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• Rec. ITU-T F.300 (1988) – Videotex service
• CONTENTS
• 1 Scope
• 2 Definition of terms
  • 2.1 Videotex service
  • 2.2 Videotex service facilities
  • 2.3 Participants in Videotex service
  • 2.4 Videotex systems
• 3 Functionalities of the service
  • 3.1 General
  • 3.2 Application level
  • 3.3 Presentation level
  • 3.4 Session level
  • 3.5 Communication levels (to be defined)
• 4 Operation of the Videotex service
  • 4.1 User information/directories
  • 4.2 User authorization and identification
  • 4.3 System fields
• 5 International interworking of Videotex service
• 6 Intercommunication with other telematic services
  • 6.1 Videotex-telex
  • 6.2 Telex-Videotex
  • 6.3 Videotex-Teletex
  • 6.4 Teletex-Videotex
  • 6.5 Videotex-facsimile and facsimile-Videotex (for further study).
• 7 Quality of service
  • 7.1 Provision, alteration, cessation and recovery of service
  • 7.2 Availability
  • 7.3 Call establishment
  • 7.4 Call retention
  • 7.5 Information transfer
• 8 Tariffing implications