G.992.5

DSL technologies
	Standard
ADSL	ANSI T1.413 Issue 2 ITU G.992.1 (G.DMT) ITU G.992.2 (G.Lite)
ADSL2	ITU G.992.3 ITU G.992.4 ITU G.992.3 Annex J ITU G.992.3 Annex L
ADSL2+	ITU G.992.5 ITU G.992.5 Annex M
HDSL	ITU G.991.1
HDSL2
IDSL
MSDSL
PDSL
RADSL
SDSL
SHDSL	ITU G.991.2
UDSL
VDSL	ITU G.993.1
VDSL2	ITU G.993.2

ITU G.992.5 is an ITU (International Telecommunication Union) standard, also referred to as ADSL2+ or ADSL2Plus. Commercially it is notable for its maximum theoretical download speed of 24 Mbit/s.

Technical information

ADSL2+ extends the capability of basic ADSL by doubling the number of downstream bits. The data rates can be as high as 24 Mbit/s downstream and up to 1.4 Mbit/s upstream depending on the distance from the DSLAM to the customer's premises.

ADSL2+ is capable of doubling the frequency band of typical ADSL connections from 1.1 MHz to 2.2 MHz. This doubles the downstream data rates of the previous ADSL2 standard (which was up to 12 Mbit/s), and like the previous standards will degrade from its peak bitrate after a certain distance.

Also ADSL2+ allows port bonding. This is where multiple ports are physically provisioned to the end user and the total bandwidth is equal to the sum of all provisioned ports. So if 2 lines capable of 24 Mbit/s were bonded the end result would be a connection capable of 48 Mbit/s download and twice the original upload speed. Not all DSLAM vendors have implemented this functionality. ADSL2+ port bonding is also known as G.998.x or G.Bond.

ITU-T Spec	Description
G.998.1	ATM-based multi-pair bonding: A method for bonding of multiple DSL lines to transport an ATM payload beyond the rate/reach capability of a single DSL loop. This protocol allows the bonding of 2 to 32 pairs and supports dynamic removal and restoration of pairs without human intervention.
G.998.2	Ethernet-based multi-pair bonding: Provides a method for bonding of multiple DSL lines for Ethernet transport. This recommendation builds on the IEEE 802.3ah-2004 methods and extends Ethernet transport over other xDSL technologies, including ADSL.
G.998.3	Multi-pair bonding using time-division inverse multiplexing: Details a method for bonding DSL lines using time-division inverse multiplexing (TDIM). This recommendation uses IEEE 802.3ah handshake for pair discovery, parameter negotiation, and setup. It also allows the hitless addition and removal of pairs and the fast removal of a pair upon pair failure.

Deployment

Europe

Austria

In Austria, ADSL2+ is offered by all copper-line service providers, with major ones being A1 Telekom Austria AG, Tele2 Austria, UPC and Silver Server.. The majority of DSLAMs are capable of supporting ADSL2+ technology, newer equipment supports VDSL2+, older equipment is limited to ADSL.

Belgium

ADSL2+ has a coverage of 85% nationwide. Initially, ADSL2+ was used to support IPTV, this is still the case if VDSL2 isn't available. Speeds are limited at 12 Mbit/s. Belgacom's reference offer is called BROBA 2. Smaller ISPs use the BROBA 2 network, as well as providers who have their own ADSL2+ equipment.

There are a few other providers who have their own equipment installed in some cities, availability is therefore narrow:

Destiny NV offers an ADSL2+ subscription for professional use, with speeds of up to 24 Mbit/s downstream and 1 Mbit/s upstream.

Dommel offers three ADSL2+ subscriptions, with speeds of up to 24 Mbit/s downstream and 3 Mbit/s upstream (annex M).

EDPnet offers two ADSL2+ subscriptions at 24 Mbit/s downstream and 1 Mbit/s upstream with 100 GB data volume included. They are called ADSL Home (dynamic IP) and ADSL Office (static IP).

Scarlet The package is called Scarlet ADSL20 No limit. The download speed is capped at 20 Mbit/s and upload is as high as 1 Mbit/s, the download volume is based on a FUP. There are several smaller ISPs that use the services of Scarlet. Scarlet's reference offer is called BRUO. Belgacom bought Scarlet, one of the conditions was to sell the BRUO-network to a third party. Most likely, it is Mobistar.

Tele2/KPN Belgium offers ADSL2+ subscriptions, the maximum speed is limited at 12 Mbit/s downstream and 1 Mbit/s upstream. There is no download limit.

Bosnia and Herzegovina

ADSL2+ is offered by Logosoft in Sarajevo.

Bulgaria

In Bulgaria, ADSL2+ is offered by the national telecom operator VIVACOM. Speeds up to 20 Mbit/s downstream and 2 Mbit upstream. Available almost everywhere DSL is offered.

Croatia

In Croatia, ADSL2+ is offered by all service providers, with major ones being H1 Telekom, T-Com, Optima Telekom, Amis Telekom, Iskon and Metronet telekomunikacije. Currently all DSLAMs are capable of supporting ADSL2+ technology. The foremost reason for introduction of ADSL2+ was introduction of IPTV service by T-Com, which required major bandwidth increase.

Almost all service providers offer ADSL2+ subscriptions at speeds up to 20 Mbit/s downstream and up to 768 kbit/s upstream. Also, at all service providers, one can subscribe to a flat-rate model, which includes unlimited traffic. At a newer time IP TV offer Amis Telekom, Iskon Telecom and T-Com

Czech Republic

In the Czech Republic, the ADSL/ADSL2+ coverage is above 90% of all fixed phone lines, however maximum attainable rates vary. In many locations, and even in major cities such as Prague or Brno, the maximum speed does not even reach 4 Mbit/s because of the telephone cabling quality. Pricing plans of the biggest ADSL provider, Telefónica O2 Czech Republic, range from €23 per month for 8,192/512 kbit/s to €27 per month for 16,384/768 kbit/s.

