On an information recording medium, a recording area is divided in a plurality of data areas, and data is recorded on each of the data areas. A torch head is replaceably connected to a torch body. Also provided are energy-absorbing housing systems comprising a rotatable liner, one or more restraint ribs, and a fluid film bearing to control and dissipate the energy from the failure of a rotating mass. The auxiliary area has at least a protruding portion thereof protruding integrally and outwardly from the main area. If the user is authorized, a second message is transmitted to the first carrier system, the second message indicating that the first carrier system is to connect the call to the call processing system. The guiding part and the bottom wall cooperatively define a receiving room receiving the sliding portions.