olemus
ISO 22300, CCTV system:
valvesüsteem, mis koosneb kaameratest, salvestitest, ühendustest ja videomonitoridest ning mida kasutatakse toimuva seireks kaupluses, firmas või üldisemalt mingis spetsiifilises taristus ja/või avalikus kohas
= surveillance system comprised of cameras, recorders, interconnections and displays that is used to monitor activities in a store, a company or more generally a specific infrastructure and/or a public place
ISO/IEC 18038:
videovalve, mis kasutab videokaameraid
signaali edastuseks piiratud arvule monitoridele
mingis määratud kohas
= video surveillance which uses video cameras to transmit a signal to a specific place on a limited set of monitors

ülevaateid
https://en.wikipedia.org/wiki/Closed-circuit_television
https://www.caughtoncamera.net/news/different-types-of-cctv/
https://www.dhs.gov/sites/default/files/publications/CCTV-Tech-HBK_0713-508.pdf

standardid
https://www.sis.se/api/document/preview/915537/
https://www.iso.org/standard/64935.html
https://www.imatest.com/solutions/iec-62676/
https://landingpage.bsigroup.com/LandingPage/Series?UPI=BS%20EN%2050132