There is also a wholesale offer for alternative ADSL providers, nevertheless the end-user price in such case does not differ significantly from that of O2. Currently only less than 5% of all ADSL customers utilize the offers based on the aforementioned wholesale offer.^[1]

There are about half dozen alternative ISPs that offer data plans utilizing the so called LLU. In this case the final price is about 25% lower than that of O2. However the LLU is typically available only in large cities. The list of LLU providers includes the following compaines:

• GTS Novera
• České Radiokomunikace - 8,192/512 kbit/s for 699,- CZK (cca €27), 20,480/1,024 for 899,- CZK (cca €35) (pricelist)
• Volný/Telekom Austria Czech Republic, bought by Dial Telecom in December 2008 - 8,192/512 kbit/s for 699,- CZK (cca €27), 16,384/768 kbit/s for 929,- CZK (€36) (pricelist)

You can check whether there are LLU offers available on your phone line. The site also estimates the maximum attainable speed on your line.

Denmark

All major DSL providers in Denmark offers ADSL2+, including TDC, Telenor, Fullrate, and Perspektiv Bredbånd. As of 2007, approximately 90% of the country is covered, although maximum bandwidth (24 Mbit/s) is available in and around the cities, that is not classified as villages or smaller. TDC currently provides triple play.

Estonia

ADSL2+ together with a triple play solution is deployed on a large scale by Elion Enterprises Limited. Download speeds are, depending on package, up to 16 Mbit/s (8 Mbit/s when watching DTV) and upload speeds are up to 1 Mbit/s. A map detailing the availability of ADSL2+ has been made available.^[2] ADSL2+ is also offered by Elisa Eesti AS. Speeds range from 5 Mbit/s to 24 Mbit/s.

Finland

ADSL2+ and triple play solutions are offered by the major DSL providers (including Elisa Oyj and TeliaSonera) in certain areas. Usually maximum download speed when using ADSL2+ is 24 Mbit/s and upload speed 1 Mbit/s. Also Nebula, SuomiCom, DNA, KPO, Finnet and many other ISPs provide ADSL2+ connections.

France

ADSL2+ and triple play solutions are offered by the major DSL providers (including Orange, SFR, Free and Bouygues Telecom) except in some rural areas. Usually maximum download speed when using ADSL2+ is 24 Mbit/s and upload speed 1 Mbit/s. 30% of population is actually limited to 2 Mbit/s due the distance with local DSLAM switch

Germany

Deutsche Telekom AG (DTAG) as former monopolist controls the majority of all end user telephone lines. It has rolled out ADSL2+ technology in the past and currently deploys VDSL2 outdoor DSLAMs in urban areas. Many of the providers listed below are reselling services provided by DTAG or at least rent the last mile from it. Some exceptions are regional providers who offer to connect houses in their areas for around 8000 euros (e.g. Netcologne, Willytel, Wilhelmtel).

DSL Type	Provider	Resale	Down (up to kbit/s)	Up (up to kbit/s)
ADSL2+	Deutsche Telekom AG	no	16000	1180
ADSL2+	Alice DSL/HanseNet	some	16000	1024
ADSL2+	Vodafone AG/Arcor AG	yes	16000	1024
ADSL2+	1 und 1	yes	16000	1024
ADSL2+	QSC/Telefónica	some	16000	1024
ADSL2+	Versatel	yes	16000	800
ADSL2+	Congstar	yes	16000	1180
ADSL2+	Netcologne	no	18000	1024
ADSL2+	M-net	no	18000	1024
ADSL2+	Willy.Tel	no	24000	1984
ADSL2+	T-M-Net.de	no	22000	1420

DSL Type	Provider	Resale	Down (up to Mbit/s)	Up (up to Mbit/s)
VDSL2	Deutsche Telekom AG	no	50	10
VDSL2	Alice DSL/HanseNet	yes	50	10
VDSL2	Vodafone AG/Arcor AG	yes	50	10
VDSL2	1 und 1	yes	50	10
VDSL2	Willy.Tel	no	50	5

Georgia

• Service Net provides ADSL2+ services from late 2005: Local Upload up to 1 Mbit/s and download speed up to 24 Mbit/s
• Silknet has enabled ADSL2+ for some PSTN lines and for GEPON technology
• Caucasus Online has enabled ADSL2+ for some PSTN lines, bases of acquired ISP Sanet, officially not in service since it is pushing GEPON technology
• Akhali Kselebi is using ADSL2+ for some of subscribers.

Greece

As of January 2007, most DSL providers started offering ADSL2+ from their proprietary network. These are:

• Algonet (Website in Greek only) - Offers double play services (algonet DualPlay) - Up to 24 Mbit/s downstream, 1 Mbit/s upstream.
• CYTA Hellas - Double Play Services (2play) - Up to 24 Mbit/s downstream, 1 Mbit/s upstream.
• Forthnet [2] - Offers Double Play services (Forthnet ADSL Economy and Forthnet 2play) - Up to 24 Mbit/s downstream, 1 Mbit/s upstream.
• Hellas Online (http://www.hol.gr) - Offers double play services (hol double-play) - Up to 24 Mbit/s downstream, 1 Mbit/s upstream.
• Net One - Offers double play services (Net One Για το Σπίτι) - Up to 24 Mbit/s downstream, 1 Mbit/s upstream.
• On Telecoms ^[3] - Offers triple play services (Όλα σε Ένα - All in One) - Up to 24 Mbit/s downstream.
• OTE [3] - Offers Double play (conn-x TALK) - Up to 24 Mbit/s downstream, 1 Mbit/s upstream.
• Tellas (a subsidiary of Wind Hellas) - Offers double play services (Tellas Double Play Best Price, Tellas Double Play No Limit and Tellas Double Play Unlimited) - Up to 24 Mbit/s downstream, 1 Mbit/s upstream.
• Vivodi [4] - Offers triple play services (cableTV [5]) - Up to 24 Mbit/s downstream, 1 Mbit/s upstream.
• Vodafone ^[4] - Offers double play services (Vodafone Double Play Plus) - Up to 24 Mbit/s downstream, 1 Mbit/s upstream.

