The unique feature key number is essential for which purpose?

On an IP Office 500 V2 there are two SD card slots. The first contains the System SD card, which has a unique feature key number.

The unique feature key number is essential for which purpose?
A . to provide the upgrade tool
B . to validate licenses
C . to set the Voicemail type, either Embedded or Voicemail Pro
D . to allow the storage of the correct version bin files

View Answer

Answer: B