Perhaps a trace from CCM will help located what is happening. Moreover, capture packets at both ends of the vpn tunnel and verify whether rtp and rtcp streams are getting through and well as not being altered in any way.
Make sure shinny, rtp and rtcp ports are opened on the f/w however may want to check the basics on CM for call routing.
Thanks, George. I have confirmed that it works on the LAN. I will check the ports on the firewall, since they may indeed be the problem. Wouldn't the phone fail to register, though, if skinny were being blocked?
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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 ...