An automatic transmission operating lever which includes a knob with a switch, a lever member and a conducting wire wired in the knob to send a signal from the switch. The disaster noticing server calculates the expected time of arrival at which the natural disaster will arrive at the current location of the disaster reporting terminal, and transmits the calculated expected time of arrival to the disaster reporting terminal. A shared orthogonal subchannel is assigned to at least two different idling subscriber units, but utilizing different time slots of the shared orthogonal subchannels.