SSH version upgrade from 5.2 to 5.8 - Cisco CUCM8.5
1 - You can't upgrade/change the SSH version. (well, not without doing a full CUCM/Unity upgrade. But then, you don't get to choose what version to install. It's whatever Redhat/Cisco choose to install.)
2 - There is a document somewhere which says what Cisco "support" - but I've never had any compatibilty problems SSHing into a CUCM box from various different platforms (Linux, Mac. Windows & Putty). As to getting to a *nix shell to find the installed version: You can't. As far as mere mortals like us are concerned, the Redhat Linux O/S is strictly off limits.
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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 ...