(International Mobile Subscriber Identity,
"rahvusvaheline mobiilabonendi identifikaator")

olemus
identifikaator, mis antakse
GSM-võrgu abonendiks registreerimisel:
kõne- jm teenuste kasutamiseks peab abonendi telefonis
olema SIM-kaart kehtiva IMSI-numbriga
= a number that uniquely identifies every user of a cellular network

ülevaateid
https://www.techopedia.com/definition/5067/international-mobile-subscriber-identity-imsi

https://www.netmanias.com/en/post/blog/5929/lte/lte-user-identifiers-imsi-and-guti

https://en.wikipedia.org/wiki/International_mobile_subscriber_identity

https://www.tech-faq.com/imsi.html

https://www.atis.org/wp-content/uploads/2020/10/IMSI-Guidelines-v16.pdf

standard
https://www.etsi.org/deliver/etsi_en/300500_300599/300523/04.11.01_60/en_300523v041101p.pdf