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SIM Application Toolkit (STK) is a standard of the GSM system which enables the subscriber identity module (SIM card) to initiate actions which can be used for various value-added services. [1] Similar standards exist for other network and card systems, with the USIM Application Toolkit (USAT) for USIMs used by newer-generation networks being ...
USAT may refer to: . USA Today, national daily newspaper; USIM Application Toolkit, a standard which enables the USIM to initiate actions which can be used for various value-added services delivered to 3G mobile devices (USAT is the equivalent of STK for 3G cellular networks)
It is also possible to access a GSM network using a USIM application and it is possible to access UMTS networks using a SIM application with mobile terminals prepared for this. With the UMTS release 5 a new application, the IP multimedia Services Identity Module (ISIM) is required for services in the IMS. The telephone book is a separate ...
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The UICC with the SIM or USIM application plays an important role in mobile telephony as it is the secure element identifying a subscriber in the network and allowing MNOs to bill the respective account.
Download as PDF; Printable version; ... move to sidebar hide. From Wikipedia, the free encyclopedia. Redirect page. Redirect to: SIM card#USIM;
UMTS provides mutual authentication between the UMTS subscriber, represented by a smart card application known as the USIM (Universal Subscriber Identity Module), and the network in the following sense 'Subscriber authentication': the serving network corroborates the identity of the subscriber and 'Network authentication': the subscriber corroborates that he is connected to a serving network ...
A typical SIM card (mini-SIM with micro-SIM cutout) A SIM card or SIM (Subscriber Identity Module) is an integrated circuit (IC) intended to securely store an international mobile subscriber identity (IMSI) number and its related key, which are used to identify and authenticate subscribers on mobile telephone devices (such as mobile phones and laptops).