olemus
telefonisüsteemi teenus, helistaja numbri teatamine kõne sihtnumbrile
= a telephone service, that transmits a caller's telephone number to the called party's telephone equipment when the call is being set up

ülevaateid
https://answercentrela.com/caller-identification/
https://en.wikipedia.org/wiki/Caller_ID
https://www.techtarget.com/searchunifiedcommunications/definition/VoIP-caller-ID
https://crtc.gc.ca/eng/archive/2018/2018-32.pdf
https://docs.fcc.gov/public/attachments/DA-11-1089A1_Rcd.pdf
https://royalsocietypublishing.org/doi/10.1098/rsos.231608

vt ka
- helistaja maskeerimine