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Topic: ADSL

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In the News (Sun 26 May 19)

  Asymmetric Digital Subscriber Line - Wikipedia, the free encyclopedia
Providers usually market ADSL as a service for people to connect to the Internet in a relatively passive mode: able to use the higher speed direction for the "download" from the Internet but not needing to run servers that would require bandwidth in the other direction.
For conventional ADSL, downstream rates start at 256 kbit/s and typically reach 8 Mbit/s within 1.5 km (5000 ft) of the DSLAM equipped central office or remote terminal.
CAP was the de facto standard for ADSL deployments up until 1996, deployed in 90 percent of ADSL installs at the time.
en.wikipedia.org /wiki/ADSL   (945 words)

 Encyclopedia: ADSL around the world   (Site not responding. Last check: 2007-11-06)
In addition, Telstra has been critisised for limiting their ADSL DSLAM speed to a maximum of 1.5 Mbit and 512 kbit/s (download and upload respectively), whereas the maximum ADSL speed is 8 Mbit and 1 Mbit (download and upload respectively).
ADSL was successful in Brazil during beta testing, and became popular in 2000, with the main ISPs being Speedy, Ajato and Velox, with typical speeds of around 256 kbit/s down and 128 kbit/s up.
ADSL has in theory been available in Italy for a number of years, and has been very widely publicised; but in practice has to now (Sept 2004) been limited by an exasperatingly low technical competence of the telecoms companies, which consumers continue to tolerate.
www.nationmaster.com /encyclopedia/ADSL-around-the-world   (2343 words)

 ADSL\ADSLTechDis   (Site not responding. Last check: 2007-11-06)
ADSL is a huge step in the data communication field, and it uses state of the art technology in more then one area.
The ADSL protocol defines a basic stream of data which is known to both endpoints in advanced and enables them to find the specific SNR for each sub-frequency, and uses this information to split the data over the sub-frequencies (as can be seen in the following figures).
It is important that the ADSL won't effect the POTS in any way, to accomplish that the lower 4Kbps is separated by a analog circut called Splitter.In this way you can make simple phone calls and use ADSL services in the same time.
www2.rad.com /networks/1997/adsl/ADSLTechDis.htm   (446 words)

 Information Security Glossary - ADSL
ADSL (Asymmetric Digital Subscriber Line) is a relatively new technology for transmitting digital information at high speeds, using existing phone lines (POTS) to homes and business users alike.
ADSL was specifically designed to exploit the one-way nature of most multimedia communication in which large amounts of information flow toward the user and only a small amount of interactive control information is returned.
With ADSL (and other forms of DSL), telephone companies are competing with cable companies and their cable modem services.
www.yourwindow.to /information-security/gl_adsl.htm   (208 words)

ADSL can allow users to download digital information at multimegabit speeds while still happily chatting on their analog phone, and all over the same twisted pair copper wire local loop that they used before.
Moreover, ADSL offers a permanent, packet-switched connection for all services, while ISDN supports most of the things ADSL is used for only on traditional circuits (the B channels), which dedicates bandwidth and switching resources to a specific connection for the duration of the connection.
While ADSL shows considerable promise, especially for some flavors of the technology, it remains to be seen if local loop performance limitations will eventually force carriers to abandon ADSL in favor of something else, something that perhaps has not even left the lab yet.
www.garykessler.net /library/adsl.html   (3448 words)

ADSL is an upgrade to your existing analogue phone line; it can also technically be an upgrade to an ISDN line, but that is not currently offered by BT or ISPs in the UK.
ADSL on the other hand is available as either an ADSL modem with USB connection, or via an Ethernet router, depending on the service selected.
The ADSL 'data' signal and the regular voice signal are carried down the same line, each operating in a different part of the 'spectum' (a bit like different radio stations).
www.seg.co.uk /products/adslover.htm   (4412 words)

