We were having a similar problem some time ago. The problem of users getting the 'database unreachable' message when attempting 'forward all' is documented in the Bug CSCdx76806. The workaround is to use the Cisco CallManager user page to forward all calls.
We have a similar issue in our site . The Service Pack G for 3.2(2c) has the fix for this bug. Also a couple of thing that Cisco asked us to check
-The NIC versions running on the customers 7835's are known to be problematic. The documentation for the correct rev. can be found on CCO. This change requires a server reboot, I believe. (This rev can be downloaded from CCO or directly from the Compaq website).
-The port settings on the CallManager servers are fine (set to autoneg) as long as the switch side corresponds (also set to autoneg).
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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 ...