ENERGY STAR® Program Requirements
Product Specification for Telephony
Test Method
Rev. Sep-2011

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1 OVERVIEW

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The following test method shall be used for determining product compliance with requirements in the
ENERGY STAR Eligibility Criteria for Telephony.

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2 APPLICABILITY
ENERGY STAR test requirements are dependent upon the feature set of the product under evaluation.
The following guidelines shall be used to determine the applicability of each section of this document:

7The test procedures in Sections 4 through 6 shall be performed on all products.

8The test procedures in Section 7 shall be performed on VoIP phones.

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The test procedures in Section 8 shall be performed on VoIP phones with computerconnectivity.

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3 DEFINITIONS

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Unless otherwise specified, all terms used in this document are consistent with the definitions in the
ENERGY STAR Eligibility Criteria for Telephony.

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Note: For the purposes of initial discussion, the acronyms and definitions below have been included in
the test method. Some of the definitions are based on those in the current eligibility criteria for telephony,while others are new and have been included to permit testing of VoIP phones. All definitions andacronyms shall eventually be moved to the eligibility criteria upon the start of Draft 1 development.

18A) Acronyms:

191) Ac: Alternating Current

202) C: Celsius

213) CAT 5/6: Category 5 or 6 cable, the standard cables used for Ethernet connections

224) Dc: Direct Current

235) EPS: External Power Supply

246) Hz: Hertz

257) kHz: Kilohertz

268) IEC: International Electrotechnical Commission

ENERGY STAR Program Requirements for Telephony – Test Method (Rev. Sep-2011)

Page 1 of 9279) IP: Internet Protocol

2810) PoE: Power over Ethernet

2911) PSE: Power Sourcing Equipment

3012) SIP: Session Initiation Protocol

3113) SST: Spread Spectrum Technology

3214) UUT: Unit Under Test

3315) V: Volts

3416) VoIP: Voice over Internet Protocol

3517) W: Watts

36B) Product Types:

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1) Telephone: A commercially available electronic product whose primary purpose is to transmit andreceive sound over a distance using a voice or data network. For the purposes of thisspecification, Telephones include Voice over Internet Protocol, Analog, and Cellular telephones
as well as Answering Machines and Combination Units. Telephones may also be referred to asphones.

42432) Analog Telephone: A Telephone that converts sound into analog waveforms and connects to avoice or data network through an RJ11 phone jack.

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453) Cellular Telephone: A Telephone that uses radio waves to connect to a cellular telephone
network. This definition does not include VoIP or Analog Telephones

46474) Internet Protocol (IP): The communications protocol used for the transmission of data packets
across multiple networks (e.g., the Internet) as defined by the Internet Engineering Task Force.

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5) Voice over Internet Protocol (VoIP): The transmission of voice and other sound over a network
using the Internet Protocol where sound is converted into IP data packets right on the device fortransmission over a network that uses IP, whether a local network or the internet as a whole.
Devices using VoIP do not plug into a traditional phone jack, but connect to a network through anaccess point, Ethernet or WiFi.

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546) Voice over Internet Protocol (VoIP) Telephone: A Telephone that implements VoIP on board thedevice. VoIP Telephones may be Corded or Cordless Telephones.

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7) Cordless Telephone: A Telephone with a base station and a handset. The charging base of a
Cordless Telephone or its External Power Supply is designed to plug into a wall outlet, and there
is no physical connection between the portable handset and the phone jack.

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8) Corded Telephone: A Telephone with a permanent physical connection between the handset andthe phone jack. This definition includes the combination of a corded telephone and answeringmachine in a single unit.

61629) Additional Handset: A commercially available electronic product with a handset, charging baseand battery, designed for use with multi-handset cordless telephones.

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10) Answering Machine: A commercially available electronic product, also known as a telephoneanswering device (TAD), whose purpose is to provide analog or digital storage of outgoing andincoming telephone messages by connecting to the telephone line between a phone and phone
jack. An answering machine or its power supply is designed to plug into a wall outlet.

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11) Combination Cordless Telephone/Answering Machine (Combination Unit): A commerciallyavailable electronic product in which a cordless telephone and answering machine are combined
into a single unit, and which meets all of the following criteria:

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a. The answering machine is included in the base station of the cordless telephone;71
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b. It is not possible to measure the power consumption of the two components separately
without removal of the telephone casing;

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c.

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d. There is no physical connection between the portable handset and the phone jack.

