Читать книгу Mobile Communications Systems Development - Rajib Taid - Страница 118

There are network identities that are permanent and unique in nature. Examples of permanent network element identities are mentioned below:

 An MS/UE is assigned an International Mobile Equipment Identity (IMEI) by its manufacturer that is burnt into the firmware of an MS/UE.

 An IMSI is assigned by an operator to a subscriber during its provisioning in the database of the Home Location Register (HLR). An IMSI is stored in the SIM card of an MS/UE.

 A Public Land Mobile Network (PLMN) identity of a network consists of the Mobile Country Code (MCC) and Mobile Network Code (MNC). A PLMN uniquely and globally identifies the operator of a particular network as an MCC is allocated by the International Telecommunication Union (ITU).

An operator‐configured network identity also can be a permanent one as long as its configuration does not change.