ISO/IEC 11801:1995

Information technology -- Generic cabling for customer premises

Specifies generic cabling for use within commercial premises, which may comprise single or multiple buildings on a campus. Specifies: the structure and miniumum configuration for generic cabling; implementation requirements; performance requirements for individual cabling links and conformance requirements and verification procedures.

General Information

• Status: Published
• Publication Date: 30-Jan-2000
• 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: 01-Oct-2002

Relations

• Amended By: ISO/IEC 11801:1995/AMD2:1999 - Amendment 2 - Information technology - Generic cabling for customer premises
• Effective Date: 05-Sep-2023
• Amended By: ISO/IEC 11801:1995/AMD1:1999 - Amendment 1 - Information technology - Generic cabling for customer premises
• Effective Date: 05-Sep-2023
• Revised: ISO/IEC 11801:2002 - Information technology - Generic cabling for customer premises
• Effective Date: 05-Sep-2023

Standards Content (Sample)

INTERNATIONAL STANDARD ISO/IEC 11801: 1995
TECHNICAL CORRIGENDUM 1
Published 1996-l 2-l 5
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION l MEWYHAPOflHAfl OPrAHM3AlJM~ IlO CTAHJJAPTM3Al&lM . ORGANISATION INTERNATIONALE DE NORMALISATION
0 co~Mlssl0~ ~LECTR~TECHN~OUE ~NTERNATIONALE
INTERNATIONAL ELECTROTECHNICAL COMMISSION l ME>KLIYHAPOJJHAfl 3JlEKTPOTEXHWiECKAfl KOMLlCCMR
Information technology - Generic cabling for customer
premises
TECHNICAL CORRIGENDUM 1
Cab/age g&Grique des locaux d ‘utilisa teurs
Technologies de I ’information -
RECTIFICATIF TECHNIQUE 7
Technical Corrigendum 1 to International Standard lSO/IEC 11801 :I995 was prepared by Joint Technical
Committee lSO/IEC JTC 1, Information technology, Subcommittee SC 25, Interconnection of information
technology equipment.
Page 20
Subclause 6.1.3
Replace the NOTE by the following:
NOTE - See 9.2.5, 9.3.5 and 9.4.4 for TO requirements that correspond to each of the cables listed above.
Page 24
Subclause 7.1.2
Replace the last paragraph by the following:
Table 2 relates the link classes to the categories of clauses 8 and 9. This table indicates the channel length over which the
various applications may be supported.
KS 35.200 Ref. No. SSO/IEC l1801:1995/Cor.l:1996(E)
Descriptors: data processing, information interchange, data transmission, buildings, communication cables, specifications,
performance, verification, business and commercial buildings.
0 ISO/IEC 1996
Printed in Switzerland
ISO/IEC 11801: 199YCor.l: 1996(E)
0 ISO/IEC
Page 26
Subclause 7.2.2
Replace table 3 by the following:
Table 3 - Minimum return loss at each cabling interface
Frequency - -
MHz / ,:, 17;: D
1 If 8 (f.f.s.) 1 18 (f.f.s.)
l lO I I
46rf<20 N/A 15 (f.f.S.)
I I
10 (f.f.s.)
20If I I
Page 29
Subclause 7.2.8
Replace table 9 by the following:
Table 9 - Longitudinal to differential conversion loss
Minimum longitudinal to differential conversion loss
Frequency
dB
MHz
r
Class A Class B Class C Class D
r
01 30 45 35 40
I
10 N/A 20 30 40
I
40 N/A N/A f.f.s. f.f.s.
I
IO,
...

