SIST ETS 300 222 E1:2003

• Abstract:

  To give a review about all Videotex terminal related standards.

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.160.99 - Other audio, video and audiovisual equipment
• ICS: 35.180 - IT Terminal and other peripheral equipment
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI ETS 300 222 ed.1 (1993-01) - Terminal Equipment (TE); Framework of Videotex terminal protocols

SIST ETS 300 222 E1:2003 is the Slovenian standard identical to ETS 300 222 Edition 1, issued by SIST from the ETSI work on Videotex terminal protocols. It gives the framework for Videotex terminal equipment: which protocol layers are used, which network configurations are covered, and how data syntax profiles fit with audio and photographic extensions for terminal-to-host connections.

What does SIST ETS 300 222 E1:2003 specify?

SIST ETS 300 222 E1:2003 specifies the overall protocol framework for Videotex terminals. It brings together the access methods used when a terminal connects directly to a host, via a Packet Assembler Disassembler (PAD), via a Videotex Access Point (VAP), or via a Videotex Service Centre (VSC).

The document is organized into clause 1 Scope, clause 2 Normative references, clause 3 Abbreviations, and clause 4 Overall structure of protocols and data syntaxes in various environments. Clause 4 then breaks down the framework for data syntaxes, ISDN circuit mode, ISDN packet mode, PSTN packet mode, and conformance testing.

What are the key requirements of SIST ETS 300 222 E1:2003?

SIST ETS 300 222 E1:2003 does not define one single terminal protocol. Instead, it defines how several Videotex protocol parts fit together, so implementers can choose the right stack for the network and service they are using.

• Clause 4.1 - data syntaxes: SIST ETS 300 222 E1:2003 says the data syntax profiles in ETS 300 072 can be used with the protocols in the later subclauses. In practice, a terminal must support the syntax profile chosen by the service and the country.
• Clause 4.1 - common extensions: SIST ETS 300 222 E1:2003 points to ETS 300 177 for photographic syntax and ETS 300 149 for audio syntax. This matters when a service needs image or sound content beyond plain text.
• Clause 4.1 - syntax switching: SIST ETS 300 222 E1:2003 uses ISO 2022 and ISO 9281 mechanisms for switching between coding environments. In practice, this tells implementations how to move between text, graphics, audio, and photographic data without ambiguity.
• Clause 4.2 - ISDN circuit mode: SIST ETS 300 222 E1:2003 refers to ETS 300 079 and ETS 300 080 for ISDN circuit mode. This separates the general end-to-end protocol from the detailed lower-layer parameter values that equipment must follow.
• Clause 4.3 - ISDN packet mode: SIST ETS 300 222 E1:2003 uses ETS 300 218 for lower layers 1 to 3 on the B and D channels, and ETS 300 223 for the common end-to-end aspects. This is the path for packet-based ISDN Videotex connections.
• Clause 4.4 - PSTN packet mode: SIST ETS 300 222 E1:2003 uses ETS 300 221 together with ETS 300 223 for packet mode over the PSTN. That gives a common way to build terminals for public switched access networks.
• Clause 4.5 - conformance testing: SIST ETS 300 222 E1:2003 points to prI-ETS 300 236 for conformance testing. This is what a lab or supplier uses to check whether an implementation follows the syntax-based Videotex protocol set.

What terms does SIST ETS 300 222 E1:2003 define?

• CCITT - Consultative Committee on International Telegraph and Telephony, the body named in the references and modem recommendations.
• ETS - European Telecommunication Standard, the type of standard used in this document family.
• ETSI - European Telecommunications Standards Institute, the organization that produced the standard.
• ISDN - Integrated Services Digital Network, the digital network used for circuit mode and packet mode access.
• PSTN - Public Switched Telephone Network, the traditional telephone network used for lower-speed and packet-mode Videotex access.
• PAD - Packet Assembler/Disassembler, the access element that can sit between a terminal and the host.
• VAP - Videotex Access Point, an access function point used in some Videotex configurations.
• VSC - Videotext Service Centre, a service-centre function that may also act as a host.

Who uses SIST ETS 300 222 E1:2003?

SIST ETS 300 222 E1:2003 is used by terminal designers, telecommunications engineers, and service operators working with Videotex systems. It is also relevant to test laboratories, because clause 4.5 points to conformance testing, and to buyers or integrators who need to match a terminal to PSTN or ISDN access, or to a service using specific Videotex syntax profiles.

What changed in SIST ETS 300 222 E1:2003 from the previous edition?

SIST ETS 300 222 E1:2003 is stated to be identical to ETS 300 222 Edition 1. The history note identifies the first edition as January 1993.

Which standards are used with SIST ETS 300 222 E1:2003?

Reference	What it contributes
CCITT F.300	Videotex service model and permitted configurations
ISO 2022	Code extension techniques for switching character sets
ISO 9281	Picture coding method and coding-environment switching
ETS 300 072	Videotex presentation layer data syntax profiles
ETS 300 073 / ETS 300 074 / ETS 300 075 / ETS 300 076	Geometric display, transparent data, processable data, and Terminal Facility Identifier
ETS 300 177 / ETS 300 149	Photographic syntax and audio syntax
ETS 300 218 / ETS 300 221	Lower layers for ISDN packet mode and PSTN packet mode
ETS 300 223	Common end-to-end protocols for syntax-based Videotex
ETS 300 079 / ETS 300 080	ISDN circuit mode protocols and detailed lower-layer characteristics
prI-ETS 300 236	Conformance testing for syntax-based Videotex protocols
CCITT V.17 / V.29 / V.32	Modem recommendations cited for packet-mode and conventional access speeds

What does the SIST ETS 300 222 E1:2003 document contain?

SIST ETS 300 222 E1:2003 contains a framework figure that maps the Videotex syntax standards, lower-layer protocol standards, end-to-end protocol standards, and conformance testing. It also contains the reference list and a short abbreviation list used throughout the text.

Clause 4 explains how the protocol families relate to one another, which is useful when selecting an implementation path for design or interoperability work. The document therefore functions as a roadmap to the related Videotex standards rather than a complete terminal specification by itself.

SLOVENSKI STANDARD
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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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 - [e-mail]
X.400: Internet:
Tel.: [phone] - Fax: [phone]
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

Page 2
ETS 300 222: January 1993
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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
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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
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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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