This enterprise device client access license (CAL) can be used only in conjunction with a standard Office Communications Server device CAL. It authorizes one computer to access certain Office Communications Server features, regardless of the number of users (for example, on a shared workstation).

The features licensed through the enterprise Office Communications Server device CAL include web conferencing, voice over IP, and application sharing.

User CALs are also available. A user CAL allows one user to access Exchange Server's additional features on any number of computers or other devices (for example, when an employee accesses the server from a computer at work and another at home).

Note: This license does not require media.