 ADSLguide: Beginners FAQ
ADSL is a type of DSL where the upstream and downstream speeds differ (hence the "asymmetric" part).
ADSL is a broadband connection technology which utilises existing copper wired telephone networks.
ADSL uses a wide range of frequencies over an existing telephone line to deliver much higher speeds than your standard 56k modem (between 10 and 140 times faster).
www.adslguide.org.uk /qanda.asp?faq=beginners   (960 words)

 DSL Frequently Asked Questions and Answers   (Site not responding. Last check: 2007-11-06)
ADSL technology uses the different frequencies of the telecommunication spectrum to transmit voice and data.
The competitive challenge for ADSL is to support a large deployment from the carrier's CO and from co-located offices, through which the carrier leases lines from another as a CLEC or ISP.
The ADSL line rates are directly related to the distance from the central office and the condition of the line.
www.3com.com /solutions/en_US/home/dsl_faq.html   (2700 words)

 ADSL Tutorial
ADSL is literally transforming the existing public information network from one limited to voice, text and low resolution graphics to a powerful, ubiquitous system capable of bringing multimedia, including full motion video, to everyone's home this century.
ADSL will play a crucial role over the next ten or more years as telephone companies, and other service providers, enter new markets for delivering information in video and multimedia formats.
ADSL modems provide data rates consistent with North American and European digital hierarchies and can be purchased with various speed ranges and capabilities.
www.dslforum.org /aboutdsl/adsl_tutorial.html   (1259 words)

 Digital Subscriber Line (DSL)
ADSL transmits more than 6 Mbps to a subscriber, and as much as 640 kbps more in both directions (shown in Figure 15-1).
ADSL modems provide data rates consistent with North American T1 1.544 Mbps and European E1 2.048 Mbps digital hierarchies (see Figure 15-2) and can be purchased with various speed ranges and capabilities.
ADSL employs advanced transmission techniques and forward error correction to realize data rates from 1.5 to 9 Mbps over twisted pair, ranging to 18,000 feet; VDSL employs the same advanced transmission techniques and forward error correction to realize data rates from 13 to 55 Mbps over twisted pair, ranging to 4,500 feet.
www.cisco.com /univercd/cc/td/doc/cisintwk/ito_doc/adsl.htm   (3937 words)

 ADSL Service Providers.net   (Site not responding. Last check: 2007-11-06)
ADSL Service Providers.net trademarks may not be used in connection with any product or service that does not belong to ADSL Service Providers.net, in any manner that is likely to cause confusion among customers, or in any manner that disparages or discredits ADSL Service Providers.net, its subsidiaries and affiliates.
ADSL Service Providers.net makes no representations or warranties as to the completeness, accuracy, adequacy, currency, or reliability of any ADSL Service Providers Information and shall not be liable for any lack of the foregoing.
ADSL Service Providers.net is not engaged in rendering legal, accounting, or other similar advice or professional services.
www.adsl-service-providers.net /legal.html   (735 words)

 ADSL Tutorial
ADSL can literally transform the existing public information network from one limited to voice, text and low resolution graphics to a powerful, ubiquitous system capable of bringing multimedia, including full motion video, to everyone's home this century.
ADSL will play a crucial role over the next ten or more years as telephone companies enter new markets for delivering information in video and multimedia formats.
ADSL modems have been tested successfully in more than 30 telephone companies, and thousands of lines have been installed in various technology trials in North America and Europe.
www.yellowhead.com /adsl.htm   (1154 words)

 ADSL - a Whatis.com definition - see also: Asymmetric DSL, Asymmetric Digital Subscriber Line   (Site not responding. Last check: 2007-11-06)
ADSL (Asymmetric Digital Subscriber Line) is a technology for transmitting digital information at a high bandwidth on existing phone lines to homes and businesses.
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 is generally offered at downstream data rates from 512 Kbps to about 6 Mbps.
searchnetworking.techtarget.com /sDefinition/0,,sid7_gci213764,00.html   (279 words)

