The present invention provides a method and apparatus for providing real-time, two-way transactional capabilities on the network. One ends of the contact members serve as joining portions with respect to a circuit board of a portable telephone. An isolation layer on the bottom metal layer comprises a via hole exposing a portion of the bottom metal layer. Then, the actual behavior exhibited by the passive circuit in response to the interrogation is compared to the expected behavior of an optimal circuit in the absence of process variations in order to determine the one or more parameters. The bracing bracket is located in the frame to form a plurality of cells with the frame. A selecting mechanism selectively presses or separates the driving clutch discs and driven clutch discs, respectively, of the first and second clutch sections against each other.