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The combination unit is connected to a wall outlet through a single power cable or external
power supply; and

12) Multi-Handset Technology: A cordless telephone or combination unit that can support multiple
additional handsets.
C) Operational Modes:
1) Partial On (Sleep) Mode: The mode that may persist for an indefinite time when a phone isconnected to a power source and is capable of receiving a call. The phone is not receiving ortransmitting a conversation or recharging a battery, and the handset is “on the hook”.

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Note: This mode was formerly referred to as Standby Mode.

832) On Mode: Comprises the Idle and Operation Modes.

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Note: This set of modes was formerly referred to as Active Mode.

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a. Idle Mode: The mode in which the phone is connected to a power source and is “off thehook”. Though not necessarily transmitting and receiving data, a dial tone should bepresent.

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b. Operation Mode: The mode in which the phone is connected to a power source and isreceiving and/or transmitting telephone conversation and/or playing/recording amessage.

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c.

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Charging Mode: The mode in which the phone is connected to a power source and isrecharging a battery.

3) Off Mode: The mode in which the phone is connected to a power source but is not performing any
Partial On or On Mode functions.
Note: The modes of operation have been re-named in accordance with the proposed IEC 62542:
Standardization of environmental aspects - Glossary of terms. This proposed standard seeks to unify
mode definitions for the increasing number of electronic products by developing a structure of genericmode categories (On Mode, Partial On Mode, and Off mode) and function types (Primary, Secondary,
and Tertiary) that define them. The specific functions considered Primary or Secondary will vary by
product, and will have to be listed in a product-specific document, as has been done above.

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More generally, the IEC 62542 structure is illustrated below:

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On Mode: Condition during which the equipment provides at least one primary function or can promptly
provide a primary function. Sub Modes:

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Operation Mode: Form of active mode during which the equipment is performing at least one primaryfunction.

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Idle Mode: Form of active mode during which the equipment can promptly provide a primary function
but is not doing so.

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Partial On Mode: Condition during which the equipment provides at least one secondary function but nota primary function.

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Off Mode: Condition during which the equipment only provides tertiary function(s).

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Disconnected Condition: Condition of the equipment during which all connections to power sources
supplying the equipment are removed or interrupted and no functions depending on those power sources
are provided.

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Primary Function: Function providing the intended purpose.

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Secondary Function: Function that enables, supplements or enhances a primary function.

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Tertiary Function: Function other than a primary or a secondary function.

120D) VoIP System Equipment:

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1) Session Initiation Protocol (SIP): A signaling protocol widely used for controlling communications
sessions, such as those created by VoIP systems.

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2) Power over Ethernet (PoE): A system for powering devices over an Ethernet connection. Often
the connection will simultaneously transmit data and power.

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3) Router: An electronic device used to create a network and connect multiple networks together.
The router can create a local network with devices connecting either through physical connection
or wirelessly. The router can then connect this network to other networks (e.g., the Internet or alarger network).

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4) Switch: An electronic device used to connect elements of a network. Generally, switches only
support wired connections.

1315) SIP Server: A server running the SIP.

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6) Power Sourcing Equipment (PSE): An electronic device, such as a switch, that sources (supplies)
the power on the Ethernet cable for PoE devices.

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134E) Additional Terms:

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1) External Power Supply (EPS): A component contained in a separate physical enclosure external
to the telephony product casing and designed to convert line voltage ac input from the mains tolower dc voltage(s) for the purpose of powering the telephony product. An External Power Supply
shall connect to the telephony product via a removable or hard-wired male/female electricalconnection, cable, cord or other wiring.

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2) Spread Spectrum Technology (SST): A communication technique whereby the carrier frequency
of a signal is automatically and rapidly changed to provide enhanced transmission range,
extendable portable numbers, and additional security. This definition includes direct sequence(e.g., digital spread spectrum or DSS) and frequency hopping.

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3) Product Family: A group of product models that are (1) made by the same manufacturer, (2)subject to the same ENERGY STAR qualification criteria, and (3) of a common basic design.
Product models within a family differ from each other according to one or more characteristics orfeatures that either (1) have no impact on product performance with regard to ENERGY STAR
qualification criteria, or (2) are specified herein as acceptable variations within a product family.
For Telephony, acceptable variations within a product family include:

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Color, or

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Housing.

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1534) Unit Under Test (UUT): The specific sample of a representative model undergoing measurement
which includes the base product (the phone) and any accessories packaged with it.

