CEPT1
Encyclopedia
CEPT Recommendation T/CD 06-01 was a standard set in 1981 by the European Conference of Postal and Telecommunications Administrations
(CEPT) for the display of Videotex
; specifically, for the Videotex Presentation Layer Data Syntax. It was revised a number of times in the 1980s, and also later redesignated as recommendation T/TE 06-01.
The standard aimed to bring a degree of harmonisation between Europe's emerging videotex systems, which had been diverging along national lines. It recognised four baseline profiles (with conformance criteria set out in Annex C) based on existing videotex services:
and defined criteria for a "harmonised enhanced" service.
National videotex services were encouraged to either follow one of the existing four basic profiles; or if they extended them, to do so in ways compatible with the harmonised enhanced specification.
Responsibility for the standard was passed to the new European Telecommunications Standards Institute
(ETSI) in 1988. The ETSI version of the standard is designated ETS 300 072.
European Conference of Postal and Telecommunications Administrations
The European Conference of Postal and Telecommunications Administrations was established on June 26, 1959, as a coordinating body for European state telecommunications and postal organizations...
(CEPT) for the display of Videotex
Videotex
Videotex was one of the earliest implementations of an "end-user information system". From the late 1970s to mid-1980s, it was used to deliver information to a user in computer-like format, typically to be displayed on a television.In a strict definition, videotex refers to systems that provide...
; specifically, for the Videotex Presentation Layer Data Syntax. It was revised a number of times in the 1980s, and also later redesignated as recommendation T/TE 06-01.
The standard aimed to bring a degree of harmonisation between Europe's emerging videotex systems, which had been diverging along national lines. It recognised four baseline profiles (with conformance criteria set out in Annex C) based on existing videotex services:
- CEPT1: BTXBildschirmtextBildschirmtext was a V.23 online service launched in West Germany in 1983 by the Deutsche Bundespost, the German postal service. Btx originally required special hardware, which had to be bought or rented from the post office...
(Germany) - CEPT2: Teletel (France)
- CEPT3: PrestelPrestelPrestel , the brand name for the UK Post Office's Viewdata technology, was an interactive videotex system developed during the late 1970s and commercially launched in 1979...
(UK) - CEPT4: Prestel Plus (Sweden)
and defined criteria for a "harmonised enhanced" service.
National videotex services were encouraged to either follow one of the existing four basic profiles; or if they extended them, to do so in ways compatible with the harmonised enhanced specification.
Responsibility for the standard was passed to the new European Telecommunications Standards Institute
European Telecommunications Standards Institute
The European Telecommunications Standards Institute is an independent, non-profit, standardization organization in the telecommunications industry in Europe, with worldwide projection...
(ETSI) in 1988. The ETSI version of the standard is designated ETS 300 072.
External links
- ETS 300 072 ETSI version of the standard, November 1990. Equivalent to CEPT T/CD 06-01 as amended to October 1988.
- ETS 300 072 A1, Amendment with various additions, October 1996.