Hungary

In Hungary, since mid-2006, multiple telecom companies have started offering ADSL2+ services. As of July 2007, T-Com, the biggest Hungarian ISP, is silently upgrading its customers' ADSL connections to ADSL2+, although with no speed changes.

Iceland

Síminn offers ADSL2+ nationwide. Vodafone Iceland offers ADSL2+ to all its customers

Ireland

• Magnet Business offers ADSL2+ services with its roll out to many exchanges in urban areas over the incumbents (eircom) copper local loop. 10 Mbit/s downstream and 1 Mbit/s upstream is a typical offering for their business broadband. Major cities initially (Limerick, Dublin, Waterford, Portlaoise, Cork, and Galway) as Magnet rolls out its unbundled exchange project. Its ADSL2+ Services are also available to residential customers, along with its fibre service which is available in certain residential developments.

• Smart Telecom offer ADSL2+ products to residential customers who are connected to any of their growing^{[citation needed]} network of unbundled exchanges. Currently the company have service in 37 Irish exchanges covering large areas of most of the major cities in Ireland. They have an entirely IP-based NGN (Next Generation Network) built around Multiple Service Access Nodes MSANs and carrier grade VoIP, multimedia and other services are provided using Thomson SA Cirpack Softswitch technology. This equipment provides the end user with both high speed broadband internet access and normal POTS service (i.e., a dial tone) all over the same entirely IP-based infrastructure.

• BT Ireland On 30 July 2008 BT Ireland launched 24 Mbit/s service on its LLU exchanges.

• Eircom In April 2009 Eircom, the Irish incumbent Launched 24 Mbit/s and 12 Mbit/s Annex M Services on over 300 of its 1,200 exchanges with another 200 smaller exchanges to follow by year end 2009.^{[citation needed]} In January 2010, eircom launched a 24 Mbit/s ADSL2+ Residential Service using Annex A Profile on the same 500 exchanges.

Italy

Most minor and major operators, supports rates up to 20Mbit/s on ATM DSLAMs with at least one backhauling STM-1 in CO serving maximum two DSLAMs (most bigger cities, especially in northern Italy). All operators operating or owning GBE DSLAM offers 20Mbit/s rates since 2007.

Malta

GO [6], as of July 2008, started to offer ADSL2+ speeds between 8 Mbit/s and 20 Mbit/s download speeds in direct competition with local cable internet supplier OnVol. A number of lines are still using ITU G.992.1 Annex B but the company will upgrade the line on demand.

Macedonia

T-Home and One are the two ISPs which offer ADSL2+ in Macedonia, with download speeds up to 20 Mbit/s and upload speeds up to 1 Mbit/s. T-Home and On.net can deliver their services across the country. T-Home offer IPTV services, with high definition television (HDTV) and recently established an optical network to the users in part of the capital city of Skopje (2010).

Moldova

The biggest ADSL provider, Moldtelecom is deploying ADSL2+(G.992.5 Annex A) throughout all Moldova. Their current broadband offer tops at 20 Mbit/s download 1 Mbit/s upload for $20 (€15). The new ADSL2+ infrastructure is available since December 2009. Interdnestrcom (Transnistria) - other provider's broadband offer tops at 8 Mbit/s download 512 kbit/s upload for $35 (€26) since 1 April 2010.

The other ADSL2+ provider is Starnet, which deployed its infrastructure mainly in Chisinau and Balti.

Montenegro

Crnogorski Telekom (T-Com) is ISP which offer ADSL2+ in Montenegro (for IPTV - Extra TV service), with download speeds up to 8.5 Mbit/s and upload speeds up to 1 Mbit/s. Crnogorski Telekom deliver its services (ADSL and Extra TV) across the country.

The Netherlands

As of October 2005, several wholesale DSL providers (bbned, Tiscali, KPN Bitstream) have ADSL2+ coverage on more than 50% of fixed phone lines in the Netherlands. As of September 2007 coverage is optional for 75% of all landlines, with about 1% of all connections having the option for Annex M (newest DSLAMs).

Norway

As of 2006, all major DSL providers in Norway offer ADSL2+, notable are DataGuard, Telenor, NextGenTel, Get, Mimer, Enivest, Eidsiva bredbånd, NEAS and Ventelo.

Poland

Telekomunikacja Polska, Netia and Multimo are offering ADSL2+ Internet connection at speed up to 20 Mbit/s (downstream) / 1 Mbit/s (upstream) for 49-74 zł per month (approximately 12-17 €; line maintenance fee is not included).

Portugal

Clix was the first operator providing ADSL2+ technology in 2005, later followed by Portugal Telecom brands and Vodafone. These operators offer download speed up to 24 Mbit/s with 1 Mbit/s up. All three operators offer a triple play solution (telephone, Internet, and TV) with TV over IP. In 2009 Portugal Telecom started installing fiber-optic across the entire country providing download speeds up to 100 Mbit/s its believed that 100% of the country will have this option available by the end of 2012\2013.

Romania

The biggest ADSL provider, Romtelecom (group of OTE) is deploying ADSL2+(G.992.5 Annex A) mainly in medium and larger cities. Their current broadband offer tops at 20 Mbit/s download 1024 kbit/s upload. The new ADSL2+ infrastructure is available since Q2 2008. Also VDSL is available starting with July 2009, with 2 commercial offers: 20/4 Mbit/s and 30/6 Mbit/s for larger cities.

