ISO/IEC 9834-3:2008

Information technology - Open Systems Interconnection - Procedures for the operation of OSI Registration Authorities - Part 3: Registration of Object Identifier arcs beneath the top-level arc jointly administered by ISO and ITU-T

ISO/IEC 9834-3:2008 specifies the procedures for adding or modifying entries in the "Register of arcs beneath the top level arc with primary integer value 2" and for the publication of such entries.

Technologies de l'information — Interconnexion de systèmes ouverts (OSI) — Procédures opérationnelles pour les organismes d'enregistrement de l'OSI — Partie 3: Enregistrement des arcs d'identificateur d'objet au-dessous de l'arc de niveau supérieur administré conjointement par l'ISO et l'UIT-T

General Information

• Status: Published
• Publication Date: 14-Dec-2008
• ICS: 35.100.01 - Open systems interconnection in general
• Technical Committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
• Drafting Committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
• Current Stage: 9093 - International Standard confirmed
• Start Date: 08-Dec-2025
• Completion Date: 13-Dec-2025

Relations

• Revises: ISO/IEC 9834-3:2005 - Information technology - Open Systems Interconnection - Procedures for the operation of OSI Registration Authorities: Registration of Object Identifier arcs beneath the top-level arc jointly administered by ISO and ITU-T - Part 3:
• Effective Date: 18-Dec-2008

Overview

ISO/IEC 9834-3:2008 specifies the procedures for registering Object Identifier (OID) arcs beneath the top-level arc jointly administered by ISO and ITU‑T (the arc with primary integer value 2, label "Joint‑ISO‑ITU‑T"). It defines how new arcs are allocated, how register entries are recorded, published and maintained, and how changes, deletions and disputes are handled. The standard ensures globally unambiguous naming within the International Object Identifier tree used with ASN.1 OIDs and OID IRIs.

Key topics and requirements

• Scope of registration: Procedures apply specifically to arcs under the joint ISO/ITU‑T top arc (primary integer value 2).
• Register entry elements: Each entry must include identification of the new node (primary integer value and names), optional non‑integer Unicode labels and secondary identifiers, the responsible Registration Authority (an international organization or a defined joint ISO/ITU‑T area of work), entry status (active/deleted), and nominated Responsible Officer(s).
• Assignment rules:
  • The primary integer value is assigned by the International Registration Authority, normally incremented sequentially.
  • If a primary integer value is 0–47, note that encoding into ASN.1 OID may produce a single initial octet (document explains this encoding implication).
  • Non‑integer Unicode labels and secondary identifiers are assigned only if not already present or inappropriate.
• Change and deletion policy:
  • Entries may be marked deleted (but retained) and their labels/primary values must never be reused.
  • Administrative changes are limited (e.g., replacing Responsible Officers, project numbers, or ITU‑T Question IDs).
• Maintenance and publication:
  • The register is to be maintained per ISO/IEC 9834‑1 procedures and is recommended to be published (for example via public OID repositories such as http://www.oid-info.com/get/2).
• Dispute resolution:
  • Conflicts (e.g., competing requests for the same Unicode label) are handled by the Joint ITU‑T | ISO/IEC JTC 1 Collaborative Team for object identifiers.

Practical applications and users

• Who uses it: ISO/IEC JTC 1 sub‑committees, ITU‑T Study Groups, international organizations seeking OID arcs, Registration Authorities, standards developers, and organizations that require globally unique OIDs for standards, protocols, schemas or registries.
• Why it matters: ISO/IEC 9834‑3 establishes authoritative, structured OID allocations for joint ISO/ITU‑T work or international organizations, enabling unambiguous identification in ASN.1 object identifiers, OID IRIs and related standards registries.

Related standards

• ISO/IEC 9834‑1 / ITU‑T Rec. X.660 - General procedures and top arcs of the International Object Identifier tree.
• ISO/IEC 8824‑1 / ITU‑T Rec. X.680 - ASN.1 basic notation (relevant for OID use and encoding).

