Single phone displays "Unknown" for any inbound calls
I have caller ID working fine on all phones, except one apparently.
I have a user that whenever they get an external inbound call, the display only has a single line that says "Unknown". No number, just the word "Unknown". This happens regardless of the calling party (for instance my cell # says "Unknown" on her phone but her co-worker's phone displays it as "WIRELESS CALLER" and my 10-digit number. In addtion, it shows the same in "Missed Calls" simply displaying "UNKNOWN" with no call back number.
Internal inbound calls display fine on her phone, showing name and extension.
Any ideas on what to check for this user's phone that is only displaying "UNKNOWN" ??
I have compared both the device and line with another user that is fine and both are exactly the same as far as the parameters, etc.
I have looked at her inbound translation pattern and it looks correct and the same as other users as well.
At this point, I'm not sure what to check. I've reset her phone, same issue.
I'm assuming there's a setting somewhere in CUCM but I have yet to find it for her number/device.
I have the same problem : customer running CUCM 10.5.2 has a single 8861 phone that shows Unknown on all inbound calls. The phone sitting next to it with an identical configuration (except different DNs), and the 400+ other various phones in their organization, are all working correctly. All of their 8861 are running the same firmware sip88xx.11-0-1-11.
A factory reset of that phone made no difference. I'd love ideas on what to try next.
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The short answer is that you don't.... That isn't entirely true while at
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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 ...