SIST ETS 300 081 E1:2003

• Abstract:

  Definition of the end-to-end protocols to be used by Teletex terminals

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.050.30 - Equipment for telex, teletext, telefax
• ICS: 33.080 - Integrated Services Digital Network (ISDN)
• 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 300 081 ed.1 (1993-02) - Integrated Services Digital Network (ISDN); Teletex end-to-end protocol over the ISDN

Overview

SIST ETS 300 081 E1:2003 defines the end-to-end protocols for Teletex terminals when operating over an Integrated Services Digital Network (ISDN). Developed by the Slovenski inštitut za standardizacijo (SIST) and aligned with the European Telecommunications Standards Institute (ETSI), this standard ensures interoperable, manufacturer-independent Teletex text communications across ISDN. By referencing key international recommendations, it harmonizes Teletex operations, enhances international compatibility, and provides a framework for protocol conformance testing.

Key terms: ISDN, Teletex end-to-end protocol, terminal equipment, telematic services, protocol conformance.

Key Topics

The standard covers the following essential areas:

• Protocol Stack Specification: Outlines the use of low-layer protocols in ISDN for Teletex as defined in referenced CCITT Recommendations and ETSI standards.
• Session Layer Requirements: Details mandatory session layer behaviors for reliable communication between Teletex terminals, including document handling, capability negotiations, and buffer management.
• Presentation Layer Description: Specifies the coded character set and page format representations for Teletex documents, as defined in relevant CCITT recommendations.
• Conformance Requirements: Lists protocol conformance conditions, referring to recognized test procedures and providing additional session layer specific test cases.
• Test Procedures: Includes normative guidance for verifying protocol compliance, referencing internationally recognized test procedures to facilitate compatibility.

These provisions are crucial for ensuring that Teletex terminals can exchange text documents efficiently and reliably over ISDN, supporting both national and cross-border communication needs.

Applications

Practical implementation of SIST ETS 300 081 E1:2003 spans several areas:

• Teletex Terminals on ISDN: Manufacturers use this standard to ensure their equipment can communicate with third-party devices, maintaining consistent operations across networks.
• Telecommunications Service Providers: Adopt these protocols to deliver robust Teletex services leveraging the flexibility and capacity of ISDN.
• Conformance and Interoperability Testing: Test labs and network operators refer to these specifications to verify Teletex system compliance and troubleshoot interoperability issues.
• Upgrading Legacy Systems: Organizations modernizing Telex or Teletex services use this standard to transition to digital ISDN-based platforms.

Ensuring adherence to SIST ETS 300 081 E1:2003 benefits both end-users and providers by reducing communication errors, enabling reliable message delivery, and supporting international document exchange.

Related Standards

For comprehensive implementation and compatibility, the following related standards and recommendations are referenced or compatible with SIST ETS 300 081 E1:2003:

• CCITT Recommendation T.90: Characteristics and protocols for telematic terminals in ISDN.
• ETS 300 080: ISDN lower layer protocols for telematic terminals.
• CCITT Recommendation T.62 (and T.62 bis): Control procedures for Teletex and Group 4 facsimile services.
• CCITT Recommendation T.61: Character sets and repertoire for international Teletex services.
• CCITT Recommendation T.64: Conformance testing procedures for Teletex protocols.

Adopting SIST ETS 300 081 E1:2003 in concert with these related documents ensures optimal performance, interoperability, and international acceptance of Teletex services over ISDN.

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For reliable, standardized Teletex communications over modern digital networks, SIST ETS 300 081 E1:2003 remains an essential reference for telecom professionals, network operators, and equipment manufacturers.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digitalno omrežje z integriranimi storitvami (ISDN) – Protokoli za sistem Teletex pri izvedbi konec-konec prek sistema ISDNIntegrated Services Digital Network (ISDN); Teletex end-to-end protocol over the ISDN33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)33.050.30Oprema za teleks, teletekst, telefaksEquipment for telex, teletext, telefaxICS:Ta slovenski standard je istoveten z:ETS 300 081 Edition 1SIST ETS 300 081 E1:2003en01-december-2003SIST ETS 300 081 E1:2003SLOVENSKI
STANDARD
EUROPEANETS 300 081TELECOMMUNICATIONFebruary 1993STANDARDSource: ETSI TC-TEReference: T/TE 07-11ICS:33.080Key words:ISDN, TeletexIntegrated Services Digital Network (ISDN);Teletex end-to-end protocol over the ISDNETSIEuropean 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 1993. All rights reserved.SIST ETS 300 081 E1:2003

Page 2ETS 300 081: February 1993Whilst 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 300 081 E1:2003

Page 3ETS 300 081: February 1993ContentsForeword.51Scope and field of application.72Normative references.73Definitions and abbreviations.74Protocol description.84.1Network/Transport layer description.84.2Session layer description.84.3Presentation layer description.84.4Application layer description.85Protocol conformance requirements.8Annex A (normative):Additional session layer requirements.9A.1Additional ETSI-specific requirements to CCITT Recommendation T.62.9A.1.1Paragraph 3.4.1.2a.9A.1.2Paragraph 3.4.4.3.9A.1.3Paragraph 3.4.5.1.9A.1.4Paragraph 3.4.12.9A.1.5Paragraph 3.2.3.2.9A.1.6Paragraph 3.2.10.9A.1.7Paragraph 3.3.1.1c.9A.1.8Paragraph 3.3.2.6.9A.1.9Paragraph 3.3.2.7b.9A.1.10Paragraph 3.3.2.9.10A.1.11Paragraph 3.4.3.10A.1.12Paragraph 3.4.3.2e.10A.1.13Paragraph 3.4.4.4.10A.1.14Paragraph 3.5.3.10A.1.15Paragraph 4.1.3.10A.1.16Annex J, paragraph 2.1.1c.10Annex B (normative):Test procedures for end-to-end protocols.11B.1Introduction.11B.2References.11B.3Test limitations.11B.4Test numbering.11B.5Tests for additional session layer requirements.12Annex C (informative):Advisory notes and additional information.15History.16SIST ETS 300 081 E1:2003

