kSIST prES 202 874-1 V1.1.1:2010

Final draft ETSI ES 202 874-1 V1.1.1 (2010-08)
ETSI Standard
Access, Terminals, Transmission and Multiplexing (ATTM);
External Common Power Supply for
Customer Premises Network and Access Equipment;
Part 1: Functional requirements

2 Final draft ETSI ES 202 874-1 V1.1.1 (2010-08)

Reference
DES/ATTM-02011
Keywords
power supply
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3 Final draft ETSI ES 202 874-1 V1.1.1 (2010-08)

Contents
Intellectual Property Rights . 4
Foreword . 4
Introduction . 4
1 Scope and Purpose . 6
1.1 Scope . 6
1.2 Applicability . 6
1.3 Requirements Notation . 6
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 8
3 Definitions and abbreviations . 9
3.1 Definitions . 9
3.2 Abbreviations . 9
4 Market scenarios and use cases . 10
4.1 The state of the art . 10
4.1.1 Market situation . 10
4.1.2 Power supply energy efficiency issues . 11
4.2 CPS categories . 11
4.2.1 Connectors . 12
4.2.2 Reliability and environmental conditions . 12
4.3 The usage scenarios . 12
4.4 Usability issues and CPS elements . 12
4.5 Coexistence with Powerline communications . 13
5 Requirements for CPS operating conditions . 15
5.1 EMC and safety requirements . 16
5.2 Reliability . 17
5.3 Protection . 17
5.4 Environmental conditions . 17
6 Requirements for CPS energy efficiency . 17
6.1 Efficiency targets . 17
6.2 Efficiency measurement method . 18
7 Requirements for CPS connectors . 18
8 Requirements for CPS eco-design . 18
Annex A (informative): Bibliography . 19
History . 20

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4 Final draft ETSI ES 202 874-1 V1.1.1 (2010-08)

Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This ETSI Standard (ES) has been produced by ETSI Technical Committee Access, Terminals, Transmission and
Multiplexing (ATTM), and is now submitted for the ETSI standards Membership Approval Procedure.
The present document is part 1 of a multi-part deliverable covering the External Common Power Supply (CPS) for
Customer Premises Network and Access Equipment, as identified below:
ES 202 874-1: "Functional requirements";
TS 102 874-2: "Integrated Broadband Cable and Television Networks";
TS 102 874-3: "CPS Type 1 implementation details";
TS 102 874-4: "Part 4: CPS Type 2.b implementation details";
TS 102 874-5: "CPS Type 2.c implementation".
Introduction
The present document addresses the functional requirements and implementation and operational aspects of the
External Common Power Supply (CPS) for Customer Premises Network and Access Equipment.
The multi-part deliverable represents a set of cohesive interwoven technical information that has jointly evolved to
define solution of most efficient equipment, as defined below:
• ES 202 874-1 defines functional requirements for four different categories of CPS.
• TS 102 874-2 [i.1] defines detailed implementation and operational aspects for CPS Type 2.a.
• TS 102 874-3 [i.2] defines detailed implementation and operational aspects for CPS Type 1.
• TS 102 874-4 [i.3] defines detailed implementation and operational aspects for CPS Type 2.b.
• TS 102 874-5 [i.4]: defines detailed implementation and operational aspects for CPS Type 2.c.
The intended applications of these CPS categories are specified in the present document.
Table 1 summarises the structure of the present document.
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5 Final draft ETSI ES 202 874-1 V1.1.1 (2010-08)

Table 1
CPS category Functional requirements Implementation aspects
Type 1: 5V, 2A TS 102 874-3 [i.2]
Type 2.a: 12V, 1A TS 102 874-2 [i.1]
ES 202 874-1
Type 2.b: 12V, 2A TS 102 874-4 [i.3]
Type 2.c: 12V, 5A TS 102 874-5 [i.4]

The present document is describing functional requirements applicable to an external common power supply (CPS)
converting and adapting AC mains to DC power for customer premises network equipment. Other methods for
providing power to end devices are not in the scope of the document (e.g. Power Over Ethernet, power on USB, etc.).
The requirements were defined on the basis of HGI (Home Gateway Initiative) activity on the same subject contained in
the public document HGI-RD015-R3 [i.5]. That is the result of collaborative efforts of HGI members that include
Broadband Service Providers (BSPs), gateway manufacturers, and silicon vendors.
The present document is defining operating conditions, energy efficiency and ecodesign aspects for a number of
categories of power supplies, depending on market applicability and power needs of the targeted Customer Premises
Equipment (CPEs). Additional Technical Specifications will address the implementation aspects for each of the CPS
categories here defined, including the choice of connectors.
The need for standardization activities in energy efficiency and ecodesign related to telecommunications is now widely
seen. For example the European Union, in the "ICT 2009 Standardization Work Programme" [i.6] highlights this need.
Enabling the use of standardized power supplies, or the development of a new Common Power Supply (CPS) for DSL
modems, home gateways, optical network terminations is a key aspect of telecommunications standardization that will
contribute to ecodesign.
The expected timeline for adoption of the present document is as follows:
• Initial, partial deployments prior to 2011 depending on availability of specific TSs.
• Universal deployments for customer premises equipment within service providers' networks (i.e. within those
service providers mandating these requirements) starting from 2011.
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6 Final draft ETSI ES 202 874-1 V1.1.1 (2010-08)

