You can't use a linux server for TFTP, the TFTP server must be call manager. When you create a phone in CM, it also creates a config file and puts it in the TFTP directory to be downloaded by the phone.
If you are trying to use a phone without call manager, that is a different story, please explain what you are trying to accomplish.
I have used Win2K and Win2k3 servers for TFTP, you just need to make sure you have the config file in the directory. The config file is referenced by MAC address. Not knowing Linux, but TFTP is a standard I can't see why it would not work.
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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 ...