Home > About Licensing > Briefs > Base and Additive Client Access Licenses
Server software that requires Client Access Licenses (CALs) offers one base CAL and may offer one or more additive CALs. Base CALs license access to server functionality. Additive CALs license access to advanced server functionality and must be licensed in addition to the corresponding base CAL. Both types of CALs are available for both users and devices.
This brief replaces a previous version published in December 2012. Significant changes in this new version included updates to reflect the current Enterprise CAL Suite components as of April 2013.
Base and Additive Client Access Licenses: An Explanation (PDF, 507 KB)
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