• Hydrogen Technologies Standards form the basic framework for market ramp-up

    More information
  • Climate change Standards and specifications support climate targets

    More information
  • Smart Farming Standards and specifications are drivers for the digitalization of agriculture

    More information
Standards [CURRENT]

OENORM EN 300957 V 7.0.1
Digital cellular telecommunications system (Phase 2+) - Unstructured Supplementary Service Data (USSD) - Stage 3 (GSM 04.90 version 7.0.1 Release 1998)

Edition 2000-04-01
Original language English
Price from 27.20 €
Table of contents