What is meant by IMSI, TMSI, IMEI and MS-ISDN? Why they are
needed?
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Answer Posted / manish garg
IMSI MEANS INTERNATIONAL MOBILE SUBSCRIBER IDENTIY. IT IS
UNIQE FOR EVERY SUBSCRIBER AND IS STORED IN HLR AND IN SIM.
IT IS THE IDENTIFICATION OF THE MOBILE SUBSCRIBER.
TMSI IS TEMPORARY MOBILE SUBSCRIBER IDENTIY AND IS ALOTTED
TO SUBSCRIBER IN GSM, WHILE PAGING TMSI IS BROADCASTED
INSTEAD OF IMSI FOR SECURITY PURPOSES..
IMEI IS INTERNATIONAL MOBILE EQUIPMNT IDENTITY. IT IS UNIQE
FOR EACH MOBILE STATION.
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