�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