SIST ES 203 215 V1.2.1:2016

ETSI ES 203 215 V1.2.1 (2011-10)

ETSI Standard
Environmental Engineering (EE);
Measurement Methods and Limits for Power Consumption in
Broadband Telecommunication Networks Equipment

2 ETSI ES 203 215 V1.2.1 (2011-10)

Reference
DES/EE-00015
Keywords
broadband, power supply
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
Individual copies of the present document can be downloaded from:
http://www.etsi.org
The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
http://portal.etsi.org/chaircor/ETSI_support.asp
Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2011.
All rights reserved.
TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members.
TM
3GPP and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI
3 ETSI ES 203 215 V1.2.1 (2011-10)
Contents
Intellectual Property Rights . 4
Foreword . 4
Introduction . 4
1 Scope . 5
2 References . 5
2.1 Normative references . 5
2.2 Informative references . 6
3 Definitions and abbreviations . 6
3.1 Definitions . 6
3.2 Abbreviations . 7
4 Definition of power consumption . 7
4.1 Definition of power consumption per port of broadband network equipment . 7
4.2 Power consumption taking into account the low-power states . 8
5 Measurement methods . 8
5.1 General requirements . 8
5.1.1 Measurement conditions . 8
5.1.2 Measurement instruments requirements . 9
5.1.3 Considered equipment . 9
5.1.4 Not considered equipment . 9
5.1.5 Measurement reference points . 10
5.1.6 Traffic profile . 10
5.2 Measurement method for DSLAM/MSAN equipment . 10
5.2.1 Equipment configuration . 10
5.2.2 Reference measurement method . 12
5.3 Measurement method for OLT equipment . 13
5.3.1 Equipment configuration . 13
5.3.2 Reference measurement method . 13
5.4 Alternative measurement method . 14
5.5 Reporting of the measurements . 15
Annex A (informative): Power consumption limits . 16
A.1 DSLAM power limits . 16
A.2 MSAN POTS power limits. 17
A.3 OLT power limits . 18
Annex B (informative): Example hourly traffic distribution profiles . 19
Annex C (informative): NPC definition and calculation examples . 20
Annex D (informative): Measurement power consumption for DSLAM/MSAN and OLT
equipment for different number of active ports . 21
Annex E (informative): Bibliography . 22
History . 23

ETSI
4 ETSI ES 203 215 V1.2.1 (2011-10)
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://ipr.etsi.org).
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 Environmental Engineering (EE).
Introduction
The present document defines the energy consumption limits and measurement methods for fixed broadband
telecommunication network equipment.
ETSI
5 ETSI ES 203 215 V1.2.1 (2011-10)
1 Scope
The present document defines the power consumption limits, the methodology and the test conditions to measure the
power consumption of broadband fixed telecommunication networks equipment. Some proposal power consumption
limits are provided as informative data.
The document does not cover all possible configuration of equipment but only homogenous configuration.
The types of broadband access technologies covered by the present document are the ones widely deployed at the date
of publication. Currently, the present document considers DSLAM DSL, MSAN, GPON OLT, Point to Point OLT
equipment. Other access technologies may be included in further versions of the present document.
In addition to the full power state, power-saving states as defined in DSL standards [i.1] and [i.2] are also covered.
The present document focuses on Network Equipment. The end-user equipment will be handled in another document.
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] ETSI TS 101 388: "Access Terminals Transmission and Multiplexing (ATTM); Access
transmission systems on metallic access cables; Asymmetric Digital Subscriber Line (ADSL) -
European specific requirements [ITU-T Recommendation G.992.1 modified]".
[2] ETSI EN 300 132-2: "Environmental Engineering (EE); Power supply interface at the input to
telecommunications and datacom (ICT) equipment; Part 2: Operated by -48 V direct current (dc)".
[3] ETSI TS 101 271 (V1.1.1): "Access Terminals Transmission and Multiplexing (ATTM); Access
transmission system on metallic pairs; Very High Speed digital subscriber line system (VDSL2);
[ITU-T Recommendation G.993.2 modified]".
[4] IEC 60038 (Ed. 7.0): "IEC standard voltages".
[5] ETSI ES 201 970: "Access and Terminals (AT); Public Switched Telephone Network (PSTN);
Harmonized specification of physical and electrical characteristics at a 2-wire analogue presented
Network Termination Point (NTP)".
