A communication method for a mobile station communicating with a communication network and an associated mobile station are provided, wherein the mobile station has a first subscriber identity and a second subscriber identity. The vending machine includes a cabinet that establishes a product storage zone, a product delivery zone and a dispensing chamber. The narrowband ellipsometer provides very accurate information about the thickness of the thin film layer while the broadband spectrometer contains information about the nitrogen levels. By providing all amplifier chips within a single housing with matching networks within the housing coupling the chips to the input and output leads, manufacturing cost is reduced and the overall package footprint on a mounting substrate is reduced. The row direction barrier ribs of the barrier ribs are provided with communication portions communicating discharge cells in non-parallel to the column direction.