Russia

The Moscow ADSL provider MTS offers ADSL2+ for some phone lines in Moscow (not all equipment on the lines is upgraded from older ADSL to ADSL2+ yet) up to 20 Mbit/s downstream 896 kbit/s upstream.
The global ADSL provider Rostelecom (offers its services under the brand Domolink) offers ADSL2+ for some phone lines in Moscow and Moscow region up to 15 Mbit/s downstream.

Serbia

The Telekom ADSL provider Stream offers ADSL2+ up to 16 Mbit/s downstream and 1024 kbit/s upstream.

Spain

Jazztel, the first operator to provide the ADSL2+ technology. Orange (formerly Wanadoo) Tele2 España (bought by Vodafone in September 2007) Telefónica Ya.com (bought by Orange in 2007)

Turkey

• ADSL2+ (Türk Telekom): Download speed up to 16 Mbit/s and upload 1 Mbit/s for unlimited connection also offering VDSL2 internet up to 100 Mbit/s and upload 1 Mbit/s.
• ADSL2+ (TurboNet Broadband Co.) : Download speed up to 24 Mbit/s and upload 2 Mbit/s for unlimited connection.
• ADSL2+ (Biri adsl): Download speed up to 10 Mbit/s and upload 1 Mbit/s for unlimited connection.
• ADSL2+ (Doping adsl): Download speed up to 16 Mbit/s and upload 1 Mbit/s for unlimited connection.
• ADSL2+ (Turkcell Superonline): Download speed up to 8 Mbit/s and upload 1 Mbit/s for unlimited connection also offering F/O fiber internet up to 1000 Mbit/s and upload 5 Mbit/s.

Ukraine

• ADSL2+ (Ukrtelecom, TM "OGO!"): Download speed up to 24 Mbit/s and upload 3 Mbit/s for unlimited connection.

• ADSL2+ (Vegatelecom, TM "Vega"): Download speed up to 24 Mbit/s and upload 3 Mbit/s for unlimited connection.

United Kingdom

In the UK, various companies are deploying ADSL2+, with O2 and Tiscali (Talk Talk Group) having the most extensive coverage as of Feb 2009.

The majority of ADSL2+ providers use a process of local loop unbundling (LLU) by connecting a customer's phone line direct into their network, bypassing BT's core network, to provide ADSL2+ lines. The availability is then limited only by the number of exchanges unbundled by each telecom operator: it is not necessary to wait for BT Group.

BT Group, which owns nearly all the POTS infrastructure across the country, is currently beginning to roll out ADSL2+ based services as part of its 21CN programme to upgrade its core network and catch up with the already extensive coverage from O2/Be Unlimited, Sky/Easynet and others.

Such operators include:

• Aquiss which were early adopters of the BT Group network solutions, starting ADSL2+ trials from October 2007 with national rollout following shortly afterwards.
• Andrews & Arnold Supports ADSL2+ on BT's 21CN exchanges,^[5] also running a trial based on Be Unlimited's wholesale LLU service.^[6]
• ADSL 24 have launched their range of products based on the BT Group network.
• Be Unlimited [7] is rapidly expanding their service of up to 24 Mbit/s downstream and 2.5 Mbit/s upstream across the UK, and have now overtaken Sky/Easynet with 1,217 unbundled and 28 pending as of Feb 2009.. O2[8] own Be Unlimited and also provide broadband using their network.
• Bulldog Broadband [9] Provided an ADSL2+ service using the Cable and Wireless Network, however since Tiscali's takeover, no new customers can sign up for this service.
• Cable & Wireless Guernsey / Sure ^[7] Sure in Guernsey started rolling out 20mb on their Sure Internet Pro service in January 2011. Up to 20Mb download, 1024Kb upload, 20/1 contention ratio
• Demon/THUS have implemented the "Pro" range of products which utilise ADSL2+ for faster download and upload speeds.
• Easynet now owned and sold by Sky[10] is one of the larger ADSL2+ providers in the country with 1,154 exchanges unbundled as of Feb 2009. UK Online also use Easynet's backbone
• Europacom.net[11] provides fast business quality 21CN broadband specifically for the retail, hostpitality and payment card sectors.
• Cerberus Networks are providers of business ADSL2+ services in the UK and have relationships with several major LLU providers. Services have up to 48 Mbit/s downstream line rates and 5 Mbit/s upstream when using the X2 bonded service.
• Eclipse Internet [12] uses ADSL2+ for all home and business customers. Supports the full 24 Mbit/s downstream. Eclipse use the BT21CN network and Tiscali's (now part of Talk Talk) LLU network.
• Gravity Internet are a business ISP who offer ADSL2+ services up to 24 Mbit/s based on BT 21CN network.
• Karoo - ISP of Kingston Communications supply ADSL2+ up to 24 Mbit/s since 2008 - in the Hull Area
• MacAce.net offer up to 24 Mbit/s broadband via BT's 21CN network specifically tailored to support customers who require Mac OS X technical support.
• NewNet [13] Supply 24 Mbit/s and 40 Mbit/s ADSL2+ with Unlimited data transfer services on 10 South Coast exchanges since August 2007
• Orange customers have reported the un-advertised introduction of ADSL2+ (and ADSL2) on LLU lines in some areas during April 2008, although speeds are currently capped at ADSLmax levels.
• O2 [14] Provide an ADSL2+ service using the Be Unlimited Network (o2 uk own Be Unlimited)
• Timico [15] broadband is amongst the highest quality business broadband services available today. Timico now offers as standard a DSL connection to the 21st Century Network in areas where it is available. This delivers download speeds of up to 20 Mbit/s and up to 1.3 Mbit/s upload speeds.
• TalkTalk (Carphone Warehouse) uses Opal Telecom's ADSL2+ service on their LLU enabled exchanges. Offering the chance to go up to 24 Mbit/s with their new "Speed Boost" add-on. As with all ISPs, the actual throughput speed obtained in practice is usually somewhat lower still.
• Plusnet[16] a BT PLC subsidiary. Rolled out a full ADSL2+ service on 21 October 2009.
• uno Broadband Provide ADSL2+ 24 Mbit/s services via multiple LLU providers with capped and unmetered data transfer.
• UK Free Software Network were part of the initial trial of the BT WBC platform for ADSL 2+ services and began offering ADSL 2+ to customers commercially from the date it was first available. UKFSN also offers ADSL 2+ LLU services where available. ADSL Bonding is offered via the BT platform.
• Utility Warehouse offer LLU and non-LLU up to 24 Meg. As with all ISPs, the actual throughput speed obtained in practice is usually somewhat lower. However they offer a unique 28 day agreement rather than the usual 12 months or 18 months contract.
• Zen Internet Ltd Provide an ADSL2+ service on their Rochdale LLU exchange, 3 other local exchanges and via 21CN across the UK as of 19 October 2009.
• Virgin Media [17] Now supports ADSL2+. However, this is to be seen as supplementary to their own Hybrid fibre-coaxial cable network, which utilises DOCSIS in preference to DSL. Virgin Media came about as a result of mergers between Telewest, NTL and the subsequent takeover of the Virgin Mobile business.
• The Phone Coop is a cooperative that now offers LLU. Users become members of the cooperative and thus can receive dividend on the operating surplus.