[6] ITU-T Recommendation G.984: "Gigabit-capable Passive Optical Networks (GPON)".
[7] ITU-T Recommendation G.984.2: "Gigabit-capable Passive Optical Networks (G-PON): Physical
Media Dependent (PMD) layer specification".
[8] IEEE 802.3: "IEEE Standard for Information technology-Specific requirements -- Part 3: Carrier
Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and Physical Layer
Specifications".
ETSI
6 ETSI ES 203 215 V1.2.1 (2011-10)
[9] Broadband Forum TR-100: "ADSL2/ADSL2plus; Performance Test Plan".
[10] Broadband Forum TR-114: "VDSL2 Performance Test Plan".
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] ITU-T Recommendation G.992.3 (2005): "Asymmetric digital subscriber line transceivers 2
(ADSL2)".
[i.2] ITU-T Recommendation G.992.5 (2005): "Asymmetric Digital Subscriber Line (ADSL)
transceivers - Extended bandwidth ADSL2 (ADSL2plus)".
[i.3] ITU-T Recommendation G.993.2 (2006): "Very high speed digital subscriber line 2 (VDSL2)".
[i.4] ETSI TR 102 530: "Environmental Engineering (EE); The reduction of energy consumption in
telecommunications equipment and related infrastructure".
[i.5] Broadband Forum TR-202: "ADSL2/ADSL2plus Low-Power Mode Guidelines".
[i.6] Code of Conduct on Energy Consumption of Broadband Equipment, European Commission
Directorate-General, Joint Research Centre.
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
active line: line in operational mode and carrying traffic as specified for that mode of operation (ADSL2plus or
VDSL2)
broadband telecommunication network equipment: equipment of broadband technology that is part of a
telecommunication network
broadband terminal equipment: equipment of broadband technology that is connected beyond the Network
Termination Point of a telecommunication network
full-power state: state in which the maximal allowed data transmission is possible
NOTE: The maximum is defined by the physical properties of the line and the settings of the operator (e.g. L0 for
ADSL2/2plus).
low-power state: state in which a limited power reduction capability and a limited data transmission is allowed
NOTE: It is entered automatically from the full power state after the data transmission during a certain time is
lower than the limit. If more than the limited data has to be transmitted from either side a state change to
the full power state is entered automatically. The low power state may comprise multiple sub-states with
history dependant state transition rules (e.g. L2 for ADSL2/2plus).
power consumption: power used by a device to achieve an intended application performance
stand-by state: state in which the largest power reduction capability and no transmission of data is possible
NOTE: From this state a direct state change to the full-transmission state is possible, if data has to be transmitted
from either side (e.g. L3 for ADSL2/2plus).
telecommunication network: network operated under a license granted by a national telecommunications authority,
which provides telecommunications between Network Termination Points (NTPs) (i.e. excluding terminal equipment
beyond the NTPs)
ETSI
7 ETSI ES 203 215 V1.2.1 (2011-10)
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternative Current
ADSL Asymmetric Digital Subscriber Line
ADSL2plus Second generation ADSL with extended bandwidth
CPE Customer Premises Equipment
DBA Dynamic Bandwidth Allocation
DC Directive Current
DSL Digital Subscriber Line
DSLAM Digital Subscriber Line Access Multiplexer
DSM Dynamic Spectrum Management
GPON Gigabit Passive Optical Network
IP Internet Protocol
MAC Media Access Control
MELT Metallic Loop Test
MIMO Multiple Input Multiple Output
MPLS Multiprotocol Label Switching
MSAN Multi Service Access Node
NPC Normalized Power Consumption
OLT Optical Line Termination
ONU Optical Network Unit
POTS Plain Old Telephone Service
PSTN Public Switched Telephone Network
QoS Quality of Service
VAC Ventilation Air Conditioning
VDSL Very high speed Digital Subscriber Line
VDSL2 second generation VDSL
VLAN Virtual Local Area Network
4 Definition of power consumption
4.1 Definition of power consumption per port of broadband
network equipment
The power consumption of broadband telecommunication network equipment is defined as:
P = P / N
BBport BBeq ports
Where:
P is the power consumption (in W) of a fully equipped broadband network equipment, measured at the electric
BBeq
power input interface, placed at the premises of the operator or the equipment supplier, which connects multiple
broadband subscribers to a backbone. P is measured in determined environmental conditions defined in
BBeq
clause 5.1.1.
