Tag: 802.11af specification

NETGEAR offers an affordable 8-port Gigabit unmanaged switch with Power Over Ethernet Plus on all ports

simonmackay 14/02/2018 Network hardware design, Network Management, Special offer No Comments

From the horse’s mouth

NETGEAR GS108PP ProSafe Gigabit Unmanaged 8-port Switch with Power-Over-Ethernet Plus

NETGEAR

My Comments

Power Over Ethenrt concept

Increasingly Power-Over-Ethernet technology is being offered as a product-differentiating feature for small-business and installer-grade Ethernet switches. This is where these switches are able to supply power to network devices using the same blue wire that connects them to the wired Ethernet network.

The feature is appealing towards Wi-Fi access points, VoIP desk telephones and IP-based videosurveillance cameras as a way to power them without having to locate a power outlet near these devices. It also provides a form of central power control for such devices such as assuring access to battery backup for a cluster of devices or to allow a managed Ethernet switch to provide programmatic power control from its user interface.

But a lot of them offer this technology to some, usually half, of the ports available on them. TrendNET previously offered to the American market an eight-port Gigabit unmanaged switch with Power-Over-Ethernet Plus on all ports for US$280 when it came out.

But NETGEAR are offering the GS108PP switch which is a similar device with Power-Over-Ethernet Plus on all eight Gigabit ports for AUD$219 recommended retail price. MWAVE, an independent online computer dealer serving the Australian market. has put downward pressure on the price of this device class offering this Netgear unit with a 123W total power budget for a street price of AUD$169. As well, this model can be mounted on a desktop or a wall thanks to keyhole slots on the side but also comes with a set of rack ears to permit installation in a standard equipment rack.

It has been something associated with NETGEAR where they have offered affordable network-infrastructure hardware fit for small networks. This was primarily in the form of highly-compact affordable five-port and eight-port Ethernet switches with the basic expectations of their era. Gradually as newer network standards came along, NETGEAR would eventually be the first to roll them in to these affordable five-port or eight-port devices. Let’s not forget that they offered managed Ethernet switches that implement Web-based management and “automatic-transmission” operation for quality-of-service management when it comes to voice or video traffic. There was even the Nighthawk S8000 Gaming and Multimedia Switch with the same abilities as one of these business-grade switches but in a housing that would please gamers or not look out of place in a home-entertainment centre.

The next step for NETGEAR to take with some of these technologies is to package and present them to appeal to home users and small businesses while making them affordable. It can also be about endorsing and supporting connectivity and management standards that permit simplified setup of Ethernet-based network infrastructure.

A “homeplug” with Power Over Ethernet now for the British market

simonmackay 04/09/2013 HomePlug powerline networking, Network Connectivity Devices, Network Management No Comments

Article – from the horse’s mouth

Solwise

Value – Solwise HomePlug 500AV with Power over Ethernet – PL-500AV-POE (Product link)

Previous coverage of similar devices

At last HomePlug AV and Power-Over-Ethernet in one device

My Comments

Previously, I had written an article on this site about Asoka releasing a HomePlug AV-Ethernet bridge that provides power to connected devices using the 802.3af Power-Over-Ethernet technology. This adaptor, which is available to fit US power sockets, can use the one Ethernet cable to power an access point, VoIP telephone, IP camera or similar device as well as being a data conduit to that device.

Now Solwise in England have raised the ante with this class of device when they offered one that plugs in to UK power outlets and sold to the UK market. Here, the PL-500AV-POE implements the HomePlug AV500 technology rather than the HomePlug AV technology on the powerline network side of the equation. If the HomePlug segment is based around HomePlug AV500 hardware, it could lead to higher data throughput speeds which would benefit high-resolution IP surveillance cameras or 802.11n access points.

The same company ask GBP£59.80 including VAT for this device but they are not short on Ethernet devices that can be powered from this “homeplug”. Here, they have a single-band 802.11g/n dual-stream access point that looks like a smoke detector for GBP£73.25 or a dual-band dual-stream 802.11a/g/n access point for GBP£189.14. There is also a basic “dome” IP camera for GBP£144.02 or a traditional-style auto-zoom camera for GBP£167.17 for a country that places emphasis on video-surveillance.

What I see of this is that at least some more manufacturers are raising the game for HomePlug powerline devices that integrate 802.3af or 802.3at Power-Over-Ethernet technology in a way as to underscore the fact that the powerline network and the Power-Over-Ethernet technology complement each other rather than exist as competing technologies.

Super Wi-Fi or the use of vacated VHF/UHF radio spectrum for wireless networks – is it the right application?

simonmackay 29/09/2010 Network Management, Rural Broadband Access No Comments

Super Wi-Fi: The Great White Hype? – SmallNetBuilder

My comments

What is happening with the VHF/UHF radio spectrum now

Over the last few years, various countries are moving their over-their-air television broadcasting setups from analogue (NTSC/PAL) technology to digital (ATSC/DVB-T) technology and during this transition phase, various tranches of radio spectrum have been opened up in the VHF Band 1 and 3 bands and the UHF bands. This is due to the digital technologies being more spectrum-efficient than the analogue technologies they are replacing.

What the USA is trying to do with their vacated VHF and UHF spectrum is to use it for long-range data networks rather than reuse it as space for more broadcasters to operate in. This is compared to what UK, Europe and Australia are doing with this spectrum where they reuse it, especially VHF Band 3, for DAB-based digital radio broadcasting and / or “packing out” the UHF Band with more DVB-T TV transmitters.

As well, in most of these countries, certain channels of the UHF band are used for 2-way CB radio activity and for short-range radio applications like wireless microphones or remote controls.

What does the US “Super Wi-Fi” concept offer?

This concept applies most of the media-specific technologies implemented in the 802.11a/b/g/n Wi-Fi networks to the use of vacant VHF and UHF spectrum. This is intended to provide a wireless data path alternative to WiMAX or 3G cellular data technologies for providing wireless-broadband service.

It would require the use of fixed base stations that can work in the VHF Bands and the lower frequencies of the UHF bands as well as easily-relocatable access points that work on the higher frequencies of the UHF band. There are a lot of requirements set by the FCC in order to curb unnecessary interference such as use of geolocation technology and look-up tables to determine the frequency for the base stations to tune to.

The SmallNetBuilder article had mentioned that the technology would only be suited for long-range work such as a cost-effective method of providing a rural area with real broadband Internet. It wouldn’t work well in increasing the throughput of broadband service in an urban area because most of the spectrum would be used by the TV channels. They also looked in to the issue of channel-bonding as a way of increasing data throughput but whether this could be seen as an option to be used in the standards.

Conclusion

I would concur that technologies that use surplus broadcasting spectrum would be better implemented towards working as a way of providing broadband to difficult-to-serve rural areas. Here, they would work as a way of bringing the service to the consumer’s property and that we use regular 2.4GHz or 5GHz Wi-Fi technology for in-property wireless networking.

As well, I would prefer the broadcasting spectrum the be used to attain reliable reception of radio or television broadcast signals or provide improved broadcasting services. This step as well as the previously-mentioned one should achieve the goal of making sure that people who live or work in the country are not second-class citizens.