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TS 31.113 (CT6)
USAT Interpreter – Byte codes

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(P) V8.0.0    2009/02    136 p.
(P) V7.0.0    2007/06    136 p.
(P) V6.3.0    2005/01    137 p.
(P) V5.6.0    2005/01    98 p.

Rapporteur:  Mr. Jolivet, Paul
See also:  –

This TS specifies the byte codes that are recognised by an USAT Interpreter. The byte codes primary purpose is to provide efficient programmatic access to the SIM Application Toolkit commands.

The design objectives of the byte code set are:
  • Compact representation for efficient transmission over the air interface.
  • Minimisation of USAT Interpreter complexity to minimise SIM footprint and ease compliance testing.
  • Easily configured and extended.
  • Source language independent although XML-style mark-up languages are explicitly envisioned.
  • Transport bearer independent (e.g. SMS, GPRS...)
  • Transport protocol independent.
  • Independent from design of external entities.


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1   Scope   PDF-p. 10
2   References
3   Definitions, abbreviations and symbols   PDF-p. 11
4   Model of computation   PDF-p. 14
5   TLV Format   PDF-p. 22      Up
6   Variables   PDF-p. 24

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