|
Acceptable Use Policy | Privacy Policy © 2006 Globe Internet Ltd. |
| What is Broadband |
|
Broadband is often called high-speed Internet, because it usually has a high rate of
data transmission. In general, any connection to the customer of
256 kbit/s (0.256 Mbit/s) or more is considered broadband Internet. Broadband provides symmetrical upload and download speeds. Equal upload and download speeds are better suited for the use of Voice Over Internet Protocol (VoIP), video conferencing and remote desktop and server applications (VPN). |
| Types of Broadband |
|
Digital Subscriber Line(DSL) DSL or xDSL, is a family of technologies that provide digital data transmission over the wires of a local telephone network. DSL originally stood for digital subscriber loop, although in recent years, many have adopted digital subscriber line as a more marketing-friendly term for the most popular version of consumer-ready DSL, ADSL. |
|
Asymmetric Digital Subscriber Line (ADSL) (ADSL) is a form of DSL, a data communications technology that enables faster data transmission over copper telephone lines than a conventional voiceband modem can provide. It does this by utilizing frequencies that are not used by a voice telephone call. A splitter or micro filters allow a single telephone connection to be used for both ADSL service and voice calls at the same time. Because phone lines vary in quality and weren't initially provisioned with ADSL in mind, it can generally only be used over short distances, typically less than 5 km. Very High Speed Digital Subscriber Line(VHDSL) VDSL or VHDSL (Very High Speed DSL) is an xDSL technology providing faster data transmission over a single twisted pair of wires. Compare HDSL (High data rate Digital Subscriber Line). The maximum available bit rates are achieved at a range of about 300 meters (1000 ft), which allows for 26 Mbit/s symmetric access or up to 52 Mbit/s down – 12 Mbit/s up asymmetric access. Fiber-optic communication Fiber-optic communication is a method of transmitting information from one place to another by sending light through an optical fiber. The light forms an electromagnetic carrier wave that is modulated to carry information. First developed in the 1970s, fiber-optic communication systems have revolutionized the telecommunications industry and played a major role in the advent of the Information Age. Because of its advantages over electrical transmission, the use of optical fiber has largely replaced copper wire communications in the developed world. Fiber-optic communication, while only recently being used in fiber to the premises and fiber to the curb schemes, has played a crucial role in enabling Broadband Internet access by making transmission of information over larger distances much more cost-effective than copper wire technology. Wireless Broadband This typically employs the current low-cost 802.11 Wi-Fi radio systems to link up remote locations over great distances, but can use other higher-power radio communications systems as well. Traditional 802.11b was licensed for omnidirectional service spanning only 100-150 meters (300-500 ft). By focusing the signal down to a narrow beam with a Yagi antenna it can instead operate reliably over a distance of many miles. |
 |
| How Broadband Works Click here to Enlarge |