 Telstra - ADSL Demand Register - FAQ
ADSL is a way of using existing phone lines to deliver an Internet Grade Broadband Connection.
The ADR has been designed as a source of information about ADSL exchange enablement and a means for you to express your interest in ADSL where it is currently not available from your exchange.
If this investigation identifies that ADSL cannot be provided in the near future on your service, Telstra will continue to review the situation with the intent of providing a network solution where and when economic.
www.telstra.com.au /demand/faq.htm   (2116 words)

 Technorati Tag: adsl
Causa ADSL che non arriva e banditismi dalle uniche e quanto mai ladresche compagnie telefoniche italiane, sono costretto a chiudere un contratto per...
Abgelegt unter: adsl — albert @ 15:49 Es soll in den nächsten Monaten adsl in Passeier geben.
Jazztel y ADSL2+ ADSL Microsite de jazztel dedicado a informar sobre su ADSL a 20 MB y ADSL2+.
www.technorati.com /tags/adsl   (665 words)

 ADSLguide: The UK's largest independent ADSL review site - Your guide to UK broadband Internet.
TPON is a system whereby a length of fibre optic cable is used to link an estate back to a distant exchange, this fibre optic cable is then broke out using hardware in a grey street cabinet to provide each house with a normal copper telephone cable.
The good news is that if you live in the Leamington Spa area and get the dreaded special fibre message when checking ADSL availability at www.bt.com/broadband, then keep checking because in the next few months your line may change to allow ADSL to work.
EFHBroadband.com has announced that in addition to its range of up to 8Mbps ADSL products, it will be offering up to 24Mbps using ADSL2+ during October 2005.
www.adslguide.org.uk   (1888 words)

 ADSL EPL Telecom Test Equipment, modem, fax, rtte, tbr21   (Site not responding. Last check: 2007-11-06)
Now that the European Public Telephone Operators have begun to unbundle and roll out initial ADSL services, the start of the fixed-access Broadband industry in Europe can now be seen to have arrived.
As well as creating new businesses based on the provision of high-bandwidth content, some traditional businesses will find that they will need to adapt both products and services, to the new possibilities provided by DSL technology.
Electron Parametrics has been involved in various ADSL activities over the last 7 years, working with companies in the USA, Far-East and Europe on a variety of projects.
www.epl.co.uk /ADSL.htm   (202 words)

 Dynalink USB ADSL Modem   (Site not responding. Last check: 2007-11-06)
ADSL is a Wide Area Network (WAN) connection; it is one of the many types of xDSL services available.
ADSL provides high-speed data transfer rates up to 8 Mbps (or 140 times faster than a 56k analog modem).
ADSL technology utilises the remaining bandwidth for the transfer of high-speed data.
www.dynalink.com.au /products/ale070.htm   (593 words)

 Interactive Web now offer high-bandwidth Internet access through ADSL (Asymmetric Digital Subscriber Line)
This is now possible with ADSL: Asymmetric Digital Subscriber Line — a technology supplied through BT, which transforms the existing pair of copper wires between a customer’s telephone socket and the local telephone exchange, into a high-speed digital connection.
With a constant upstream speed of up to 256 kbits per second, ADSL is designed specifically in mind for end users who wish to receive more information than they send.
Installation couldn’t be easier: for each end user, an ADSL modem and splitter will be provided and installed by BT and you will be reassured to know that ADSL is charged at a flat rate enabling you to enjoy permanent Internet connectivity without having to incur telephone charges.
www.wwwuk.net /adsl   (528 words)

ADSL (Asymmetric Digital Subscriber Loop) is a new technology for high speed communication over the existing copper line.
Here we can find a brief description about what ADSL is, what are the steps to getting it, the charges for this service, and also a page oriented to see if your home or business is connected to a part of Southwestern Bell's phone network enabled to handle ADSL.
It is a combination of network computers and information appliances, ADSL, the JAVA Operating System, applets and intelligence in the switched network to enable a new paradigm for easy-to-use, distributed computing.
www.geocities.com /ccalixtro/adsl.html   (1119 words)

