A wireless communications system including a network application server; and a base station to receive an expedited request packet from a subscriber unit by way of a radio frequency interface, attempt to reserve channel resources for a traffic channel to communicate with the subscriber unit, and notify the network application server of whether the channel resources have been reserved. The dispenser includes a first portion and a second portion. The force applicator is configured to be adjusted to a first height off the surface of the substrate. The uninstalling operation comprises deactivating the software on the machine. Locations in a plot where the objective function reaches minimum values are indicative of the acoustic velocity of the fast and slow polarizations within the formation. The fastening elements are located inside the casing so that the exterior of the casing is free of projections and recesses.