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.


Latest issue

Nov 6 News: Deutsche Wants a Gigabit, Finally Realizes 50 Meg Isn't Enough,1.6 Gig in Sckipio-Calix Test, Reverse Power 4 Port DSLAM for Australia, Australia Makes it Official: to Million Plus, 2 Bonded 212 Lines = 3 Gigabits

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Angelina Jolie, Ashley Judd and dozens of others have exposed Harvey Weinstein. Every industry, including ours, has monsters like that, rarely stopped.
    I choose instead to highlight some women who are driving us forward. Nicola Palmer and Sanyogita Sangupta lead Verizon’s 5G effort, the most successful in the world. They will spend $billions and have already put hundreds of cells in the field  
     Verizon jumped ahead when almost all others held back. Charla Rath persuaded the FCC to offer gigahertz of mmWave spectrum three years before the official WRC plan. They supported the NYU work to make a more accurate channel model.
     With allies, VZ created their own 5G standard in 2015 because they didn’t want to wait for 3GPP.  The system commercial in 2018 and will do mobile in 2019 if the handsets are ready.  
     “The race is on” between Verizon and AT&T to be first in each market.10%-20% of people almost everywhere hate their broadband provider and likely to switch to mmWave. The U.S. build is going fast because the two giants expect to find a large market replacing landlines outside of their existing region.
     If they are first in a land grab.

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