BRIEF DESCRIPTION OF THE DRAWINGS [0015]FIGS. 1 and 2 are block diagrams of a device architecture per Universal Plug and Play using user control points, controlled devices and bridges for connectivity between devices. [0016]FIG. 3 is a block diagram of a device model per Universal Plug and Play. [0017]FIG. 4 is a block diagram illustrating example devices conforming to the device model of FIG. 3.