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IoT Glossary

IMSI (International Mobile Subscriber Identity)

The IMSI is the unique identifier of user on a network. SIM cards can have multiple IMSIs, but each IMSI on a network identifies a unique SIM card (the IMSIs are stored in the HLR/VLR for the network). The IMSI the primary key to each for each HLR record. IMSI = MCC + MNC + MSIN.

MCC (Mobile Country Code)

MNC (Mobile Network Code)

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