Use this window to calculate the number of phone unit licenses that are required for a specific configuration of type of phones and number of phones of each type. A unit license refers to a fixed number of license units that correspond to each phone type. Cisco 7920 phones requires four license units and Cisco 7970 phones require five units. If you are provisioning four Cisco 7920 phones and four Cisco 7970 phones, then you require 36 phone license units.
Calculating License Units
Use the following procedure to calculate the number of phone licenses that are required when the number of phone types and the total number of phones per phone type is entered.
Step 1 Choose System > License > License Unit Calculator.
The License Unit Calculator window displays. The number of license units that are consumed per device displays corresponding to the node or device.
Step 2 In the Number of Devices column, update the number of needed devices corresponding to each node or phone.
Step 3 Click Calculate.
The total number of Cisco CallManager node license units and phone license units displays.