North America

United States

• AT&T operates ADSL2+ across several markets, primarily former Bellsouth markets. Currently, there is no outward difference in deployment between ADSL and ADSL2+ as they use ADSL2+ almost exclusively for more service range.
• Cavalier Telephone is a CLEC operating in the Midwest, Mid Atlantic, and South East markets.
• CenturyLink as Embarq deployed its first ADSL2+ market (Las Vegas) on September 17, 2007, and has since upgraded their entire network to the ADSL2+ specification, providing up to 10 Mbit/s downstream and 896 kbit/s upstream service depending on a subscriber's distance from the central office. CenturyTel, the other half of what is now CenturyLink, has deployed ADSL2+ up to 10 Mbit/s down and 768 kbit/s up DSL and up to 4 streams of standard definition IPTV or 2 streams of standard definition and 2 streams of high definition in some of their service areas.
• CornerStone Telephone is one of the largest CLECs in New York and has deployed and operates a broadband network supporting ADSL2+ Annex L&M. CornerStone supports on-net customers in Eastern New York.
• Covad (now MegaPath) has deployed services across several cities in the United States and now operates the largest ADSL2+ network in the country.
• Datavo is a CLEC based in California and currently serving over 60 CALIX based central offices throughout Los Angeles county and Orange county. They offer ADSL 2+, T-1s and DSL service.
• Empire One Telecom (EOT), A CLEC in New York, has deployed ADSL2+, and ADSL2+ Bonded service with speeds up to 48 Mbit/s down with 4 Mbit/s up.
• G4 Communications, the largest CLEC in New Hampshire, has deployed ADSL2+ service throughout the State of New Hampshire at speeds up to 24 Mbit/s down with 1 Mbit/s up.
• GVTC, Texas's largest telephone cooperative, uses ADSL2+ to provide 12 Mbit/s internet service over copper in areas that the co-op hasn't upgraded to fiber yet.
• GWI has deployed the service in areas of Maine and New Hampshire.
• LaunchNet has deployed ADSL2+ service in 11 markets throughout the US with download speeds of 15 Mbit/s and upload speeds of 1 Mbit/s.
• North State Communications, a regional ILEC that serves the Piedmont Triad area of North Carolina, offers ADSL2+ service at speeds up to 20 Mbit down and 768 Kbit up.
• Sonic.net, an ISP based in Santa Rosa California has deployed ADSL2+ services throughout the San Francisco Bay Area with speeds of up to 40 Mbit/s down and 2 Mbit/s up (with bonding.) ADSL2+ is marketed as "Fusion", a service that includes unlimited data and unlimited POTS voice service.
• Visionary Communications, a Wyoming based ISP has deployed ADSL2+ services within various Wyoming cities including Casper, Gillette, Sheridan, Douglas, and Buffalo. Offering downstream speeds up to 15Mbit/s. Visionary also provides g.shdsl, Metro Ethernet (Ethernet in the First Mile over copper),as well as T1, DS3, and fiber services in Wyoming.
• Windstream uses ADSL2+ to provide 12 Mbit/s downstream, 768 kbit/s upstream service to some of their residential customers, as well as 12 Mbit/s downstream, 1 Mbit/s up service to business customers.
• Wireless Beach Access a Delaware CLEC has deployed ADSL2+ services in its citywide WIFI network in Rehoboth Beach, DE, Dewey Beach, DE and Lewes, DE.

Independent telephone companies and rural carriers of North America probably have the highest total number of ADSL2+ subscribers collectively as they are currently using such technology to deliver the so-called triple play voice, video and data services in order to compete with the RBOCs and cable companies with their ILEC and CLEC footprint.

