ISO/IEC 11801-4:2017

ISO/IEC 11801-4
Edition 1.0 2017-11
INTERNATIONAL
STANDARD
Information technology – Generic cabling for customer premises
Part 4: Single-tenant homes
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ISO/IEC 11801-4
Edition 1.0 2017-11
INTERNATIONAL
STANDARD
Information technology – Generic cabling for customer premises

Part 4: Single-tenant homes
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 35.200 ISBN 978-2-8322-5035-8

– 2 – ISO/IEC 11801-4:2017 © ISO/IEC 2017
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 9
2 Normative references . 9
3 Terms, definitions and abbreviated terms . 9
3.1 Terms and definitions . 9
3.2 Abbreviated terms . 10
4 Conformance . 11
5 Structure of the generic cabling system . 11
5.1 General . 11
5.2 Functional elements . 12
5.3 Cabling subsystems for ICT and BCT . 12
5.3.1 General . 12
5.3.2 Primary home cabling subsystem . 14
5.3.3 Secondary home cabling subsystem . 14
5.4 Cabling structure . 14
5.5 Interfaces . 15
5.5.1 Equipment interfaces and test interfaces . 15
5.5.2 Channel and permanent link . 16
5.5.3 Network access cabling . 17
5.5.4 External network interface . 18
5.6 Accommodation of functional elements . 18
5.6.1 General . 18
5.6.2 Coverage areas . 19
5.6.3 Dimensioning and configuring . 20
5.6.4 Connecting hardware . 21
5.6.5 Application outlets . 21
5.6.6 Equipment cords . 21
6 Channel performance requirements . 22
6.1 General . 22
6.2 Environmental performance . 22
6.3 Transmission performance . 22
6.3.1 Channel construction . 22
6.3.2 Balanced cabling . 22
6.3.3 Coaxial cabling . 23
6.3.4 Optical fibre cabling . 23
7 Link performance requirements . 23
7.1 General . 23
7.2 Balanced cabling . 23
7.3 Coaxial cabling . 23
7.4 Optical fibre cabling . 23
8 Reference implementations . 23
8.1 General . 23
8.2 Channel construction . 24
8.3 Balanced cabling . 24
8.3.1 General . 24

8.3.2 ICT channels . 25
8.3.3 BCT channels . 25
8.4 Coaxial cabling . 26
8.5 Optical fibre cabling . 26
8.5.1 General . 26
8.5.2 Component selection . 26
8.5.3 Dimensions . 26
9 Cable requirements . 26
9.1 General . 26
9.2 Balanced cables . 27
9.2.1 ICT cabling . 27
9.2.2 BCT cabling . 27
9.3 Coaxial cables . 27
9.4 Optical fibre cables . 27
10 Connecting hardware requirements . 27
10.1 General requirements . 27
10.2 Connecting hardware for balanced cabling . 27
10.2.1 General requirements . 27
10.2.2 Electrical, mechanical and environmental performance . 27
10.3 Connecting hardware for coaxial cabling . 28
10.3.1 General requirements . 28
10.3.2 Electrical, mechanical and environmental performance . 28
10.4 Connecting hardware for optical fibre cabling . 28
10.4.1 General requirements . 28
10.4.2 Optical, mechanical and environmental performance . 28
11 Cords . 28
11.1 Jumpers . 28
11.2 Balanced cords . 28
11.3 Coaxial cords . 28
11.4 Optical fibre cords . 28
Annex A (informative) Reference implementation of TV and radio applications – use
of baluns . 29
A.1 Types and locations of baluns . 29
A.1.1 General . 29
A.1.2 Baluns at the ENI and baluns at the equipment interface toward the
PHD . 29
A.1.3 Baluns near or in the BO . 30
A.1.4 Baluns in the cord between BO and the terminal equipment . 31
A.2 Home network interface . 31
Bibliography . 33

Figure 1 – Relationships between the generic cabling documents produced by
ISO/IEC JTC 1/SC 25 . 7
Figure 2 – Structure of the generic cabling system . 12
Figure 3 – Interconnect and cross-connect models . 13
Figure 4 – Interconnect and cross-connects at the PHD . 13
Figure 5 – Hierarchical structure of a generic cabling system in support of ICT and
BCT applications . 14

