FOSS and AVI are two experienced and established companies co-owned to be the Sioux Empires full-service integrators for all of your communications, security, entertainment & lifestyle needs. FOSS started in Sioux Falls in 1999 providing primarily voice/data cabling services for the commercial market. In 2000-2002 it expanded its offerings to add security services, small telephone systems, and central vacuum systems. FOSS now provides a full line of services for the Commercial, Residential, and Agricultural markets. Audio Video... read full review »