Company Profile

The REVERSE 911® system, invented by Sigma Communications, is headquartered in Indianapolis, IN with regional offices located across the United States. For over two decades, Sigma Communication's REVERSE 911® has set the standard for envisioning and implementing a notification solution designed to maximize communication within communities and organizations.

Today, REVERSE 911® is the industry leader in community notification, helping to ensure public safety and homeland defense at all times. REVERSE 911® is solely focused on the ongoing demand for effective and efficient communication, particularly in times of crisis.

REVERSE 911® is a stable, proven company with a commitment to industry excellence. We cater only to our clients and internal stakeholders - not public shareholders. We have consciously controlled our steady growth over the years, so we can consistently meet our clients' needs without over-extending our commitments. We focus on doing what we say and saying what we mean, without hype, flash or broken promises.

With customers across North American, varying in size from small towns to entire statewide systems, REVERSE 911® is the standard for community notification.