– 4 – ISO/IEC 11801-4:2017 © ISO/IEC 2017
Figure 6 – Equipment and test interfaces in support of ICT and BCT applications . 16
Figure 7 – Channels and permanent links within the home . 17
Figure 8 – Examples of interconnection of home and network access cabling . 18
Figure 9 – Overview of a generic cabling for home . 19
Figure 10 – Interconnection of home cabling subsystems . 20
Figure 11 – Reference implementations for ICT and BCT channels (PHD/SHD to
TO/BO) . 24
Figure A.1 – Balun at the ENI . 29
Figure A.2 – Baluns in the PHD . 30
Figure A.3 – Balun built into the system outlet . 30
Figure A.4 – Balun in the cord between BO and the TE . 31
Figure A.5 – Types of HNI . 32

Table 1 – Maximum channel lengths for reference implementations of ICT/BCT
channels . 21
Table 2 – Link length equations . 25
Table A.1 – Insertion loss and total sectional slope . 32

INFORMATION TECHNOLOGY –
GENERIC CABLING FOR CUSTOMER PREMISES

Part 4: Single-tenant homes
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
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3) IEC, ISO and ISO/IEC publications have the form of recommendations for international use and are accepted
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responsible for the way in which they are used or for any misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees and ISO member bodies undertake to
apply IEC, ISO and ISO/IEC publications transparently to the maximum extent possible in their national and
regional publications. Any divergence between any ISO, IEC or ISO/IEC publication and the corresponding
national or regional publication should be clearly indicated in the latter.
5) ISO and IEC do not provide any attestation of conformity. Independent certification bodies provide conformity
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6) All users should ensure that they have the latest edition of this publication.
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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.
International Standard ISO/IEC 11801-4 was prepared by subcommittee 25: Interconnection
of information technology equipment, of ISO/IEC joint technical committee 1: Information
technology.
This first edition cancels and replaces ISO/IEC 15018:2004 and Amendment 1:2009. This
edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) standard re-structured to contain only those requirements that are specific for generic
cabling systems installed in homes;
b) the channel performance Class CCCB and related reference implementations have been
deleted and are now addressed as distributed building services in ISO/IEC 11801-6;
c) implementation options now include optical fibre in addition to balanced and coaxial
media.
ISO/IEC 11801-4 is to be read in conjunction with ISO/IEC 11801-1.

– 6 – ISO/IEC 11801-4:2017 © ISO/IEC 2017
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.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the ISO/IEC 11801 series, published under the general title Information
technology – Generic cabling for customer premises, can be found on the IEC website.

INTRODUCTION
The importance of cabling infrastructure is similar to that of other fundamental utilities such as
water and energy supply and interruptions to the services provided over that infrastructure
can have a serious impact. A lack of design foresight, the use of inappropriate components,
incorrect installation, poor administration or inadequate support can threaten quality of service
and have commercial consequence for all types of users.
This document specifies generic cabling within a home.
The home can contain one or more buildings (e.g. farm) or be within a building which contains
more than one home (e.g. one home in a multi-tenant building).
The campus or backbone cabling connecting individual homes within multi-tenant premises is
specified according to the relevant standard (for instance ISO/IEC 11801-1 or IEC 60728).
Generic cabling for distributed building services in homes is specified in ISO/IEC 11801-6,
which addresses all of the above premises and spaces within them.
Figure 1 shows the schematic and contextual relationships between the standards relating to
information technology cabling produced by ISO/IEC JTC 1/SC 25, namely the ISO/IEC 11801
series of standards for generic cabling design, standards for the installation, operation and
administration of generic cabling and for testing of installed generic cabling.
IEC
Figure 1 – Relationships between the generic cabling
documents produced by ISO/IEC JTC 1/SC 25
The generic cabling specified by this document provides users with
a) an application independent system capable of supporting a wide range of applications in a
range of installation and operating environments,
b) a flexible scheme such that modifications are both easy and economical,
c) a multi-vendor supply chain within an open market for cabling components.
In addition, this document provides

