A media gateway comprises a line interface comprising at least one input port, which is connectable to a time division multiplex communications carrier. This mechanism, which is plasmon excitation-driven and highly cooperative, produces bimodal particle size distributions. These permit the user to manually remove the rack from the oven without using tools or other apparatus. A dummy polysilicon layer, which is formed to cover approximately one half of the second field oxide with a remaining portion of the dummy polysilicon layer covering a second portion of the well of the second type, reduces the electric field in the drift region. Since packets are limited in length, however, the range of arrival times is bounded. A first bearing assembly is mounted between the drive shaft and the frame and operatively coupled to the first fan assembly to transmit thrust force from the first fan assembly to the frame.