Information technology -- Generic cabling systems for customer premises

ISO/IEC TR 11801-9907:2019(E), which is a Technical Report, provides definitions for, and examples of, direct attach cabling configurations. This document provides performance specifications for Classes D, E, EA, F, FA, I and II direct attach cabling by reference to ISO/IEC 11801-1. Informative limits for Class I direct attach cabling to support 5 m short reach mode application according to ISO/IEC/IEEE 8802 3:2017/AMD3, i.e. 25GBASE-T and 40GBASE-T, are provided in Annex A. Test methods will be provided in the second edition of ISO/IEC 14763-4. Direct attach cabling connects two pieces of equipment, it has connectors at each end, and no intermediate connecting hardware.

Technologies de l'information -- Câblage générique des locaux d'utilisateurs

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Status
Published
Publication Date
17-Jul-2019
Current Stage
6000 - International Standard under publication
Start Date
18-Jul-2019
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ISO/IEC TR 11801-9907
Edition 1.0 2019-07
TECHNICAL
REPORT
Information technology – Generic cabling for customer premises –
Part 9907: Specifications for direct attach cabling
ISO/IEC TR 11801-9907:2019-07(en)
---------------------- Page: 1 ----------------------
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ISO/IEC TR 11801-9907
Edition 1.0 2019-07
TECHNICAL
REPORT
Information technology – Generic cabling for customer premises –
Part 9907: Specifications for direct attach cabling
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 35.200 ISBN 978-2-8322-7195-7

Warning! Make sure that you obtained this publication from an authorized distributor.

---------------------- Page: 3 ----------------------
– 2 – ISO/IEC TR 11801-9907 © ISO/IEC 2019
CONTENTS

FOREWORD ........................................................................................................................... 4

INTRODUCTION ..................................................................................................................... 5

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 6

3 Terms, definitions, abbreviated terms and symbols .......................................................... 6

3.1 Terms and definitions .............................................................................................. 6

3.2 Abbreviated terms ................................................................................................... 7

3.3 Symbols .................................................................................................................. 7

4 Specifications .................................................................................................................. 7

5 Direct attach cabling configuration ................................................................................... 7

6 Performance specifications .............................................................................................. 8

6.1 General ................................................................................................................... 8

6.2 Return loss limits .................................................................................................... 8

6.3 Insertion loss limits ................................................................................................. 8

6.4 NEXT limits ............................................................................................................. 8

6.5 PS NEXT limits ....................................................................................................... 8

6.6 ACR-N limits ........................................................................................................... 8

6.7 PS ACR-N limits ..................................................................................................... 8

6.8 ACR-F limits ........................................................................................................... 8

6.9 PS ACR-F limits ...................................................................................................... 8

6.10 TCL limits ............................................................................................................... 8

6.11 ELTCTL limits ......................................................................................................... 8

6.12 Coupling attenuation ............................................................................................... 9

6.13 Alien crosstalk ........................................................................................................ 9

6.14 Direct current loop resistance ................................................................................. 9

6.15 Direct current resistance unbalance within a pair .................................................... 9

6.16 Propagation delay ................................................................................................... 9

6.17 Delay skew ............................................................................................................. 9

7 Direct attach cabling performance ................................................................................... 9

7.1 General ................................................................................................................... 9

7.2 Reference performance testing ............................................................................... 9

7.3 Installation performance testing ............................................................................ 10

7.4 Installation performance testing of direct attach cabling ........................................ 10

8 Testing of direct attach cabling ...................................................................................... 12

Annex A (informative) Short reach Class I direct attach channel transmission

performance .................................................................................................................. 13

A.1 General ................................................................................................................. 13

A.2 Short reach Class I direct attach cabling return loss .............................................. 13

A.3 Short reach Class I direct attach cabling insertion loss ......................................... 13

A.4 Short reach Class I direct attach cabling NEXT ..................................................... 13

A.5 Short reach Class I direct attach cabling PS NEXT ............................................... 14

A.6 Short reach Class I direct attach cabling ACR-F .................................................... 14

A.7 Short reach Class I direct attach cabling PS ACR-F .............................................. 15

A.8 Short reach Class I direct attach cabling propagation delay .................................. 15

A.9 Short reach Class I direct attach cabling delay skew ............................................. 15

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ISO/IEC TR 11801-9907 © ISO/IEC 2019 – 3 –

A.10 Short reach Class I direct attach cabling PS ANEXT ............................................. 15

A.11 Short reach Class I direct attach cabling PS AACR-F ............................................ 16

Bibliography .......................................................................................................................... 17

Figure 1 – Direct attach cabling .............................................................................................. 7