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d) relevant industry professionals with guidance allowing the accommodation of cabling
before specific requirements are known, i.e. in the initial planning either for construction or
refurbishment and for further deployment as the requirements of areas are defined,
e) industry and standardization bodies with a cabling system which supports current products
and provides a basis for future product development and applications standardization,
f) users, designers and manufacturers of application-specific cabling systems with advice on
interfacing to this generic cabling,
g) suppliers of cabling components and installers of cabling with relevant requirements,
h) service providers with a distribution system for their services.
Applications addressed in this document include those developed by the technical committees
of IEC (including the subcommittees of ISO/IEC JTC 1) and study groups of ITU-T as used to
support the following services:
• information and communications technologies (ICT),
• broadcast and communications technologies (BCT).
This document also applies where cabling is designed to support only one of the services
listed above.
Physical layer requirements for the applications listed in Annex E of ISO/IEC 11801-1:2017
have been analysed to determine their compatibility with the cabling performance specified in
this document and, together with statistics concerning premises geography from different
countries and the models described in Clause 6, have been used to develop the requirements
for cabling components and to stipulate their arrangement into cabling systems.
As a result, this document
1) specifies a structure for generic cabling supporting a wide variety of applications
including, but not restricted to, the applications in ISO/IEC 11801-1:2017, Annex E,
2) adopts balanced cabling channel and link Classes D, E, E , F, F and BCT-B specified in
A A
ISO/IEC 11801-1,
3) adopts coaxial cabling channel and link Classes BCT-C specified in ISO/IEC 11801-1,
4) adopts optical fibre cabling channel and link requirements specified in ISO/IEC 11801-1,
5) adopts component requirements, specified in ISO/IEC 11801-1, and specifies cabling
implementations that ensure performance of permanent links and of channels that meet or
exceed the requirements of a specified group (e.g. Class) of applications.
Life expectancy of generic cabling systems can vary depending on environmental conditions,
supported applications, aging of materials used in cables, and other factors such as access to
pathways (campus pathways are more difficult to access than building pathways). With
appropriate choice of components, generic cabling systems meeting the requirements of this
document are expected to have a life expectancy of at least ten years.
This document has taken into account requirements specified in application standards listed
in ISO/IEC 11801-1:2017, Annex E. It refers to International Standards for components and
test methods whenever appropriate International Standards are available.

INFORMATION TECHNOLOGY –
GENERIC CABLING FOR CUSTOMER PREMISES

Part 4: Single-tenant homes
1 Scope
This part of ISO/IEC 11801 specifies generic cabling for single-tenant homes. A home can
contain one or more buildings or can be within a building that contains more than one home. It
covers balanced cabling, optical fibre cabling and coaxial cabling.
This document specifies a generic cabling for two groups of applications:
1) information and communications technologies (ICT),
2) broadcast and communications technologies (BCT).
This document specifies directly or via reference to ISO/IEC 11801-1
a) the structure and minimum configuration for generic cabling within homes,
b) the interfaces at the telecommunications outlet (TO) and broadcast outlet (BO),
c) the performance requirements for cabling links and channels,
d) the implementation requirements and options,
e) the performance requirements for cabling components,
f) the conformance requirements and verification procedures.
Safety and electromagnetic compatibility (EMC) requirements are outside the scope of this
document, and are covered by other standards and by regulations. However, information
given by this document can be of assistance.
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.
IEC 60728 (all parts), Cable networks for television signals, sound signals and interactive
services
IEC 61754-20 (all parts), Fibre optic interconnecting devices and passive components – Fibre
optic connector interfaces – Part 20: Type LC connector family
ISO/IEC 11801-1:2017, Information technology – Generic cabling for customer premises –
Part 1: General requirements
ISO/IEC 14763-2, Information technology – Implementation and operation of customer
premises cabling – Part 2: Planning and installation
ISO/IEC 30129, Information technology – Telecommunications bonding networks for buildings
and other structures
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/IEC 11801-1,
ISO/IEC 14763-2 and the following apply.

