REVERSE 911� is the original Interactive Community Notification system developed by Sigma Communications, Inc. in 1993 to quickly contact citizens in a very specific geographic area for communicating urgent information.

REVERSE 911� is a Microsoft Windows�-based program that uses a patented combination of database and GIS (computer mapping) technologies.

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reverse 911, emergency notification, early warning system, emergency calling, telephone alert system, high volume calling, remote accessibility, brower-based interface, geographic or list calling, list calling, community notification, geographic calling, automated calling, automatic dialer, evacuation calling, emergency alerts, reverse 911 system, reverse 9-1-1, outbound calling, gis, interactive community notification, notification system, emergency notification system, patented interactive techology, interactive notification