subscriber identity module (SIM)
Definition
Small printed circuit board which must be inserted in a GSM phone to sign-on as a legitimate subscriber and to make and receive calls. SIM holds a microprocessor that stores subscriber information (identification number, phone numbers, and personal preferences) and encrypts-decrypts voice signals making it virtually impossible to eavesdrop on somebody else's call.
subscriber identity module (SIM) is in the Data Management, Communications, & Networks subject.
subscriber identity module (SIM) appears in the definition of the following term: Global System for Mobile Communications (GSM)
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