Windows Server 2012 Remote Desktop Services - Licensing

We are running Windows Server 2012 Remote Desktop Services.  I have the licensing configured for a 'Per User' basis.  I have a question with regards to the connected sessions.  If a user has multiple connected sessions, does each 'session' count as a used license?  I'm assuming that each user can have multiple sessions, whether showing as active or disconnected - but only using one user CAL. I ran a CAL usage report, and it shows one license assigned to each user.
Just need verification.
Thank you,