When you say "M3xx Media Server", are you referring to a TelePresence Server Multiparty Media 310/320?
Do you use a call control server such as CUCM or VCS? If so, you'll register the TP Server and SX10 to it, and call into conferences hosted on the TP Server. If you're not using a call control server, than you'll have to make calls into the TP Server by calling alias@IP_Address, where IP Address is the IP of your TP Server.
You can't register the SX10 to the TP Server, which is why it isn't an option, the TP Server is for hosting conferences only.
If you need more help, suggest you tell us more about your environment so we can get the bigger picture of what you're trying to do.
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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 ...