When passing-particular-equipment identification data which indicates passing particular transmission equipment has been detected, two opposing CLAD blocks exchange items of information on the transmission or reception addresses of ATM cells in the respective CLAD blocks, via an exchange. The machine does this by using two high speed brushes. The present invention employs the concept of a \u201cservice\u201d to encapsulate server-side behavior accessed through the namespace. In the open position, the lens can be seated within the lens mounting area. The second vias are located outside of a radius from a center of the first via. The connection portion is generally flat and is less in bending resistance than adjoining parts of both housing and cover portions, whereby the package is most liable to bend at connection portion so as to bring the cover portion and the housing portion to each other.