illusion faces or vase 230It works and is deployed in dozens of places, including British Telecom and AT&T. T reports typical speeds of 750 megabits, up and down combined. The highest speeds go less than 150 meters, which is fine for fiber to the basement. In 2018, 212 MHz chips will double that speed. Plans include 10M homes passed by BT and a million at nbn Australia.

AT&T and Deutsche Telekom are first doing from the basement for highest speeds. "Wireless to the rooftop" (WTTR) is attractive to others. BT has pioneered long reach to homes, getting speeds of 160 to 330 megabits 300 meters. nbn is running fiber to "distribution points" close to homes, expecting high performance. The small DSLAMs can go on poles or in pits.

Broadcom and Sckipio compete for most chip orders. Sckipio has advanced features while Broadcom offers VDSL compatibility. Metanoia is supplying modem chips to Huawei and Telecom Austria.

Adtran, Calix, Huawei, Netcomm Wireless, Nokia, and ZTE are providing most of the DSLAMs. Adtran supplies AT&T and nbn, among others. Calix has over 60 deployments, many small. They are in trials with Deutsche Telekom as well. Huawei is a contender everywhere except Australia and the U.S., which have security concerns. Australian company Netcomm has large contracts from nbn, Nokia shares the BT contract with Huawei. ZTE has NetCologne and MNet in Munich as customers. All seem to offer reliable equipment. No vendor has convinced me they are far ahead of the others. 

Technicolor, Xyzel, and Taiwan ODMs join the DSLAM vendors in offering modems. Interoperability between modems and DSLAMs from different vendors has been demonstrated at Broadband Forum events, although some problems remain. 

16-24 ports was the maximum with early equipment. Huawei and I believe others are now shipping external vector units that raise that to 48 and 96 ports. Sckipio and Calix in late 2017 showed a 48 port DSLAM which can be linked with another for 96 ports. 

Bonding works and has been demonstrated, but rarely commercially deployed.



April 18

“My three biggest customers are marching to 7 and 5 nanometers.” Lip-Bu Tan. Moore’s Law ain’t dead yet.

Eric Xu, current Huawei Chairman, said consumers would find no “material difference between 4G & 5G.” Dozens of top engineers agree the "5G Revolution" is hokum, including  DT CTO Bruno Jacobfeuerborn, FT/Orange SVP Arnaud Vamparys, and BT CEO Gavin Patterson.
     Politicians and marketers pushed b_______. What’s coming for 5-10 years is good for telco capacity but otherwise disappointing. Unfortunately. 
     On the other hand, mmWave & Massive MIMO are improving at a ferocious rate, advancing telco capacity enormously. Massive MIMO has made it practical to use 3.5 GHz frequencies, a second remarkable booster. The "5G Revolution" is dead; Long Live the real 5G and advanced wireless!
U.S. attacks on Huawei and ZTE look to be an historic disaster.

China’s logical response is to invest to become independent of the U.S. They already have $100B on the table for memory chips and are rumored to add another $100B. Huawei/HiSilicon already holds their own against Qualcomm and everyone else in the world. 
    Zeng Xuezhong of Spreadtrum, world #3 mobile chipmaker, confirms: China will “speed up the chip R&D investment that is self-controlled and self-researched. We must never forget to make it bigger and stronger.”
     U.S. warships patrolling China’s seas inspire security fears. So does Trump’s threat to a country on China’s border."Military solutions are now fully in place, locked and loaded, [for] fire, fury and frankly power, the likes of which the world has never seen before.”
     China would be stupid not to have domestic capacity just in case. The Chinese leadership is not stupid.
The year's best wireless conference is next week. Ted Rappaport, Sandeep Rangan and colleagues bring the world's best engineers to the Brooklyn 5G Conference Summit. This year, Paulraj, Onoe, Fettweis, Katabi, and their peers are coming. Do not miss the webcast, .

April 10

A special report: Who Are The Three Billion? The Color Of The Net Has Changed
1/3rd wireless only, 2/3rds in Global South, 75% not native English speakers.