The Nikola Tesla Airport (NTA) Ontology is used to identify to which device/system an incoming (outgoing) signal belongs, which geographical location the signal is coming from, what its characteristics are, relationships with other devices/signals, etc. Currently, the airport ontology completely covers the ground floor of the Nikola Tesla airport building and the following systems: Emergency Lighting, Evacuation Access Control, Fire Protection, Flight Information Display, Heating, Ventilation, Air Conditioning, Smoke Extraction, and Video Surveillance system.