To access this server software legally, a Client Access License (CAL) may be required. A CAL is not a software product; rather, it is a license that gives a user the right to access the services of ...

the Terminal Server issues the client a temporary Terminal Server Client Access License (CAL) token. After the user has logged into the session, the Terminal Server instructs the License Server to ...

Client Licenses are required to access all Skype for Business Online and Server features. Standard CALs enable users or devices to connect to Skype for Business ...