There are two competing and incompatible standards woodbury outlet mall for ADSL. The official ANSI

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The DSL technology and there are several subspecies, however, that it is now the most commonly used is the so-called asymmetric digital woodbury outlet mall subscriber line (ADSL Asymmetric Digital Subscriber Line). woodbury outlet mall As its name suggests, the basic characteristics of this type of DSL performance is asymmetry. It seems it is the most interesting DSL performance for residential and business customers.
Asymmetry, in fact, means the possibility of a much faster transmission of data downloaded-in or transfer of data from the network to the user than it is to upload to, or in transmitting data from the user to mreži.Većina the most interesting applications for users on the network are asymmetric ( video on-demand video on demand, remote access to local area networks LANs, Internet access, multimedia access, home shopping, etc.), where a lot more users "taken" from the network rather than making them into it "sends". This asymmetry makes ADSL ideal for this application.
Copper woodbury outlet mall wire can transmit much more communication woodbury outlet mall than what is contained in a telephone conversation - that can work with a much larger range of frequencies than that required woodbury outlet mall for telephone traffic. ADSL uses this excess capacity for the transmission woodbury outlet mall of information over the wire without disturbing phone conversation woodbury outlet mall that takes place in parallel. The entire mechanism is based on the fact that the proper frequencies associated with specific tasks.
ADSL technology divides the available bandwidth ordinary copper coins into three parts. Voice signaling requirements limited bandwidth, because the human ear can register only sounds in the range of 20 Hz to 20,000 Hz (or 20 kHz), which represents only a portion of the available bandwidth copper coins.
The main scope of which is scheduled for telephone communication, a special filter or a splitter is separated from the other scope method that guarantees that the telephone conversation take place even if the ADSL fails. The second frequency range transmitted data signal that sends information from users to its main page on the Internet (upload). Third bandwidth is a high-speed connection to the user (download), the maximum woodbury outlet mall speed of 8 Mbit / s On the next picture you can see visually represented frequency bands that ADSL uses.
There are two competing and incompatible standards woodbury outlet mall for ADSL. The official ANSI standard for ADSL is a system woodbury outlet mall called Discrete woodbury outlet mall MultiTone or DMT. According to the manufacturers of equipment, most of today's installed ADSL equipment uses DMT. Previous standard was called Carrierless Amplitude / Phase (CAP) system, which is mainly used in early versions of ADSL.
CAP works by dividing the signals on the telephone line into three separate woodbury outlet mall frequency ranges: telephone traffic woodbury outlet mall is transmitted in the range of 0-4 kHz, as is the case in all telephone networks. Upstream woodbury outlet mall (from the user to the server) channel is transmitted in the range from 20 to 160 kHz. Downstream (from the server to the user) channel begins at 240 kHz