首页>
外国专利>
An emergency back-up system for enhancing reliability of rescue
An emergency back-up system for enhancing reliability of rescue
展开▼
机译:应急后备系统,提高救援可靠性
展开▼
页面导航
摘要
著录项
相似文献
摘要
A system is provided for enhancing the reliability of rescue services by providing a 911 back-up system in which the termination of an emergency call is sensed followed by dialling the telephone number of a predetermined dispatch office (30), with the dispatch office (30) providing a call back to the nearest PSAP (28) to ascertain whether or not rescue is on the way. In one embodiment for cellular phone applications, termination of the emergency call is sensed by detecting the call-in-progress flag (20) available on the phone's bus. In another embodiment, the originating phone (10) transmits the telephone number of the originating phone to permit personnel at the dispatch office (30) to call the originating phone back to ascertain the nature of the problem and if dispatched help has arrived.
展开▼