Script detection service techniques are described. A cover includes a rearwardly extended outer peripheral flange engaged onto and secured to the outer peripheral flange of the base plate by welding processes. The home gateway device also may include a PPPoE access concentrator and an L2TP access concentrator. Using the connected fastening members, a plurality of the fastening members can be easily fit to a recessed portion of a mold in a single operation, resulting in improved working efficiency. A circular wall 44 is integrally formed with the partition member 15 to face the horizontal movable membrane 11 at predetermined intervals.