spacer 2Telebyte Gfast Testing Guide 320

gfast map June 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

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

Green: Incumbent likely: Belgium, France, Germany, & Poland  Country by country details. 

Usain bolt by drcliffordchoi-320It works, finally. As always, the telcos were cautious and the vendors promised too much. The dam has broken now, with BT going at 3M homes passed each year. http://bit.ly/BThalffast CEO Patterson will keep going until “almost all” Brits can get what he’s calling ultrafast broadband.

AT&T looks to be the next big order, millions of lines with fiber to the basement and G.fast to each apartment. http://bit.ly/GfastATT. Chunghwa in Taiwan is covering almost the entire country. In Australia, Parliament is debating how much of the National Broadband network should switch to G.fast. Rio de Janeiro, Panama, Belgium, and Switzerland are on the way.  

Results today are 500-800 megabits from basements or nearby “distribution points.” Sckipio brought 750 megabits upstream to CES. http://bit.ly/Up750 Kevin Foster of BT outlines how the system can and must be improved, especially for better performance at 200-400 meters. http://bit.ly/GFmustdo Huawei opened the kimono and told me a 96 port vectored G.fast rig is scheduled for Q4, one of Foster’s “musts.”

Full duplex, sending and receiving at the same time and same frequency, is working as part of  Alcatel’s XG-FAST, it can almost double performance. The CEOs of both Deutsche Telekom and BT are enthusiastic after seeing demonstrations well into the gigabits over short loops. http://bit.ly/FullduplexDSL (Neither company has suggested a deployment this decade, nor has Alcatel/Nokia suggested when it will be product.)

John Cioffi in Paris next week will explain how BT and others can get 100 megabits more, by finding equitable ways to share all the spectrum and run G.fast from 2 MHz to 106 MHz. Unbundling would shift to multi-tenant software. http://bit.ly/JC100Meg Everyone except the cable guys benefit, especially the British public. Sharon White of OFCOM is impressive so far; I hope the wisdom of a Solomon is not required to make this so.

Surprising applications are being found. Calix uses coax, where in place, to extend the reach by more than 400%. http://bit.ly/Coaxgfast BT and Cavium are testing “fronthaul” from wireless cells to small cells and distributed antennas. They’ve modified the CPRI software and believe capacity for wireless fronthaul increases 4X.  http://bit.ly/fronthaul Telebyte is ready with test equipment to help develop interoperability. http://bit.ly/GFtestgear

BT disappointed everyone by retreating from their initial plan for the close-in distribution points. Instead, they will go to the cabinets already in place. That saves money but reduces the speed; I call it G.halffast. BT’s Peter Bell says the economics of going to the distribution points is “untenable.” http://bit.ly/gfuntenable  If that’s true, FT/Orange and Telefonica Spain are in deep trouble. They have already built out ~20M lines of fiber all the way home, which is even more expensive than G.fast. Both are actually doing better, so I think Bell is making some inappropriate assumptions.

Deutsche Telekom is the big holdout, choosing instead vector VDSL at “up to 100 megabits.” Actually, they are now saying 50-100 megabits and they refuse to guarantee even the lower speed. They have fallen a year or more behind schedule. CEO Timotheus Höttges talks up 35b “supervectoring” in theory capable of 250 megabits. DT doesn’t expect 35b before 2018, also two years behind. Until proven otherwise, I expect very few will get 250 meg from 35b,

 

Top people from nearly every one of these companies will be at the Paris Summit 18-20 May. Do Find a way to come and you’ll go home an expert yourself. http://bit.ly/upperParis

The G.fast stories:

10 M British homes offered G.fast in 4 years http://bit.ly/BThalffast

AT&T's Bill Smith: "We haven't quite made the call yet on G.fast" http://bit.ly/GfastATT

http://bit.ly/GfastATT

750 Megabits Upstream G.fast  http://bit.ly/Up750

BT G.fast Musts: ~ 350 meters, 48/96 ports http://bit.ly/GFmustdo

Past a Gigabit: Full Duplex DSL for (?Double) Speed http://bit.ly/FullduplexDSL

96 Port G.fast Q4 from Huawei http://bit.ly/96portgfast

BT Testing G.fast for Cellular Fronthaul bit.ly/fronthaul

G.fast Over Coax Cable? Calix Says Yes http://bit.ly/Coaxgfast

Test Gear Ready to Speed G.fast Design, Deployment http://bit.ly/GFtestgear

British Telecom: "Economics of G.fast distribution points are untenable." http://bit.ly/gfuntenable

Super-vectoring, DT Network falling two years behind http://bit.ly/DTlate

Newsletter

Subscribe to our Newsletter

Latest
BT: G.fast performance "pretty much spot on"
DSM Could Increase G.fast Speeds 25-50+ Megabit
DT: No 35b VDSL before 2018, modems not available
AT&T G.fast confirmed (unofficially.)
Andrew Ferguson: DSLAMs can be different
Energia Selling Nokia G.fast in Japan
Calix Clobbered by Services Cost
Switzerland: We're going G.fast; Forget fiber home except in new builds 
Nokia takes XG-FAST to 8 gig in the lab at nbn 
Huawei jumping in to G.faster 
Paris G.fast Summit 2017 9 to 11 May will be a great show
100,000 G.fast modems sold by Technicolor - running VDSL Australia: 
700,000 "FTTdp homes." Should use G.fast but may go VDSL. 
Tens of millions G.fast lines predicted 
"Study" predicts $200/line G.fast chip price in 2022 !? 

Read more ...