 Adam Internet ADSL Enquiry Form   (Site not responding. Last check: 2007-11-06)
ADSL provides both data and voice over the same pair of copper wires that your telephone service is on meaning you can run both data and make telephone calls at the same time.
Waiting for your ADSL to be connected is an exciting time, so don't worry we will contact you as soon as we are told your service is available.
No, with ADSL there are no peak periods or time limitations on when you can use the service.
adsl.adam.com.au /about.htm   (1485 words)

 [No title]   (Site not responding. Last check: 2007-11-06)
The key to ADSL is that the upstream and downstream bandwidth is asymmetric, or uneven.
As a result, the ADSL signal is carried over all of the house wiring which results in lower available bandwidth due to greater noise impairments.
The reason that the upstream speed in ADSL is generally much less than the downstream rate is due to this fact.
homepage.interaccess.com /~jkristof/xdsl-faq.txt   (8736 words)

 ADSL   (Site not responding. Last check: 2007-11-06)
If your ADSL account within multi-real IP Addresses then Multi-Global IP mapping function is a useful feature for Internet application.
The former version xxxx is the code from Alcatel and the later Version xxxx shows the firmware modified by ourselves.
The router is kept in downloading status if you see ADSL module is not loaded and you can back the router to normal mode by escaping downloading status.
www.micronet.com.tw /FAQ/ADSL/ADSL.asp   (2656 words)

 Dan Kegel's ADSL Page
According to a press release from US West, both ADSL and single-pair HDSL lines were used in a technical trial earlier this year; a market trial will follow in late '96, and deployment in selected areas in '97.
ADSL is one member of a continuum of last-mile transport systems called DSL, or Digital Subscriber Line, which can carry about 1 to 6 megabits/sec over copper lines.
ADSL was originally designed so you still can use it as a regular phone line when the power goes out, which would be a big improvement over BRI ISDN.
alumnus.caltech.edu /~dank/isdn/adsl.html   (802 words)

 ADSL Internet Access
ADSL is the perfect broadband solution for home and small businesses.
We are able to provide ADSL service to qualifying locations in several cities across Kansas.
There are some additional steps needed to determine if your location can be serviced with ADSL connectivity, because DSL technology features some important qualifications to function properly.
www.hubris.net /services/areas/adsl.html   (250 words)

 Fast Access ADSL Internet - UK
ADSL (Asymmetric Digital Subscriber Line), is a continuous "always-on" digital broadband connection that directly connects your premises to the Internet.
ADSL uses your existing telephone line so there is no need for new cables and ADSL does not tie up the phone line for normal usage.
ADSL speeds will vary depending on the provider and service you select.
www.earthweb-connect.com /ADSL.htm   (1122 words)

 Internode - Broadband ADSL - SOHO Broadband ADSL Price List
ADSL Fast Transfer / Churn, is not available for transferring directly to an Agile ADSL2+ DSLAM.
ADSL services are normally provisioned within 21 days and Activated by Internode no later that 7 days thereafter at which time Internode will commence billing the customer.
Note: requires Cisco 837 router solution, customers with existing Business ADSL services who opt for this option may be required to adjust their Static IP allocation.
adsl.internode.on.net /pricing/soho.htm   (1505 words)

 The educational encyclopedia, ADSL and cable modems   (Site not responding. Last check: 2007-11-06)
ADSL ADSL (Asymmetric Digital Subscriber Line) refers to a modulation scheme used to deliver network traffic to a customer's residence using the same copper twisted-pair wiring used for voice and ISDN service.
ADSL tutorial asymmetric digital subscriber line (ADSL) is a new modem technology that converts existing twisted-pair telephone lines into access paths for high-speed communications of various sorts
ADSL tutorial ADSL transmits more than 6 Mbps to a subscriber, and as much as 640 kbps more in both directions
users.telenet.be /educypedia/computer/modemadsl.htm   (433 words)

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