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Gfast map July 2017

Dark blue: Firm commitments from incumbent: BT (10M), Belgacom, Australian NBN, Swisscom,  Austria, Bezeq Israel, Chunghwa Taiwan, Telus Canada, Telekom South Africa, SK Korea, (U.S.) AT&T, Century, Frontier, Windstream, Belgium, Omantel

Light blue: Smaller carriers in Germany, Norway, Finland, Japan

Green: Incumbent likely:  France, Germany, & Poland  

G.Fast performance per AlcatelG.Fast speeds. Larger version below  Update 7/13 I've since learned the BT target speed is 250 megabits because they don't intend to deploy enough fiber for higher speeds. From January: If a 4,000 home summer trial goes well, 3/4ths of the country will covered over a decade.  Gavin Patterson's plan goes far beyond anything even rumored in any other country. Trevor Linney and BT were among the first testing G.fast. At that time they were part of the gigabit hype. Patterson's announcement this time is far more realistic, speaking of "hundreds of megabits" for now. In fact, BT's talk of 400 metres suggests they are looking at one of the Midi-DSL versions rather than today's G.fast.

  • "speeds of a few hundred megabits per second to millions of homes and businesses by 2020. Speeds will then increase to around 500 Mbps as further industry standards are secured and new kit is developed." 

A few hundred megabits is closer to the current state of the art, especially if you measure download speeds. It's realistic to expect improvements to G.fast over time.  The current designs only use 106 MHz but the standard allows up to 212 MHz. Alcatel and other engineers are confident that non-linear precoding will be a major improvement but non-linear wasn't ready for the current version of the standard. I believe the noise-cancellation (vectoring) in the earlier chips will have room for improvement.

Huawei supplied the gear for the earlier BT testing, Their HiSilicon subsidiary is working on a G.fast chip but I don't know if it's ready. If HiSilicon isn't available, both Sckipio and Broadcom are promising chips for trials in the summer. 

 

G.Fast performance per Alcatel
Particularly interesting is BT's comment

  • During the trials we will be testing new ‘micro cabinets’ that are about the size of a biscuit tin and can be attached to telegraph poles, walls of buildings or placed in footway boxes. Max range 400m, possibly further. 

Attributed to a BT spokesman by Techcrunch. At 400 metres, today's G.fast version would top out below 50 megabits. Midi-DSL sacrifices speeds over 500 megabits in return for better performance, perhaps 200 megabits, at distances of 300-400 metres. Adtran, Alcatel and Huawei have proposed versions of Midi-DSL but none are close to market. It's much cheaper to locate cabinets at 300-400 meters. BT hopes many of the existing cabinets can be repurposed. 

200 megabits sounds good to me.

Here's the announcement 

 

DC15-035                                                         30 January 2015 

BT CEO sets out ultrafast broadband vision

“G.fast” to deliver speeds of up to 500Mbps to most homes 
Premium fibre services of up to 1Gbps to be developed 

BT CEO Gavin Patterson today set out the company’s ambition to transform the UK broadband landscape from superfast to ultrafast. 

He revealed that BT plans to deliver much faster broadband for homes and small businesses via a widespread deployment of “G.fast”. This is an innovative technology that BT will test in two pilot locations starting this Summer. 

G.fast will help BT deliver ultrafast speeds of up to 500Mbps to most of the UK within a decade. Deployment will start in 2016/17, subject to the pilots being successful. 

Early tests show G.fast is capable of delivering a range of speeds depending on how close the technology is to a customer’s premises. BT expects to offer initial speeds of a few hundred megabits per second to millions of homes and businesses by 2020. Speeds will then increase to around 500Mbps as further industry standards are secured and new kit is developed. 

“BT is a world leader when it comes to fibre innovation and we are excited about the next stage in our story,” Patterson said today. “We believe G.fast is the key to unlocking ultrafast speeds and we are prepared to upgrade large parts of our network should the pilots prove successful. That upgrade will depend however on there continuing to be a stable regulatory environment that supports investment. 

“The UK is ahead of its major European neighbours when it comes to broadband and we need to stay ahead as customer demands evolve. G.fast will allow us to do that by building on the investment we have made in fibre to date. It will transform the UK broadband landscape from superfast to ultrafast in the quickest possible timeframe.” 

The two pilots will start this Summer in Huntingdon, Cambridgeshire and Gosforth, Newcastle. Around 4,000 homes and businesses will be able to participate in the pilots which will explore what speeds can be delivered using G.fast at scale. 

The pilots will build on recent tests at BT’s world renowned innovation centre at Adastral Park, Suffolk. These have shown that G.fast has the potential to deliver significant speed increases from existing and new fibre street cabinets as well as from other points closer to the customer. This is an important development as it means the technology can be deployed in a more efficient and rapid manner than previously thought. 

