difference between unregistered unknown and rejected in ip phone status

[hussen2015]

Hello Everyone;

Can you please tell me the Difference Between unregistered unknown and rejected in ip phone status 

[Rajan · Accepted solution]

Unknown means actually the phone is either not connected or not in the network to reach the CUCM
Unregistered - If the phone registers once and rebooting for any reason or disconnected recently it will be in this state
Rejected - There is some issue with phone registration - you need to check the logs to find the reason code to identify the exact cause and troubleshoot

HTH
Rajan
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