Keywords: ISO/IEC 9834-3:2008, Object Identifier, OID registration, International Object Identifier tree, Registration Authority, joint ISO and ITU‑T, ASN.1 OID.

Standards Content (Sample)

INTERNATIONAL ISO/IEC
STANDARD 9834-3
Fourth edition
2008-12-15
Information technology — Open Systems
Interconnection — Procedures for the
operation of OSI Registration Authorities:
Registration of Object Identifier arcs
beneath the top-level arc jointly
administered by ISO and ITU-T
Technologies de l'information — Interconnexion de systèmes ouverts
(OSI) — Procédures opérationnelles pour les organismes
d'enregistrement de l'OSI: Enregistrement des arcs d'identificateur
d'objet au-dessous de l'arc de niveau supérieur administré
conjointement par l'ISO et l'UIT-T

Reference number
©
ISO/IEC 2008
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

©  ISO/IEC 2008
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Published by ISO in 2009
Published in Switzerland
ii © ISO/IEC 2008 – All rights reserved

CONTENTS
Page
1 Scope. 1
2 Normative references . 1
2.1 Identical Recommendations | International Standards. 1
3 Definitions . 1
3.1 ASN.1 terms . 1
3.2 International Object Identifier tree terms. 1
3.3 Additional definitions . 2
4 Abbreviations . 2
5 General information . 2
6 Elements of information of a register entry . 2
7 Procedures . 3
7.1 Maintenance of the register . 3
7.2 Recording of entries. 3
7.3 Deletion of entries. 3
7.4 Change of entries . 4
7.5 Resolving disputes . 4
Annex A – Proforma for registration. 5
A.1 Key to register entries . 5
A.2 An example of a possible registration entry for joint ISO and ITU-T work . 5
A.3 An example of a possible registration entry for an international organization X . 5

© ISO/IEC 2008 – All rights reserved iii

Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are members of
ISO or IEC participate in the development of International Standards through technical committees
established by the respective organization to deal with particular fields of technical activity. ISO and IEC
technical committees collaborate in fields of mutual interest. Other international organizations, governmental
and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information
technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of the joint technical committee is to prepare International Standards. Draft International
Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as
an International Standard requires approval by at least 75 % of the national bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
Subcommittee SC 6, Telecommunications and information exchange between systems, in collaboration with
ITU-T. The identical text is published as ITU-T Rec. X.662 (08/2008).
This fourth edition cancels and replaces the third edition (ISO/IEC 9834-3:2005), which has been technically
revised.
ISO/IEC 9834 consists of the following parts, under the general title Information technology — Open Systems
Interconnection — Procedures for the operation of OSI Registration Authorities:
⎯ Part 1: General procedures and top arcs of the International Object Identifier tree
⎯ Part 2: Registration procedures for OSI document types
⎯ Part 3: Registration of Object Identifier arcs beneath the top-level arc jointly administered by ISO and
ITU-T
⎯ Part 4: Register of VTE Profiles
⎯ Part 5: Register of VT Control Object Definitions
⎯ Part 6: Registration of application processes and application entities
⎯ Part 7: Joint ISO and ITU-T Registration of International Organizations
⎯ Part 8: Generation and registration of Universally Unique Identifiers (UUIDs) and their use as ASN.1
Object Identifier components
⎯ Part 9: Registration of object identifier arcs for applications and services using tag-based identification

iv © ISO/IEC 2008 – All rights reserved

Introduction
ITU-T Rec. X.660 | ISO/IEC 9834-1 defines procedures for registration to meet requirements for assignment of
unambiguous names to objects. These registration procedures are generally applicable to registration independent of

