FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
3.1 Terms and definitions
3.2 Abbreviations
4 Teletext-based methods
4.1 Page-format method
4.1.1 Maximum length of a trigger message
4.1.2 Data stream
4.1.3 Transmission aspects
4.2 Independent data line method
4.2.1 Maximum length of a trigger message
4.2.2 Data stream
4.2.3 Packet structure
5 MPEG-2 transmission-based method
Annex A (informative) Code of practice
A.1 Page-format teletext transmissions
A.2 Independent data line teletext transmissions
Annex ZA (normative) Normative references to international
publications with their corresponding European
publications