Sadly there is no setting that can "Lock" the Headset button On. I am guessing that you must have a user who never turns the Headset button Off and only uses the "New Call or End Call Softkeys to control the phone. You will see that once the Headset button has been pressed it will stay on forever unless cancelled, even through a hard reset of the IP Phone.
The only configurable setting via CCM is;
"Enable Auto Answer on Headset" from the Directory Number Configuration for the specified device.
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 ...
This document describe how DST changes and how time changes are
implemented in DST. Daylight Saving Time (DST) is the practice of
setting the clocks forward 1 hour from standard time during the summer
months, and back again in the fall, in order to make b...