P is the power consumption per port in W of the broadband network equipment for which the limits are defined in
BBport
the present document.
N is the maximum number of subscriber lines access ports served by the broadband network equipment under test.
ports
ETSI
8 ETSI ES 203 215 V1.2.1 (2011-10)
4.2 Power consumption taking into account the low-power
states
The low-power states are intended to reduce the power consumption during periods of no or minimal traffic needs
(e.g. low data-rate applications or control signalling only). When these low-power states are used, the achievable power
consumption reduction can be estimated by using profiles based on user traffic assumptions, some example of user
hourly traffic as illustrated in annex B.
NOTE 1: Example of power-saving states usage.
A number of power-saving states are defined in the DSL standards (L2, L3, ITU-T Recommendations
G.992.3 [i.1] and G.992.5 [i.2]). These power-saving states are implemented, both in the Network
equipment (i.e. the subject of the present document) and the CPE/end-user equipment deployed at the
premises of the user of the broadband line; this will enable the operator to use these to further limit the
power consumption of the equipment. Further study is required to optimize the way in which the
low-power states are controlled. In particular, to determine the levels of interference that might arise due
to the fluctuating crosstalk caused by frequent multi-state power transitions.
It is important to notice that it is only possible for GPON to use stand-by state if all ONU are in stand-by
state and not individually as possible for Point-to-Point transmission.
NOTE 2: Additional power saving solutions. A number of additional power saving solutions are available. Some of
these are listed below. However the list is not complete and both the developers and users of broadband
network equipment are encouraged to investigate and introduce new power saving solutions:
� Politeness algorithms.
� Dynamic Spectrum Management.
� Boards optimized for remote applications (reduced line power).
� Dynamic power saving for unused components such as line card, chipset, port, etc.
5 Measurement methods
This clause describes the methods to measure the power consumption of broadband network equipment and also gives
the conditions under which these measurements shall be performed.
5.1 General requirements
5.1.1 Measurement conditions
The power measurements shall be performed in a laboratory environment under the following conditions:
• Room Temperature: 25 °C ± 2 °C.
• Room Relative Humidity: 30 % to 75 %.
• Operating voltage:
- DC Powered Equipment: According to EN 300 132-2 [2], -54,5 V ± 1,5 V for nominal voltage of -48 V
DC powered equipment. Equipment using voltage other than -48 V DC shall be tested at ± 1 % of the
nominal voltage.
- AC Powered Equipment: According to IEC 60038 [4], 230 V ± 1 % for nominal voltage of 230 V AC
and frequency 50 Hz ± 1 %.
ETSI
9 ETSI ES 203 215 V1.2.1 (2011-10)
• Minimum Measurement Duration: Equipment shall be allowed to stabilize to get stable power measurement. If
power varies over the measurement interval time, an average of measurement shall be calculated:
- For DSLAM equipment, wait 1 minute to settle bitswap after entering L0 mode. After entering L2 mode,
wait one more minute after achieving the final trimmed power level.
- For OLT equipment, wait till OLT and the connected ONUs have finished ranging and dynamic
bandwidth allocation (DBA). The DBA will ensure that any unused bandwidth on a specific GPON port
is allocated to the ONUs connected to it.
5.1.2 Measurement instruments requirements
All measurement instruments used should be calibrated by counterpart national metrology institute and within
calibration due date, and the measurement tolerance must be within ±1 %:
• Power Source: Power sources used to provide power to the equipment under test shall be capable of providing
a minimum of 1,5 times the power rating of the equipment under test.
• Power Measurement Instrument: Power measurement instrument (such as voltmeter and amperometer or
power analyzer) shall have a resolution of 0,5 % or better. AC power measurement instrument shall have the
following minimum characteristics:
1) A minimum digitizing sample rate of 40 kHz.
2) Input circuitry with a minimum bandwidth of 80 kHz.
3) It shall be capable of accurate readings of waveforms having. Crest Factor up to at least 5.
5.1.3 Considered equipment
The following items are considered part of the broadband network equipment and therefore their power consumption
shall be taken into account to get the total power consumption (P ) of the broadband network equipment:
BBeq
• Network Termination board, providing one or more links to the Core or Backhaul Network.
