A few weeks ago, the U.S. Environmental Protection Agency (EPA) published a new ENERGY STAR® draft specification (Draft 1, Version 3) aimed at improving the efficiency of end-user telephony equipment.
A lot has happened in this market since the current spec became effective in 2008. This proposed spec attempts to cover the product’s evolution since that time. Program changes include:
- Product scope expansion to include Voice over IP (VoIP) and hybrid telephones, including conference phones
- Tightening of efficiency requirements of traditional products
- Incentives for products that incorporate off-mode, proxying, and the Energy Efficient Ethernet (IEEE 802.3az)
The products covered and excluded in the draft are shown in Table 1 below.
Table 1. Draft 1, Version 3 Proposed Telephony Product Type Coverage
Source: ENERGY STAR
While the current program spec only requires products to comply with standby power levels and external power supply (EPS) level V performance*, the new draft proposes a more comprehensive approach, regulating power consumption based product type, capability, added functionality, and power management incentives. Besides meeting the current EPS efficiency levels, a product’s power consumption must be equal to or less than a “Maximum Average Power” level, determined by the equations below:
Equation 2: Maximum Average Power
Equation 3: Off Mode Incentive
PP_ON is the power consumed when the product is 1)connected to power and a telephone line (or other physical or wireless network connection), 2) capable of receiving a call, 3) not receiving or transmitting sound, and 4) “hung-up” and the speakerphone is not engaged; POFF_INCENTIVE is calculated for VoIP and hybrid telephones that ship with an Off Mode, using Equation 3; PBASE is the base power allowance (W) found in Table 2; PADD is the power allowance (W) found in Table 3 for a total of n such allowances; PPROXY is an additional proxy incentive (W) found in Table 4; POFF is the power consumed when the product is connected to power and a telephone line (or other physical or wireless network connection) but is not capable of receiving a call without external stimulus.
Table 2. PBASE Allowances
|Product Type||PBASE (watts)|
|Tested VoIP and Hybrid Cordless, Wireless, and Corded Telephones||2.0|
|Tested VoIP and Hybrid Conference Telephones||2.5|
|Analog Cordless, Corded, and Conference Telephones||0.9|
|Additional Handsets Analog and VoIP||0.3|
Table 3. Additional Functional Adders
|Feature||Power AllowancePADD (watts)||Notes|
|Gigabit Ethernet (1000Base-T)||1.0||Applies if the telephone has one or more Gigabit Ethernet Ports|
|IEEE 802.3az compliant Gigabit Ethernet||0.2||Telephony products that ship with IEEE 802.3az compliant Gigabit Ethernet ports may claim a 0.2 watt additional incentive|
Table 4. Additional Functional Adders
The EPA plans to publish the final specification and test methods drafts by the end of this summer, allowing a program effective date by mid-2014.
A stakeholder webinar to discuss the proposed draft will be held on Tuesday, July 9th. To register, send an email request to email@example.com by Wednesday, July 3rd. Stakeholder comments must be submitted by Friday, July 19th. All materials related to the test method and specification development can be downloaded by clicking here.
*Per ENERGY STAR EPS Version 2 (for more information, click here).