Exchange Server User CAL - Standard (Includes Software Assurance)
This standard user client access license (CAL) authorizes a user to access Exchange Server from any device (for example, when an employee accesses the server from a computer at work and another at home). It is valid for Exchange Server 2010 Enterprise and Standard editions, as well as previous versions of Exchange Server.
Enterprise Exchange Server CALs (user and device) are also available, providing access to additional features not covered by the standard CAL.
Device CALs are also available. A device CAL authorizes one computer to access Exchange Server, regardless of the number of users (for example, on a shared workstation).
License Only: This license does not require media, license keys, or setup codes.
Software Assurance: Under the Software Assurance program, you have the right to install any new release of products covered in the agreement during the term of your coverage.