ETSI ETS 300 222 ed.1 (1993-01)

SLOVENSKI STANDARD
SIST ETS 300 222 E1:2003
01-december-2003
Terminalska oprema (TE) – Okvir za terminalske protokole za sistem Videotex
Terminal Equipment (TE); Framework of Videotex terminal protocols
Ta slovenski standard je istoveten z: ETS 300 222 Edition 1
ICS:
33.160.99 Druga avdio, video in Other audio, video and
avdiovizuelna oprema audiovisual equipment
35.180 Terminalska in druga IT Terminal and other
periferna oprema IT peripheral equipment
SIST ETS 300 222 E1:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 222 E1:2003

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SIST ETS 300 222 E1:2003
EUROPEAN ETS 300 222
TELECOMMUNICATION January 1993
STANDARD
Source: ETSI TC-TE Reference: DE/TE-01015
ICS: 33.020, 33.040.40
Videotex
Key words:
Terminal Equipment (TE);
Framework of Videotex terminal protocols
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
F-06921 Sophia Antipolis CEDEX - FRANCE
Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - secretariat@etsi.fr
X.400: Internet:
Tel.: +33 92 94 42 00 - Fax: +33 93 65 47 16
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1993. All rights reserved.
New presentation - see History box

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ETS 300 222: January 1993
WWhhilsilst evert everyy c caarree has has been tak been taken in the pren in the prepareparation and publication and publication ofation of this this docdocumument, ent, ererrroorrss in in ccontent,ontent,
tytypogrpographicaphicaal l oror otherotherwwiissee, , mmaayy oc occcuurr. If If y you have cou have coommmmentsents c conconcererning itsning its ac acccuurraaccyy, pleas, please we wrrite to "ETite to "ETSSII
Standards Management Dept." at the address shown on the title page.Standards Management Dept." at the address shown on the title page.

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ETS 300 222: January 1993
Contents
Foreword .5
1 Scope .7
2 Normative references.7
3 Abbreviations.8
4 Overall structure of protocols and data syntaxes in various environments.9
4.1 Data syntaxes applicable to Videotex terminals .11
4.2 ISDN "Circuit mode".11
4.3 ISDN "Packet mode".11
4.4 PSTN "Packet mode".11
4.5 Conformance testing.11
History.12

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ETS 300 222: January 1993
Foreword
This European Telecommunication Standard (ETS) has been produced by the Terminal Equipment (TE)
Technical Committee of the European Telecommunications Standards Institute (ETSI).

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ETS 300 222: January 1993
1 Scope
Videotex is a public access information system which allows for the connection of a variety of terminal
equipment to databases of information (servers) or to other terminals over widely available public
telecommunications facilities. Initially, terminals were connected to information servers over the
conventional Public Switched Telephone Network (PSTN). This was accomplished using low cost
modems: typically at 1 200/75 or 1 200/1 200 bit/s. With the introduction of the Integrated Services Digital
Network (ISDN) and improved modem facilities, a number of other optional configurations are becoming
viable for the connection of Videotex terminals to server systems. These include higher speed
conventional modems at 2 400 or 4 800 bit/s, much higher speed modems such as 9 600 bit/s (CCITT
Recommendation V.29 [18], CCITT Recommendation V.32 [19]) or 14 400 bit/s (CCITT Recommendation
V.17 [17]) and ISDN connections using packet mode on a B or D channel and circuit switched mode.
A number of Videotex communications configurations are possible using these new communications
facilities. This ETS describes the method by which these facilities will be used in Videotex.
This ETS describes the application layer and lower layer protocols which are to be used for terminal to
host Videotex systems operating over various types of networks. This includes:
- ISDN 64 kbit/s circuit mode;
- ISDN 64 kbit/s packet mode;
- ISDN D channel packet mode;
- PSTN packet mode operation using CCITT V. series modems.
In addition, the existing PSTN based Videotex services are identified. These services make use of
relatively low speed modems operating in asynchronous circuit switched mode over the PSTN or
equivalent networks.
This ETS also identifies the data syntax profiles to be used in the various configurations within the various
countries, together with the common data syntaxes for audio and photographic information. The
relationships between the various CCITT Recommendations applicable to Videotex are defined.
2 Normative references
This ETS incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications
apply to this ETS only when incorporated in it by amendment of revision. For undated references the latest
edition of the publication referred to applies.
[1] CCITT Recommendation F.300 (1988): "Videotex service".
[2] ISO 2022 (1986): "Information processing - 7-bit and 8-bit coded character sets
- Code extension techniques".
[3] ISO 9281 (1990): "Information technology - Picture coding method".
[4] ETS 300 072: "Terminal Equipment (TE); Videotex Presentation Layer protocol,
Vi
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