NOTE: The actual number of links should reflect the normal resilience practice for that type of equipment.
Furthermore, all uplink ports should carry test traffic averaged or approximatively averaged.
• Line Termination board, providing a number of DSL, POTS, GPON or Point to Point Ethernet ports connected
to the end-user through the metallic lines or optical fibre.
• Backplane (or other) to interconnect the different blocks of the broadband network equipment.
• Inside Rack Cooling system (e.g. fans drawer inside cabinet based broadband systems).
• Normal operational power supply unit.
5.1.4 Not considered equipment
The following items are not considered part of the broadband network equipment and therefore their power
consumption shall not be added to the power consumption of the broadband network equipment:
• External rectifier (AC - DC converter).
• Room or outdoor Cabinet Ventilation and Air Conditioning Unit (VAC Unit).
• Auxiliary or redundant power unit.
• Battery.
• For DSLAM equipment, Additional External signal processing (Dynamic Spectrum Management (DSM) and
Multiple Input Multiple Output (MIMO) techniques if not implemented as part of the Line Termination board).
ETSI
10 ETSI ES 203 215 V1.2.1 (2011-10)
For those boards which have more than the bare DSL functionality but have additional functions (e.g. MELT, vectoring,
test access and channel bonding, etc.), these boards are to be used in normal DSL mode of operation with such
additional functions disabled. Optionally a measurement with these functions enabled can be described/requested. In
case such additional functions cannot be fully disabled, manufacturer will declare what is the extra power budget due to
the added functionality. Such extra budget will not be considered in P .
BBport
5.1.5 Measurement reference points

Core
Enclosure
DC1 DC2
AC1 AC2
- 48V .
Recti-
.
fier
Broadband .
Interface
Equipment
.
“A”
.
AC
Climate
.
Input
Unit
Battery
Line
Input /
3pp/Aux Eq
Output
Signal
Figure 1: Broadband Node site reference model
The power consumption requirements of the present document apply at Interface "A" [2] as shown in figure 1 (i.e. at the
point DC2 for the configuration in figure 1).
5.1.6 Traffic profile
Definition of Ethernet traffic:
• Bridge mode.
• Random variable packet size distribution from 64 octets to 1 518 octets (bytes).
• Traffic rates limited to 80% of net activation rate (takes overhead into account).
Traffic shall flow in both directions, but due in case of Upstream and Downstream possible asymmetry,
...

Final draft ETSI ES 203 215 V1.1.1 (2010-09)
ETSI Standard
Environmental Engineering (EE);
Measurement Methods and Limits for Power Consumption
in Broadband Telecommunication Networks Equipment

2 Final draft ETSI ES 203 215 V1.1.1 (2010-09)

Reference
DES/EE-00015
Keywords
broadband, power supply
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
Individual copies of the present document can be downloaded from:
http://www.etsi.org
The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
http://portal.etsi.org/chaircor/ETSI_support.asp
Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2010.
All rights reserved.
TM TM TM TM
DECT , PLUGTESTS , UMTS , TIPHON , the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered
for the benefit of its Members.
TM
3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.
LTE™ is a Trade Mark of ETSI currently being registered
for the benefit of its Members and of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI
3 Final draft ETSI ES 203 215 V1.1.1 (2010-09)
Contents
Intellectual Property Rights . 4
Foreword . 4
Introduction . 4
1 Scope . 5
2 References . 5
2.1 Normative references . 5
2.2 Informative references . 6
3 Definitions and abbreviations . 6
3.1 Definitions . 6
3.2 Abbreviations . 7
4 Definition of power consumption . 7
4.1 Definition of power consumption per line of broadband network equipment . 7
4.2 Definition of normalized power consumption per line for broadband network equipment . 7
4.3 Power consumption taking into account the low-power states . 8
5 Measurement methods . 9
5.1 General requirements . 9
5.1.1 Measurement conditions . 9
5.1.2 Measurement instruments requirements . 9
5.1.3 Considered equipment . 9
5.1.4 Not considered equipment . 10
5.1.5 Measurement reference points . 10
5.1.6 Traffic profile . 11
5.2 Measurement method for DSLAM/MSAN equipment . 11
5.2.1 Equipment configuration . 11
5.2.2 Reference measurement method . 12
5.3 Measurement method for OLT equipment . 13
5.3.1 Equipment configuration . 13
5.3.2 Reference measurement method . 14
5.4 Alternative measurement method . 14
5.5 Reporting of the measurements . 15
6 Power consumption limits . 16
6.1 DSLAM power limits . 16
6.2 MSAN POTS power limits . 17
6.3 OLT power limits . 17
Annex A (normative): ADSL2plus/VDSL line configuration . 18
A.1 ADSL2plus line configuration . 18
A.2 VDSL2 line configuration . 18
Annex B (informative): Example traffic profiles . 20
Annex C (informative): NPC calculation examples . 21
Annex D (informative): Bibliography . 22
History . 23

ETSI
4 Final draft ETSI ES 203 215 V1.1.1 (2010-09)
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 Environmental Engineering (EE), and is
now submitted for the ETSI standards Membership Approval Procedure.
