spacer 2Telebyte Gfast Testing Guide 320

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  

Sckipio bonding 700x291Answer to Midi-DSL, gets the promised gigabit. Bonding two - or ten - DSL lines has worked for years but most thought G.fast had enough speed bonding wouldn't be needed. A Google search +bonding +G.fast finds nothing. G.fast torchbearer Sckipio is discovering a need however, and now is promising to bond two G.fast lines to ~double speed. They've put "THIS YEAR" in capitals because apparently customers care. (see illustration.)

Bonding may prove important at both the high and low end of G.fast performance. Promising a gigabit from G.fast got the ITU committee headlines around the world but trials aren't delivering that speed. Cable is now available to half a million French homes at 800 megabits (shared) and soon will be a gigabit in many places. There may be no practical purpose in speeds over 100 megabits or so but Google in Kansas City is proving customers like the gigabit.

The speed doubling may be more important protecting the low end of G.fast. 

Alcatel is getting interest from telcos who want high speeds at 200-500 meters. They've proposed Midi-DSL, extending VDSL to 35 MHz and tweaking things. G.fast torchbearer Sckipio is answering back with G.fast demos of 400-500 meters. Speed falls, but 100+ megabits is promised. Alcatel says the Midi-DSL will be faster at 400 meters and bonding to double speed would be a natural response by Sckipio.

It's unlikely bonding will actually be used for many lines, even if offered. Telcos may want an advertised answer to high cable speeds but will generally avoid actually selling it. It would require a technician to make a non-standard installation and add complexity. They will probably discourage actual orders with a high price.

 


212 GHz and cDTA are soon shipping from Adtran. True gigabit is here. Sales takeoff is almost in sight, probably Q1 2018.
Australia confirms 1M, AT&T is ready to ramp, DT finally is moving. Omantel and Telkom South Africa are now on the map. Almost all telcos are now choosing G.fast for large buildings when they don't go FTTH. MNet Cologne and Chunghwa Taiwan have changed from fiber all the way to G.fast in the basement.

212 MHz and cDTA Are Ready: Adtran http://bit.ly/GF212cDTA
Frank Miller of Century: G.fast Will be Important to Us http://bit.ly/GFCentury

Carl Russo: Since 2007, I've Been Turning Calix Into a Software Company http://bit.ly/CalixSDN

Adtran Chosen for Australia nbn Fiber to the curb. http://bit.ly/GFnabAus

nbn looking to a million lines. This one is big. Adtran is on a roll, with DT & AT&T also looking good for 2018.

1,400,000,000 In The Works. 1.4 Gigabits http://bit.ly/GF14Gig
South Africa & Connecticut Go Nokia http://bit.ly/SouthAF

Omantel: 90% Fiber & G.fast http://bit.ly/Omantel

 

Read more ...