Interesting problem for sure. What I found was there was this wireless print server attached to the phone in the PC port. Somehow, of which Im not sure at the moment, it would cause this phone to unregister with CUCM. When I took this little wireless print server off, all worked normal again without problem. I should have taken a picture of the wireless print server. Oh well.
This is the retired Shane Killen personal blog, an IT technical blog about configs and topics related to the Network and Security Engineer working with Cisco, Brocade, Check Point, and Palo Alto and Sonicwall. I hope this blog serves you well. -- May The Lord bless you and keep you. May He shine His face upon you, and bring you peace.
Sunday, August 25, 2013
Cisco: 'UCM down, features disabled'
I came across a problem where a Cisco IP phone would slightly more than occasionally find itself unregistered with the CUCM. Below is what I would see:
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We threw out 4000 of these phones! Send them back if you can.ReplyDelete
Also do not use cisco routers or cisco access points because a department inside Cisco is under pressure to add spyware.
About the spyware: This phone when it boots (linux) insists on your PC being connected so the PC traffic goes through the phone.
Analysis of the phones daemon reveals intercption spyware of all Ethernet traffic.