US Patent 6934365 Emergency call device and method for controlling emergency call

An emergency call device has an emergency call-sending button and a disconnection button. The emergency call device carries out an emergency call to a service center when an emergency condition occurs. The emergency call device can terminate the emergency call in response to a disconnection request from the disconnection button only after a connection request signal, a user ID, and a current location data of the vehicle are transmitted to the service center. As a result, the service center can recognize the occurrence of the emergency call even when the disconnection is requested before originating the emergency call.