INTERNATIONAL STANDARD ISO/IEC 11801 :I 995
TECHNICAL CORRIGENDUM 2
Published 1997-06-I 5
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION l MEJKjJYHAPOjJHAfl OPrAHM3AlJMfl IlO CTAHCV\PTM3ALjMM l ORGANISATION INTERNATIONALE DE NORMALISATION
INTERNATIONAL ELECTROTECHNICAL COMMISSION l ME2WHAPOjIlHAR 3JlEKTPOTEXHWECKAfi KOMMCCMf ’i l COMMISSION ~LECTROTECHNIOUE ~NTERNAT~ONALE
Information technology - Generic cabling for customer
premises
TECHNICAL CORRIGENDUM 2
Technologies de / ‘information - Gblage g&Grique des locaux d ’utilisa teurs
RECTIFICA T/F TECHNIQUE 2
Technical Corrigendum 2 to International Standard ISO/IEC 11801:1995 was prepared by Joint Technical
Committee ISO/IEC JTC 1, information technology, Subcommittee SC 25, interconnection of information technology
equipment.
Page 15
Subclause 5.5.3
Replace paragraph 3 by the following:
A minimum of one TO served by 100 a or 120 a cable shall be provided at each work area ’) (100 Sz
preferred). Other TOs shall be supported by either balanced cable or by fibre optical cable. In the
horizontal cabling, at least one TO shall be configured as specified in item b of 6.1.3 (balanced or
optical fibre cable) or at least one TO shall be served by either class D or optical class, as identified in
7.1 .l . When a TO is supported by balanced cable, 2 pairs*) or 4 pairs shall be provided at each TO; all
pairs shall be terminated. If less than four pairs are provided, the outlet shall be clearly marked3!
Emerging balanced cable applications may be limited by differential delay of pairs that serve a single
telecommunications outlet. See clause 9 for TO specifications that correspond to each of the cables
listed above.
ICS 35.200 Ref. No. lSO/IEC 11801:1995/Cor.2:1997(E)
Descriptors: data processing, information interchange, telecommunications,
buildings, premises, communication cables, cabling,
specifications, performance, verification.
0 ISO/lEC 1997
Printed in Switzerland
@ ISOAEC
ISOAEC II 1801: 1995Kor.2: 1997(E)
Page 25
Subclaus
...

ISO/IEC 11801
Edition 1.0 1995-05
INTERNATIONAL
STANDARD
Information technology – Generic cabling for customer premises

Copyright © 1995 ISO/IEC, Geneva, Switzerland

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ISO/IEC 11801
Edition 1.0 1995-05
INTERNATIONAL
STANDARD
Information technology – Generic cabling for customer premises

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 35.200
Contents
Foreword . viii
Introduction . ix
1 Scope . 1
2 Normative references . 2
3 Definitions and abbreviations . 4
3.1 Definitions . 4
3.2 Abbreviations . 7
4 Conformance . 8
5 Structure of the generic cabling system . 9
5.1 Structure . 9
5.1.1 Functional elements . 9
5.1.2 Cabling subsystems . 9
5.1.3 Campus backbone cabling subsystem . 10
5.1.4 Building backbone cabling subsystem . 10
5.1.5 Horizontal cabling subsystem . 10
5.1.6 Work area cabling . 10
5.2 Overall structure . 11
5.3 Location of distributors . 13
5.4 Interfaces to the generic cabling system . 14
5.4.1 Public network interface . 14
5.5 Dimensioning and configuring . 15
5.5.1 Floor distributor . 15
5.5.2 Preferred cable types for pre-cabling and recommended use . 15
5.5.3 Telecommunications outlets . 15
5.5.4 Telecommunications closets and equipment rooms . 16
5.5.5 Building entrance facilities . 16
5.6 Electromagnetic compatibility . 16
5.7 Earthing and bonding . 16
6 Implementation . 17
6.1 Horizontal cabling . 18
6.1.1 Horizontal distances . 18
6.1.2 Choosing cable types . 19
6.1.3 Configuring TOs . 20
6.2 Backbone cabling . 21
6.2.1 Physical topology . 21
6.2.2 Choosing cable types . 21
6.2.3 Backbone cabling distances . 22
7 Link specifications . 23
7.1 Classification of applications and links . 24
7.1.1 Application classification . 24
7.1.2 Link classification . 24
7.2 Balanced cabling links . 25
7.2.1 Characteristic impedance . 25
7.2.2 Return loss . 26
7.2.3 Attenuation . 26
ii
7.2.4 Near-end crosstalk loss . 27
7.2.5 Attenuation to crosstalk loss ratio . 27
7.2.6 DC resistance . 28
7.2.7 Propagation delay . 29
7.2.8 Longitudinal to differential conversion loss (balance) . 29
7.2.9 Transfer impedance of shield . 29
7.3 Optical fibre links . 30
7.3.1 Optical attenuation . 30
7.3.2 Multimode modal bandwidth . 31
7.3.3 Return loss . 31
7.3.4 Propagation delay . 31
8 Cable requirements . 32
8.1 General requirements for 100 Ω and 120 Ω balanced cable . 33
8.1.1 Additional requirements for 100 Ω balanced cable . 35
8.1.2 Additional requirements for 120 Ω balanced cable . 36