– 10 – ISO/IEC 11801-4:2017 © ISO/IEC 2017
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3.1.1
application outlet
telecommunications outlet or broadcast outlet
3.1.2
balun
device to provide impedance transformation between balanced and unbalanced components
3.1.3
broadcast outlet
fixed connecting device which provides an interface to the terminal equipment
3.1.4
coverage area
area within a home covered by any application
3.1.5
home
physical structure used as a dwelling place
EXAMPLE A house or an apartment.
Note 1 to entry: This can be an individual building, part of a larger building or more than one building.
3.1.6
home network interface
interface for access to the network for distribution of television signals, sound signals and
interactive services inside a single-tenant home
3.1.7
primary home cable
cable that connects a primary home distributor to a telecommunications outlet or broadcast
outlet or to a secondary home distributor where present
3.1.8
primary home distributor
distributor from which the primary home cable starts
3.1.9
secondary home cable
cable that connects a secondary home distributor to a telecommunications outlet or broadcast
outlet
3.1.10
secondary home distributor
distributor used to provide additional infrastructure flexibility and/or allocate transmission
equipment between the primary home distributor and coverage areas (e.g. for homes with
multiple floors)
3.2 Abbreviated terms
For the purposes of this document, the abbreviated terms given in ISO/IEC 11801-1 and the
following apply.
BO broadcast outlet
ENI external network interface
HNI home network interface
PHD primary home distributor
SHD secondary home distributor
TV television
UHF ultra-high frequency
VHF very high frequency
4 Conformance
For a cabling installation to conform to this document the following applies.
a) The configuration and structure shall conform to the requirements outlined in Clause 5.
b) Channels shall meet the requirements specified in Clause 6 when subjected to
environment conditions, local to the channels (see NOTE 2 below), as defined by the
applicable environmental Class(es) of Clause 6. This shall be achieved by one of the
following:
1) a channel design and implementation ensuring that the prescribed channel
performance of Clause 6 is met;
2) attachment of appropriate components to a permanent link design meeting the
prescribed performance class of Clause 7. Channel performance shall be ensured
where a channel is created by adding more than one cord to either end of a link
meeting the requirements of Clause 7;
3) for E environments, using the reference implementations of Clause 8 and compatible
cabling components conforming to the requirements of Clauses 9, 10 and 11 based
upon a statistical approach of performance modelling.
NOTE 1 This approach is not applicable to Class BCT-B cabling.
c) The interfaces to the cabling at the TO and BO shall conform to the requirements of
Clause 10 with respect to mating interfaces and performance when subjected to
environment conditions, local to the connecting hardware (see NOTE 2 below), as defined
by the applicable environmental Class(es) of Clause 6.
d) Connecting hardware at other places in the cabling structure shall meet the performance
requirements specified in Clause 10 when subjected to environment conditions, local to
the connecting hardware (see NOTE 2 below), as defined by the applicable environmental
Class(es) of Clause 6.
e) The requirements of ISO/IEC 14763-2 and ISO/IEC 30129 shall be met.
This document does not specify which tests and sampling levels should be adopted. Test
methods to assess conformance with the channel and link requirements of Clause 6 and
Clause 7, respectively, are specified in ISO/IEC 11801-1. The test parameters to be
measured, the sampling levels and the treatment of measured results to be applied for
particular installation shall be defined in the installation specification and quality plan for that
installation prepared in accordance with ISO/IEC 14763-2.
In the absence of the channel, the conformance of the link shall be used to verify
conformance with this document.
Specifications marked "ffs" are preliminary specifications, and are not required for
conformance to this document.
NOTE 2 The applicable environmental classification of ISO/IEC 11801-1:2017, 6.2.1, local to the cabling or
cabling component(s), is that of the environment immediately adjacent to the cabling or cabling component(s).
5 Structure of the generic cabling system
5.1 General
Clause 5 identifies the functional elements of a generic cabling system to support ICT and/or
BCT applications, describes how they are connected together to form subsystems and
identifies the interfaces at which application-specific components are connected to the
generic cabling infrastructure.