the type of object involved. In particular, ITU-T Rec. X.660 | ISO/IEC 9834-1 defines the International Object Identifier
tree, which is a tree whose nodes correspond to objects that are registered and whose non-leaf nodes may be
Registration Authorities. ITU-T Rec. X.660 | ISO/IEC 9834-1 also defines procedures for the delegation of authority for
the assignment of names in order to ensure that names are unambiguous. The International Object Identifier tree
supports the ASN.1 object identifier and OID internationalized resource identifier types.
The root of the International Object Identifier tree is ITU-T Rec. X.660 | ISO/IEC 9834-1. There are three root arcs
from this root:
Primary Resulting (Non-integer) Secondary identifier
integer integer-valued Unicode label
value Unicode label
"0" "ITU-T" itu-t
"1" "ISO" iso
"2" "Joint-ISO-ITU-T" joint-iso-itu-t
The Registration Authority for the nodes identified by the top-level arcs with primary integer values 0 and 1 (Unicode
labels "ITU-T" and "ISO") are provided by ITU-T Rec. X.660 | ISO/IEC 9834-1, Annex A. Further discussion is
beyond the scope of this Recommendation | International Standard.
The operation of the Registration Authority for the node identified by the joint arc (see 3.3) is specified in this
Recommendation | International Standard. The corresponding register is called the "Register of arcs beneath the top arc
with primary integer value 2".
© ISO/IEC 2008 – All rights reserved v

INTERNATIONAL STANDARD
ITU-T RECOMMENDATION
Information technology – Open Systems Interconnection – Procedures for
the operation of OSI Registration Authorities: Registration of object
identifier arcs beneath the top-level arc jointly administered
by ISO and ITU-T
1 Scope
This Recommendation | International Standard specifies the procedures for adding or modifying entries in the "Register
of arcs beneath the top level arc with primary integer value 2" and for the publication of such entries.
2 Normative references
The following Recommendations and International Standards contain provisions which, through reference in this text,
constitute provisions of this Recommendation | International Standard. At the time of publication, the editions indicated
were valid. All Recommendations and Standards are subject to revision, and parties to agreements based on this
Recommendation | International Standard are encouraged to investigate the possibility of applying the most recent
edition of the Recommendations and Standards listed below. Members of IEC and ISO maintain registers of currently
valid International Standards. The Telecommunication Standardization Bureau of the ITU maintains a list of currently
valid ITU-T Recommendations.
2.1 Identical Recommendations | International Standards
– ITU-T Recommendation X.660 (2008) | ISO/IEC 9834-1:2008, Information technology – Open Systems
Interconnect
...

INTERNATIONAL ISO/IEC
STANDARD 9834-3
Fourth edition
2008-12-15
Information technology — Open Systems
Interconnection — Procedures for the
operation of OSI Registration Authorities:
Registration of Object Identifier arcs
beneath the top-level arc jointly
administered by ISO and ITU-T
Technologies de l'information — Interconnexion de systèmes ouverts
(OSI) — Procédures opérationnelles pour les organismes
d'enregistrement de l'OSI: Enregistrement des arcs d'identificateur
d'objet au-dessous de l'arc de niveau supérieur administré
conjointement par l'ISO et l'UIT-T

Reference number
©
ISO/IEC 2008
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

©  ISO/IEC 2008
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Published by ISO in 2009
Published in Switzerland
ii © ISO/IEC 2008 – All rights reserved

CONTENTS
Page
1 Scope. 1
2 Normative references . 1
2.1 Identical Recommendations | International Standards. 1
3 Definitions . 1
3.1 ASN.1 terms . 1
3.2 International Object Identifier tree terms. 1
3.3 Additional definitions . 2
4 Abbreviations . 2
5 General information . 2
6 Elements of information of a register entry . 2
7 Procedures . 3
7.1 Maintenance of the register . 3
7.2 Recording of entries. 3
7.3 Deletion of entries. 3
7.4 Change of entries . 4
7.5 Resolving disputes . 4
Annex A – Proforma for registration. 5
A.1 Key to register entries . 5
A.2 An example of a possible registration entry for joint ISO and ITU-T work . 5
A.3 An example of a possible registration entry for an international organization X . 5

