olemus
numberkoodid tüüpfraaside esituseks kõnesides,
eeskätt politseisides
=
brevity codes used to represent common phrases in voice communication, particularly by law enforcement

ülevaateid
https://en.wikipedia.org/wiki/Ten-code

http://www.njsoa.org/pdfs/tencode.pdf

https://www.einvestigator.com/police-ten-codes/