So, I was speaking today with a revenue duty specialist about the definition of products and something came up which disturbed me and it was the EC definition of a modem:
Modems modulate and demodulate outgoing as well as incoming data signals.
This enables bidirectional communication for the purposes of gaining access
to the Internet. Examples of such modems are: V.34-, V.90-, V.92-, DSL- or
cable modems. An indication of the presence of such a modem is an RJ-11
Devices performing a similar function to that of a modem but which do not
modulate and demodulate signals are not considered to be modems.
Examples of such apparatus are ISDN-, WLAN- or Ethernet devices.
An indication of the presence of such a device is an RJ 45 connector.
It seems to me that the definition of a modem is rather messed up and this paragraph is trying to achieve something else than the wording says. If any technology student saw this they would be very confused because WLAN (Wifi) is clearly modulated and so are ISDN and Ethernet to some extent.
My brother write a blog entry yesterday about home networking and powerline technology. And without knowing, he’s actually commenting on a subject dear to my professional heart.
My company produces very nice DRT (digital television recorder / PVR) products, some of the best in the industry (so the man from Sony tells me). We are really trying to lead the industry when it comes to this product range and my job is to help influence that. It is my feeling, and that of many others, that there will be a consumer device, probably in the lounge, probably grown out of a DTR product and probably it will extend it’s reach well beyond the lounge. My first hope is to secure support for DLNA, this technology makes it easy for network connected devices to share resources or control each other. From a media point of view this means that content can be streamed from one device to another without complex user intervention.
Power line technology is a lovely idea, unfortunately from a manufacturers perspective to integrate it into a product is very expensive. The cost of the module is easily more than the cost of an HD decoder chipset. This means that I struggle to justify putting it into a product when I know that the majority of consumers will never actually use the technology. I am also a bit dubious about putting signals over wires that weren’t designed to handle them, the mains in the UK is about 240V at 50Hz, the cable is designed for that and works well enough. But when you start putting complex noise signals at wide bandwidth over them you are going to have some effect at some point. Powerline delivered broadband already has a huge objection from the HAM radio groups and radio astronomy groups, thousands of low cost PLT home devices can’t be much better (even if they are lower power).
We are however striving to add ethernet ports to as many products as possible and we are working on some decent software to exploit it to the full. I do conceed however using these plug adaptors could be an easy way to avoid the fact that wireless never delivers even close to it’s stated bandwidths and most consumers don’t want to rewire their house for Cat-5e/6. Although remember that current electrical installation requirements in the UK now often require a professional electrician to do the install otherwise you can’t sell your house.