Patent ID: 6856818
Filing Date: 2005-02-15
Classification: H04M,H04W

Abstract:
1. A modified standard subscriber data storage module compatible with a mobile station used in a mobile communications system, the modified module comprising: a processor for performing operations; and a memory having data records for storing data, which memory is accessible by the mobile station sending memory access messages to the modified module, the mobile station complying with a predetermined standard and being adapted, in accordance with the standard, to transmit a first memory access message, identifying a specific data record, in order to access the specific data record on a standard subscriber data storage module complying with the predetermined standard, the modified module being responsive to the first memory access message, identifying the specific data record, wherein the memory holds a plurality of data records corresponding to the specific data record and the processor is arranged to select one data record, from the plurality of data records, to access in response to the first memory access message, the selection being performed on the basis of data identifying a current operational condition of the mobile station and independently of the content of the first memory access message, the identifying data held in a further data record in the module.