broadband

well what i cant understand the purpose of this post ! it is opened for informative purpose or discuss able ! then also thanx for telling about broadband and features that it bears !

These days, "broadband" is a word that is thrown around easily in telecommunications and internet lingo, but the average consumer may not have a clear understanding of how broadband works. It’s easy to understand why; the technology industry even has trouble defining it clearly. So how does broadband work? The online Webster’s dictionary defines broadband as "A class of communication channel capable of supporting a wide range of frequencies, typically from audio up to video frequencies. A broadband channel can carry multiple signals by dividing the total capacity into multiple, independent bandwidth channels, where each channel operates only on a specific range of frequencies." Let’s take a look at each part of the definition to understand how broadband works. The first part of answering the question ‘how does broadband work’ is to think about the phrase a "class of communication channel." We can gather from this that it is different from the normal class of communication channel that we use - our regular phone lines. Phone lines, also called baseband lines, normally carry 29.6kbps of analog data when used for voice communications. But with the advent of the internet, people began to demand faster data transmission. A regular, baseband phone line can carry up to 56kbps of data with the help of a high-speed modem, but without additional technology, that is its maximum capacity. That wasn’t nearly fast enough to keep up with the average person’s demand for and dependency on the internet, which led to the demand for broadband. So how does broadband work? If you think of a baseband line as having one "channel" to send information, you can think of a broadband line as having multiple channels that you use at the same time. Not only that, but a broadband connection is capable of carrying a wider range and type of frequencies, meaning different types of data. And what it can carry, it carries faster. When you drive on the interstate, what happens when there aren’t enough lanes for the number of cars on the road? Everyone is forced to go slower. The same happens with the internet. Think of your connection to the internet as a tunnel that links your computer to the internet. A regular phone line can allow only a small amount of data to pass through at a time. In comparison, a broadband is a wider (or broader) tunnel, allowing a greater amount of information to pass through your connection at one time. The breadth of this tunnel is called "bandwidth." The more bandwidth you have, the faster you can move data. With broadband service, you can also download files that require a great deal of different types of frequencies as well, such as audio and video files. This is a partial answer to the question ‘how does broadband work,’ but the other has to do with the way that broadband services can compress and transmit that data that you’re sending. Go back to the cars on the interstate analogy. What if suddenly all of the cars could be miniaturized? What would that do to the traffic jam? Or if they could use all of the space available in the tunnel - above your head, between cars, etc. Broadband technology not only widens the channels you have, but it uses them more efficiently. Meaning you can get more out of the bandwidth that you have. Broadband makes your internet experience faster and more efficient overall.

Broadband in data communications may have the same meaning as above, so that data transmission over a fibre optic cable would be referred to as broadband as compared to a telephone modem operating at 600 bits per second. However, broadband in data communications is frequently used in a more technical sense to refer to data transmission where multiple pieces of data are sent simultaneously to increase the effective rate of transmission, regardless of actual data rate. In network engineering this term is used for methods where two or more signals share a medium. Various forms of Digital Subscriber Line service are broadband in the sense that digital information is sent over one channel and voice over another channel sharing a single pair of wires. Analog modems operating at speeds greater than 600 bit/s are technically broadband. They obtain higher effective transmission rates by using multiple channels with the rate on each channel limited to 600 baud. For example, a 2400 bit/s modem uses four 600 baud channels (see baud). This is in contrast to a baseband transmission where one type of signal uses a medium's full bandwidth such as 100BASE-T Ethernet.Broadband Internet access, often shortened to "broadband Internet" or just "broadband", is a high data-transmission rate internet connection. DSL and cable modem, both popular consumer broadband technologies, are typically capable of transmitting faster than dial-up modem (56 kbit/s (kilobits per second)). The real maximum download speed of a dial-up modem is only about 48 kbit/s (depending on phone-line quality and distance from the phone company), and upload speed is even slower (31.2 kbit/s for V.90, 44 kbit/s for V.92). Broadband Internet access became a rapidly developing market in many areas in the early 2000s; one study found that broadband Internet usage in the United States grew from 6% in June 2000 to over 30% in 2003.[1]Modern consumer broadband implementations, up to 30 Mbit/s, are several hundred times faster than those available at the time the Internet first became popular (such as ISDN and 56 kbit/s) while costing less than ISDN and sometimes no more than 56 kbit/s, though performance and costs vary widely between countries."Broadband" in this context refers to the relatively high available bitrate, when compared to systems such as dial-up with lower bitrates (which could be referred to as narrowband).