The invention expedites the delivery of a call originating in a circuit-switched network to a mobile terminal camped on a packet-switched network. The power management method includes detecting a level of residual battery power, and selectively enabling the provision of power to the smart card and the RF chip in accordance with the detected level of residual battery power. A tether connecting the both airbag portions can provide a proper forward inflation of the head-protection portion, suppressing an upward inflation of the head-protection portion. One end of a spring may be connected to a bellcrank rotatable on a shaft attached to a portion of a hinge secured to the enclosure. -% of a urethane compound A with at least two terminal urethane groups OR; R=hydrocarbyl residue of a monoalcohol) and having a number-average molar mass of from 400 to 5,000. The paper supply plate and the exhaust plate are spaced-apart from each other at a predetermined interval and are installed parallel to each other, and the paper supply unit is disposed at an upper portion of the exhaust unit, and the ink cartridge is disposed between the paper supply unit and the exhaust unit.