An industry leader in test points out the key steps. Lincoln Lavoie at the University of New Hampshire, working with the Broadband Forum, runs the model test lab for DSL. They perform the crucial interoperability testing for the Forum. Working with the Forum, they brought an interop demo to BBWF, to show the world that G.fast chips are effectively communicating with each other.
Lavoie just published an article at Electronic Design, Best Practices for G.fast System Testing. He notes that both VDSL2 & G.fast incorporate "seamless rate adaption (SRA), bit swapping, retransmission, dying gasp, and vectoring," all of which need to be tested. Testing is also needed for G.fast features, "robust management channel (RMC), dynamic resource allocation (DRA), and fast rate adaption (FRA)."
Using a switch, noise generator, digital signal analyzer (signal-capture system), and Ethernet traffic generator, UNH can test most of the features of the equipment.
Broadcom, Metanoia, and Sckipio chips communicate. For more than a decade, the industry has come together at the University of New Hampshire to confirm chips work well together. No standard - even the 300 pages of G.fast - covers everything. No company is likely to include everything in those 300 pages. But they have to work well in the field. A gateway with a Metanoia chip needs to connect robustly with a DSLAM with a Broadcom chip. Customers hate to be locked into a single source so demand vendors solve the problems.
Live at the Broadband World Forum, the major vendors connected their gear and a Telebyte tester (pictured.) They've been meeting regularly at the new lab at UNH; all report progress but there's still much work to do. Additional plugfests were scheduled for November and January.
Lincoln Lavoie of UNH is The Man on DSL interoperability.
Three days with some of the best in the world of G.fast. In 2017, they will share the experience of hundreds of thousands of lines deployed. The atmosphere is informal but the technical level very high. The venue is a pleasant conference center near CDG. The event was large enough to include virtually all the companies in the industry but small enough for everyone to be heard. I chaired and also did a three hour, first-day seminar to bring newbies up to speed.
Speakers aren't announced yet but have included John Cioffi, the leaders of deployments at BT (ten million!), Swisscom, Belgacom/Proximus, CTOs of the major vendors, and many of the men who defined the standard. Remi Scanvenius of Upperside invites those recommended by an expert panel. Knowledgeable speakers are welcome whether or not their companies buy sponsorships. Marketing VP's giving sales pitches are not wanted; top engineers very welcome.
Paris. May 9-11. See you there.
“Everything we do from now on will be based around G.fast,” according to Swisscom’s Oliver Lamparter, blogs Australia's nbn. Their first 1,000 lines have convinced them. Swisscom two years ago planned a multi-technology buildout. From here on, most of it will be FTTP in new builds, G.fast/fiber to the street in existing homes. Lamparter added, "We don’t envisage extending the FTTP footprint too much further in Brownfield areas because G.fast gives us a much better way of delivering ultra-fast services.”
Some more details from Swisscom's financial call. "So we have today the Wireline business, an ultra-broadband footprint of 3.4 million households, which has a bandwidth of 50 megabits per second. We implemented also G.fast, as the first operator in the EU, which will bring faster speeds on our network. We will be able to deliver up to 500 megabits per second speeds on our fiber-to-the-street footprint. The goal in the Wireline business is to have a coverage of 85% with a bandwidth of over 100 megabits per second in the year 2020."
Both Huawei and Nokia were hopeful of winning the contract. They are sharing the next phase at British Telecom, over 100,000 lines in the next six months.