SIST ETS 300 105 E1:2003

• Abstract:

  Further handling of T/TE 06-20, 21, 22 after the completion of the public Enquiry and attempt to allign with CCITT Rec. T.101 (1992)

• 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 300 105 ed.1 (1991-12) - Terminal Equipment (TE); International Videotex interworking

SIST ETS 300 105 E1:2003 is a Slovenski inštitut za standardizacijo publication that reproduces ETS 300 105 Edition 1 from the European Telecommunications Standards Institute (ETSI). It specifies how coded information, protocols and service functions are exchanged for international Videotex interworking. It is written for service providers, network operators and implementers who need Videotex terminals, gateways and hosts in different countries to communicate.

What does SIST ETS 300 105 E1:2003 specify?

SIST ETS 300 105 E1:2003 specifies the characteristics of coded information exchanged between countries taking part in the international interactive Videotex service. The document focuses on international interworking, including gateway-to-gateway and terminal-to-host arrangements, and it ties those arrangements to the relevant network, transport, session, presentation and application layers.

The scope is practical: Videotex systems use text plus a defined level of pictorial representation and display attributes, and the results are meant to be shown on national TV raster standards. The standard also allows different data syntax profiles, so implementers may need transcoding or conversion when two countries use different profiles.

The document is organized into a foreword, scope, normative references, abbreviations, and clauses 4 to 7 on interworking. Clause 4 sets the general interworking context, Clause 5 covers international interworking configurations, Clause 6 covers interworking between gateways, and Clause 7 covers interworking between a terminal and a host.

What are the key requirements of SIST ETS 300 105 E1:2003?

SIST ETS 300 105 E1:2003 requires service providers to decide which network or networks carry the Videotex service. Clause 4 makes clear that interworking can be built on PSTN, PSPDN, CSPDN, ISDN and other network combinations, so the implementer must choose an architecture that matches the national service.

Gateway interworking

Clause 6 says international interworking should preferably happen between networks of the same type when both providers support them. When different network types are used, CCITT Recommendation X.75 applies. For ISDN-based interworking, the standard points to CCITT Recommendation T.90 or to bilateral agreement.

OSI layers and transport behavior

Clause 6 also anchors gateway interworking in the OSI model. The transport layer may use class 0 or class 2; class 0 is fully compatible with CCITT Recommendation T.70, while class 2 requires explicit flow control. This matters because it determines whether a simple transparent transport can be used or whether extra control logic is needed.

Presentation and coding

For the presentation layer, Clause 6 refers to the CCITT presentation service and protocol and to T.523 for Videotex use of those protocols. The content itself must follow one of the data syntax profiles in ETS 300 072, including Profile 1 to Profile 4 and ASCII. If countries use different profiles, the standard allows one profile to be selected for the exchange with transcoding or conversion at the originating or destination side.

Application layer and DTAM

Clause 6 uses ACSE and the document handling family around DTAM, including T.400, T.411, T.412, T.414, T.415, T.431, T.432, T.433 and T.441. In practice, that means the application layer is not just a transport wrapper - it also covers document structure, interchange format, service definitions and operational structure.

Terminal-to-host cases

Clause 7 defines several access cases for a terminal reaching a host in another country: via PSTN or ISDN bearer service, via PSPDN or ISDN bearer service, via PSPDN/PAD, via PSPDN through a VIU, and via PSPDN through a VSU. Each case fixes which protocols apply on the international link and which parts are left to the host or the national service provider.

What terms does SIST ETS 300 105 E1:2003 define?

• Videotex - A text-based communication service with a defined pictorial capability and display attributes, intended for display on TV raster standards.
• Packet Assembly/Disassembly (PAD) - A device that connects a start-stop terminal to a packet network and handles packet conversion for access.
• Videotex Interface Unit (VIU) - A unit that supports terminals and converts between data-syntax profiles, or switches between profiles.
• Videotex Service Unit (VSU) - A VIU that also handles charging, accounting and user identification or authorization.
• Association Control Service Element (ACSE) - The OSI application element used for establishing and managing associations in Videotex interworking.
• Document Transfer And Manipulation (DTAM) - The document services and protocols used in the Videotex application layer.
• PSPDN - Packet Switched Public Data Network, one of the network types used for interworking.
• PSTN - Public Switched Telephone Network, one of the possible bearer networks for terminal access.