© ISO/IEC 2008 – All rights reserved iii

Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are members of
ISO or IEC participate in the development of International Standards through technical committees
established by the respective organization to deal with particular fields of technical activity. ISO and IEC
technical committees collaborate in fields of mutual interest. Other international organizations, governmental
and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information
technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of the joint technical committee is to prepare International Standards. Draft International
Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as
an International Standard requires approval by at least 75 % of the national bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
ISO/IEC 9834-3:2009 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 6, Telecommunications and information exchange between systems, in collaboration with
ITU-T. The identical text is published as ITU-T Rec. X.662 (08/2008).
This fourth edition cancels and replaces the third edition (ISO/IEC 9834-3:2005), which has been technically
revised.
ISO/IEC 9834 consists of the following parts, under the general title Information technology — Open Systems
Interconnection — Procedures for the operation of OSI Registration Authorities:
⎯ Part 1: General procedures and top arcs of the International Object Identifier tree
⎯ Part 2: Registration procedures for OSI document types
⎯ Part 3: Registration of Object Identifier arcs beneath the top-level arc jointly administered by ISO and
ITU-T
⎯ Part 4: Register of VTE Profiles
⎯ Part 5: Register of VT Control Object Definitions
⎯ Part 6: Registration of application processes and application entities
⎯ Part 7: Joint ISO and ITU-T Registration of International Organizations
⎯ Part 8: Generation and registration of Universally Unique Identifiers (UUIDs) and their use as ASN.1
Object Identifier components
⎯ Part 9: Registration of object identifier arcs for applications and services using tag-based identification

iv © ISO/IEC 2008 – All rights reserved

Introduction
ITU-T Rec. X.660 | ISO/IEC 9834-1 defines procedures for registration to meet requirements for assignment of
unambiguous names to objects. These registration procedures are generally applicable to registration independent of

the type of object involved. In particular, ITU-T Rec. X.660 | ISO/IEC 9834-1 defines the International Object Identifier
tree, which is a tree whose nodes correspond to objects that are registered and whose non-leaf nodes may be
Registration Authorities. ITU-T Rec. X.660 | ISO/IEC 9834-1 also defines procedures for the delegation of authority for
the assignment of names in order to ensure that names are unambiguous. The International Object Identifier tree
supports the ASN.1 object identifier and OID internationalized resource identifier types.
The root of the International Object Identifier tree is ITU-T Rec. X.660 | ISO/IEC 9834-1. There are three root arcs
from this root:
Primary Resulting (Non-integer) Secondary identifier
integer integer-valued Unicode label
value Unicode label
"0" "ITU-T" itu-t
"1" "ISO" iso
"2" "Joint-ISO-ITU-T" joint-iso-itu-t
The Registration Authority for the nodes identified by the top-level arcs with primary integer values 0 and 1 (Unicode
labels "ITU-T" and "ISO") are provided by ITU-T Rec. X.660 | ISO/IEC 9834-1, Annex A. Further discussion is
beyond the scope of this Recommendation | International Standard.
The operation of the Registration Authority for the node identified by the joint arc (see 3.3) is specified in this
Recommendation | International Standard. The corresponding register is called the "Register of arcs beneath the top arc
with primary integer value 2".
© ISO/IEC 2008 – All rights reserved v

INTERNATIONAL STANDARD
ITU-T RECOMMENDATION
Information technology – Open Systems Interconnection – Procedures for
the operation of OSI Registration Authorities: Registration of object
identifier arcs beneath the top-level arc jointly administered
by ISO and ITU-T
1 Scope
This Recommendation | International Standard specifies the procedures for adding or modifying entries in the "Register
of arcs beneath the top level arc with primary integer value 2" and for the publication of such entries.
2 Normative references
The following Recommendations and International Standards contain provisions which, through reference in this text,
constitute provisions of this Recommendation | International Standard. At the time of publication, the editions indicated
were valid. All Recommendations and Standards are subject to revision, and parties to agreements based on this
Recommendation | International Standard are encouraged to investigate the possibility of applying the most recent
edition of the Recommendations and Standards listed below. Members of IEC and ISO maintain registers of currently
valid International Standards. The Telecommunication Standardization Bureau of the ITU maintains a list of currently
valid ITU-T Recommendations.
2.1 Identical Recommendations | International Standards
– ITU-T Recommendation X.660 (2008) | ISO/IEC 9834-1:2008, Information technology – Open Systems
Interconnect
...