This enterprise user client access license (CAL) can be used only in conjunction with a standard Exchange Server user CAL. It allows one user to access certain Exchange Server 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).

The features licensed through the enterprise Exchange Server user CAL include:

Unified messaging
Integrated archiving
Multimailbox search and legal hold

Caution: This CAL does not provide access to Microsoft hosted services — Forefront Online Protection for Exchange and Forefront Protection 2010 for Exchange Server.

This CAL works with Exchange Server 2010, Standard and Enterprise editions, as well as previous versions of Exchange Server.

Device CALs are also available. A device CAL authorizes one computer to access Exchange Server's additional features, 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.

Restrictions:

Microsoft Program Guidelines