Canada

• BCE inc. - Bell Service, marketed as Fibe is available in parts of Ontario and Quebec (primarily in the main cities), though not all Fibe packages are ADSL2+.
• Bell Aliant - [18] Service is available in selected areas of Nova Scotia, New Brunswick, Newfoundland & Labrador and Prince Edward Island, subject to market requirements and technical feasibility.^[8]
• ColbaNet has deployed the service in specific COs in Quebec.
• Fibernetics Corporation is one of Canada's fastest growing telecommunications companies. With CLEC status, they provide DSL and their unique IP-PBX IP phone system to select areas of Ontario. Currently their ADSL2+ network covers parts of the Kitchener-Waterloo region and Barrie.
• kangunet, Dec 2008, started to offer ADSL2+ service at 8 Mbit/s downstream with 800 kbit/s upstream. The service is currently available only to the bell network.ADSL2+ VoIP DSLAM provided by CALIX C7
• Openface Internet - [19] Service is available in parts of Quebec (primarily in Montreal). Openface specializes in Internet connections for businesses, with speeds of up to 22 Mbit/s downstream and 22 Mbit/s upstream.
• SaskTel in Saskatchewan.
• Sogetel is an independent phone company in Québec that uses this technology to deliver triple play.
• TELUS in Alberta and British Columbia, Canada runs ADSL2+ (G.992.5 annex A) up to 15 Mbit/s downstream, 1 Mbit/s upstream.
• Telx Inc. www.telx-inc.com in Ontario, runs ADSL2+ up to 16 Mbit/s down, 1.3 Mbit/s up.
• Vianet Internet Solutions - Vianet in Ontario. Supplies ADSL2+ Co-Located DSL, up to 24 Mbit/s downstream, up to 1.5 Mbit/s upstream.
• VIC Communications Service is available in selected areas of Ontario, subject to the market requirements and technical feasibility. ADSL2 is currently being deployed in select areas to offer IPTV delivery, and higher access speeds.

Central America

Guatemala

Telgua in Guatemala has deployed services across Guatemala City and nearby zones, its deploying ADSL2+ in other cities and now operates the largest ADSL2+ network in the country. Deliver speeds capacity up to 5 Mbit/s downstream and 1024 kbit/s upstream and increasing.

Costa Rica

Instituto Costaricense de Electricidad (ICE) gives the services of ADSL2+ to most of the country with a speeds from 256/128 kbit/s to 4,096/768 kbit/s

Dominican Republic

Clarol offers speeds ranging from 1Mbit/s down and 256kbit/s up to 50Mbit/s down and 2Mbit/s up. The upgrade to ADSL2+ was required to provide enough bandwidth for the company's IPTV and VoIP services.

South America

Argentina

ADSL2+ (Telecom Argentina S.A. ISP:Arnet): Downstream speed up to 20 Mbit/s and upstream 512 kbit/s - www.telecom.com.ar and www.arnet.com.ar

Brazil

• ADSL2+ (Global Village Telecom; http://www.gvt.com.br): Downstream speed up to 20 Mbit/s (15 Mbit/s in some cities) and upstream 1 Mbit/s.
• ADSL2+ (CTBC; http://www.ctbc.com.br) : Downstream speed up to 10 Mbit/s and upstream 1 Mbit/s.
• ADSL2+ (Sercomtel): Downstream speed up to 20 Mbit/s and upstream 500 kbit/s - http://www.sercomtel.com.br (in 2007, started the offer of IPTv using the ADSL Network).
• ADSL2+ (Telefônica; http://www.speedy.com.br/): ADSL2+ still running up to 8 Mbit/s for download and 600 kbit/s for upload.
• ADSL2+ (Oi/BrT; http://www.oivelox.com.br): Downstream speed up to 20 Mbit/s and upstream up to 2 Mbit/s - Although most of the cities are limited to 2 Mbit/s downstream 100 kbit/s Upstream (as of April 2010) due tue distance from the CO, but mainly because of marketing practices.
• ADSL2+ (Teletalk; http://www.teletalk.com.br): Downstream speed up to 12 Mbit/s and upstream up to 1 Mbit/s or 800kbit/s - Although most of coverage area are limited to 8 Mbit/s downstream 300 kbit/s Upstream (as of August 2011) due tue distance from the CO, but mainly because of marketing practices.

Chile

• Telefonica del sur Offers up to 20 Mbit/s, video on demand, digital television and other products using ADSL2+ (G.992.5 Annex A).
• GTD Manquehue Offers up to 20 Mbit/s and other products using ADSL2+ (G.992.5 Annex A and M).

Colombia

• UNE EPM telecomuniaciones Offers up to 10 Mbit/s, IPTV using ADSL+2 (G.992.5 Annex A)
• EDATEL SA ESP offers up to 4 Mbit/s, IPTV using ADSL+2 (G.992.5 Annex A) in Córdoba, Antioquia, Sucre, city of Valledupar and municipality of Barrancabermeja.

Oceania

Australia

As of late 2008, all of Australia's largest ISPs are offering ADSL2+ services delivered on a variety of networks. The following list shows telecommunications providers who own and operate their own ADSL2+ infrastructure:

• aaNet
• Adam Internet (annex a, annex m)
• Amnet (annex a)
• Aussie Broadband Pty Ltd (annex m)
• EFTel (annex a)
• iiNet (annex a, annex m)
• Internode (annex a, annex m)
• LinearG Internet (annex a, annex m)
• Netspace (annex a)
• Nextep (annex a)
• OntheNet (annex a)
• Optus (annex a)
• PowerTel (annex a)
• Primus Telecom (annex a)
• TPG Telecom (annex a)
• Telstra (annex a)
• TSN Communications (annex a)

Australia's first commercial ADSL2+ service was launched in 2005 by ISP Internode on the Agile DSLAM network.^[9]

In 2006, Optus announced that it would sell its ADSL2+ network wholesale to other ISPs. At the completion of the rollout, the Optus DSLAM network was the largest wholesale ADSL2+ network in Australia, covering over 360 telephone exchanges.

2006 also saw Internode trial - and subsequently release - ADSL2+ Annex M services for business users.^[10] In November, Telstra BigPond, Australia's largest internet service provider launched a retail ADSL2+ service to its customers. Although Telstra had been aggressively rolling-out ADSL2+ DSLAMs for some time, the company made a strategic decision to enable services only where competitors had already deployed DSLAM infrastructure, citing the possibility of a forced wholesale regime by the Australian Competition and Consumer Commission.

