I have several VOIP phones of various models, how can I determine if the phone has a license?
What is the call manager u have along with IP phone models?
If CUCM version is 5/6/7/8, u need to use Device license Units [DLU] .
If CUCM version is 9 , u need to go for UCL/CUWL
You can Refer this URL for calculating DLUs which has DLU calculator.
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