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4 TEST SETUP

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A) Test Setup and Instrumentation: Test setup and instrumentation for all portions of this procedure shallbe in accordance with the requirements of IEC 62301, Ed. 2.0, “Household Electrical Appliances –Measurement of Standby Power,” Section 4, “General Conditions for Measurements”, unlessotherwise noted in this document. In the event of conflicting requirements, the ENERGY STAR Test
Method shall take precedence.

160B) Ac Input Power:

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1) Products intended to be powered from ac mains shall be connected to a voltage source
appropriate for the intended market, as specified in Table 1

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2) Products intended to be powered from dc through an EPS or PSE shall first be connected to an
EPS or PSE and then connected to a voltage source appropriate for the intended market, as
specified in Table 1.

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Table 1 – Input Power Requirements
Maximum
Total
Harmonic
Distortion

Frequency

Frequency
Tolerance

MarketVoltage

VoltageTolerance

North America, Taiwan

115 V ac+/- 1.0 %

2.0 %

60 Hz

+/- 1.0 %Europe, Australia, New Zealand

230 V ac+/- 1.0 %

2.0 %

50 Hz

+/- 1.0 %Japan

100 V ac+/- 1.0 %2.0 %50 Hz/
60 Hz+/- 1.0 %167
168C) Ambient Temperature: Ambient temperature shall remain between 18° C to 28° C, inclusive, for theduration of the test.

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D) Relative Humidity: Relative humidity shall be from 10% to 80%.

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E) Alternating Current (Ac) Power Meter: When measuring ac power, power meters shall possess thefollowing attributes:

1721) Crest Factor:

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An available current crest factor of 3 or more at its rated range value; and

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Lower bound on the current range of 10mA or less.

1752) Minimum Frequency Response: 3.0 kHz

1763) Minimum Resolution:

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0.01 W for measurement values less than 10 W;

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0.1 W for measurement values from 10 W to 100 W; and179iii) 1.0 W for measurement values greater than 100 W.

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F) PoE Power Meter: When measuring PoE power, power meters shall be capable of measuring Powerover Ethernet connections directly from the Category 5 or 6 cable (CAT5/6 cable), regardless of the
PoE method used (i.e., Mode A, Mode B, or Gigabit PoE). PoE Power Meters may be technician tools
and are not required to record data.

184G) Measurement Accuracy:

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1) Power measurements with a value greater than or equal to 0.5 W shall be made with anuncertainty of less than or equal to 5% at the 95% confidence level.

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2) Power measurements with a value of less than 0.5 W shall be made with an uncertainty of lessthan or equal to 0.1 W at the 95% confidence level.

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Note: Per initial investigation, PoE Power Meters available on the market for measuring PoE tend to havelower resolution and, potentially, lower accuracy than Ac Power Meter counterparts. Stakeholders areencouraged to comment on the use and availability of PoE Power Meters for measuring power directly
over an Ethernet cable.

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Additionally, stakeholders are encouraged to comment on the feasibility of using power injectors tomeasure power consumption given the inherent issues (reduced efficiency, increased test burden, etc.) inmeasuring the dc line current inline between the UUT and the PoE power source.

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5 TEST CONDUCT

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5.1

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A) As-shipped Condition: The UUT shall be in new condition, and shall be tested in its “as-shipped”
condition.

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B) Battery-powered Products: If the UUT contains rechargeable batteries, or can be integrated withanother device that contains rechargeable batteries, all batteries shall be fully charged prior to thestart of testing and shall remain in place for the duration of testing.

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C) Measurement Location: All power measurements shall be taken at a point between the ac powersource and the UUT.

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D) VoIP Server: Any standard configuration and/or equipment for creating a VoIP backend system ispermitted. The only requirement is that the UUT have a dial tone and be capable of receiving andmaking a phone call from within the local VoIP server to within the local VoIP server. A valid VoIP
route to outside the local VoIP server is not required.

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E) Allow five (5) minutes for power levels to stabilize after plugging all necessary connections into the
UUT, including power and network, before performing the first test.

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Note: Are there any undesired consequences which might arise from allowing such a broad range of
VoIP systems? Would more specific requirements limit the ability to test the phone itself or place undue
burdens on test houses? Stakeholders are encouraged to comment on the infrastructure requirements
laid out in this test procedure.

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5.2

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The method used for measuring and recording power will vary depending on the UUT’s capabilities. If the
UUT supports PoE functionality, measure according to the PoE Measurement Method. If the UUT lacks
PoE functionality, measure according to the Ac Power Measurement Method.

