QSC AG is engages in the provision of information technology and telecommunications services for small and medium enterprises. It operates through the following segments: Direct Sales, Indirect Sales, and Resellers. The Direct Sales segment includes national and international site networking; outsourcing solutions; and data center services such as Housing and Hosting, and Cloud services. The Indirect Sales segment offers Internet connections, direct connections to the QSC voice network, Voice-over-Internet Protocol products, virtual telephone system, and flexible modular design system. The Resellers segment comprises conventional voice services, residential call-by-call services, and Managed Outsourcing. The company was founded by Bernd Schlobohm and Gerd Eickers on January 30, 1997 and is headquartered in Cologne, Germany.