For the phone you need it running 9.2.1 version. I am almost sure CUCM 8.6.1 already contains the incumbent files for it. You can double chekc that your tftp server in CUCM contains file SIP75.9-2-1S.loads. Use OS Administration>Software Upgrades>TFTP File Management>SEARCH Fuction
For configuring CTS, you can follow the following document
Cisco Unified Communications Manager Configuration Guide for the Cisco TelePresence System
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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 ...