How Does Windows Server 2008 R2 RDS CAL Work?
The Remote Desktop Services Client Access Licenses is available as Windows Server 2008 R2 features for Remote session configuration which integrates into the client operating system. We can install the RDS CAL via the Internet or can buy the software from the authorized stores.
To install the RDS CAL, we must make sure that the Remote Desktop license server must be active before installing it. In Windows Server 2008 R2, it is RDS CALs (Remote Desktop Services client access licenses). RDS CALs are of two types which facilitate RDS per User CALs and RDS per Device CALs.