Patent ID: 8959602
Filing Date: 2015-02-17
Classification: H04L,H04W

Abstract:
1. A user identification module configured for use in a mobile communication device, the user identification module comprising: memory, which further comprises: a first data item stored in the user identification module, the first data item being accessible for reading a value of a parameter used in the operation of the user identification module; wherein the first data item is included in a first elementary file stored in the user identification module; at least two second data items stored in the user identification module, the second data items being unmodifiable and each second data item including a value of the parameter; wherein the second data items are included in a second elementary file stored in the user identification module, particularly in a table comprised in the second elementary file; the first data item including a modifiable reference addressing one of the at least two second data items such that the value of the parameter read from the first data item can be changed by modifying the modifiable reference; wherein the modifiable reference is chosen to address the second data item including a desired value of the parameter; wherein an identification code is assigned to each second data item and wherein the modifiable reference includes the identification code, allowed values of the modifiable reference being restricted to the identification codes assigned to the second items; and wherein the modifiable reference including a part with a name of the second elementary file, and wherein the part of the reference with the name of the second elementary file is configured to be not modifiable.