Overview#

Mobile Station International Subscriber Directory Number (MSISDN) is the mapping of the telephoneNumber to the SIM/UICC card in a Mobile Device

Mobile Station International Subscriber Directory Number together with IMSI are two important numbers used for identifying a mobile subscriber. The latter is stored in the SIM/UICC, i.e. the card inserted into the mobile phone, and each

IMSI is often used as a key in the HLR ("subscriber database") and Mobile Station International Subscriber Directory Number is the number normally dialed to connect a call to the Mobile Device. While the SIM/UICC has a unique IMSI that does not change, the MSISDN can change in time, i.e. different MSISDNs can be associated with the same SIM/UICC.

The MSISDN follows the numbering plan defined in the ITU-T recommendation E.164.

The SIM/UICC contains a Integrated Circuit Card Identifier (ICCID) which contains the Primary Account Number which can then be used for Financial transactions.

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« This page (revision-3) was last changed on 14-Mar-2017 11:08 by jim