BT is likely to deploy G.fast from various points in the network, with the pilots allowing it to assess various roll out options. It is also planning to develop a premium fibre broadband service for those residential and business customers who want even faster broadband, of up to 1Gbps. 

BT is currently expanding the reach of its fibre network by working with the public sector across the UK. Its network already passes almost 22 million premises – around three quarters of the UK – and is open to all communications providers on an equal basis. Its expansion will help the UK to boast 95 per cent coverage for fibre broadband within the next few years. 

The UK is already ahead of Germany, France, Italy and Spain when it comes to superfast broadband coverage and take-up 1 , and BT’s plans will ensure the UK stays ahead and joins the ranks of world leaders such as Japan and South Korea. 

The Site for gfast 230
 

G.fast News
A remarkable 400 people attended the very strong Broadband Forum BASE events in Berlin and Las Vegas. Trevor confirmed BT would pass the million this year. Cioffi projected “Waveguide DSL” could carry 10 gigabits a kilometer as well as a terabit 100 meters. Werner sees a 4X improvement in upstream with cDTA. Much more in next issue.

Deutsche Wants a Gigabit, Finally Realizes 50 Meg Isn't Enough http://bit.ly/2zeZ5oZ
Deutsche Telekom is finally realizing that 50 megabit DSL won't make it against gigabit cable. VP Franz Seiser is blunt. "We must change radically, become disruptive and, above all, throw away things," he proclaims at BBWF. After years of DT insisting 50 megabits is plenty, we now hear "it is about Gigabit products" from DT's Robert Soukup.  
    A lucky building in Frankfurt will receive 500+ megabit service as ultra-conservative Deutsche Telekom experiments with G.fast. Soukup told BBWF, "We're going to have a field test in Frankfurt with G.fast and Fiber To The Building (FTTB.) We will know by the end of the year if this is the right way to go." Hint to Soukup: Yes it is. G.fast is working well at a dozen telcos I;ve talked to.
     The details are surprising. DT is going for CORD, Open Source, Calix, and Radisys. http://bit.ly/2zeZ5oZ

*** The new Telebyte Guide to Testing Gfast follows the Broadband Forum IR-337 Gfast test specification, the same used by the University of New Hampshire (UNH-IOL) for Gfast certification testing. Free download http://bit.ly/telebyte (ad) It is the best technical guide to G.fast  I have seen. Grab it. Dave

1.6 Gig in Sckipio-Calix Test http://bit.ly/Calix16
A telco tells me they are getting impressive early results from the Calix 48 port DSLAM with the new Sckipio 212 MHz chips. There still is work to do but this is encouraging. 
    Carriers want DSLAMs with more than 16 ports to reduce the deployment costs from the basement or larger field cabinets. Speed matters to the marketing side of the company; AT&T's CEO believes he must offer a true gigabit to match cable. (They've been getting ~750 megabits with first generation chips. http://bit.ly/Calix16

*** Self-Healing Wi-Fi With ASSIA Real-Q 
Beyond-the-Box visibility and control extends quality-of-experience (QoE) beyond the gateway to the end-user device for every device in the home. Based on ASSIA technology, proven across 80 million subscribers http://bit.ly/2dj7FJk (ad)

Reverse Power 4 Port DSLAM for Australia http://bit.ly/NetcommRP
Australia is connecting 1M homes to G.fast, some with a Netcomm distribution point mini-DSLAM. It's a small unit designed for pole or pit mounting. It's waterproof, pressure proof, and temperature resistant. Their matching home modem is bittorrent friendly, with two USB ports for a hard drive dedicated to sharing.
     A reverse power unit at the customer, the NDD-0100-01, can save the cost of bringing power to the DSLAM. They don't expect many orders until the second half of 2018, as nbn is waiting for the second generation chips. Netcomm demonstrated RP with BT Openreach in August. http://bit.ly/NetcommRP

*** Sckipio's Three advances are taking G.fast to the next level.http://bit.ly/Sckipio (ad)

Australia Makes it Official: G.fast to Million Plus http://bit.ly/GFAussie
No news here. In September, 2015, I reported Australia's nbn Going G.fast. This June. I reported the million home fiber to the curb (kerb?) was beginning. Unfortunately, they are no closer to figuring out where to find the needed $10B to $20B to cover the cost overruns. Instead, the parties are battling in Parliament about who is to blame. http://bit.ly/GFAussie

2 Bonded 212 Lines = 3 Gigabitshttp://bit.ly/twobonded
Sckipio at BBWF is demonstrating 3 gigabits down, nearly a gigabit up, over two phone lines, bonded. Twice the bandwidth (212 MHz instead of 106 MHz) times two lines is fast. Sckipio does great demos; at CES, they showed G.fast first generation chips delivering almost 1 gig upstream.
    “Sckipio is pushing Gfast to astonishing speeds with production silicon,” CEO David Baum proclaims. Calix is using the SCK23000 chipset in their 48 port gig+ DSLAM at the show. http://bit.ly/twobonded

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