ISO/IEC 11801-1:2017

ISO/IEC 11801-1
Edition 1.0 2017-11
INTERNATIONAL
STANDARD
Information technology – Generic cabling for customer premises –
Part 1: General requirements
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ISO/IEC 11801-1
Edition 1.0 2017-11
INTERNATIONAL
STANDARD
Information technology – Generic cabling for customer premises –

Part 1: General requirements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 35.200 ISBN 978-2-8322-5050-1

– 2 – ISO/IEC 11801-1:2017 © ISO/IEC 2017
CONTENTS
FOREWORD . 11
INTRODUCTION . 13
1 Scope . 15
2 Normative references . 15
3 Terms, definitions, abbreviations and symbols . 20
3.1 Terms and definitions . 20
3.2 Abbreviations . 27
3.3 Symbols . 29
3.3.1 Variables . 29
3.3.2 Indices . 30
4 Conformance . 30
5 Structure of generic cabling . 31
5.1 Functional elements . 31
5.2 Interfaces . 32
5.3 Cabling subsystems . 32
5.3.1 Cabling subsystem 1 . 32
5.3.2 Cabling subsystems n ≥ 2 . 33
5.3.3 Common subsystems . 33
5.3.4 Tie cabling . 34
5.3.5 Channel and permanent link . 34
6 Channel performance requirements . 34
6.1 General . 34
6.2 Environmental performance . 34
6.2.1 General . 34
6.2.2 Environmental classification. 35
6.3 Balanced cabling transmission performance . 37
6.3.1 General . 37
6.3.2 Component choice . 38
6.3.3 Channel parameters . 38
6.4 Coaxial cabling transmission performance . 64
6.4.1 General . 64
6.4.2 Component choice . 65
6.4.3 Channel parameters . 65
6.5 Optical fibre cabling transmission performance . 67
6.5.1 Component choice . 67
6.5.2 Channel parameters . 67
7 Link performance requirements . 67
7.1 General . 67
7.2 Balanced cabling . 68
7.2.1 General . 68
7.2.2 Return loss . 69
7.2.3 Insertion loss/attenuation . 70
7.2.4 NEXT . 72
7.2.5 Attenuation to crosstalk ratio at the near-end . 76
7.2.6 Attenuation to crosstalk ratio at the far-end . 78

7.2.7 Direct current loop resistance . 82
7.2.8 Direct current resistance unbalance . 83
7.2.9 Propagation delay . 83
7.2.10 Delay skew . 84
7.2.11 Unbalance attenuation and coupling attenuation . 86
7.2.12 Alien crosstalk . 89
7.3 Coaxial cabling . 94
7.3.1 General . 94
7.3.2 Return loss . 94
7.3.3 Insertion loss . 94
7.3.4 Direct current loop resistance . 95
7.3.5 DC current carrying capacity . 95
7.3.6 Screening attenuation . 95
7.4 Optical fibre cabling . 95
8 Reference implementation for backbone cabling subsystems . 96
8.1 General . 96
8.2 Balanced cabling . 96
8.2.1 Component choice . 96
8.2.2 Dimensions . 96
8.3 Optical fibre cabling . 97
8.3.1 General . 97
8.3.2 Component selection . 98
8.3.3 Dimensions . 98
9 Cable requirements . 98
9.1 General . 98
9.2 Operating environment . 98
9.3 Balanced cables . 98
9.3.1 Basic requirements . 98
9.3.2 Balanced cables of Category 5 through 7 , 8.1 and 8.2 . 99
A
9.3.3 Balanced cables of Category BCT-B . 101
9.4 Coaxial cables . 103
9.4.1 General . 103
9.4.2 Environmental characteristics . 103
9.4.3 Mechanical characteristics . 103
9.4.4 Electrical characteristics . 104
9.5 Optical fibre cable (cabled optical fibres) . 104
9.5.1 Mechanical and environmental characteristics . 104
9.5.2 Cabled optical fibre Categories . 105
10 Connecting hardware requirements . 106
10.1 General requirements . 106
10.1.1 Overview . 106
10.1.2 Location . 106
10.1.3 Design . 106
10.1.4 Operating environment . 107
10.1.5 Mounting . 109
10.1.6 Installation practices . 109
10.1.7 Marking and colour coding . 110

– 4 – ISO/IEC 11801-1:2017 © ISO/IEC 2017
10.2 Category 5 through 7 , 8.1, and 8.2 connecting hardware for balanced
A
cabling .
...