Device Unregistered Reason Codes

[george_price]

I have a large number of devices unregistering and I pulled the reason codes out of the call manager guide. However they only go up to reason code 20. The one reason code I can't seem to define is reason code 28? Has anyone ran into this before or know what it is caused by?                  

[Suresh Subramanian · Accepted solution]

what is the exact error message do you see?

Error Message

UC_CALLMANAGER-3-EndPointTransientConnection : An endpoint  attempted to register but did not complete registration  Device IP  address [String] Device name [String] Device MAC address [String]  Protocol [String] Device type [Enum]Reason Code [Enum]Connecting Port [UInt] Registering SIP User [String] IPv6Address [String] IPAddressAttributes [Enum]IPv6AddressAttributes [Enum]LastSignalReceived [String] StationState [String]

Reason Code:28 - SecurityMismatch - Unified CM detected a mismatch  in the security settings of the device and/or Unified CM. This alarm can  occur due to any of the following situations: The device established a  secure connection yet reported that it does not have the ability to do  authenticated signaling; the device did not establish a secure  connection but the security mode configured for the device indicates  that it should have done so; or the device established a secure  connection but the security mode configured for the device indicates  that it should not have done so. To correct the error, ensure that the  security settings of the device and Unified CM are correct for your  deployment. Resetting the device may help because it forces the device  to download its latest settings. If the device is a Cisco phone, verify  that the TFTP service is running and reachable by the phone and view the  Unified CM Database Status report in Cisco Unified Reporting to verify  that database replication is Good. You can also issue the following  command on the CLI to view database replication: utils dbreplication  runtimestate. If the device is a third-party SIP phone, verify that the  configuration on the phone is set to UDP or TCP only; Unified CM does  not support TLS on third-party phones. Because each third-party phone  model has unique configuration interfaces, please refer to the  configuration guide for your phone to learn where the third-party phone  defines the UDP/TCP setting

FYI: http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/err_msgs/8_x/ccmalarms861.html

[george_price]

Thanks for the info. It's a huge help!!!