What is ADSL?

ADSL stands for 'Asymmetric Digital Subscriber Line'. It provides high speed, always-on access to the Internet from your home or business telephone line. By sending digital signals over the telephone line, it provides broadband Internet access without interrupting your normal (and concurrent) use of the telephone line for placing and receiving phone calls. It provides an effective way to provide Internet access in a variety of situations, without the complications of configuring and operating a modem. It has a number of technical advantages compared to accessing the Internet via a dialup modem or other means. The 'Asymmetric' part of these services is related to their data transfer speed, which is slower on the 'upload' (to the Internet) direction than it is on the download (from the Internet) direction. This is similar to a 56k modem, which is only 'fast' in the download direction, and slower uploading. Most other commonly available data services (such as Telstra leased lines, ISDN ...  more

Asymmetric Digital Subscriber Line (ADSL) was conceived originally by researchers at telephone companies for video-on-demand type applications, but has since become focused on providing higher speed Internet services, such as the World Wide Web. ADSL is faster in the downstream (towards the customer) direction and slower in the upstream direction. Some applications, such as downloading from databases using control commands (browsing on the Internet), do not always demand symmetric data rates and can take advantage of an asymmetric system. As a minimum, ADSL provides T1 rate or higher in the downstream direction and 64 kbps or higher in the upstream. The "enhanced performance" ADSL Standard provides for multiple channels with total downstream rates as high as 8 Mbps, plus bi-directional channels up to 768 kbps. Since ADSL was designed for residential or small-office, home-office (SOHO) type services, is was designed from the outset to operate with POTS simultaneously on the same line, ...  more

ADSL stands for Asymmetric Digital Subscriber Line. It transforms a twisted copper pair of wires between a local telephone exchange and a customer's telephone socket into a high-speed digital line. It is called "asymmetric" because it moves data more quickly from exchange to customer than from customer to exchange. This makes it particularly suitable for applications where customers expect to receive more data than they transmit such as use of the World Wide Web, corporate intranets, and reception of digital audiovisual material. In short, it will provide you with constant, broadband access to the Internet, 24 hours a day, 7 days a week with no telephone, leased line or ISDN charges. Who is ADSL aimed at? Our ADSL service is aimed at our home users. It will enable you to send and receive data 10 times faster than any current dial up connection. ADSL also leaves the telephone line free to make and receive normal phone calls. Apart from being extremely fast, customers who spend a lot ...  more

ADSL stands for Asymmetric Digital Subscriber Line. It is a cutting-edge technology that transforms ordinary phone lines into high-speed digital lines for ultra-fast Internet access. ADSL allows higher bandwidth to be sent down a standard copper pair of wires, such as that used to provide your regular home telephony service. It also provides you with simultaneous Internet and voice/fax capabilities over a single phone line since it maximizes the capacity of your line. This means that you can surf the Internet and use the phone or fax at the same time. You can enjoy high-speed Internet access and Video-On-Demand services, with high data security (compared to cable modem technology), 24 hours a day too. Due to its high digital quality, ADSL technology vastly improves telecommuter-networking functions, the speed of on-line multiplayer gaming as well as real-time video streaming capabilities.  more

ADSL (Asymmetric Digital Subscriber Line, or DSL for short) is a high-speed Internet access service that utilizes existing copper telephones lines to send and receive data at speeds that far exceed conventional dial-up modems. The fastest dial-up modems are rated at 57 kilobits per second (Kbps), and usually operate at about 53 Kbps under good conditions. By comparison, ADSL allows datastream speeds from 1.5 to 8 megabits per second (Mbps), depending on the grade of ADSL service purchased. ADSL uses standard telephone lines to transmit upstream and downstream data on a digital frequency, which sets these datastreams apart from the analog signals telephones and fax machines use. Because the ADSL signal is operating on a different frequency, the telephone can be used normally, even when surfing the Web with ADSL service. The only requirement will probably be inexpensive DSL filters on each phone or fax line, to remove any "white noise" on the line that might be generated from ADSL ...  more

ADSL (Asymmetric Digital Subscriber Line) is a technology for transmitting digital information at high bandwidths on existing phone lines. Unlike a regular dialup phone service, ADSL provides a continously-available connection. ADSL is asymmetric in that it uses most of the channel to transmit downstream to the user and only a small part to receive information from the user. ADSL simultaneously accommodates analog (voice) information on the same line. ADSL is generally offered at downstream data rates from 256 Kbps to about 24 Mbps (ADSL2+). ADSL connection to broadband makes better use of your existing phone lines. A Plain Old Telephone Service (POTS) consists of a twisted pair of wires. ADSL utilises the unused potential capacity of these wires by sending and receiving data at a different spectrum. With a dialup service, you are making a local call every time you connect to the internet. However, ADSL is an always-on service, with no need to dialup, saving money on dialup calls.  more

ADSL, which stands for Asymmetric Digital Subscriber Line, is a broadband communication technology designed for use on regular phone lines. It has the ability to move data over the phone lines at speeds up to 140 times speedier than the fastest analog modems available today.  more

Asymmetric DSL offers greater download capacity compared to its upload capacity. It usually co-exists with a telephone service on the same copper circuit and uses microfilters to separate the voice and data service at both "ends" of the circuit. The international standard for ADSL define a maximum performance of 8Mbps downstream and 800kbps upstream. In 2003, an international protocol ADSL2+ has been developed that can offer a boosted maximum download data rate of, perhaps, 25Mbps. The first services using ADSL2+ are likely to be rolled out in the UK during 2007.  more

ADSL stands for Asymmetric Digital Subscriber Line. ADSL, or PTI-DSL, is a modem technology that turns your existing phone line into a three-channel data delivery system. One channel transmits voice services, so normal phone and fax usage continues whether or not you are accessing the Internet. A second channel transmits data downstream at high speeds, and a third bi-directional channel transmits data upstream. The downstream and upstream channels carry information to and from the Internet. Therefore, phone or fax calls occurring on the first channel are not affected by your online activity. There are modems at each end of the phone line. One is at your home; one is at the PTI Central Office. Working together, these modems provide a dedicated connection that avoids the need to dial-up for access to the Internet. The modem in the PTI Central Office points your Internet traffic to the DSL network and on to the Internet.  more

ADSL stands for Asymmetric Digital Subscriber Line. It provides high-speed digital modem technology via a single telephone line.  more