When a CTI/OS Client launches, it connects and first receives a logon profile then enables the logon button. Then you click the logon button, fill out the Agent, Extention and Device ID and press logon it connects again from the information received in the prior connection logon profile. One example is, if you loaded the Client with the CTI/OS Server IP Addresses the logon profile may have returned hostnames and the logon process is trying to connect to a hostname that it cannot resolve.
The CTI/OS Troubleshooting doc goes into much more detail on this and some suggestions to correct among other potential issues.
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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 ...