Hi Nivanak,
Licenses for Adjunct Devices
With adjunct licensing, fewer device license units (DLUs) get consumed for adjunct (secondary) devices, such as Cisco IP Communicator, Cisco Unified Personal Communicator, and Cisco Unified Mobile Communicator, when these applications get used with a Cisco Unified IP Phone, which serves as the primary device. For adjunct licensing to work, the adjunct device must consume fewer or the same number of DLUs as the primary device.
For example, if you configure Cisco IP Communicator as a secondary device for the Cisco Unified IP Phone 7970, Cisco IP Communicator consumes only one DLU. Adjunct licensing works because the Cisco Unified IP Phone 7970 consumes five DLUs and Cisco IP Communicator consumes three DLUs.
In another example, if you configure Cisco IP Communicator as a secondary device for the Cisco Unified IP Phone 7906, adjunct licensing fails because the Cisco Unified IP Phone 7906 consumes two DLUs and Cisco IP Communicator consumes three DLUs. An error occurs when you configure an application, for example, Cisco IP Communicator, as the adjunct device, and the adjunct device requires more device license units (DLUs) than the primary device; for example, the Cisco Unified IP Phone 7906.
To ensure that Cisco Unified Communications Manager treats Cisco IP Communicator, Cisco Unified Personal Communicator, and Cisco Unified Mobile Communicator as adjunct (secondary) devices, configure the Primary Phone setting in the Phone Configuration window for Cisco IP Communicator, Cisco Unified Personal Communicator, and Cisco Unified Mobile Communicator.
The License Unit Calculator window displays (Adjunct) next to the applications that work as adjunct devices.
Hope it helps.
Anand
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