4.1 and thus the features carry across as such. Most people who are building new CUCM deployments these days are skipping directly to CUCM 7.x which has proven to be an excellent build. My vote would be to definitely skip 5.x
Also, another great enhancement that was added in version 6 is database resiliency, meaning that if your Pub goes down user features such as call forward All, MWI, extension mobility, etc will continue to operate.
CUCM 6 is considered much more stable. CUCM 5 was the first release with the linux appliance, and as such there are a host of issues with the database and other various things. Now this will vary depending on your exact version, but from a general standpoint that is how it can be viewed.
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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 ...