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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  

Alcatel midi coding 330x152230 megabits (up and down combined) looks to win at Deutsche Telekom. Call it what you like - Alcatel, Huawei, Adtran all have their own names. 35b - referring to the 35 MHz used - is emerging as most popular.

35b uses more MHz to get higher speeds out of DSL. To keep the comparison meaningful, I subtract the upstream and hence call this 150 megabits. The speed is from a KPN lab test (below, KPN pr in Google translation.) Paul Spruyt of Alcatel believes speeds still have room to improve within the 35 MHz band. Adtran tells me production units suitable for volume deployment are unlikely before summer of 2016. 

The 400-700 megabit speeds of G.fast come from using even more spectrum, 106 MHz. Both G.fast and highest speed VDSL (30a) use different tones from the 17 MHz VDSL used by Deutsche Telekom. 35b and 17 MHz VDSL can be vectored together; G.fast and 17 MHz VDSL probably not. 35b uses the same 4.3125 KHz tones as the 12M lines of DT's existing 17 MHz VDSL. (See illustration from Alcatel.)

DT doesn't want to upgrade those lines but does want to vector them. CTO Bruno Jacobfeuerborn told reporters he would widely use G.fast beginning in 2015 but it now looks like G.fast in Germany will be limited. DT wants to keep costs down by continuing to use the 17 MHz gear for another decade.  

Kabel Deutschland will be able to offer "twice the speed at the same price."  

PR from KPN and Alcatel of the first tests. 

 

Record copper in test environment with new technology

KPN during a successful pilot, along with Alcatel Lucent, with a new technology, a record speed on copper extracted from more than 230Mbit / s.

The pilot with the new technique, called Vplus, took place in a test center of KPN in The Hague. KPN has in recent years much progress has been made with high quality internet services. We invest in our networks and provide Internet that meets user demands speed, stability and security.

Fiberglass roll and upgrading copper

Meanwhile, two million households have access to fiber. We continue, where needed, fiberglass roll and we also currently upgrading the copper network with techniques such as pair bonding, vectoring and bonded vectoring. With the rollout of high-speed copper KPN is ahead of other European countries where techniques such as vectoring and pair bonding are still in their infancy. Vplus is a whole new technology that the frequencies used in the copper cable of 17 MHz stretches to more than 30 MHz. The technique is a first practical step towards 'bonded Vplus', where the speed can be doubled again to 400 Mbit / s. "Bonded Vplus' is still in the future, but that will probably soon be feasible.  

From, Alcatel

Vplus gets more out of VDSL2 vectoring

Vplus delivers speeds exceeding 300Mbps on a single copper pair
  • Vplus offers unmatched throughput, density and cost on 200-500m copper loops
  • Vplus is a simple extension of existing standard VDSL2 vectoring technology

Vplus is a perfect match for operators who need to deliver the highest possible speeds in a cost-effective way on medium-length loops. Vplus is a new technology that

  • Delivers aggregate speeds of 200Mbps and more over traditional copper telephone lines at distances up to 400 meters, and 300Mbps on loops shorter than 200m
  • Extends the frequency range used by VDSL2 17a vectoring to 30MHz to achieve these higher speeds
  • Can be mixed with existing VDSL2 17a deployments to fill the gap between VDSL2 vectoring (100Mbps aggregate at 700m) and G.fast (500Mbps+ aggregate at 100m)
  • Offers higher speeds (up to double) compared to VDSL2 on loops shorter than 500m
  • Offers longer reach (higher bit rates beyond 200m) and higher density (100-200 subscribers) compared to G.fast
  • Lowers operator costs compared to G.fast
VPLUS FILLS THE GAP BETWEEN VDSL2 VECTORING AND G.FAST

Figure 1 illustrates the typical performances you can expect from VDSL2 vectoring, G.fast, and Vplus.

Aggregate bit rates (upstream + downstream) are used for a fair comparison between technologies. G.fast performance is based on the ITU-T G.9701 standard (approval of which is expected in December 2014), i.e., using up to 106MHz of spectrum, and excluding VDSL2 (17a) spectrum to illustrate a mixed technology deployment.

 

Figure 1. Vplus fills the gap between VDSL2 vectoring and G.fast

 

In terms of bit rate, Vplus fills the gap between VDSL2 vectoring and G.fast. At loop lengths between 200 and 400 meters, Vplus delivers 200+Mbps and outperforms both VDSL2 vectoring and G.fast.

At shorter distances (less than 200m) Vplus does not match G.fast’s speeds, but still delivers up to 300Mbps. So even on short loops, Vplus makes a strong case for operators who need to deliver up to 300Mbps.

On longer loops, Vplus falls back to VDSL2 17a vectoring performance.

frequency division vectoring

Record copper in test environment with new technology

KPN during a successful pilot, along with Alcatel Lucent, with a new technology, a record speed on copper extracted from more than 230Mbit / s.

The pilot with the new technique, called Vplus, took place in a test center of KPN in The Hague. KPN has in recent years much progress has been made with high quality internet services. We invest in our networks and provide Internet that meets user demands for speed, stability and security.

Fiberglass roll and upgrading copper

Meanwhile, two million households have access to fiber. We continue, where needed, fiberglass roll and we also currently upgrading the copper network with techniques such as pair bonding, vectoring and bonded vectoring. With the rollout of high-speed copper KPN is ahead of other European countries where techniques such as vectoring and pair bonding are still in their infancy. Vplus is a whole new technology that the frequencies used in the copper cable of 17 MHz stretches to more than 30 MHz. The technique is a first practical step towards 'bonded Vplus', where the speed can be doubled again to 400 Mbit / s. "Bonded Vplus' is still in the future, but that will probably soon be feasible. 

feuerborn

Vplus and 17 MHz VDSL can be vectored together; G.fast and 17 MHz VDSL probably not.

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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