The first thing to do is to setup CallManager Groups. For example, say you have CallManager A,B, and C. You setup Group1 that has A as the primary and B,C as the secondary. You then create Group2 that has B as the primary and A,B as the secondary. Once you have done that, then create a Device Pool for each of the groups (DP1 and DP2). Now you assign half your phones to DP1 and the other half to DP2 and you have then load-balanced your servers.
More information can be found at the link below that might help.
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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 ...