Patent ID: 6011967
Filing Date: 2000-01-04
Classification: H04W

Abstract:
A cellular telephone operable in an alarm mode, comprising:means for receiving a sensor signal representing an occurrence of a predetermined event;means for providing said cellular telephone in said alarm mode;radio communication means for transmitting and receiving radio transmissions to and from a base station of a cellular network to establish channels of communication with called telephone numbers;control means for controlling, in response to the receipt of said sensor signal representing the occurrence of said predetermined event when said cellular telephone is in said alarm mode, said radio communication means to establish a channel with a predetermined telephone number, and to transmit to said predetermined telephone number identification data identifying said cellular telephone; and for establishing said cellular telephone in a selected operating mode after transmitting said identification data to said predetermined telephone number,wherein said control means is operable to control said radio communication means to disconnect the established channel with said predetermined telephone number and to automatically answer a call from a calling telephone number without ringing, and to establish said cellular telephone in a designated operating mode after the call is automatically answered.