Introduction
The present document defines the energy consumption limits and measurement methods for fixed broadband
telecommunication network equipment.
ETSI
5 Final draft ETSI ES 203 215 V1.1.1 (2010-09)
1 Scope
The present document defines the power consumption limits, the methodology and the test conditions to measure the
power consumption of broadband fixed telecommunication networks equipment.
The power consumption limits are mostly in line with the European Code of Conduct for Broadband Equipment
version 3 [i.1] but also made some extension on power targets roadmap.
The types of broadband access technologies covered by the present document are the ones widely deployed at the date
of publication. Currently, the present document considers DSLAM DSL, MSAN, GPON OLT, Point to Point OLT
equipment. Other access technologies may be included in further versions of the present document.
In addition to the full power state, power-saving states as defined in DSL standards [i.2] and [i.3] are also covered.
The present document focuses on Network Equipment. The end-user equipment will be handled in other document.
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] ETSI TS 101 388: "Access Terminals Transmission and Multiplexing (ATTM); Access
transmission systems on metallic access cables; Asymmetric Digital Subscriber Line (ADSL) -
European specific requirements [ITU-T Recommendation G.992.1 modified]".
[2] ETSI EN 300 132-2: "Environmental Engineering (EE); Power supply interface at the input to
telecommunications equipment; Part 2: Operated by direct current (dc)".
[3] ETSI TS 101 271 (V1.1.1): "Access Terminals Transmission and Multiplexing (ATTM); Access
transmission system on metallic pairs; Very High Speed digital subscriber line system (VDSL2);
[ITU-T Recommendation G.993.2 modified]".
[4] IEC 60038 (Ed. 7.0): "IEC standard voltages".
[5] ETSI ES 201 970: "Access and Terminals (AT); Public Switched Telephone Network (PSTN);
Harmonized specification of physical and electrical characteristics at a 2-wire analogue presented
Network Termination Point (NTP)".
[6] ITU-T Recommendation G.984: "Gigabit-capable Passive Optical Networks (GPON)".
[7] ITU-T Recommendation G.984.2: "Gigabit-capable Passive Optical Networks (GPON): Physical
Media Dependent (PMD) layer specification".
[8] IEEE 802.3: "IEEE Standard for Information technology-Specific requirements -- Part 3: Carrier
Sense Multiple Access with Collision Detection (CMSA/CD) Access Method and Physical Layer
Specifications".
ETSI
6 Final draft ETSI ES 203 215 V1.1.1 (2010-09)
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] Code of Conduct on Energy Consumption of Broadband Communication Equipment European
Commission Directorate-General, Joint Research Centre; Final v3: 18 November 2008.
[i.2] ITU-T Recommendation G.992.3 (2005): "Asymmetric digital subscriber line transceivers 2
(ADSL2)".
[i.3] ITU-T Recommendation G.992.5 (2005): "Asymmetric Digital Subscriber Line (ADSL)
transceivers - Extended bandwidth ADSL2 (ADSL2plus)".
[i.4] ITU-T Recommendation G.993.2 (2006): "Very high speed digital subscriber line 2 (VDSL2)".
[i.5] ETSI TR 102 530: "Environmental Engineering (EE); The reduction of energy consumption in
telecommunications equipment and related infrastructure".