Table 1 – Test regime for reference performance and installation performance – Direct

attach cabling of Classes D, E, E , F, F , I, II ...................................................................... 11

A A

Table A.1 – Short reach Class I direct attach cabling return loss ........................................... 13

Table A.2 – Short reach Class I direct attach cabling insertion loss ....................................... 13

Table A.3 – Short reach Class I direct attach cabling NEXT .................................................. 14

Table A.4 – Short reach Class I direct attach cabling PS NEXT ............................................ 14

Table A.5 – Short reach Class I direct attach cabling ACR-F ................................................. 14

Table A.6 – Short reach Class I direct attach cabling PS ACR-F ........................................... 15

Table A.7 – Short reach Class I direct attach cabling propagation delay ............................... 15

Table A.8 – Short reach Class I direct attach cabling PS NEXT ............................................ 16

Table A.9 – Short reach Class I direct attach cabling PS AACR-F ......................................... 16

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– 4 – ISO/IEC TR 11801-9907 © ISO/IEC 2019
INFORMATION TECHNOLOGY –
GENERIC CABLING FOR CUSTOMER PREMISES –
Part 9907: Specifications for direct attach cabling
FOREWORD

1) 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.

2) The formal decisions or agreements of IEC and ISO on technical matters express, as nearly as possible, an

international consensus of opinion on the relevant subjects since each technical committee has representation

from all interested IEC National Committees and ISO member bodies.

3) IEC, ISO and ISO/IEC publications have the form of recommendations for international use and are accepted

by IEC National Committees and ISO member bodies in that sense. While all reasonable efforts are made to

ensure that the technical content of IEC, ISO and ISO/IEC publications is accurate, IEC or ISO cannot be held

responsible for the way in which they are used or for any misinterpretation by any end user.

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6) All users should ensure that they have the latest edition of this publication.

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publication or any other IEC, ISO or ISO/IEC publications.

8) Attention is drawn to the normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this ISO/IEC publication may be the subject of

patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.

The main task of IEC and ISO technical committees is to prepare International Standards.

However, a technical committee may propose the publication of a Technical Report when it

has collected data of a different kind from that which is normally published as an International

Standard, for example "state of the art".

ISO/IEC TR 11801-9907, which is a Technical Report, was prepared by subcommittee 25:

Interconnection of information technology equipment, of ISO/IEC joint technical committee 1:

Information technology.

The list of all currently available parts of the ISO/IEC 11801 series, under the general title

Information technology – Generic cabling for customer premises, can be found on the IEC

website.
The text of this Technical Report is based on the following documents:
DTR Report on voting
JTC1-SC25/2841/DTR JTC1-SC25/2863/RVDTR

Full information on the voting for the approval of this Technical Report can be found in the

report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

A bilingual version of this document may be issued at a later date.
---------------------- Page: 6 ----------------------
ISO/IEC TR 11801-9907 © ISO/IEC 2019 – 5 –
INTRODUCTION

This document provides definitions and examples of direct attach cabling. It provides

performance specifications for Classes D, E, E , F, F , I and II direct attach cabling that can

A A

also be used to verify terminating connectors. Performance verification for direct attach

cabling will be specified in the second edition of ISO/IEC 14763-4.
---------------------- Page: 7 ----------------------
– 6 – ISO/IEC TR 11801-9907 © ISO/IEC 2019
INFORMATION TECHNOLOGY –
GENERIC CABLING FOR CUSTOMER PREMISES –
Part 9907: Specifications for direct attach cabling
1 Scope

This part of ISO/IEC 11801, which is a Technical Report, provides definitions for, and

examples of, direct attach cabling configurations.

This document provides performance specifications for Classes D, E, E , F, F , I and II direct

A A
attach cabling by reference to ISO/IEC 11801-1.

Informative limits for Class I direct attach cabling to support 5 m short reach mode application

according to ISO/IEC/IEEE 8802-3:2017/AMD3, i.e. 25GBASE-T and 40GBASE-T, are
provided in Annex A.
Test methods will be provided in the second edition of ISO/IEC 14763-4.

NOTE ISO/IEC 14763-4 is the test method for End to End (E2E) link. It can be also used for direct attach cabling.

Test methods for Classes E , F, F , I, II will be provided in the second edition of ISO/IEC 14763-4.

A A

Direct attach cabling connects two pieces of equipment, it has connectors at each end, and no

intermediate connecting hardware.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their

content constitutes requirements of this document. For dated references, only the edition

cited applies. For undated references, the latest edition of the referenced document (including

any amendments) applies.
ISO/IEC 11801-1, Information
...

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