The present invention relates to an arrangement, for connecting high speed digital subscriber lines, comprising a digital subscriber line access multiplexer which is adapted to be in communication with a distribution arrangement interconnecting external trunk lines and internal subscriber lines. Accordingly, the present invention provides a lightweight laminated structure with low cost by reducing the amount of the resin used, since the molded synthetic resin outer circumference frame and bridging ribs have small projection areas. The LLC resonant converter is configured to turn on electronic switches with ZVS state in full input voltage range. Conversion parameters of the first and second image groups are calculated from the information about the specified plural corresponding points, so that the integrating process is executed.