A wafer-shaped hollow fiber module adapted for in-line use in a piping system. The fabric is looped around the spreader rod in the hollow space. The apparatus further includes fasteners for at least one of the connection points that allow rigid locking of the drum to the carrier. The diaphragm portion and the active transducer portion may be configured such that the first and second resonance frequencies are substantially equal. In another embodiment, a method for mounting an integrated circuit device to a printed circuit board comprises affixing a bracket to the printed circuit board; mounting a socket to the printed circuit board; and coupling the integrated circuit to the socket, the integrated circuit being vertically and laterally constrained by the bracket. By associating a type of service with the particular signature that is used to form the RACH preamble it speeds up the service negotiation process.