A system and method for monitoring quality of experience includes forwarding a data packet flow carrying content between first and second endpoints. The coreless package substrate includes an interconnection structure and a ceramic stiffener. Nitriding the silicon dioxide based gate to provide a nitrided silicon dioxide based gate and to increase the dielectric constant of the silicon dioxide based gate without substantially increasing thickness of the silicon dioxide based gate. A combined response signal is generated substantially as a superposition of the first response signal and the second response signal. To ensure timely emptying of the full dust-collection container when working with the hand-held power tool, a viewing window is provided in the container wall, through which the dust fill level can be visually determined.