Universal Subscriber Identity Module Application Toolkit (USAT) interpreter architecture description
The present document defines the stage 2 description for the USAT Interpreter system. As the second stage of a three-level structure, it is derived from the stage 1 service description.
The present document defines the overall architecture for the USAT Interpreter system:
 Role models;
 System architecture;
 Function and information flow.
The stage 3 documents shall conform to the present document.