There are two types of Calling Search Spaces in CallManager, one for making calls the other for doing call forwards.
To achieve want you want to do, you could set up a dummy Calling Search Space called "CallFwdBarred" for example, then you need to go into the phone properties and change the forwarding Calling Search space to "CallFwdBarred", as you haven't assigned any partitions to that calling search space any attempts to forward to any number will come back with the number unobtainable tone.
The only thing I know you can do is make sure every dn and route pattern on the system is in a partition then create a Calling Search Space with no partitions in it and apply that to the call forward all search space. This will not disable the button but should prevent them from entering a number by giving them reorder everytime they try to do a call forward all.
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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 ...