DGC One AB is engaged in the development, distribution, and sale of data communications and telephony solutions. It is also focused on the Internet Protocol Virtual Private Network communication services. The firm operates through four business segments: Data Communications, Information Technology Operations, Telephony, and Hardware. The Data Communications segment offers traffic prioritization services in telephony, video conferencing and streaming. The Information Technology Operations segment offers capacity services, system management services, and user-related services. The Telephony segment works with centralized and customers premises. The company was founded by David Giertz in 1987 and is headquartered in Stockholm, Sweden.