802.3bt and PoE

October 19, 2017 at 8:00 AM

 

In 2003 the first Power over Ethernet (PoE) standard was ratified and today there are more than 100 million devices that use PoE. It is an easy to install solution that provides an integrated and safe power standard for worldwide use. PoE has been deployed in high-volume applications such a wireless access points (APs) and Internet protocol (IP) phones to allow communications equipment to be installed in locations where no AC power source is available or where adding an AC outlet would be too costly.

 

The main limitation of PoE is the amount of power it’s able to supply. Even the most recent standardized version of PoE, 802.3at, is only able to provide a maximum of 25.5 Watts of power to a device. This modest amount of power has limited PoE use in many applications that require more power. Plus, with an increasing number of devices simultaneously connecting to Ethernet networks, the need for more PoE power continues to grow.

 

To address the demand for higher power PoE, the IEEE has been working on a new standard, 802.3bt. This newest standard is slated to debut this year and aims to double or triple the power output of the current PoE standard, 802.3at. IEEE 802.3bt increases the maximum PoE power available by employing all four pairs of the structured wiring of an Ethernet cable. It delivers extended power management capabilities and enables multiple PoE classes while also being backward compatible. Additionally, the 802.3bt standard may also standardize PoE with 10Gbase-T.

 

The ability to provide higher power to end devices will drastically expand the number of applications able to use PoE. This will include high-volume applications such as point-of-sale, building management and industrial control systems. Delivering power and data on the same link with PoE will make life easier, and cheaper for design engineers who will be able to save time and money on installation when compared to running separate data and power lines. It also makes relocation of devices simple and as easy as moving a cable, rather than having to hire an electrician to move or add AC power outlets. 

 

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802.3bt PoE: Providing the Power of Possibility

July 30, 2015 at 10:00 AM

 

The realm of possibilities is expanding for Power over Ethernet (PoE) with the development of 802.3bt PoE.

 

The primary advantage of PoE is that it provides power to communication devices where no AC power source is available.  With no power lines to run, PoE saves on installation costs and makes configuration easier because the power source is within the data cables. More than one million devices are powered by PoE using the same cables that transmit Ethernet data.

 

However, the current version of PoE, 802.3at, peaks at 25.5 Watts, a modest power level that has limited use because many applications require more wattage.

 

The development of the 802.3bt standard will lift those power limitations with capabilities up to 49 Watts! 802.3bt PoE utilizes all four twisted pairs in Cat 5 and Cat 6 Ethernet cables providing more power. 802.3bt will be standardized with support for 10GBASE-T (10 Gbps Ethernet) and will be backward compatible with previous 802.3 versions.


PoE has evolved into a key technology for providing power and data simultaneously.  With 802.3bt PoE offering double, and possibly triple the power, new applications could extend to include 100 million devices worldwide and countless other possibilities.

 

As this new technology emerges, L-com will be developing innovative 802.3bt products and solutions to support your connectivity needs. In the meantime, we continue to support 802.3af and 802.3at applications with a wide range of products that help you save time and money with your wired and wireless networking installations.

 

 Click here to view our 802.3af and 802.3at products.

 

The Benefits of Using PoE

January 1, 2015 at 10:00 AM

 

 

Power over Ethernet (PoE) has been around for awhile now. Chances are you use PoE at work and maybe even at home. PoE has several benefits that we will expound upon in this week’s blog post.

 

PoE provides data and power over a single Ethernet cable which is a pretty brilliant idea. PoE first came to market in 2003 and has flourished since. With its first release 802.3af, PoE was able to provide 15.4 watts of DC power to a connected device such as a PoE enabled IP phone or Wi-Fi access point. The most current implementation of PoE, 802.3at can send a whopping 25.5 Watts of DC power to an end device and can be used with PoE enabled pan, tilt and zoom (PTZ ) IP cameras for surveillance applications.

 

Currently the Institute of Electrical and Electronics Engineers (IEEE) is working on the next generation of PoE called 802.3bt. 802.3bt promises up to at least double or even triple the power output of 802.3at!

 

Possible future applications for 802.3bt include point of sale (POS) credit card readers, building lighting and access controllers, industrial brushless and stepper motor drives, video conferencing systems and more!

 

Well here it is… a breakdown of some of the major benefits of PoE

 

·         Fast deployment of devices and services

·         Flexibility of device placement (no AC wall outlet needed!)

·         Cost savings as new AC outlets do not need to be installed

·         Cleaner installations, no unruly power cables required

 

Here are some typical applications and uses for PoE Splitters and Injectors

 

 

 

Check out L-com‘s extensive line of PoE products to help make your life easier

 

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