An internal combustion engine includes a block defining a plurality of combustion cylinders, an intake manifold fluidly coupled with at least one combustion cylinder, and an exhaust manifold fluidly coupled with at least one combustion cylinder. The fastener includes a barrel and a flange, with a threaded portion in the barrel and an unthreaded portion beyond the threaded portion. The opening receives the elongated line conductor, which passes through the opening. The available transmit power at a future time instance is predicted and reduced by the first margin to derive a more accurate estimate of the available transmit power for the next frame. Another embodiment allows a user to select the ringtone, and the selected ringtone is communicated to an intelligent telecommunications switch. The principles set forth herein can be applied to occluding and non-occluding hearing device embodiments.