Your best bet is to upgrade your existing server to 4.2.1.
Depending on how old the hardware is, take the opportunity to set up a new server from scratch with 4.2.1 and then restore from the DiRT that you make after you other upgrade the original server.
Thats what I ended up doing last time since my servers were a little old. If you do that, just remember to get a new license file from TAC. They can modify it to work with the new mac address no problem.
If you have a failover environment, use the dirt from the seconday so you dont have to go in and edit the database.
Install Unity 4.0 on your new server and use DIRT to transfer the database and settings, then upgrade your new server to 4.2.1
Create a DIRT Backup of your existing Unity server, pull a drive and run the Unity upgrade from 4.0 to 4.2.1 (insert cd and go) It will take some time upgrade if you have mucho users. The SQL database also gets converted to a new format (time)
after the upgrade, use DIRT to move your 4.2.1 to a new server, or continue to use the old.
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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 ...