1 Scope and Purpose
1.1 Scope
The present document specifies a universal solution for power supplies (named Common Power Supply and indicated
with the acronym CPS) suitable for customer equipment used in the home networks, using energy provided by mains
power in a range between 100 V and 240 V AC and 50 Hz to 60 Hz of frequency (apart tolerances). The topics
addressed in the present document are as follows:
• applicability: definition of product categories included in the scope (home gateway, and various other devices
installed in the home network);
• market scenarios and use cases for the use of the CPS in the home environment;
• functional requirements for electrical operating conditions of the CPS;
• functional requirements for energy efficiency of the CPS;
• functional requirements for connectors on the CPS and devices which it powers;
• functional requirements for eco-design of the CPS.
1.2 Applicability
Customer Network Gateway (CNG) Power Supply
Customer Network Gateways, also called Home gateways, currently use external power supplies ("bricks") that provide
different ranges of output voltage and current.
Furthermore, the connectors on the HG which attach to the power supply, and the corresponding connectors on the
cable frequently differ, not only between HGs of different vendors, but also between different HG models from the
same vendor. A suitable output voltage and current, along with connector type would have to be specified to create a
truly "universal" solution applicable to all home gateways.
Home Network Infrastructure Devices (HNIDs) Power Supply
In addition to home gateways, other home network infrastructure devices (HNIDs) may use a power supply with similar
features in terms of voltage and current, so that a common solution could be defined for both types of device.
These HNID devices may have a similar specification and distribution process, in other words they are managed and/or
supplied by a common BSP. Therefore, the extension of the CPS solution defined for HGs to HNIDs has also been
considered.
End Device Power Supply
Some end user devices use power supplies with similar characteristics to those of CNGs (e.g. some set top boxes,
cordless phones and IP phones).
The requirements contained in the present document apply to all the above mentioned categories.
1.3 Requirements Notation
If the present document is implemented, the key words "MUST" and "SHALL" as well as "REQUIRED" are to be
interpreted as indicating a mandatory aspect of the present document. The keywords indicating a certain level of
significance of a particular requirement that are used throughout the present document are summarized below.
MUST: This word or the adjective "REQUIRED" means that the item is an absolute requirement of the present
document.
MUST NOT: This phrase means that the item is an absolute prohibition of the present document.
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7 Final draft ETSI ES 202 874-1 V1.1.1 (2010-08)

SHOULD: This word or the adjective "RECOMMENDED" means that there may exist valid reasons in particular
circumstances to ignore this item, but the full implications should be understood and the case carefully weighed before
choosing a different course.
SHOULD NOT: This phrase means that there may exist valid reasons in particular circumstances when the listed
behaviour is acceptable or even useful, but the full implications should be understood and the case carefully weighed
before implementing any behaviour described with this label.
MAY: This word or the adjective "OPTIONAL" means that this item is truly optional. One vendor may choose to
include the item because a particular marketplace requires it or because it enhances the product, for example; another
vendor may omit the same item.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
reference document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are necessary for the application of the present document.
[1] Home Gateway Initiative HGI-RD001-R2 (2008): "Technical Requirements: Residential Profile
V1.0".
NOTE: Available at: http://www.homegatewayinitiative.org/publis/HGI_V1.01_Residential.pdf.
[2] Commission Regulation (EC) No 278/2009 of 6 April 2009 implementing Directive 2005/32/EC
of the European Parliament and of the Council with regard to ecodesign requirements for no-load
condition electric power consumption and average active efficiency of external power supplies. ®
[3] Energy Star : "Program Requirements for Single Voltage External Ac-Dc and Ac-Ac Power
Supplies - Eligibility Criteria (Version 2.0)".
[4] Public Law 110-140 (19 December 2007): "Energy Independence And Security Act Of 2007".
[5] United States Environmental Protection Agency (US EPA) (11 August 2004): "Test Method for
Calculating the Energy Efficiency of Single-Voltage External Ac-Dc and Ac-Ac Power Supplies".
[6] CENELEC EN 60950-1 (2006): " Information technology equipment - Safety - Part 1: General
requirements".
[7] CENELEC EN 55022 (2006) and Amendment 1 (2007): " Information technology equipment -
Radio disturbance characteristics - Limits and methods of measurement".
[8] CENELEC EN 55024 (1998), Amendment 1 (2001) and Amendment 2 (2003): "Information
technology equipment - Immunity characteristics - Limits and methods of measurement".
[9] IEEE 1413 (2010): "Standard Framework for Reliability Prediction of Hardware".
[10] ETSI EN 300 019-1-1: "Environmental Engineering (EE); Environmental conditions and
environmental tests for telecommunications equipment; Part 1-1: Classification of environmental
conditions; Storage".
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8 Final draft ETSI ES 202 874-1 V1.1.1 (2010-08)