8.2 General requirements for 150 Ω balanced cable . 37
8.3 Additional crosstalk considerations for balanced cables . 39
8.3.1 Power summation . 39
8.3.2 Hybrid and multi-unit cables and cables connected to multiple TOs . 39
8.4 Multimode optical fibre cables . 40
8.5 Singlemode optical fibre cables . 40
9 Connecting hardware requirements . 41
9.1 General requirements . 41
9.1.1 Location . 41
9.1.2 Design . 42
9.1.3 Operating environment . 42
9.1.4 Mounting . 42
9.1.5 Cross-connect jumpers and patch cords . 42
9.1.6 Installation practices . 43
9.1.7 Marking and colour coding. 43
9.2 Connecting hardware for 100 Ω and 120 Ω cabling . 43
9.2.1 General requirements . 43
9.2.2 Performance marking . 44
9.2.3 Mechanical characteristics . 44
9.2.4 Electrical characteristics . 45
9.2.5 Telecommunications outlet requirements . 46
9.2.6 Installation practices . 46
9.3
...

INTERNATIONAL ISO/IEC
STANDARD
Edition 1.2
2000-01
Edition 1:1995 consolidated with amendments 1:1999 and 2:1999
Information technology –
Generic cabling for customer premises
Technologies de l'information –
Câblage générique des locaux d'utilisateurs

Reference number
INTERNATIONAL ISO/IEC
STANDARD
Edition 1.2
2000-01
Edition 1:1995 consolidated with amendments 1:1999 and 2:1999
Information technology –
Generic cabling for customer premises
Technologies de l'information –
Câblage générique des locaux d'utilisateurs

 ISO/IEC 2000
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 the publisher.
ISO/IEC Copyright Office Case postale 56 CH-1211 Genève 20 Switzerland
• • •
PRICE CODE
XA
For price, see current catalogue

– ii – ISO/IEC 11801:1995
+A1:1999+A2:1999(E)
CONTENTS
Page
FOREWORD .ix

INTRODUCTION .x

Clause
1 Scope . 1

2 Normative references . 2

3 Definitions and abbreviations. 4
3.1 Definitions. 4
3.2 Abbreviations . 8
4 Conformance . 9
5 Structure of the generic cabling system . 10
5.1 Structure. 10
5.1.1 Functional elements . 10
5.1.2 Cabling subsystems . 10
5.1.3 Campus backbone cabling subsystem . 11
5.1.4 Building backbone cabling subsystem. 11
5.1.5 Horizontal cabling subsystem . 11
5.1.6 Work area cabling . 11
5.2 Overall structure . 12
5.3 Location of distributors . 14
5.4 Interfaces to the generic cabling system . 15
5.4.1 Public network interface . 15
5.5 Dimensioning and configuring. 16
5.5.1 Floor distributor. 16
5.5.2 Preferred cable types for pre-cabling and recommended use . 16
5.5.3 Telecommunications outlets . 16
5.5.4 Telecommunications closets and equipment rooms. 17
5.5.5 Building entrance facilities . 17
5.6 Electromagnetic compatibility . 17
5.7 Earthing and bonding . 17
6 Implementation . 18

