CEPT1 was a standard set in 1981 by the European Conference of Postal and Telecommunications Administrations (CEPT) for the display of Videotex. Otherwise known as "E1". Published under the reference T/CD 06-01 in May 1981. Year 1981 (MCMLXXXI) was a common year starting on Thursday (link displays the 1981 Gregorian calendar). ... The European Conference of Postal and Telecommunications Administrations (CEPT) was established on June 26, 1959 as a coordinating body for European state telecommunications and postal organizations. ... Videotex is a system for sending of pages of text to a user in computer form, typically to be displayed on a television. ...

CEPT1 was succeeded by the World System Teletext standard. World System Teletext (or WST) is the name of the first successful standard for encoding and displaying teletext information, and is used as the standard for teletext throughout Europe today. ...

The recommendation T/CD 06-01 can be found on the ETSI website, the document number is ETS 300 072. The European Telecommunications Standards Institute (ETSI) is a standardization organization of the telecommunications industry (equipment makers and network operators) in Europe, with worldwide projection. ...