We are currently facing an issue with Callers disconnecting from the PSTN and callstate on the IP Phone shows active. The call flow is as below
PSTN-->Cisco 3845--->CUCM 5.1
Signalling between the Voice GW & CUCM is SIP and the configs seem fine. Whenever the caller disconnects we recv Q931 disconnect with cause value 31 (Normal Unspecified) and Sip bye with Q850 reason = 31 sent to the callmanager and CUCM responds back with a 200 ok. On the IP Phone the call stays active for 30 secs and then disconnects.
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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 ...