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kept in storage: a case history DSL

Giuseppe "Beppe" Cricket, when he says that companies keep their inventions hidden in drawers, unfortunately, tells a sad truth. About Wikipedia
there is a curious story concerning DSL technology that is desired then we know in xDSL, ADSL, VDSL, etc..


Here is the story:

" Digital subscriber line technology was originally implemented as a specific
ISDN, which was later reused as IDSL with
. Connections from higher speeds such as HDSL and SDSL
are developed to expand the range of DS1 services on pair
phone. ADSL designed for the consumer market (ie private citizens
) is designed to run on a BRI ISDN line, which
esssa is itself a form of DSL as well as on a telephone line
analogica.La DSL, like many other forms of communication, comes from a crucial publication
academic Claude Shannon
dating to 1948. The mathematical theory of communication Shannon
place the basic elements of any digital communication:

• a source of information that produces a message,
• a transmitter that operates on the message to create a signal that can be sent through a channel;
• a channel, which means on which the signal carrying the information that contains the message is sent;
• a receiver, which reverts to the signal in the message you want forward;
• a destination, which may be a person or a machine, for which (or who) the message is designed.

Joe Lechleider at Bellcore (now Telcordia Technologies) developed the DSL in 1988 by placing wideband digital signals over the analog voice signal to baseband type (note: In Which a signal transfer method is Transferred Directly in digital form with no modulation) transported between central offices of the telephone company and ordinary users on a conventional twisted pair (note 2 copper wire in short, are twisted to avoid electromagnetic interference). The DSL service was first fonirto rented on a cable without reservations, but when the FCC required telephone companies to lease their lines to competitive providers such as Earthlink, shared lines, DSL became common. "


In this article, which of course has changed, no longer
mentioned that this technology is being developed by Bell in 1988,
but was put off by the cylinder when the companies that provided
connectivity through fiber cables perspective, offered these
connections at affordable prices for all end-users and, therefore, to turn
could do even more competitive prices because
were hanging out the fiber optic cables.
The bastards did to earn so what? Rather than make it all work on the normal telephone cable
, I did put a dedicated time to earn sopra.Insomma
installation, more or less what happened
recently with Telecom which seemed not to know that you could
I would put filters on the ADSL line to talk and surf the Internet using the same
cavo.Purtroppo
not all studying computer science and, anyway, just to have a connection, when the company offers is a
that, we are forced to adapt. : Conventional almost never told about it at all, and when they did, they misrepresented the reality as usual. If you download the video from E-Mule entire event, of Marco Biagi, just as Labor says, do not talk right. We always speak of the law that bears his name. This is a first step.

What I find acceptable, however, but I do not agree how and when (as it is still too early to judge) and I think also too, is, after all, this comparison between the leader and that any politician Beppe Grillo ago. In short, as during the Second World War in Italy we are mainly to be "dead hungry", with a family that was already rich, which is enriched further. Only now have all or rather, unfortunately, should have realized that the war is done, unlike the wars until World War I, which were wars to expand their territories to conquer the resources, raw materials.

Among these, the most important thing is, as everyone can imagine, oil. Oil is running out, the more it goes to fund the more expensive it out. Adding up all the money invested now would probably remove it for a flying car that travels in time and using food waste as fuel, as in "Back to the Future." This, by now should know that even a deaf-mute (with all due respect to the deaf and dumb of course, is that all know that their information is not as easy as those conventionally called normally disabled or able bodied). I always put on probation, because here in Bari there are fascists if you ask him: "sorry but because you are a fascist?" They'll say, "My grandfather was a fascist, even my father. Then you know when was the leader of the trains run on time, there were prostitutes on the streets, you could keep the door open "bla bla bla. These people, among other things, minimize, and in some cases come to deny the disastrous consequences that led to fascism even before the evidence (there are history books). They do not understand that Mussolini at the end of the fair was "a jerk" I'm sorry Alex Mussolini should read this blog for some remote reason, which followed an even more fool him: Hitler. Hitler made an incalculable number of strategic errors. Probably if you had followed closely on a book called the 'Art of War "without groped to make the original, the war was well won. Just to name one, had invented the game fast for the era with which he could win the war and he made them as equip the bombers and, therefore, these fighters were killed because they were not designed for that use.

But you know, it's fashionable to do the originals are trying to do new things. Most of the time though, you end up doing a dick or unconsciously copying something that has already been done. In science, for comparison, is nothing new that we copy nature. Returning to Grillo, he obtains the consent of the masses as well as exploiting the discontent, even Hitler got it.

Now, I do not think Hitler Beppe Grillo, in fact. I'm curious to see what this movement will bring in the concrete.

PS: for a level playing field is also good to remember the damage caused by the ideology of communism, as even in her name several people have died.