[i.6] Broadband Forum TR-202: "ADSL2/ADSL2plus Low-Power Mode Guidelines".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
active line: line in operational mode and carrying traffic as specified for that mode of operation (ADSL2plus or
VDSL2)
broadband telecommunication network equipment: equipment of broadband technology that is part of a
telecommunication network
broadband terminal equipment: equipment of broadband technology that is connected beyond the Network
Termination Point of a telecommunication network
full-power state: state in which the maximal allowed data transmission is possible
NOTE: The maximum is defined by the physical properties of the line and the settings of the operator (e.g. L0 for
ADSL2/2plus).
low-power state: state in which a limited power reduction capability and a limited data transmission is allowed
NOTE: It is entered automatically from the full power state after the data transmission during a certain time is
lower than the limit. If more than the limited data has to be transmitted from either side a state change to
the full power state is entered automatically. The low power state may comprise multiple sub-states with
history dependant state transition rules (e.g. L2 for ADSL2/2plus).
power consumption: power used by a device to achieve an intended application performance
stand-by state: state in which the largest power reduction capability and no transmission of data is possible
NOTE: From this state a direct state change to the full-transmission state is possible, if data has to be transmitted
from either side (e.g. L3 for ADSL2/2plus).
telecommunication network: network operated under a license granted by a national telecommunications authority,
which provides telecommunications between Network Termination Points (NTPs) (i.e. excluding terminal equipment
beyond the NTPs)
ETSI
7 Final draft ETSI ES 203 215 V1.1.1 (2010-09)
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternative Current
ADSL Asymmetric Digital Subscriber Line
ADSL2plus Second generation ADSL with extended bandwidth
CPE Customer Premises Equipment
DC Directive Current
DSL Digital Subscriber Line
DSLAM Digital Subscriber Line Access Multiplexer
DSM Dynamic Spectrum Management
GPON Gigabit Passive Optical Network
IP Internet Protocol
MELT Metallic Loop Test
MIMO Multiple Input Multiple Output
MPLS Multiprotocol Label Switching
MSAN Multi Service Access Node
NPC Normalized Power Consumption
OLT Optical Line Termination
ONT Optical Network Termination
POTS Plain Old Telephone Service
PSTN Public Switched Telephone Network
QoS Quality of Service
VAC Ventilation Air Conditioning
VDSL Very high speed Digital Subscriber Line
VDSL2 Second generation VDSL
4 Definition of power consumption
4.1 Definition of power consumption per line of broadband
network equipment
The power consumption of broadband telecommunication network equipment is defined as:
P = P / N
BBline BBeq subscrib-lines
Where:
P is the power consumption (in W) of a fully equipped broadband network equipment, measured at the electric
BBeq
power input interface, placed at the premises of the operator or the equipment supplier, which connects multiple
broadband subscribers to a backbone. P is measured in determined environmental conditions defined in
BBeq
clause 5.1.1.
P is the power consumption per line in W of the broadband network equipment for which the limits are defined in
BBline
the present document.
N is the maximum number of subscriber lines or ports served by the broadband network equipment under
suscrib-lines
test.
4.2 Definition of normalized power consumption per line for
broadband network equipment
In addition to the power consumption P that is defined for the equipment, an indication of global network power
BBline
performance "Normalized Power Consumption" (NPC) might be given. The definition of the NPC can be found in
TR 102 530 [i.5].
ETSI
8 Final draft ETSI ES 203 215 V1.1.1 (2010-09)
For DSLAM equipment, the NPC is an indicator of the amount of power required to transport 1 Mbps of data over a
predefined reference lengths in table 1, it is based on the bitrate and reach at full-power state as defined in the
measurement method (see clause 5.2.2).
For OLT equipment, the NPC is an indicator of the amount of power required to transport 1 Mbps. Since the power
consumption of OLT is not directly related with optical fibre length, no reference optical fibre length is defined.
NPC = 1 000 x P / bitrate
BBline
NPC is expressed in mW/Mbps. Bitrate is the downstream net activation data rate expressed in Mbps.
This NPC enables comparison of same technologies from different equipments and/or vendors, as well as of similar
technologies such as evolutions or extensions (e.g. VDSL2 Vectoring) regarding the efficiency of transporting
information (in terms of power). It shall be calculated at relevant reference loop lengths for each technology, and as
such it should be clear that using NPC to directly compare technologies which use different reference loops or different
access technologies shall not be promoted. These reference loops are derived from the typical or targeted working
conditions of these technologies and are given in the clause on measurement methods (clause 5.2.2).
