We have recently upgraded our CCM for ver 6.1.1 to 6.1.5. after the upgarde when we adding new 7941 phone it shows 'auth fail' while startup and it registering with old firware i.e SCCP41.8-2-3S, the rest of the phone models registering without any problem. SCCP41.8-5-3S is the current firmware version in the system. Please advice how to resolve this.
Please note that this problem only when adding new phones, the existing 7941's are upgraded the firmware successfully.
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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
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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 ...