ISO/IEC 24764:2010/AMD1:2014

Amendment 1 - Information technology - Generic cabling systems for data centres

Gives requirements for properties of copper foil intended for use in the manufacture of copper-clad laminated sheets and of copper-clad flexible materials, used in the manufacture of printed boards.

General Information

• Status: Replaced
• Publication Date: 29-Apr-2014
• ICS: 31.180 - Printed circuits and boards
• ICS: 35.200 - Interface and interconnection equipment
• Technical Committee: ISO/IEC JTC 1/SC 25 - Interconnection of information technology equipment
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 13-Nov-2017

Relations

• Replaces: ISO/IEC 11801-5:2017 - Information technology - Generic cabling for customer premises - Part 5: Data centres
• Effective Date: 28-Jun-2024
• Amends: ISO/IEC 24764:2010 - Information technology - Generic cabling systems for data centres
• Effective Date: 05-Sep-2023

Standards Content (Sample)

ISO/IEC 24764
Edition 1.0 2014-04
INTERNATIONAL
STANDARD
AMENDMENT 1
Information technology – Generic cabling systems for data centres

ISO/IEC 24764:2010-04/AMD1:2014-04(en)

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 IEC or IEC's member National Committee in the country of the requester. If you have any questions about
ISO/IEC copyright or have an enquiry about obtaining additional rights to this publication, please contact the address

below or your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie

et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des

questions sur le copyright de l'ISO/IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication,
utilisez les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé Fax: [phone]
CH-1211 Geneva 20 [e-mail]
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the

latest edition, a corrigenda or an amendment might have been published.

IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing more than 30 000 terms and
Technical Specifications, Technical Reports and other definitions in English and French, with equivalent terms in 14
documents. Available for PC, Mac OS, Android Tablets and additional languages. Also known as the International
iPad. Electrotechnical Vocabulary (IEV) online.

IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a More than 55 000 electrotechnical terminology entries in
variety of criteria (reference number, text, technical English and French extracted from the Terms and Definitions
committee,…). It also gives information on projects, replaced clause of IEC publications issued since 2002. Some entries
and withdrawn publications. have been collected from earlier publications of IEC TC 37,

77, 86 and CISPR.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: [e-mail].
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Catalogue IEC - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
Application autonome pour consulter tous les renseignements
Le premier dictionnaire en ligne de termes électroniques et
bibliographiques sur les Normes internationales,
électriques. Il contient plus de 30 000 termes et définitions en
Spécifications techniques, Rapports techniques et autres
anglais et en français, ainsi que les termes équivalents dans
documents de l'IEC. Disponible pour PC, Mac OS, tablettes
14 langues additionnelles. Egalement appelé Vocabulaire
Android et iPad.
Electrotechnique International (IEV) en ligne.

Recherche de publications IEC - www.iec.ch/searchpub
Glossaire IEC - std.iec.ch/glossary
Plus de 55 000 entrées terminologiques électrotechniques, en
La recherche avancée permet de trouver des publications IEC
en utilisant différents critères (numéro de référence, texte, anglais et en français, extraites des articles Termes et
comité d’études,…). Elle donne aussi des informations sur les Définitions des publications IEC parues depuis 2002. Plus
projets et les publications remplacées ou retirées. certaines entrées antérieures extraites des publications des

CE 37, 77, 86 et CISPR de l'IEC.
IEC Just Published - webstore.iec.ch/justpublished

Service Clients - webstore.iec.ch/csc
Restez informé sur les nouvelles publications IEC. Just
Published détaille les nouvelles publications parues. Si vous désirez nous donner des commentaires sur cette
Disponible en ligne et aussi une fois par mois par email. publication ou si vous avez des questions contactez-nous:
[e-mail].
ISO/IEC 24764
Edition 1.0 2014-04
INTERNATIONAL
STANDARD
AMENDMENT 1
Information technology – Generic cabling systems for data centres

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
B
ICS 35.200 ISBN 978-2-8891-0836-7

– 2 – ISO/IEC 24764:2010/AMD1:2014

© ISO/IEC 2014
FOREWORD
Amendment 1 to International Standard ISO/IEC 24764 was prepared by

subcommittee 25: Interconnection of information technology equipment, of ISO/IEC

joint technical committee 1: Information technology.

This International Standard has been approved by vote of the member bodies, and the

voting results may be obtained from the address given on the second title page.

