emergency communication system
communication system used for emergency coordination, often made up of both input devices, sensors, and communication devices, typically capable of both initiating and receiving information among multiple parties
Inmarsat-C
satellite communications system
Integrated Public Alert and Warning System
main American emergency alert architecture
SPOT Satellite Messenger
it is a GPS tracking device that uses the Globalstar satellite network to provide text messaging and GPS tracking
National Warning System
American telephone system for emergency alert coordination
Emergency notification system
method of facilitating the one-way dissemination or broadcast of messages to one or many groups of people, alerting them to a pending or existing emergency