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Page 5ETS 300 081: February 1993ForewordThis European Telecommunication Standard (ETS) has been produced by the Terminal Equipment (TE)Technical Committee of the European Telecommunications Standards Institute (ETSI).This ETS makes major reference to a number of CCITT Recommendations provided in the Normativereferences Clause (Clause 2), and can only be applied when considered together with elements of theCCITT Recommendations.Annex A is normative and provides additional session layer requirements plus the necessary amendmentsneeded to CCITT Recommendation T.62 [3]. Annex B is also normative and sets down test procedures forend-to-end protocols with reference to prETS 300 017 [8] together with CCITT Recommendation T.64 [7].SIST ETS 300 081 E1:2003

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Page 7ETS 300 081: February 19931Scope and field of applicationThis ETS refers to the low layer protocols to be used in the Integrated Services Digital Network (ISDN), asdefined in CCITT Recommendation T.90 [1] together with ETS 300 080 [2].This ETS specifies the end-to-end protocols to be used between two end systems as defined in CCITTRecommendation T.62 [3].In addition, it defines the octet-string to be interchanged based on the coding scheme, as defined inCCITT Recommendation T.61 [4].This ETS gives a general tool for a manufacturer-independent compatible text communication betweenend systems over the ISDN, based on the Telematic protocol stack.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 T.90 (1992): "Characteristics and protocols forterminals for telematics services in ISDN".[2]ETS 300 080 (1992): "Integrated Services Digital Network (ISDN); ISDN lowerlayer protocols for telematic terminals".[3]CCITT Recommendation T.62 (1988): "Control procedures for teletex andGroup 4 facsimile services".[4]CCITT Recommendation T.61 (1988): "Character repertoire and codedcharacter sets for the international teletex service".[5]CCITT Recommendation T.60 (1988): "Terminal equipment for use in theteletex service".[6]CCITT Recommendation T.62 bis (1988): "Control procedures for teletex and G4 facsimile services based on Recommendations X.215 and X.225".[7]CCITT Recommendation T.64 (1988): "Conformance testing procedures for theteletex Recommendations".[8]Draft prETS 300 017: Terminal Equipment (TE); "Test procedures for Teletex".3Definitions and abbreviationsFor the purpose of this ETS, the following definitions apply:Teletex document: octet strings encoded according to the primary and supplementary sets of graphiccharacter and the primary and supplementary sets of control functions as defined in CCITTRecommendation T.61 [4], §4.1 and §4.2, representing only characters out of the basic graphic characterrepertoire and the basic control function repertoire as defined in CCITT Recommendation T.61 [4], §3.2and §3.3, and complying with the basic page formats as defined in CCITT Recommendation T.60 [5],§4.2.The other terms and all abbreviations used throughout this ETS are as defined in the ETSs/CCITTRecommendations provided in Clause 2.SIST ETS 300 081 E1:2003

Page 8ETS 300 081: February 19934Protocol description4.1Network/Transport layer descriptionThe implementation of the Network/Transport layers shall be fully in line with the provisions laid down anddescribed in CCITT Recommendation T.90 [1] together with those in ETS 300 080 [2].4.2Session layer descriptionThe implementation of the Session layer shall be fully in line with the provisions laid down and describedin CCITT Recommendations T.62 [3] or T.62 bis [6] together with additional Session layer requirements(see Annex A).4.3Presentation layer descriptionThe implementation of the Presentation layer shall be fully in line with the provisions laid down anddescribed in CCITT Recommendation T.61 [4], §3.3, §4.1 and §4.2 and CCITT Recommendation T.60 [5],§4.2.4.4Application layer descriptionNone.5Protocol conformance requirementsThe protocol for the exchange of Teletex documents between two end systems is in conformity with theprovisions laid down in Clause 5 if the protocols fulfil the following requirements:-for Network/Transport conformance testing see ETS 300 080 [2];-for Session conformance testing see CCITT Recommendation T.64 [7] and Annex B of this ETS;-no tests are required for printing and displaying the received document.SIST ETS 300 081 E1:2003

Page 9ETS 300 081: February 1993Annex A (normative):Additional session layer requirementsA.1Additional ETSI-specific requirements to CCITT Recommendation T.62A.1.1Paragraph 3.4.1.2aIf a normal document is transmitted from a Teletex terminal to the Teletex conversion facility thisparameter shall be indicated.A.1.2Paragraph 3.4.4.3All terminals shall examine the non-basic terminal capabilities indicated in CSS or RSSP and shall not relyon subsequent CDCL/RDCLP exchange to negotiate the use of any capabilities from table 3/CCITTRecommendation T.62 [3].A.1.3Paragra
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