[11] ETSI EN 300 019-1-3: "Environmental Engineering (EE); Environmental conditions and
environmental tests for telecommunications equipment; Part 1-3: Classification of environmental
conditions; Stationary use at weather protected locations".
[12] ETSI EN 300 019-1-2: "Environmental Engineering (EE); Environmental conditions and
environmental tests for telecommunications equipment; Part 1-2: Classification of Environmental
Conditions; Transportation".
[13] ITU-T Recommendation G.992.3: "Asymmetric digital subscriber line transceivers 2 (ADSL2)".
[14] ITU-T Recommendation K.21: "Resistibility of telecommunication equipment installed in
customer premises to overvoltages and overcurrents".
[15] CISPR 22: "Information technology equipment - radio disturbance characteristics - limits and
methods of measurement".
[16] CENELEC EN 61000-4-11: "Electromagnetic compatibility (EMC) - Part 4-11: Testing and
measurement techniques - Voltage dips, short interruptions and voltage variations immunity tests".
[17] CENELEC EN 61000-4-2: "Electromagnetic compatibility (EMC) - Part 4-2: Testing and
measurement techniques - Electrostatic discharge immunity test".
[18] CENELEC EN 61000-4-5: "Electromagnetic compatibility (EMC) - Part 4-5: Testing and
measurement techniques - Surge immunity test".
[19] CENELEC EN 61000-3-2: "Electromagnetic compatibility (EMC) - Part 3-2: Limits - Limits for
harmonic current emissions (equipment input current <= 16 A per phase)".
2.2 Informative references
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ETSI TS 102 874-2: "Access, Terminals, Transmission and Multiplexing (ATTM); External
Common Power Supply for Customer Premises Network and Access Equipment; Part 2: Integrated
Broadband Cable and Television Networks".
[i.2] ETSI TS 102 874-3: "Access, Terminals & Transmission, Multiplexing (ATTM); External
Common Power Supply for Customer Premises Network and Access Equipment; Part 3: CPS
Type 1 implementation details".
[i.3] ETSI TS 102 874-4: "Access, Terminals & Transmission, Multiplexing (ATTM); External
Common Power Supply for Customer Premises Network and Access Equipment; Part 4: CPS
Type 2.b implementation details".
[i.4] ETSI TS 102 874-5: "Access, Terminals & Transmission, Multiplexing (ATTM); External
Common Power Supply for Customer Premises Network and Access Equipment; Part 5: CPS
Type 2.c implementation".
[i.5] Home Gateway Initiative HGI-RD015-R3: "Energy Efficiency and Ecodesign requirements for a
common power supply (CPS) for home gateway, home networking equipment and end devices".
[i.6] European Commission: "ICT 2009 Standardization Work Programme".
NOTE: Available at: http://ec.europa.eu/enterprise/sectors/ict/files/wp2009_en.pdf.
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9 Final draft ETSI ES 202 874-1 V1.1.1 (2010-08)

3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
Customer Network (CN): in-house network composed by home gateway, end devices, network segments (physical
wired or wireless connections between customer network elements), home network infrastructure devices such as
network adapters (performing a L1/L2 conversion between different network segments) and nodes (network adapters
with L3 routing capabilities)
NOTE: Also called Home Network (HN) or Customer Premises Network (CPN).
Customer Network Gateway (CNG): gateway between the HN and the Access Network able to perform networking
functions from physical connection to bridging and routing capabilities, but also possibly implementing functions
related to the service support
NOTE: Also called Home Gateway (HG) or Small Business Gateway (SBG).
Customer Network Device (CND): physical device enabling service(s) usage
NOTE 1: Also called End Device (ED).
NOTE 2: EDs can be dedicated to the internet, conversational and audio-video services. But they could be also
Consumer Electronics equipment and other devices which may have nothing to do with these premium
services (e.g. services performing a content sharing within a HN, typically between a PC and a music
system, through the HG).
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
ADSL Asymmetric Digital Subscriber Line
BSP Broadband Service Provider
CE Comission Européenne
NOTE: "CE" is the European symbol for products’ compliance to safety and EMC directives QLN Quiet Line
Noise.
CND Customer Network Device
CNG Customer Network Gateway
CPE Customer Premises Equipment
CPN Customer Premises Network
CPS Common Power Supply
DC Direct Current
DSL Digital Subscriber Line
ED End Device
EMC ElectroMagnetic Compatibility
EuP Energy-using products
HG Home Gateway
HGI Home Gateway Initiative
HNID Home Network Infrastructure Device
ITU-T International Telecommunication Union - Telecommunication standardisation sector
LAN Local Area Network
MTBF Mean Time Between Failures
NAS Network Attached Storage
NT Network Termination
PLT PowerLines Technologies
PSU Power Supply Unit
PVC PolyVinyl Chloride
ETSI
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