NOTE: Using the NPC to compare the different working states (e.g. L0 with L2 or L3) is not recommended as the
intention of some of these working states is to save energy at times of no or low-rate transmission,
i.e. when there is no need to transmit high data rates.
4.3 Power consumption taking into account the low-power
states
The low-power states are intended to reduce the power consumption during periods of no or minimal traffic needs
(e.g. low data-rate applications or control signalling only). When these low-power states are used, the achievable power
consumption reduction can be estimated by using profiles based on user traffic assumptions, as illustrated in annex C.
NOTE 1: Usage of power-saving states.
A number of power-saving states are defined in the DSL standards (L2, L3, ITU-T Recommendations
G.992.3 [i.2] and G.992.5 [i.3]). These power-saving states are implemented, both in the Network
equipment subject of the present document and the CPE/end-user equipment deployed at the premises of
the user of the broadband line; this will enable the operator to use these to further limit the power
consumption of the equipment. Further study is required to optimize the way in which the low-power
states are controlled. In particular, to determine the levels of interference that might arise due to the
fluctuating crosstalk caused by frequent multi-state power transitions.
NOTE 2: Additional power saving solutions. A number of additional power saving solutions are available. Some of
these are listed below. However the list is not complete and both the developers and users of broadband
network equipment are encouraged to investigate and introduce new power saving solutions:
• Politeness algorithms.
• Dynamic Spectrum Management.
• Boards optimized for remote applications (reduced line power).
ETSI
9 Final draft ETSI ES 203 215 V1.1.1 (2010-09)
5 Measurement methods
This clause describes the methods to measure the power consumption of broadband network equipment and also gives
the conditions under which these measurements shall be performed.
5.1 General requirements
5.1.1 Measurement conditions
The power measurements shall be performed in a laboratory environment under the following conditions:
• Room Temperature: 25 °C ± 2 °C.
• Room Relative Humidity: 30 % to 75 %.
• Operating voltage:
- DC Powered Equipment: According to EN 300 132-2 [2], -54,5 V ± 1,5 V for nominal voltage of -48 V
DC powered equipment. Equipment using voltage other than -48 V DC shall be tested at ± 1 % of the
nominal voltage.
- AC Powered Equipment: According to IEC 60038 [4], 230 V ± 1 % for nominal voltage of 230 V AC
and frequency 50 Hz ± 1 %.
• Minimum Measurement Duration: Equipment shall be allowed to stabilize to get stable power measurement. If
power varies over the measurement interval time, an average of measurement shall be calculated:
- For DSLAM equipment, wait 1 minute to settle bitswap and wait until final trimmed power level is
achieved in L2 mode.
- For OLT equipment, wait till OLT and all connected ONTs finish activation procedure.
5.1.2 Measurement instruments requirements
All measurement instruments used must be calibrated by counterpart national metrology institute and within calibration
due date, and the measurement tolerance must be within ± 1 %:
• Power Source: Power sources used to provide power to the equipment under test shall be capable of providing
a minimum of 1,5 times the power rating of the equipment under test.
• Power Measurement Instrument: Power measurement instrument (such as voltmeter and amperometer or
power analyzer) shall have a resolution of 0,5 % or better. AC power measurement instrument shall have the
following minimum characteristics:
1) A minimum digitizing sample rate of 40 kHz.
2) Input circuitry with a minimum bandwidth of 80 kHz.
3) It shall be capable of accurate readings of waveforms having. Crest Factor up to at least 5.
5.1.3 Considered equipment
The following items are considered part of the broadband network equipment and therefore their power consumption
shall be taken into account to get the total power consumption (P ) of the
...

SLOVENSKI STANDARD
01-julij-2016
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Environmental Engineering (EE) - Measurement Methods and Limits for Power
Consumption in Broadband Telecommunication Networks Equipment
Ta slovenski standard je istoveten z: ETSI ES 203 215 V1.2.1 (2011-10)
ICS:
19.040 Preskušanje v zvezi z Environmental testing
okoljem
33.040.01 Telekomunikacijski sistemi Telecommunication systems
na splošno in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
...