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
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
5.3 International interworking configurations
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
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