This TS defines the interface between the Subscriber Identity Module (SIM) and the Mobile Equipment (ME), and mandatory ME procedures, specifically for "SIM Application Toolkit".
This TS refers in its majority to the ETSI TS 102 223 "Card Application Toolkit", which describes the generic aspects of application toolkits within the SIM. SIM Application Toolkit is a set of commands and procedures for use during the network operation phase of GSM, in addition to those defined in TS 51.011
Specifying the interface is to ensure interoperability between a SIM and an ME independently of the respective manufacturers and operators. The concept of a split of the Mobile Station (MS) into these elements as well as the distinction between the GSM network operation phase, which is also called GSM operations, and the administrative management phase are described in TS 42.017. This TS defines:
the application protocol;
the mandatory requirements on the SIMand ME for each procedure.