1.3.7 Device Control sequence
This sequence occurs on the device channel. The server uses this sequence to change the values of various device properties on the video capture device associated with this channel. First, the server sends an Activate Device Request (section 2.2.3.3), if it did not do so yet, to ensure that the device is ready for use. Next, the server sends a Set Property Value Request (section 2.2.3.20) for each device property which needs to be adjusted. At the end of the sequence, the server sends a Deactivate Device Request (section 2.2.3.4) to allow the client to free resources associated with the device.

Figure 7: Device Control sequence