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The channels specified in Clause 6 do not generally support the simultaneous transmission of
multiple applications, of the same or different application Classes, within a cable or at an
interface to the generic cabling. The sharing of components by applications can require
additional performance requirements and/or supplier instructions to be applied. These
requirements are outside the scope of this document.
5.2 Functional elements
The functional elements of generic cabling are as follows:
a) primary home distributor (PHD) – equivalent to distributor 2 in ISO/IEC 11801-1;
b) primary home cable – equivalent to subsystem cable 2 in ISO/IEC 11801-1;
c) secondary home distributor (SHD) – equivalent to distributor 1 in ISO/IEC 11801-1;
d) secondary home cable – equivalent to subsystem cable 1 in ISO/IEC 11801-1;
e) application outlet (TO or BO) – equivalent to TE outlet in ISO/IEC 11801-1.
NOTE The SHD and secondary home cable are optional functional elements.
The type and number of functional elements used depends upon the type of premises and the
application group(s) served. It is possible to combine multiple functional elements into a
single element.
The functional elements used within a given implementation of a generic cabling system are
connected together to form cabling subsystems. The connection of equipment at the
application outlets and distributors supports applications.
Equipment is not included within the functional elements. The accommodation of functional
elements and the facilities for co-location of equipment and functional elements are discussed
in 5.6.
5.3 Cabling subsystems for ICT and BCT
5.3.1 General
Generic cabling schemes to support ICT and/or BCT applications contain a maximum of two
cabling subsystems: the primary home cabling subsystem and the secondary home cabling
subsystem, as shown in Figure 2.
IEC
Figure 2 – Structure of the generic cabling system
The composition of the subsystems is described in 5.3.2 and 5.3.3. Conformance to this
document does not require the presence of a secondary home cabling subsystem.
Distributors and application outlets provide the means for configuring the cabling to support
topologies in addition to those implemented by the installed cables.
Passive connections between the primary home cabling subsystem and the network access
cabling at the PHD are generally achieved by using cross-connections (see Figure 3).

Connection to application-specific equipment at the PHD generally adopts an interconnect
approach (see Figure 4). The active equipment can serve the home or can provide an
application-specific connection to the network access cabling.
Connections between the cabling subsystems at the SHD are either active, requiring
application-specific equipment, or passive using cross-connections by way of either patch
cords or jumpers (see Figure 3).
IEC
NOTE The dotted elements represent the boundaries of functional elements and not the enclosure that contains
the functional elements.
Figure 3 – Interconnect and cross-connect models
IEC
NOTE The dotted elements represent the boundaries of functional elements and not the enclosure that contains
the functional elements.
Figure 4 – Interconnect and cross-connects at the PHD

– 14 – ISO/IEC 11801-4:2017 © ISO/IEC 2017
5.3.2 Primary home cabling subsystem
The primary home cabling subsystem extends from the PHD to the TO or BO.
When an SHD is used, the primary home cabling subsystem extends from the PHD to the
SHD. The subsystem includes
a) the primary home cables,
b) the mechanical termination of the primary home cables at the SHD, TO or BO as
appropriate,
c) the mechanical termination of the primary home cables at the PHD including the
connecting hardware, e.g. of the interconnect or cross-connect (see Figure 3),
d) any cross-connection to network access cabling at the PHD,
e) TO or BO (where an SHD is not used).
Although equipment cords are used to connect the transmission equipment to the cabling
subsystem, they are not considered part of the cabling subsystem because they can be
application-specific.
The primary home cabling subsystem does not include the interface to the network access
cabling at the PHD.
5.3.3 Secondary home cabling subsystem
The secondary home cabling subsystem extends from an SHD to the TO or BO. The
subsystem includes
a) the secondary home cables,
b) the mechanical termination of the secondary home cables at the TO or BO,
c) the mechanical termination of the secondary home cables at the SHD,
d) any cross-connection at the SHD,
e) TO or BO.
Although equipment cords are used to connect the transmission equipment to the cabling
subsystem, they are not considered part of the cabling subsystem because they can be
application-specific.
5.4 Cabling structure
For generic cabling to support ICT and/or BCT applications, the functional elements of the
cabling subsystems are connected to form a hierarchical structure, as shown in Figure 5.
IEC
Figure 5 – Hierarchical structure of a generic cabling
system in support of ICT and BCT applications
For ICT and BCT applications, the cabling shall have a star topology from the distributors to
the application outlet (see Figure 5).

