scope:

This Recommendation describes the characteristics of coded information that is exchanged between countries participating in the international interactive Videotex service.

Videotex Systems are text communication systems having in addition the capability of a given level of pictorial representation and a repertoire of display attributes. The text and pictures obtained are intended to be displayed using the current television (TV) raster standards of the different countries.

Different data syntax profiles are offered as a choice for the Administrations to implement their national services. Substantial degrees of compatibility exist between these options, but some transcoding and\or conversion may be necessary to facilitate interworking.

For the purpose of the international service, different data syntax profiles have been identified in the ETSI Recommendation T/TE 06-01:

a) Profile 1

b) Profile 2

c) Profile 3

d) Profile 4

e) "ASCII".

f) Other data syntaxes are for further study

Note: "ASCII" uses the International Reference Version of the character set of the CCITT Recommendation T.50 and additional control functions for characters specified in ISO standard 6429.

Note: the use of this non-videotex data syntax is provisional and is pending the result of the work undertaken in the ETSI TEI/VT group as well as in CCITT.

Purpose

The purpose of the Recommendation is:

a) to facilitate the interworking of different Videotex services:

b) to identify parameters needed to communicate with Videotex terminals; and

c) to provide technical recommendations desirable for potential interworking of other telematics services with Videotex services.