Terminal Services functionality in Windows Server 2003 lets you remotely execute applications on a Windows-based server from a wide range of devices over virtually any type of network connection. A server running Terminal Services can be referred to as a Terminal Server (TS). A TS User CAL permits one user (using any device) to conduct Windows Sessions on any of your servers.
Features
Terminal Server 2003 is part of Server 2003
This is done via the Microsoft Open License Program
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