If needed, buses should be created at the PHD or SHD. If cabling is connected to a cabling
subsystem to create bus or multi-drop connections, this configuration is outside the scope of
this document.
5.5 Interfaces
5.5.1 Equipment interfaces and test interfaces
Equipment interfaces to generic cabling are located at distributors and application outlets.
Test interfaces to cabling are located at the ends of each subsystem.
Figure 6 shows the potential equipment interfaces and potential test interfaces within the
generic cabling system.
Transmission and terminal equipment are generally connected to the equipment interface
using an equipment cord.
– 16 – ISO/IEC 11801-4:2017 © ISO/IEC 2017
IEC
NOTE 1 The dotted elements represent the boundaries of functional elements and not the enclosure that contains
the functional elements.
NOTE 2 For BCT-C applications (see Clause 6), the test interface is defined according to IEC 61169-1.
Figure 6 – Equipment and test interfaces in support of ICT and BCT applications
5.5.2 Channel and permanent link
5.5.2.1 Channel
For cabling to support ICT and/or BCT applications, the channel consists of the home cabling
subsystem(s) together with the equipment cord(s), as shown in Figure 7.
It is important that the cabling channel is designed to meet the required performance for the
applications that are to be run. The performance of the channel excludes the connections at
the application-specific equipment.

The transmission performance of cabling channels is detailed in Clause 6.
The creation of a channel between two application outlets via a passive cross-connection at
the distributors is allowed provided that the relevant channel performance of Clause 6 is met.
The maximum channel lengths for each application group are dependent upon the
performance of the cable and connecting hardware used (see Table 1 and Table 2 for
maximum channel lengths using the reference implementations of Clause 8).
Where the performance requirements of an application allow, longer channels can be formed
by the passive connection of cabling subsystems together with equipment cords where
appropriate.
5.5.2.2 Permanent link
If there is no SHD, the permanent link consists of the primary home cable and the termination
of that cable at the application outlet and the PHD, as shown in Figure 7.
If there is an SHD, the permanent link consists of the primary or secondary home cable and
the termination of that cable at the SHD and the PHD or the application outlet, respectively,
as shown in Figure 7.
The permanent link includes the connections at the ends of the installed cabling.
The transmission performance of permanent links is detailed in Clause 7.
IEC
NOTE The dotted elements represent the boundaries of functional elements and not the enclosure that contains
the functional elements.
Figure 7 – Channels and permanent links within the home
5.5.3 Network access cabling
Network access cabling is presented at the PHD as shown in Figure 8.
In premises containing a single home, the network access cabling provides the connection
between the external network interfaces (public or private) and the PHD.
In premises containing multiple homes, the network access cabling can, subject to national or
local regulation, also provide the connection between

– 18 – ISO/IEC 11801-4:2017 © ISO/IEC 2017
a) individual homes in the same premises,
b) premises external network interfaces (public or private) and the PHD in each home.
When used to provide a direct connection between the generic cabling system and an
external network interface in the home, the performance of the network access cabling should
be considered as part of the initial design and implementation of customer applications.
When used to provide a direct connection between the generic cabling system and an
external network interface in the same premises (but not within the home served by the home
distributor), the network access cabling shall be in accordance with
1) ISO/IEC 11801-1 for ICT applications,
2) IEC 60728 for BCT applications.
The only interfaces to network access cabling within a home shall be those serving that home.
IEC
NOTE Some network access cabling uses bus structure.
Figure 8 – Examples of interconnection of home and network access cabling
5.5.4 External network interface
Connections to external networks for the provision of external telecommunications services
are made at ENIs. The location of ENIs, if present, and the facilities required may be specified
by national, regional, and local regulations. The service provider(s) shall be contacted to
locate the ENI(s).
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