219A) PoE Measurement Method: The method given below shall be used for all PoE power measurements.

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Note: The PoE Measurement Method is derived from the “direct meter reading method” described inInternational Electrotechnical Commission (IEC) 62301 Ed. 2.0 section 5.3.4. While the scope of IEC
62301 includes only ac power measurements of certain, standard voltage levels, the direct meter reading
method is suitable for this direct current (dc) application.

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1) For 1 minute following the first reading, take an additional power measurement reading at
10 second intervals. This will result in seven readings.

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2) If the difference in power between any of the seven readings and their average is less than 10%of the average (arithmetic mean) value, report the average.

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3) If the above criterion is not met, and the difference in power between any of the seven readings
and their average is greater than or equal to 10% of the average value, additional measurements

General Test Conduct

Power Measurement Method

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shall be taken. Continue to take measurements 10 seconds apart, until seven consecutive
measurements meet the criterion. The result is the average of the seven consecutive values thatmeet the condition.

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B) Ac Power Measurement Method: The method given below shall be used for all ac power
measurements.

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1) Set the meter to begin accumulating true power values at a frequency greater than or equal toone (1) reading per second. Accumulate power values for 1 minute and record the average value(arithmetic mean) of power observed during that 1 minute period.

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6 TEST PROCEDURES FOR ALL PRODUCTS

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6.1

Unit Under Test (UUT) Preparation

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1) Set up the UUT in accordance with its instructions for use, except where these conflict with therequirements of the ENERGY STAR Product Specification. If no instructions for use are available,
then factory or “default” settings shall be used.

2432) Power Meter Setup:

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a. If the UUT supports PoE functionality, connect the UUT to the PoE power meter and connect
the PoE power meter to a PoE port on a suitable switch. A suitable switch is defined as aswitch that:

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Supports all modes of PoE that the phone can support.

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Supports the maximum network speed of the UUT’s network connection

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Note: What qualifies a “suitable switch” will be further clarified by stakeholder input and further testingand verification.
b. If the UUT does not support PoE functionality, set up the UUT in its standard configuration,utilizing any included EPSs, if applicable. Connect an approved power meter to an ac line set
to the appropriate voltage and frequency as specified in Section 4.B). Plug the UUT into themeasurement outlet on the power meter. No power strips or UPS units shall be connected
between the UUT and the meter. Connect the UUT to a suitable switch/router or an external
phone jack if it has a phone line connection. In the case that a working phone line is notavailable, a ringdown simulator may be used as a replacement. If the UUT is a cordless VoIP
Telephone, ensure that a wireless connection is established between the UUT and the SIP
Server.
3) VoIP Telephones:

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a. Set up the switch according to manufacturer instructions and connect it to the SIP server.

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b. Configure the SIP server and UUT to prepare the phone for making and receiving calls locallyto the SIP server and the VoIP system the SIP server implements.

2644) Verify that there is a dial tone.

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5) On a phone with no handset, the speaker shall be used. The volume should be such that the dial
tone is barely audible to the tester’s ear to limit the impact of the speaker on testing conditions.

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2676) Measure and record the ac input voltage and frequency.

2687) Measure and record the test room ambient temperature.

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6.2

Measuring Partial On Mode Power2701) Ensure the UUT’s handset is in the “on hook” position and that the speakerphone is not activated.

2712) Measure and record power according to the applicable method in Section 5.2.

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7 TEST PROCEDURES FOR VOIP PHONES

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7.1

Measuring Idle Mode Power

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1) Ensure the UUT’s handset is in the “off hook” position. Unless there is no handset, do not use thespeakerphone function for this test. Verify that there is a dial tone.

2762) Measure and record power according to the applicable method in Section 5.2.

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Note: The dial tone may not last the duration of this test. Would an active mode test (measuring theenergy consumption during a representative conversation) be more suitable? Would an active mode test
be stable enough for the direct meter reading method?

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8 TEST PROCEDURES FOR VOIP PHONES WITH COMPUTERCONNECTIVITY

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8.1

Measuring Computer Connectivity

2831) Ensure the UUT’s handset is in the “on hook” position.

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2) Connect a personal computer to the switch port of the UUT, if available. Ensure that the computeris on and that this is the computer’s only network connection. Ensure that the computer
recognizes this connection.

2873) Measure and record power according to the applicable method in Section 5.2.

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