Who uses SIST ETS 300 105 E1:2003?

SIST ETS 300 105 E1:2003 is used by Videotex service providers, telecommunications engineers, network planners and gateway designers who need international interoperability. It also matters to terminal vendors and host operators because it defines how their equipment must fit into cross-border service configurations.

Quality managers and buyers use it to check whether a proposed Videotex solution supports the right network path, data syntax profile and protocol stack. In practice, it is a coordination document for administrations and operators that must agree on access, transcoding, service functions and, in some cases, charging and authorization.

What changed in SIST ETS 300 105 E1:2003 from the previous edition?

SIST ETS 300 105 E1:2003 is identified as ETS 300 105 Edition 1. The history notes the first edition in December 1991 and a later conversion into PDF in January 1996. The scope note also places the work as a further handling of T/TE 06-20, 21 and 22 with an attempt to align it with CCITT Recommendation T.101 (1992).

Which standards are used with SIST ETS 300 105 E1:2003?

SIST ETS 300 105 E1:2003 relies on CCITT Recommendation T.101 for international Videotex interworking and on ETS 300 072 for Videotex presentation-layer data syntax. It is closely related to ETS 300 106 for terminal-to-host interworking and ETS 300 107 for gateway-to-gateway interworking.

For networking and protocol behavior, it uses the CCITT Recommendations X.3, X.25, X.28, X.29 and X.75 for PAD and packet-network access, and X.200, X.213, X.214, X.224, X.215, X.225, X.216, X.226, X.217 and X.227 for OSI services and protocols. It also refers to T.70, T.90, T.400, T.411, T.412, T.414, T.415, T.431, T.432, T.433, T.441, T.504, T.523, T.541 and T.564 for transport, ISDN use, document architecture and Videotex application profiles.

What does the SIST ETS 300 105 E1:2003 document contain?

The document contains configuration drawings and protocol guidance for international Videotex interworking. It shows gateway-to-gateway interworking and several terminal-to-host access cases, each with the relevant network path and protocol choices.

It also sets out how data syntax profiles are selected or converted, how OSI layers are applied, and how Videotex uses DTAM and related document architecture material. For implementers, the most useful parts are the layered protocol choices, the access configurations and the notes on when transcoding, conversion or profile switching is needed.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Terminalska oprema (TE) – Mednarodno medsebojno delovanje sistema VideotexTerminal Equipment (TE); International Videotex interworking35.180Terminalska in druga periferna oprema ITIT Terminal and other peripheral equipment33.160.99Druga avdio, video in avdiovizuelna opremaOther audio, video and audiovisual equipmentICS:Ta slovenski standard je istoveten z:ETS 300 105 Edition 1SIST ETS 300 105 E1:2003en01-december-2003SIST ETS 300 105 E1:2003SLOVENSKI
STANDARD
EUROPEANETS 300 105TELECOMMUNICATIONDecember 1991STANDARDSource: TE1Reference: TE-01020ICS:33.020Key words:TE; VideotexTerminal Equipment (TE);International Videotex InterworkingETSIEuropean Telecommunications Standards InstituteETSI SecretariatPostal address: F-06921 Sophia Antipolis CEDEX - FRANCEOffice address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCEX.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: [e-mail].: [phone] - Fax: [phone]Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and theforegoing restriction extend to reproduction in all media.© European Telecommunications Standards Institute 1991. All rights reserved.SIST ETS 300 105 E1:2003

Page 2ETS 300 105: December 1991Whilst every care has been taken in the preparation and publication of this document, errors in content,typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to"ETSI Editing and Committee Support Dept." at the address shown on the title page.SIST ETS 300 105 E1:2003

