A waveguide apparatus includes a waveguide attenuator portion having at least one waveguide cavity and a conductive fluid at least partially disposed within a waveguide cavity. The selective formation of FUSI enables metal gate electrodes to be fabricated on devices that are compatible with workfunctions that are different from conventional n+ and p+ doped poly silicon electrodes. The hose end configured for communication with the spark plug hole includes a resilient stopper sized to seal the end of the hose with respect to the spark plug hole when manually pressed into and held in the spark plug hole. One or more configuration instructions are automatically issued to both the media gateway controller and the media gateway, resulting in configuring both the media gateway controller and the media gateway as specified in the user input.