ISO/IEC TR 11801-9911:2024

Information technology - Generic cabling for customer premises - Part 9911: Guidelines for the use of balanced single pair applications within a balanced 4-pair cabling system

ISO/IEC TR 11801-9911:2024, which is a Technical Report,
a) describes the rules of implementation of balanced single pair as described by ISO/IEC 11801-6:2017/AMD1:202x within a balanced 4- pair cabling system with a current carrying capacity of 0,75 A per conductor;
b) describes the use of components and cabling to implement and configure according to ISO/IEC 11801-6:2017/AMD1:202x
c) describes links and components for generic single pair channels according to ISO/IEC 11801-1:2017/AMD1:202x. Particular areas of interest are:
• remote powering according to IEEE Std 802.3, Clause 104
• loop resistance, max. current
• insertion loss
• return loss
• noise considerations
• frequency range requirements (low and high)
• length calculation of the SCP-Link-4-pair-cable
• number of channels
d) describes the use of application specific single pair channels in addition to ISO/IEC 11801:2017/AMD1:202x, 6.6.4
e) describes guidance on single pair remote powering applications when using 4-pair cabling with current carrying capacity specified
f) describes guidelines for planning, administration and installation

General Information

• Status: Published
• Publication Date: 04-Nov-2024
• ICS: 35.200 - Interface and interconnection equipment
• Technical Committee: ISO/IEC JTC 1/SC 25 - Interconnection of information technology equipment
• Drafting Committee: WG 3 - ISO/IEC JTC 1/SC 25/WG 3
• Current Stage: PPUB - Publication issued
• Start Date: 04-Oct-2024
• Completion Date: 05-Nov-2024

Standards Content (Sample)

ISO/IEC TR 11801-9911
Edition 1.0 2024-11
TECHNICAL
REPORT
colour
inside
Information technology – Generic cabling for customer premises –
Part 9911: Guidelines for the use of balanced single pair applications within
a balanced 4-pair cabling system

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ISO/IEC TR 11801-9911
Edition 1.0 2024-11
TECHNICAL
REPORT
colour
inside
Information technology – Generic cabling for customer premises –

Part 9911: Guidelines for the use of balanced single pair applications within

a balanced 4-pair cabling system

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 35.200 ISBN 978-2-8322-9937-1

– 2 – ISO/IEC TR 11801-9911:2024 © IEC 2024
CONTENTS
FOREWORD .4
INTRODUCTION .6
1 Scope .7
2 Normative references .7
3 Terms and definitions .7
4 Simultaneous operation of multiple single pair applications within an engineered
system that includes 4-pair cabling components in accordance with ISO/IEC
11801-1:2017 [2] .8
4.1 General .8
4.2 Creation of single pair cabling channels .8
4.3 Evaluation of the parameters that must be fulfilled by the shared SCP 4-pair
link .9
4.3.1 General .9
4.3.2 T1-A-100 .9
4.3.3 T1-A-400 and T1-A-1000 . 10
4.3.4 T1-B. 11
4.3.5 T1-C . 12
5 Guidance . 13
5.1 General . 13
5.2 Frequency range . 14
5.2.1 Lower frequency . 14
5.2.2 Upper or higher frequency . 14
5.3 Return loss . 14
5.4 Insertion loss . 15
5.5 Direct current (DC) loop resistance . 15
5.6 Direct current (DC) resistance unbalance . 15
5.7 Current carrying capacity . 15
5.8 Dielectric withstand . 16
5.9 Propagation delay . 16
5.10 Unbalance attenuation (TCL and ELTCTL) . 16
5.11 Coupling attenuation . 16
5.12 Alien crosstalk (PS ANEXT and PS AACR-F) . 16
5.13 Different disturbers . 17
5.14 Cables . 17
5.15 Connectors . 18
5.16 Installation . 18
5.17 Bonding . 18
5.18 Administration . 18
5.19 Supported applications . 18
5.20 Segregation of maximum 0,75 A cabling components from higher power
applications . 19
Bibliography . 20

Figure 1 – Structure and definition of an extended type B generic channel .8
Figure 2 – Return loss (RL) comparison between single pair and 4-pair cabling classes . 14

Figure 3 – Insertion loss (IL) comparison between ISO/IEC/IEEE 8802-3:2021/Amd
5:2021 [7] and cabling classes . 15
Figure 4 – Comparison between 4-pair and single pair link requirements in linear and
logarithmic scale . 17

Table 1 – Evaluation of a 4-pair SCP link for T1-A-100 .9
Table 2 – Allowed extension lengths for T1-A-1000 extensions based on 4-pair SCP
classes . 10
Table 3 – Allowed extension lengths for T1-A-400 extension based on 4-pair SCP
classes . 10
Table 4 – Evaluation of an 4-pair SCP link for T1-A-400 and T1-A-1000 . 11
Table 5 – Evaluation of a 4-pair SCP link for T1-B . 11
Table 6 – Evaluation of a 4-pair SCP link for T1-C . 12
Table 7 – Nominal cable DC loop resistance . 15
Table 8 – Support of single pair cabling classes by 4-pair cabling classes based on
alien crosstalk . 17
Table 9 – Support of single pair cabling classes by 4-pair cabling classes based on
IEEE Std 802.3dd [6] powering classes . 18

– 4 – ISO/IEC TR 11801-9911:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Information technology – Generic cabling for customer premises –
Part 9911: Guidelines for the use of balanced single pair applications
within a balanced 4-pair cabling system

FOREWORD
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ISO/IEC TR 11801-9911 has been prepared by subcommittee 25: Interconnection of information
technology equipment, of ISO/IEC joint technical committee 1: Information technology. It is a
Technical Report.
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 and
ISO websites.
The text of this Technical Report is based on the following documents:
DTR Report on voting
JTC1-SC25/3253/DTR JTC1-SC25/3282/RVDTR
Full information on the voting for the approval of this Technical R
...