6.1 Horizontal cabling . 19
6.1.1 Horizontal distances . 19
6.1.2 Choosing cable types . 20
6.1.3 Configuring TOs . 20
6.2 Backbone cabling. 21
6.2.1 Physical topology . 21
6.2.2 Choosing cable types . 22
6.2.3 Backbone cabling distances . 22

+A1:1999+A2:1999(E)
7 Permanent link and channel specifications. 23

7.1 Permanent links and channels. 23

7.1.1 General. 23

7.1.2 Permanent links . 24

7.1.3 Channels. 24

7.2 Classification of applications, links and channels . 26

7.2.1 Application classification . 26

7.2.2 Link and channel classification . 27

7.3 Balanced cabling permanent links and channels . 28

7.3.1 General. 28
7.3.2 Nominal impedance. 28
7.3.3 Return loss. 28
7.3.4 Attenuation (insertion loss) . 29
7.3.5 NEXT loss. 30
7.3.6 Attenuation of crosstalk loss ratio . 31
7.3.7 ELFEXT . 33
7.3.8 DC loop resistance . 35
7.3.9 Propagation delay . 35
7.3.10 Delay skew. 36
7.3.11 Longitudinal to differential conversion loss (balance) . 36
7.3.12 Transfer impedance of shield . 37
7.4 Optical fibre permanent links/channels . 37
7.4.1 General. 37
7.4.2 Optical attenuation . 37
7.4.3 Multimode modal bandwidth . 38
7.4.4 Return loss. 38
7.4.5 Propagation delay . 38
8 Cable requirements . 39
8.1 General requirements for 100 Ω and 120 Ω balanced cable . 39
8.1.1 Additional requirements for 100 Ω balanced cable . 41
8.1.2 Additional requirements for 120 Ω balanced cable . 42
8.2 General requirements for 150 Ω balanced cable . 42
8.3 Additional crosstalk considerations for balanced cables . 44
8.3.1 Power summation. 44
8.3.2 Hybrid and multi-unit cables and cables connected to multiple TOs. 44

8.4 Multimode optical fibre cables . 45
8.5 Singlemode optical fibre cables . 45
9 Connecting hardware requirements . 46
9.1 General requirements. 46
9.1.1 Location . 46
9.1.2 Design . 46
9.1.3 Operating environment . 47
9.1.4 Mounting . 47
9.1.5 Cross-connect jumpers and patch cords . 47
9.1.6 Installation practices. 47
9.1.7 Marking and colour coding. 48
9.2 Connecting hardware for 100 Ω and 120 Ω cabling . 48
9.2.1 General requirements. 48
9.2.2 Performance marking . 48

– iv – ISO/IEC 11801:1995
+A1:1999+A2:1999(E)
9.2.3 Mechanical characteristics. 48

9.2.4 Electrical characteristics. 49

9.2.5 Telecommunications outlet requirements . 50

9.2.6 Installation practices. 51

9.3 Connecting hardware for 150 Ω cabling . 51

9.3.1 General requirements. 51

9.3.2 Performance marking . 51

9.3.3 Mechanical characteristics. 51

9.3.4 Electrical characteristics. 52

9.3.5 Telecommunications outlet requirements . 53

9.3.6 Installation practices. 53
9.4 Optical fibre connecting hardware . 54
9.4.1 General requirements. 54
9.4.2 Marking and colour coding. 54
9.4.3 Mechanical and optical characteristics. 54
9.4.4 Telecommunications outlet requirements . 55
9.4.5 Cross-connect jumpers and patch cords . 55
9.4.6 Optical fibre connectivity. 55
10 Shielding practices . 55
10.1 EMC . 55
10.2 Grounding. 56
11 Administration .56
11.1 Scope of administration. 56
11.2 Identifiers. 56
11.3 Records . 57
11.3.1 Documentation . 57
Annexes
A Test procedures . 58
A.1 Link performance testing . 58
A.1.1 Testing balanced cabling links . 58
A.1.2 Testing optical fibre cabling links . 60
A.1.3 Link tests . 62
A.2 Transmission testing of connecting hardware for balanced cabling. 62
A.2.1 Purpose and scope.
...