© ISO/IEC 2014
Add, to the table of contents, the following new entries:

CONTENTS
INTRODUCTION to Amendment 1 . 4

Annex C (normative) Intermediate distribution cabling subsystem . 7

C.1 General . 7

C.2 General structure and hierarchy . 7

C.2.1 General. 7

C.3 Cabling subsystems . 8
C.3.1 Main distribution cabling subsystem . 8
C.3.2 Intermediate distribution cabling subsystem . 8
C.3.3 Redundancy . 8
C.4 Transmission performance . 9
C.4.1 Balanced cabling . 9
C.4.2 Optical fibre cabling . 10
C.5 Reference implementations . 10
C.5.1 Main distribution cabling . 10
C.5.2 Intermediate distribution cabling . 12
Annex D (informative) Combination of balanced cabling permanent links . 15
D.1 General . 15
D.2 Requirements . 15

Figure C.1 – Structure of generic cabling within a data centre . 7
Figure C.2 – Hierarchical structure of generic cabling within a data centre . 8
Figure C.3 – Connection of functional elements providing redundancy . 9
Figure C.4 – Main distribution cabling models . 10
Figure C.5 – Intermediate distribution cabling models . 12
Figure D.1 – Examples of combined permanent links . 15

Table C.1 – Length assumptions used in the mathematical modelling of balanced main
distribution cabling . 11
Table C.2 – Main distribution channel length equations . 11

Table C.3 – Length assumptions used in the mathematical modelling of balanced
intermediate distribution cabling . 13
Table C.4 – Intermediate distribution channel length equations . 13

– 4 – ISO/IEC 24764:2010/AMD1:2014

© ISO/IEC 2014
Add, at the end of the existing introduction, after Figure 1, the following text:

INTRODUCTION to Amendment 1
Amendment 1 of ISO/IEC 24764:2010 provides an introduction to the intermediate cabling

subsystem and an explanatory annex for the combination of several permanent links to form a

single transmission channel.
2 Normative references
Add, in the list of normative references, after reference ISO/IEC 11801, the following reference:
ISO/IEC 14763-2, Information technology – Implementation and operation of customer
premises cabling – Part 2: Planning and installation
3.1 Terms and definitions
Add, at the end of this subclause, the following new definitions:
3.1.13
equipment cord
cord connecting equipment to the equipment interfaces of generic cabling
3.1.14
equipment outlet
fixed connecting device for terminating the zone distribution cabling and providing the interface
to the equipment cord
3.1.15
intermediate distribution cable
cable connecting the intermediate distributor to the zone distributor
3.1.16
intermediate distributor
distributor used to make connections between the main distribution cabling subsystem,
intermediate distribution cabling subsystem, network access cabling subsystem and cabling
subsystems specified in ISO/IEC 11801 and active equipment

3.2 Abbreviations
Add, after the entry EO Equipment Outlet, the following new abbreviation:
ID Intermediate Distributor
ILD Insertion Loss Deviation
5 Structure of the generic cabling system
5.2 Functional elements
Add, after item i), the following new NOTE:

© ISO/IEC 2014
NOTE This standard includes additional functional elements, the intermediate distributor and the intermediate

distribution cable. The requirements for these functional elements are defined in Annex C.

5.3 General structure and hierarchy

Replace the entire third paragraph by the following new paragraph and NOTE:

The functions of multiple distributors may be combined, see 5.7.1.

NOTE This standard includes an additional cabling subsystem: the intermediate cabling subsystem. The

requirements for this additional cabling subsystem and the modifications to the cabling subsystems of this clause

are defined in Annex C.
Replace the existing Figure 2 by the following Figure:
EOEO
ENENII MDMD ZZDD LDLDPP
EQEQEQEQPPPP
DDiissttrriibutbutoror
iin acn acccorordancdancee
wwiitth Ih ISSOO//IIEECC 11801 11801 NNetetwwororkk ZZone dione dissttrriibutbutiionon EEquiquipmpmentent
MaiMain dn diissttrriibutbutiionon
aacceccesss s ccablabliing sng subsubsyyssttemem ccorordd
ccablabliingng
ccablabliingng
ssubsubsyyssttemem
ssubsubsyyssttemem
GGenereneriicc c cablabliing sng syyssttemem

5.6 Interfaces
5.6.2 Channels and links
Replace the existing second and third paragraphs by the following:
The channel is the transmission path between data centre equipment such as switches and
servers (EQP in Figure 5). A typical channel in a data centre would consist of the zone
distribution cabling subsystem together with an equipment cord at each end. For longer reach
services, the channel would be formed by the connection of two or more subsystems (including
patch cords and equipment cords), see Annex D. The performance of the channel excludes the

connections at the application-specific equipment.
The permanent link is the transmission path of the fixed cabling subsystem, including the
connecting hardware at the ends of the installed cable. In a data centre zone distribution
cabling subsystem, the permanent link consists of the EO, an optional LDP cable, an optional
LDP, the zone distribution cable and the termination of the zone distribution cable at the zone
distributor. The permanent link includes the connections at the ends of the installed cabling.
6 Channel performance
6.1 General
Replace the third paragraph including bulleted list by:
Channels are implemented using either:

– 6 – ISO/IEC 24764:2010/AMD1:2014

© ISO/IEC 2014
• network access cabling only;

• main distribution cabling only;

• zone distribution cabling only;

• a combination of the above, see Annex D.

Add, after Annex B, the following new Annexes C and D, and move the existing Bibliography

after these new Annexes:
...