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FREMONT, Calif. (January 25, 2007)
— Phihong USA, the global leader in low-cost Power-over-Ethernet solutions, will ready its PoE products to support the latest specifications defined by the IEEE802.3at task force at its most recent meeting on January 17, 2007. Two significant motions were passed at the meeting, which was attended by member company Phihong; first, preliminary cable ratings have been provided by the Cable Liaison TR42.7 Committee allowing 30 watts at a powered device (PD) for 2-pair and 60 watts at a powered device for 4-pair for cable systems at 45?C, with a maximum recommended installation limit of 5kW per cable bundle; second, classification and timings have been defined, so that a mechanism can identify “.at” and allows the PD to identify that it has a high-power “.at” source.
“Basically, it’s been determined that the sourcing equipment, switch or midspan can detect an ‘.at’ powered device by detecting class-4 devices;
the PD can detect it has a high-power source available by looking for the two-finger classification cycles,” said Keith Hopwood, vice president of marketing for Phihong USA.
“Phihong’s PoE midspans can be compliant to these new requirements with minor firmware updates,” Hopwood continued. “We have a tremendous advantage
with our solutions as we don’t have to wait for new silicon from IC vendors yet to be modified to meet the standard. This gives us at least a nine month head start over any other solution that may
be available.”
Values are still open to change and adjustment, and the standard is still a year away from ratification, but it is now possible to build hardware that meets these requirements
with a high degree of confidence that they will be compliant to the standard.
When implemented as a standard, IEEE 802.3at (PoEPlus) will allow at least 30W of power and potentially up to 60W. Phihong has already developed many products that
deliver high-power PoE, but most customers would prefer a common industry standard for all devices on the market.
Applications that will benefit from the increased IEEE802.3at classifications and voltage include wireless multi-radio access points, Pan Tilt Zoom security cameras, IP phones
with streaming video displays, computer workstations and LCD display panels.
Other emerging applications, including emergency lighting, security system sensors and even medical monitoring, will greatly benefit from combining data and centralized backup
power.
Phihong has been a member of the 802.3at task force since its inception in 2005.
About Power-over-Ethernet
Power-over-Ethernet allows both power and data to be carried over a single Ethernet cable, enabling a device to operate entirely from the power it receives through the data
cable. This eliminates the need for additional wall outlets, so phones can be moved around offices without costly and time-consuming rewiring.
About Phihong
Phihong is the leading supplier of power and accessories to personal electronic, Networking and Home Entertainment OEM’s supplying power, cradles,
hands-free headsets, interface cables and virtually any accessory required for the personal electronic device. With global sales for 2007 expected to exceed $500 million, Phihong has engineering and
manufacturing facilities in North and South America, Taiwan and mainland China. For more information contact Johny Chen, Phihong, 47800 Fremont Blvd., Fremont, CA 94538, or call (510) 445-0100, fax (510)
445-1678, poe@phihongusa.com, or visit http://www.phihong.com.
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