Page 3ETS 300 105: December 1991ContentsForeword.51Scope.72Normative references.73Abbreviations.94Interworking between Videotex services.104.1General.105International interworking of Videotex services.105.1International interworking configurations.105.1.1Gateway to gateway interworking.105.1.2Terminal to host interworking.106International interworking between gateways.106.1International interworking at network level.116.2Transport layer.116.3Session layer.116.4Presentation layer.126.4.1Presentation protocol.126.4.2Coding of Videotex information.126.5Application layer.126.6Relationship with Document Architecture Transfer And Manipulation (DATAM).127International interworking between a terminal and a host.127.1Access via PSTN or ISDN bearer service.137.2Access via PSPDN or ISDN bearer service.137.3Access via PSPDN/PAD.147.4Access via PSPDN through a Videotex Interface Unit (VIU) (2).147.5Access via PSPDN through a Videotex Service Unit (VSU).15History.16SIST ETS 300 105 E1:2003

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Page 5ETS 300 105: December 1991ForewordThis European Telecommunication Standard (ETS) has been prepared by the Terminal Equipment (TE)Technical Committee of the European Telecommunications Standards Institute (ETSI).This ETS has been produced in the light of:a)Videotex services being implemented in different countries using different data syntax profiles (asdescribed in ETS 300 072 [32]);b)the International Radio Consultative Committee (CCIR) expressing the view that terminal equipmentcompatibility should exist between broadcast Teletext 1)
systems for general reception and publicnetwork-based database systems;c)the right of different countries to use their existing systems;d)the possible requirement for transcoding and/or conversion to permit interworking between Videotexservices in different countries;e)interworking between Videotex services may be provided by using different types of networks suchas the Public Switched Telephone Network (PSTN), Packet Switched Public Data Network(PSPDN), Circuit Switched Public Data Network (CSPDN), Integrated Services Digital Network(ISDN), etc;f)the need for Videotex interworking protocols to offer a large degree of compatibility with thoseprotocols used in other telematic services.This ETS provides a number of technical provisions to enable the interworking of different Videotexservices at the international level, identifies the parameters required to communicate with Videotexterminals and certain technical recommendations for the potential interworking of other telematic serviceswith Videotex services.This ETS is also closely related , and normatively references, to three other ETSs (ETSs 300 072 [32],300 106 [33] and 300 107 [34]). Full details are given in Clause 2 (Normative references) of this Standard.
1)The term "Teletex" has not yet been definitively adopted by the CCIR.SIST ETS 300 105 E1:2003

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Page 7ETS 300 105: December 19911ScopeThis ETS describes the characteristics of coded information that is exchanged between countriesparticipating in the international interactive Videotex service.Videotex systems are text communication systems having, in addition, the capability of a given level ofpictorial representation and a repertoire of display attributes. The text and pictures obtained are intendedto be displayed using the current television (TV) raster standards of the different countries.Different data syntax profiles are offered as a choice for the service providers to implement their services.Substantial degrees of compatibility exist between these options, but some transcoding and/or conversionmay be necessary to facilitate interworking.For the purpose of the international service, different data syntax profiles have been identified in ETS 300072 [32]:a)Profile 1;b)Profile 2;c)Profile 3;d)Profile 4;e)"ASCII";f)other data syntaxes are for further study.NOTE 1:"ASCII" uses the International Reference Version of the character set of the CCITTRecommendation T.50 and additional control functions for characters specified in ISOstandard 6429.NOTE 2:The use of this non-videotex data syntax is provisional and is pending the result of thework undertaken in the ETSI TE1/VT group as well as in CCITT.2Normative referencesThis ETS incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text and the publications are listedhereafter. For dated references, subsequent amendments to, or revisions of any of these publicationsapply to this ETS only when incorporated in it by amendment or revision. For undated references the latestedition of the publication referred to applies.[1]CCITT Recommendation X.3 (1988): "Packet assembly disassembly facility(PAD) in a public data network".[2]CCITT Recommendation X.25 (1988): "Interface between Data TerminalEquipment (DTE) and Data Circuit-terminating Equipment (DCE) for terminalsoperating in the packet mode and connected to Public Data Networks bydedicated circuit".[3]CCITT Recommendation X.28 (1988): "DTE/DCE interface for a start-stopmode data terminal equipment accessing the packet assembly/disassemblyfacility (PAD) in a public data network situated in the same country".[4]CCITT Recommendation X.29 (1988): "Procedures for the exchange of controlinformation and user data between a packet assembly/disassembly (PAD)facility and a packet mode DTE or another PAD".[5]CCITT Recommendation X.75 (1988): "Packet-switched signalling systembetween public networks providing data transmission services".SIST ETS 300 105 E1:2003

