Frequentis AG is an Austria-based supplier of communications and information systems, diversifying its activities into two business segments: ATM (Air Traffic Management) business segment, which includes ATM Civil, including Information Management, and Defense business fields, and PST (Public Safety & Transport) business segment, which includes Public Safety, Public Transport and Maritime business fields. As of December 31, 2010, the Company had seven wholly owned subsidiaries in the area of Sales & Operations, four wholly owned subsidiaries and one majority owned subsidiary, as well as one affiliate, APUS Software GmbH, in the area of Software, and two wholly owned, one majority owned, one minority owned, as well as one affiliate, 3T Communications AG, in the area of Services. The Company's subsidiaries are located in the United States, the United Kingdom, Canada, Australia, Germany, Singapore, Slovak Republic, Romania, and the Czech Republic.