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gfast map nov

Dark Green: 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

Mid Pink: Smaller carriers in Germany, Norway, Finland, Japan

Light Green: Incumbent likely:  France, Germany, Italy

hanshake by ruffinoLincoln Lavoie sees "cross chipset interoperability and performance at all levels including device software for management and control." Gear with chips from Broadcom, Metanoia, and Sckipio are working with each other at a good speed, usually 600 megabits or higher. EXFO and Viavi testers also passed.

He adds, "Gfast testing has already been more rigorous than any previous certification testing and we are testing individual features more deeply than we have on any previous technology."

"Interoperability" is considered to mean working reasonably together, not necessarily at maximum performance levels. While first generation G.fast is defined to about one gigabit, interoperability testing does not run at those speeds.

There is so much in the 300 pages of the G.fast standard only a fraction of functions can be tested. Many will never be implemented. The standards were put together by two dozen respected engineers, all of whom seem to have had ideas about how things can be done better. Nearly all those ideas made it into the standard.

With British Telecom soon to reach 1,000,000 homes passed, there's no question it works.

Here's the pr

Three-fold jump in Gfast certifications aligns with service provider momentum

Now at 24 from the initial 7, with ADTRAN, EXFO and Viavi joining the systems vendor list

Fremont, California, 6 September 2017. The Broadband Forum announced today that the number of certified-interoperable Gfast solutions has jumped from 7 to 24 in less than three months, as mass deployment of the ultrafast access technology builds.

ADTRAN, EXFO and Viavi have been added to the list of companies whose products have successfully completed the Gfast certification program from the Broadband Forum and University of New Hampshire InterOperability Laboratory (UNH-IOL).

“From recent leading provider deployment announcements and analyst predictions, there is no doubt that Gfast is gathering momentum with the value of certified-interoperable systems well- recognized as key for mass-market provisioning of ultrafast broadband,” said Robin Mersh, CEO at the Broadband Forum. “Having only announced the first Gfast certification results less than three months ago, it’s great to see the certification program’s rapid and measurable progress.”

Lincoln Lavoie, Senior Engineer, Broadband Technologies, at UNH-IOL, said: “The certification program is driving cross chipset interoperability and performance at all levels including device software for management and control. Gfast testing has already been more rigorous than any previous certification testing and we are testing individual features more deeply than we have on any previous technology.”

ADTRAN, EXFO and Viavi join ARRIS, Calix, Huawei, Metanoia, Nokia and Technicolor, which were the first companies to achieve device certification supported by chip manufacturers Broadcom, Metanoia and Sckipio.

The Gfast certification is in accordance with the Forum’s IR-337 certification test specification. Testing is carried out at the Forum’s approved Gfast test laboratory at the UNH-IOL. The growing list of certified devices is available on the Forum’s Gfast certification page.

For more information on the Broadband Forum’s work, visit: broadband-forum.org.

 

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G.fast News

I’m still working through remarkable presentations from the Broadband Forum events. Michael Weissman, Bernd Hesse and team did a remarkable job choosing the speakers. http://bit.ly/BBFBASE

Deutsche Telecom: 35b Supervectoring Delayed to 2019 http://bit.ly/35blater
Broadcom is now over 3 years late. DT briefed German reporters after their financial call and revealed 35b was now delayed until 2019. 35b should deliver 200+ meg downloads 500-600 meters, a crucial tool for DT, which is losing share to cable. Cable now covers about 70% of Germany and is expanding. DT now only offers 50-100 megabit DSL while cable is often 400 megabits, going to a gigabit. 

The problem is software; the hardware is shipping and supposedly will work. DT says 35b is not ready to turn on. Broadcom in 2015 said 35b was in "production" in the press release below. Alcatel in early 2016 said to expect complete systems very soon. "35g is very similar to 17a so there should be little delay."

Broadcom's problems are leading major telcos and vendors to have a plan B, using Sckipio G.fast. DT itself is planning extensive G.fast deployments in 2019, mostly in apartment buildings. http://bit.ly/35blater

Gigabit 100 Meters - Unless the Wires are Lousy http://bit.ly/gflousy
Speeds are fine, "Unless there's a line problem." I've been reporting for three years that ~10% of lines have problems. In the chart by Rami Verbin of Sckipio, he finds G.fast goes ~130 meters on good lines. Poor lines have about half the reach. 

His chart roughly matches the reports from Swisscom, Belgacom, and England for both G.fast & vectored DSL. The 10% with problems can cause the majority of the line-related complaints to support. The angry customers drive up cost.

Rami's solution to reach the gigabit is bonding, supported on the Sckipio chips. Verbin made some additional points:

  • 4 gigabits is possible by bonding two decent 2 gigabit lines.
  • Even in a service from remote cabinets, ~25% are close enough to get a full gigabit."
  • cDTA and iDTA are practical ways to deliver much higher upstream by switching some bandwidth from downstream to upstream only when needed.
  • 35B will probably be similar but Deutsche Telecom doesn't expect to deploy until 2019. http://bit.ly/gflousy

AT&T Wants Coax 2-5 Gigabit G.fast. Very Soon. http://bit.ly/ATTCoax
AT&T faces intense competition from cable, talking about 10 gigabits in both directions. (Cable will only be 1 gig down, ~100 meg up, until ~2021.) AT&T wants something to brag about as well.

AT&T gained millions of lines of coax as part of the DirecTV deal. Alcatel and Huawei are leading the development of G.mgfast. That uses 424 MHz, full duplex, to achieve ~2.5 gigabits in both directions. The reach on telco twisted pair is only about 30 meters. On coax, those speeds can probably extend far enough to service most apartment buildings. Using 848 MHz, speeds can reach 5 gigabits. The ITU standards group has been aiming for 2019-2020 for G.mgfast, too slow for AT&T's marketers. David Titus wants a high-speed standard for coax "early in 2018." He believes that is "doable."http://bit.ly/ATTCoax

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