Page 8ETS 300 105: December 1991[6]CCITT Recommendation X.200 (1988): "Reference model of open systemsinterconnection for CCITT applications".[7]CCITT Recommendation X.213 (1988): "Network service definition for opensystems interconnection for CCITT applications".[8]CCITT Recommendation X.214 (1988): "Transport service definition for opensystems interconnection for CCITT applications".[9]CCITT Recommendation X.224 (1988): "Transport protocol specification foropen systems interconnection for CCITT applications".[10]CCITT Recommendation X.215 (1988): "Session service definition for opensystems interconnection for CCITT applications".[11]CCITT Recommendation X.225 (1988): "Session protocol specification for opensystems interconnection for CCITT applications".[12]CCITT Recommendation X.216 (1988): "Presentation service definition for opensystems interconnection for CCITT applications".[13]CCITT Recommendation X.226 (1988): "Presentation protocol specification foropen systems interconnection for CCITT applications".[14]CCITT Recommendation X.217 (1988): "Association control service elementservice definition for open systems interconnection for CCITT applications".[15]CCITT Recommendation X.227 (1988): "Association control service elementprotocol specification for open systems interconnection for CCITT applications".[16]CCITT Recommendation T.90 (1988): "Characteristics and protocols forterminal for telematics services in ISDN".[17]CCITT Recommendation T.101 (1988): "International interworking for Videotexservices".[18]CCITT Recommendation T.400 (1988): "Introduction to document transfer,architecture and manipulation".[19]CCITT Recommendation T.411 (1988): "Open document architecture (ODA)and interchange format - Introduction and general principles".[20]CCITT Recommendation T.412 (1988): "Open document architecture (ODA)and interchange format - Document structures".[21]CCITT Recommendation T.414 (1988): "Open document architecture (ODA)and interchange format -Document profile".[22]CCITT Recommendation T.415 (1988): "Open document architecture (ODA)and interchange format - Open document interchange format (ODIF)".[23]CCITT Recommendation T.431 (1988): "Document transfer and manipulation(DTAM) - Introduction and general principles".[24]CCITT Recommendation T.432 (1988): "Document transfer and manipulation(DTAM) - Service definitions".[25]CCITT Recommendation T.433 (1988): "Document transfer and manipulation(DTAM) - Protocol specifications".[26]CCITT Recommendation T.441 (1988): "Document transfer and manipulation(DTAM) - Operational structure".SIST ETS 300 105 E1:2003

Page 9ETS 300 105: December 1991[27]CCITT Recommendation T.504 (1988): "Document application profile forvideotex interworking".[28]CCITT Recommendation T.523 (1988): "Communication application profile DM-1 for videotex interworking".[29]CCITT Recommendation T.541 (1988): "Operational application profile forvideotex interworking".[30]CCITT Recommendation T.564 (1988): "Gateway characteristics for videotexinterworking".[31]CEPT Recommendation T/SF-59: "Videotex Service".[32]ETS 300 072: "Terminal Equipment (TE); Videotex presentation layer protocol ;Videotex presentation layer data syntax".[33]ETS 300 106: "Terminal Equipment (TE) ; International Videotex interworkingbetween a terminal and a host".[34]ETS 300 107: "Terminal Equipment (TE) ; International Videotex interworkingbetween gateways".[35]CCITT Recommendation T.70 (1988): "Network independent basic transportservice for the telematic services".3AbbreviationsThe following abbreviations apply:ACSEAssociation Control Service ElementCCITTInternational Telegraph and Telephone Consultative CommitteeCCIRInternational Radiocommunication Consultative CommitteeCEPTConférence Européenne des Postes et TélécommunicationsCSPDNCircuit Switched Public Data NetworkDATAMDocument Architecture Transfer And ManipulationDTAMDocument Transfer And ManipulationETSEuropean Telecommun
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