NBN EN 62297-2 : 2007

INTRODUCTION
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
  3.1 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.1.1 General
          A.1.2 Page number
          A.1.3 Magazine Inventory Page
          A.1.4 20ms page delay
      A.2 Independent data line teletext transmissions
          A.2.1 General
          A.2.2 Alternative protocol stacks
          A.2.3 Fast trigger applications
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications

Describes how the trigger messages defined in IEC 62297-1 are transmitted. A trigger is defined as information sent from a service provider as part of a data broadcasting transmission that initiates an application in a receiver.