SIST ETS 300 081 E1:2003
(Main)Integrated Services Digital Network (ISDN); Teletex end-to-end protocol over the ISDN
- Abstract
Definition of the end-to-end protocols to be used by Teletex terminals
- Status
- Published
- Publication Date
- 30-Nov-2003
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Dec-2003
- Due Date
- 01-Dec-2003
- Completion Date
- 01-Dec-2003
SIST ETS 300 081 E1:2003 is the Slovenian adoption of ETS 300 081 Edition 1 from ETSI. It specifies the end-to-end protocol used by Teletex terminals over the Integrated Services Digital Network (ISDN), including the octet strings exchanged between end systems and the session-layer additions needed for compatibility. It is aimed at people who design, implement, test, or assess Teletex terminal interoperability on ISDN.
What does SIST ETS 300 081 E1:2003 specify?
SIST ETS 300 081 E1:2003 defines the Teletex end-to-end protocols between two end systems over ISDN. Clause 1 ties the document to the low-layer ISDN Telematic protocol stack, the Teletex end-system model, and the coding scheme for exchanged octet strings.
The document is organized into five clauses and three annexes:
| Part | What it covers |
|---|---|
| Clause 1 | Scope and field of application |
| Clause 2 | Normative references |
| Clause 3 | Definitions and abbreviations |
| Clause 4 | Protocol description by layer |
| Clause 5 | Protocol conformance requirements |
| Annex A | Additional session layer requirements |
| Annex B | Test procedures for end-to-end protocols |
| Annex C | Advisory notes and additional information |
Annex A and Annex B are normative, so they are part of what implementers and testers are expected to follow. Annex C provides supporting notes.
What are the key requirements of SIST ETS 300 081 E1:2003?
Clause 4 and Annex A set the technical behavior for Teletex over ISDN. In practice, the standard combines base CCITT/ETSI provisions with a few ETSI-specific additions that affect terminal behavior, message size, timing, and testing.
- Network/Transport layers - Clause 4.1 requires full alignment with CCITT Recommendation T.90 and ETS 300 080. This means lower-layer compatibility is not redefined here; implementers must follow those documents.
- Session layer - Clause 4.2 requires T.62 or T.62 bis plus Annex A. This is where the Teletex-specific session behavior is tightened, especially for document transfer and control exchange.
- Presentation layer - Clause 4.3 aligns the presentation layer with T.61 and T.60. For implementers, this fixes the character coding and page-format behavior used for Teletex documents.
- Document size and buffering - Annex A limits sending CDUI content to 5 000 octets and requires reception of at least 10 000 octets in one CDUI. This matters for terminal memory and for how long documents are segmented.
- Control and capability negotiation - Annex A requires terminals to examine non-basic terminal capabilities in CSS or RSSP, handle CDCL/RDCLP consistently, and allow CSCC only outside document boundaries. This affects call setup and whether a terminal can safely transfer control mid-session.
- Timing and flow control - Annex A fixes the timer value T at 4 s ± 1 s and requires a window size of three. This makes implementations interoperable by keeping retransmission and acknowledgement behavior predictable.
- Loop protection and page repetition - Annex A limits Teletex page repetition to once per transport connection and requires control to avoid endless loops. A terminal must be able to break the loop by disconnecting.
- Conformance testing - Clause 5 points network/transport testing to ETS 300 080 and session testing to T.64 plus Annex B. The standard also states that no tests are required for printing or displaying the received document.
What terms does SIST ETS 300 081 E1:2003 define?
- Teletex document - An octet string encoded with the graphic and control character sets of T.61 and limited to the basic repertoires, with basic page formats from T.60.
- end systems - The two terminal endpoints between which Teletex documents are exchanged.
- Session layer - The layer that handles Teletex document transfer control, checkpoints, and continuation behavior.
- CDUI - The user-information part of a document transfer command; Annex A uses it to set size limits.
- CDCL / RDCLP - Commands used for capability exchange and document continuation; Annex A tightens how terminals use them.
- nbtc - Non-basic terminal capabilities; these are the optional capabilities terminals must inspect during negotiation.
- CSCC - Change of control; Annex A says the calling terminal must be able to allow the called equipment to send documents by giving CSCC.
Who uses SIST ETS 300 081 E1:2003?
SIST ETS 300 081 E1:2003 is used by Teletex terminal manufacturers, ISDN equipment developers, and interoperability test laboratories. It is also relevant to telecom quality teams and purchasers who need to verify that Teletex terminals can exchange documents consistently over ISDN. Member bodies use the test procedures in Annex B for protocol conformance checks.
Which standards are used with SIST ETS 300 081 E1:2003?
| Reference | What it contributes |
|---|---|
| CCITT T.90 | ISDN telematics terminal characteristics and protocols for lower layers |
| ETS 300 080 | ISDN lower-layer protocols for telematic terminals |
| CCITT T.62 | Core control procedures for Teletex session behavior |
| CCITT T.61 | Character repertoire and coded character sets for Teletex |
| CCITT T.60 | Terminal equipment and basic page formats |
| CCITT T.62 bis | Alternative session control procedures based on X.215 and X.225 |
| CCITT T.64 | Conformance testing procedures for Teletex recommendations |
| prETS 300 017 | Teletex test procedures used together with Annex B |
What does the SIST ETS 300 081 E1:2003 document contain?
Annex A lists ETSI-specific session-layer amendments clause by clause, including capability handling, document size, timers, and control transfer rules. Annex B gives ETSI-agreed test cases, their setup, and expected results for those additional requirements. Annex C adds advisory notes on fields such as document reference numbers, session reference use, and linked document behavior.
Get Certified
Connect with accredited certification bodies for this standard
ANCE
Mexican certification and testing association.
Intertek Slovenia
Intertek testing, inspection, and certification services in Slovenia.
LNE (Laboratoire National de Métrologie et d'Essais)
French national laboratory for metrology and testing.
Sponsored listings
Frequently Asked Questions
SIST ETS 300 081 E1:2003 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Integrated Services Digital Network (ISDN); Teletex end-to-end protocol over the ISDN". This standard covers: Definition of the end-to-end protocols to be used by Teletex terminals
Definition of the end-to-end protocols to be used by Teletex terminals
SIST ETS 300 081 E1:2003 is classified under the following ICS (International Classification for Standards) categories: 33.050.30 - Equipment for telex, teletext, telefax; 33.080 - Integrated Services Digital Network (ISDN). The ICS classification helps identify the subject area and facilitates finding related standards.
SIST ETS 300 081 E1:2003 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
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: secretariat@etsi.frTel.: +33 92 94 42 00 - Fax: +33 93 65 47 16Copyright 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
Page 4ETS 300 081: February 1993Blank pageSIST ETS 300 081 E1:2003
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
Page 6ETS 300 081: February 1993Blank pageSIST ETS 300 081 E1:2003
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
...