as nzs 3621-2000 information technology - data communications - x.25 packet layer protocol for data...
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AS/NZS 3621:2000ISO/IEC 8208:1995
Australian/New Zealand Standard
Information technologyData communicationsX.25 packet layer protocol fordata terminal equipment
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AS/NZS 3621:2000
This Joint Australian/New Zealand Standard was prepared by Joint TechnicalCommittee IT/1, Information SystemsInterconnection. It was approved on behalfof the Council of Standards Australia on 21 September 1999 and on behalf of theCouncil of Standards New Zealand on 20 September 1999. It was published on17 January 2000.
The following interests are represented on Committee IT/1:
Australian Association of Chief Information Officers
Australian Association of Permanent Building Societies
Australian Bankers Association
Australian Bureau of Statistics
Australian Chamber of Commerce and Industry
Australian Communications Industry Forum
Australian Computer SocietyAustralian Information Industry Association
Australian Telecommunications Users Group
Australian Vice-Chancellors Committee
CSIRO Mathematical and Information Sciences
Department of Communications and the Arts
Department of Industry Science and Tourism (Commonwealth)
Electrical Compliance Testing Association
Telecom New Zealand
Telstra Corporation
Keeping Standards up-to-date
Standards are living documents which reflect progress in science, technology andsystems. To maintain their currency, all Standards are periodically reviewed, andnew editions are published. Between editions, amendments may be issued.Standards may also be withdrawn. It is important that readers assure themselvesthey are using a current Standard, which should include any amendments whichmay have been published since the Standard was purchased.
Detailed information about joint Australian/New Zealand Standards can be found byvisiting the Standards Australia web site at www.standards.com.au or StandardsNew Zealand web site at www.standard.co.nz and looking up the relevant Standardin the on-line catalogue.
Alternatively, both organizations publish an annual printed Catalogue with fulldetails of all current Standards. For more frequent listings or notification ofrevisions, amendments and withdrawals, Standards Australia and StandardsNew Zealand offer a number of update options. For information about theseservices, users should contact their respective national Standards organization.
We also welcome suggestions for improvement in our Standards, and especiallyencourage readers to notify us immediately of any apparent inaccuracies orambiguities. Please address your comments to the Chief Executive of eitherStandards Australia International or Standards New Zealand at the address shownon the back cover.
This Standard was issued in draft form for comment as DR 99242.
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AS/NZS 3621:2000
Australian/New Zealand Standard
Information technologyData communicationsX.25 packet layer protocol fordata terminal equipment
Originated as AS 36211989.Previous edition AS/NZS 3621:1994.
Third edition 2000.
COPYRIGHT
Standards Aust ra lia/S tandar ds New Zea lan d
All rights are r eserved. No part of this work may be reproduced or copied in any formor by any means, elec tronic or mechanical, including photocopying, without the writtenpermission of the publisher.
Jointly published by S tandards Australia International Ltd, PO Box 1055, Strathfield,NSW 2135 and Standards New Zealand, Priv ate Bag 2439, Wellington 6020
ISBN 0 7337 3016 7
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ii
PREFACE
This Standard was prepared by the Joint Standards Australia/Standards New Zealand Committee
IT/1, Information SystemsInterconnection to supersede AS/NZS 3621:1994. This Standard is
identical with and has been reproduced from ISO/IEC 8208:1995, Information technologyData
communicationsX.25 Packet Layer Protocol for Data Terminal Equipment.
The objective of this Standard is to provide network designers with a specification for the procedures,
formats and facilities at the packet layer for data terminal equipment operating in conformance with
ITU-T Recommendation X.25.
The term informative has been used in this Standard to define the application of the annex to which
it applies. An informative annex is only for information and guidance.
As this Standard is reproduced from an International Standard, the following applies:
(a) Its number does not appear on each page of text and its identity is shown only on the cover andtitle page.
(b) In the source text this International Standard should read this Australian/New Zealand
Standard.
(c) A full point should be substituted for a comma when referring to a decimal marker.
References to International Standards should be replaced by references to equivalent
Australian/New Zealand Standards, as follows:
Reference to International Standard Australian/New Zealand Standard
ISO/IEC AS/NZS
646 Informat ion technologyISO 7-bit
coded character set for information
interchange
1776 Information processing7-bit coded
character set for information
interchange
7498
7498-1
Information technologyOpenSystems InterconnectionBasic
Reference Model
Part 1: The Basic Model
2777
2777.1
Information processing systemsOpenSystems InterconnectionBasic
reference model
Part 1: The basic model
8348 Informat ion technologyOpen
Systems InterconnectionNetwork
Service Definition
2994 Informat ion technologyOpen
Systems InterconnectionNetwork
service definition
8878 Information technology
Telecommunications and information
exchange between systemsUse of
X.25 to provide the OSI
Connection-mode Network Service
3604 Information t echnology
Telecommunications and information
exchange between systemsUse of
X.25 to provide the OSI
connection-mode network service
8886 Information technology
Telecommunications and information
exchange between systemsData link
service definition for Open Systems
Interconnection
3701 Information t echnology
Telecommunications and information
exchange between systemsData link
service definition for Open Systems
Interconnection
9574 Information technologyProvis ion of
the OSI connection-mode network
service by packet-mode terminal
equipment connected to an integrated
services digital network (ISDN)
4099 Information t echnology
Telecommunications and information
exchange between systemsProvision
of the OSI connection-mode network
service by packet mode terminal
equipment connected to an integrated
services digital network
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iii
ISO/IEC AS/NZS
9646
9646-1
9646-7
Information technologyOpen
Systems Interconnection
Conformance testing methodology and
framework
Part 1: General concepts
Part 7: Implementation Conformance
Statements
4103
4103.1
Information technologyOpen
Systems Interconnection
Conformance testing methodology and
framework
Part 1: General concepts
10588 Information technologyUse of X.25
Packet Layer Protocol in conjunction
withX.21/X.21bis to provide the OSI
connection-mode Network Service
4232 Information technologyUse of X.25
packet layer protocol in conjunction
withX.21/X.21bis to provide the OSI
connection-mode network service
10732 Information technologyUse of X.25
Packet Layer Protocol to provide the
OSI connection-mode Network
Service over the telephone network
4224 Information technologyUse of X.25
packet layer protocol to provide the
OSI connection-mode network service
over the telephone network
11577 Information technologyOpenSystems InterconnectionNetwork
layer security protocol
4471 Informat ion technologyOpenSystems InterconnectionNetwork
layer security protocol
CCITT
Rec. T.50 International Reference Alphabet
(IRA)
Rec. X.212 Data link service definition for open
systems interconnection for CCITT
applications
ITU-T
Rec. X.223 Use of X.25 to provide the OSIconnection-mode network service for
ITU-T applications
Rec. X.290 OSI conformance testing
methodology and framework for
protocol Recommendations for ITU-T
applicationsGeneral concepts
Rec. X.296 OSI conformance testing
methodology and framework for
protocol Recommendations for ITU-T
applicationsImplementation
Conformance Statements
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