In 2007, OPEL Networks was awarded nearly $1 billion of government funding to assist with a rollout of broadband in regional areas. Along with wireless broadband and an extensive fibre optic transmission network, the project was to see an extended rollout of ADSL2+ DSLAMs to many regional centres.^[11] The program was cancelled in April 2008 by the recently elected Labor government, citing coverage issues.^[12]

January 2008 saw Telstra lifting the lid on its ADSL2+ network after the Australian government and the Australian Competition and Consumer Commission issued guarantees that the company would not be forced to wholesale ADSL2+ services from its 900 ADSL2+-enabled exchanges.^[13] Seven months later, Telstra Wholesale signed agreements with People Telecom and PacNet to make ADSL2+ tails available to those customers.^[14]

As of December 2008, out of 2759 ADSL-enabled telephone exchanges, Telstra has enabled 1403 for ADSL2+ services.^[15]

New Zealand

Telecom New Zealand deployed its first ADSL2+ exchange in March 2007, and started upgrading exchanges with more than 500 lines. A program of deploying 3,600 roadside cabinets and 2,500 kilometres of new fibre optic cable to enable the delivery of broadband connections between 10 Mbit/s and 20 Mbit/s to 80% of New Zealanders by the end of 2011 was started. At Sept 2009 about 50% of the approximately 1.8M New Zealand homes were within reach of ADSL2+. With the onset of local loop unbundling, competing Internet service providers such as ihug and Orcon have also installed ADSL2+ DSLAMs in Telecom's exchanges.

On 13 March 2008, Orcon announced that it was offering ADSL2+ services to the general public. A coverage map is also available showing which parts of cities where coverage is available. Currently the following cities have some coverage: Auckland, Christchurch, Dunedin, Hamilton, Palmerston North, Tauranga, Wellington.

You can check to see if ADSL2+ has been deployed at your exchange by visiting this link Telecom NZ publishes ADSL2+ availability.

Africa

Egypt

TE Data has announced the launch of ADSL2+ service with speeds up to 24 Mbit/s and they have used their wide coverage all over Egypt in order to avail this service in 99% of the land lines, building on its unique relationship with Telecom Egypt and being the largest ISP in Egypt regarding the international bandwidth available, which was clear when it was the only operating ISP during the famous marine cable cut during February 2008. while LINKdotNET had deployed ADSL2+ on a normal copper line at 5 Mbit/s, 8 Mbit/s, 12 Mbit/s, and 24 Mbit/s being the first to offer beyond the 2 Mbit/s and also providing the highest in the country. LINKdotNET claims that it has "the fastest Internet access package in the Middle East". Currently, TE Data and LINKdotNET are the only providers who provide ADSL2+ in Egypt because of their use of Alcatel DSLAMs.

Libya

LTT Company has begun providing this service in September 2007, it works fine, but the speed has not been increased yet, it is still 256 kbit/s download, and about 128 kbit/s upload.

In 2007 LTT company started to provide ADSL+2 with 24 Mbit/s downstream, also it launched in the beginning of 2009 the Wimax called Libya Max which provides internet wireless.

Asia

Bahrain

Two of Bahrain's internet service provider Batelco and Lightspeed Communication provides up to 16 Mbit/s downstream (512 kbit/s upstream) of ADSL2+ broadband Internet connection.

Bangladesh

BTCL - Bangladesh Telecommunications Company Limited Provides Up to 2 Mbit/sdownstream with its ADSL2+ Broadband Internet connection.

Hong Kong

Hong Kong's largest internet service provider Netvigator provides 18 Mbit/s downstream (1 Mbit/s upstream) of ADSL2+ broadband Internet connection.

India

BSNL offers ADSL2+ Broadband under the DataOne brand name, with advertised speeds up to 24 Mbit/s (download). Likewise, MTNL offers the Triband service. Airtel claims a maximum speeds of up to 16 Mbit/s for its ADSL2+ service. TTML and VSNL also provide ADSL2+, with speeds up to 2 Mbit/s. India has over 7 million DSL subscribers, 80% of which are on the ADSL2+ standard. In India, ADSL2+ will need to compete with the home grown and government supported HDVSL standard which supports 36 Mbit/s download speeds.

Indonesia

TELKOM - PT. TELEKOMUNIKASI INDONESIA Provides Up to 3 Mbit/s downstream with ADSL2+ Broadband Internet connection called SPEEDY.

Israel

Bezeq, in November 2007, started to offer ADSL2+ service at 8 Mbit/s download with 800 kbit/s upload. The service is currently available only to 40% of the customers, living near the switch. At the beginning of 2009, Bezeq started to deploy the NGN service that delivers higher speeds of up to 15Mb using ADSL2+ and up to 100 Mbit/s using VDSL2, to all customers, by cutting the distance to the DSLAM.

Kuwait

Qualitynet in Kuwait provides up to 24 Mbit/s downstream & 640 kbit/s upstream of ADSL2+ broadband Internet connection (depends on the quality of the line which varies from an area to another).

UPDATE: Beginning from November 2010, the service bandwidth has been downgraded to 8 Mbit/s downstream maximum and increase in prices went up to 65%.

Lebanon

Ogero has started to deploy ADSL2+ in Lebanon in June 2007. Months after, it is still facing technical problems, and more than 3/4 of Lebanon is still not covered. The local incumbent telecom Ogero does not allow fair competition between providers because the state monopoly has the prices fixed. The cost of installation is around 55,000 L.L ($36.66) and the standard internet fee is 35,000 L.L ($23.33) at 128 kbit/s. Maximum speed obtainable with the ADSL 2+ in Lebanon is 1 Mbit/s download but that is divided between several users. Also download data is limited to around 5 GB per user on a 1 Mbit/s connection.^{[citation needed]}

Nepal

Nepal Telecom was the first telecommunication company to start ADSL2+ service in Nepal, in April 2008. They started the service in Kathmandu Valley with 22,000 ADSL2+ ports. They have since expanded the service throughout the nation in multiple phases in all 75 districts by now. As of November, 2009, they offer two plans with 128 kbit/s and 256 kbit/s downstream to their customers. Later in February 2011, they upgraded 128 kbit/s to 192 kbit/s and 256 kbit/s to 384 kbit/s. Now they have started 512 kbit/s, 1 Mbit/s and 2mps also but only to corporate offices, schools, or organizations but not for the residential use.

