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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

200px-RG-6 coaxial cableBetter cable doubles reach. Calix used a 16 port fiber-fed distribution point to deliver 500+ megabits 2,000 feet. For many years, American builders have wired homes with coax, most of which are served by the local cable provider. But 8% of the U.S. does not get cable broadband. If coax is in place, Calix has just demonstrated an alternative.

In addition, some developers prefer to maintain exclusive control of broadband. over coax could be a tool for a non-cable company to compete for the business. Within a building, there's a pretty stark performance difference between and VDSL.

If you have fiber to the basement, anything but is obsolete by the end of 2016 and possibly sooner. BT is proving works in the field

; they and others are solving the remaining bugs and other issues. gear is only modestly more expensive that VDSL to manufacture. Hard bargaining with the vendor should bring the price close. 

Today's networks easily deliver 300 meg wired, 100 meg wireless, to most of the people most of the time. Anything less is obsolete and will suffer where competition is effective.


I hadn't reported that Calix, like Adtran, had publicly demonstrated bonding I missed the press release from last year's BBWF. When I reported Adtran's similar demonstration, I should have included Calix as well. Cable is now upgrading to a gigabit in much of the world; Comcast & Cox are committed to delivering that gigabit to over half the United States. Without bonding of other improvements, calling a gigabit is simply false advertising. 

AT&T has been vocal they need to be able to offer a gigabit in turn. The original pr talked of a gigabit but that was never realistic. It only applied under lab conditions and implied that no bandwidth was used for upstream. I've reported speeds as 300-800 megabits, depending on several variables. The coming "long-range" deployments of will leave many with much lower speeds. was geared for performance at 50-100 meters and trails off very badly after about 300 meters. Carriers want to save money by building fewer field terminals. Several intend to go 400-500 meters and maybe more. 

Governments who allow false advertising of speeds are key enablers. 

Calix Announces Innovations in and Vectoring at Broadband World Forum


Live bonded demo to surpass gigabit threshold; VDSL2 system level vectoring to set new standard for deployment economics over copper

LONDON – October 20, 2015 – Calix, Inc. (NYSE: CALX), the world leader in gigabit fiber deployments, today announced the expansion of its copper solutions portfolio to be highlighted at the Broadband World Forum (BBWF) this week in London. Among the new innovations are:

    • Live demonstrations of bonding technology delivering broadband speeds in excess of 1 gigabit per second (1 Gbps) over existing copper infrastructure up to approximately 250 meters
    • Live demonstrations of interoperability between Calix DPUs and modems and those of other vendors at the Broadband Forum Interoperability Pavilion
    • The debut of breakthrough VDSL2 system level vectoring (SLV) solutions on the Calix E7-2 modular access systems that deliver up to 96 vectored ports without the economic and operational burden of a dedicated vectoring control processor card (VCP)
    • The introduction of new VCPs on the E7-2 modular chassis that can scale from 97 to 384 vectored VDSL2 ports to flexibly serve more dense deployment scenarios


With these innovations, Calix has set new standards for performance over existing service provider copper infrastructure, and is leading the way in bringing to market the breadth of solutions necessary to meet the emerging demands of copper-fed broadband consumers globally.

"It is critical for service providers like Windstream to be on the forefront of technologies that will allow us to leverage our existing infrastructure to meet ever increasing subscriber service demands," said Randy Nicklas, executive vice president of engineering and CTO at Windstream. "Optimally leveraging our copper infrastructure is essential to our strategy going forward, and we are excited by the innovations that are allowing us to leverage our strategic copper assets to both stay ahead of demand and our competition. We've seen these technologies in action, and these innovations are leading the way in helping us to deliver a world-class subscriber experience effectively and efficiently, independent of the media type over which they are served."

Coax in the lab test setup


100 ft - 2,000 feet RG6. RG59 16 port unit


Star topology -  lots of loop problems

16 port fiber DP


VZ study


2,000 feet 500 meg + over coax


cpe - 801s   twisted


bonded at BBWF and user group


get into labs in international big incumbents


southeast Asia - downtown


48 & 96 on the roadmaps


Bill in Santa Barbara


Kicking tires a lot of folks



larger folks want to go fast


---------------------- is superior to vectored VFSL2 in MDU pretty stark performance difference






video from satellite in MDU with two infrastructures  - the satellite guys may move further




Want to know about zero touch provisioning. - management issues



The Site for gfast 230 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.

Deutsche Telecom: 35b Supervectoring Delayed to 2019
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 DT itself is planning extensive deployments in 2019, mostly in apartment buildings.

Gigabit 100 Meters - Unless the Wires are Lousy
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 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 & 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.

AT&T Wants Coax 2-5 Gigabit Very Soon.
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."

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