Oman

Omantel company provides ADSL2+ in Oman. Starting on April 27, 2008 to be the first telecommunication company that provides ADSL+ in the Persian Gulf region.

Pakistan

• PTCL is Pakistan's largest IP provider. It provides data service of up to 10 Mbit/s for home users, and at up to 16 Mbit/s for corporate offices.
• Habib Rafiq International provides DSL data connectivity across Pakistan since January 2003, with major POP's in Lahore, Islamabad, Rawalpindi, Peshawar, Karachi and Sialkot.
• Micronet provides DSL services in Pakistan since July 2002. Islamabad and Rawalpindi are the major cities covered by MBL.
• LinkDotNet, a project by Orascom, started its services in Pakistan in the end of 2007

Saudi Arabia

STC offers ADSL2+ service at maximum of 20 Mbit/s downstream data rate. The service is called Xband Jood and as of 2010 costs SAR 296 per month (approx USD $80/month ). The maximum attainable data rate however depends on the location and is usually less than stated maximum of 20 Mbit/s at most locations.

Singapore

Singapore's largest ADSL internet service provider SingNet under the subsidiary of SingTel provides 25 Mbit/s downstream and 1 Mbit/s upstream of ADSL2+ broadband Internet connection.

Thailand

Hi-Speed Internet ISPs deploy ADSL2+ Services over POTS. There is also Annex M support in some areas.

• 3BB : provides upstream up to 1 Mbit/s and downstream up to 16 Mbit/s.
• TOT (TOT ISP): offering Ultra-Speed Broadband Internet solution up to 20 Mbit/s with 1 Mbit/s upstream.
• True Online by True Corporation: offering Hi-speed internet package, providing 16 Mbit/s downstream with 1 Mbit/s upstream.
• Hinet by CAT : provides upstream up to 1 Mbit/s and downstream up to 6 Mbit/s.

United Arab Emirates

Etisalat offers ADSL2+ in speeds of 2 Mbit/s all over the UAE, and up to 4 Mbit/s in some areas that support it. Etisalat have chosen not to improve their ADSL speeds any further, as they have already started implementing high speed cable connections using fiber optics, which supports speeds up to 30Mbit/s.

See also

• ADSL
• HDVSL
• List of device bandwidths
• VDSL2

References

1. ^ "Články o připojení k internetu". DSL.cz. http://www.dsl.cz/clanky-dsl/clanek-1134/600-000-ADSL-pripojek%3A-duvod-k-oslave%2C-nebo-ke-smutku%3F. Retrieved 2011-02-06. 
2. ^ "kaart_update". Tv.elion.ee. http://tv.elion.ee/kaart_update.html. Retrieved 2011-02-06. 
3. ^ [1]^{[dead link]}
4. ^ "Personal" (in (Greek)). Vodafone.gr. http://www.vodafone.gr/portal/client/cms/viewCmsPage.action?pageId=1032&request_locale=en. Retrieved 2011-02-06. 
5. ^ "How broadband works". http://www.aaisp.net.uk/kb-broadband-how.html. Retrieved 2009-09-14. 
6. ^ "Andrews & Arnold Ltd - Broadband information - Be Lines". http://www.aaisp.net.uk/broadband-be.html. Retrieved 2009-09-14. ^{[dead link]}
7. ^ "Sure - Cable & Wireless, Guernsey". Surecw.com. http://www.surecw.com/guernsey/page-1. Retrieved 2011-02-06. 
8. ^ "Bell Aliant Industry advisory". Bell Aliant. 2007-03-16. http://www.aliant.cdn-telco.com/atia-4m.htm. Retrieved 2008-03-22. 
9. ^ "Internode Launches Extreme Broadband - Australia's First ADSL2+". Internode Pty Ltd. 2005-04-19. http://www.internode.on.net/news/2005/04/27.php. Retrieved 2008-12-21. 
10. ^ "Internode Trials First Australian 2.5 Mbit/s Upstream". Internode Pty Ltd. 2006-07-24. http://www.internode.on.net/news/2006/07/52.php. Retrieved 2008-12-21. 
11. ^ "Broadband Access and Choice for rural and regional Australia" (PDF). OPEL / Elders. 2007-06-18. http://www.futuris.com.au/images/presentations/presentation_38.pdf. Retrieved 2007-07-14. 
12. ^ "OPEL Networks Funding Agreement not to proceed". Australian Government Department of Broadband, Communications and the Digital Economy. 2008-04-02. http://www.minister.dbcde.gov.au/media/media_releases/2008/019. Retrieved 2008-12-21. 
13. ^ "More high-speed broadband after Government removes roadblock". Telstra Corporation Limited. 2008-02-06. http://www.telstra.com.au/abouttelstra/media/announcements_article.cfm?ObjectID=41677. Retrieved 2008-12-18. ^{[dead link]}
14. ^ "People Telecom first Service Provider of Telstra ADSL2+" (PDF). People Telecom Limited. 2008-08-08. http://www.asx.com.au/asxpdf/20080808/pdf/31bm19fq77vrzq.pdf. Retrieved 2008-12-21. 
15. ^ "ADSL Enabled Exchanges" (Microsoft Excel). Telstra Wholesale. 2008-12-15. http://www.telstrawholesale.com/products/docs/access_broadband_adsl_en_ex.xls?from=web. Retrieved 2008-12-21. 

External links

• ITU-T Recommendation G.992.5: Asymmetric Digital SubscriberLine (ADSL) transceivers - Extended bandwidth ADSL2 (ADSL2+)