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  

Telebyte is also ready with 35b vectored test equipment. You want to catch equipment problems in the lab because serious field trials cost millions. But how do you test the 300-page standard? Michael Breneisen's company chose to work closely with the Broadband Forum and their equipment is designed around the Forum's test suite. They've outfitted a lab at the University of New Hampshire which hosts the Forum's interoperability testing.

Breneisen tells me the most frequent problems in early equipment were in the stability of FEXT cancelation and noise protection. Once discovered, manufacturers corrected most of them. Looking forward, he believes the industry needs to be able to test sucessfully Interoperability between chipset vendors.

Field tests reveal even more. TNO's Rob van den Brink gave an outstanding presentation at last year's Ultra Broadband Forum. He offered surprising observations from DSL field results in the Netherlands. I always remain skeptical of company claims until we have results from 10,000 customers.

Here's the pr.

Telebyte Announces Release of Cable Farm Automation Switch

By  on January 18, 2016

Next-Gen Switch Designed Specifically for Automating and VDSL2 Vectoring Testing

Hauppauge, NY (PRWEB) January 18, 2016

Telebyte, a US-based global xDSL test equipment solution provider, today announced the release of the Model CFA-24 Transparent Cable Farm Automation Switch – the only switch on the market designed for testing the Broadband Forum’s ID-337 and TR-249.

The 24-channel, electrically neutral device allows up to twenty-four incoming cable farm lines to be switched to five different copper loop segments. Operating in a frequency band up to 212 MHz, the CFA-24’s superior performance and transparency facilitates lab-grade testing of VDSL2 Vectoring (including Profile 17a and Profile 35b) or devices where accuracy is extremely important.

The CFA-24 is the company’s first product designed for programmatic control of multiple copper loop segments. Line lengths and increments are set without re-cabling. The user makes connections once then switches loop segments in (or bypasses them) as needed through a web browser. Remote commands can be used to set line lengths for test automation. Additional features include Micro-Interruptions and support for Reverse Powering (

In keeping with the modular approach to most of Telebyte’s products, units may be added as testing requirements expand or budget becomes available. This allows customers to purchase an initial system and later extend the number of loop segments to as many as fifteen and/or expand the number of channels to as many as needed by purchasing additional units.

“Our customers were looking for a way to avoid connecting and disconnecting loop segments in their cable farms manually. They wanted to simply switch in or bypass segments programmatically,” said Michael Breneisen, President of Telebyte. “Customers reported dissatisfaction with other products that were repurposed for this type of testing so we decided to design a product from the ground up to meet both VDSL2 Vectoring and testing requirements. We are very pleased this release coincides with the high demand for ID-337 Certification testing and TR-249 testing.”

Finally, the CFA-24 may be used with Telebyte’s noise generators and injectors to add alien crosstalk, impulse, RFI and more for realistic testing

Telebyte Announces New Release of Universal Noise Generator

First commercially available Noise Generator to support ID-337 Certification testing

(PRWEB) January 14, 2016

Telebyte, the leader in test equipment, today announced the release of the Model 4902 Universal Noise Generator. The next-gen solution is the only commercially available noise generator on the market that is fully compliant with the Broadband Forum’s ID-337 Certification Test Plan.    

The solution builds upon its feature-rich predecessor, the popular Model 4901 which is already used around the world by most major service providers and equipment vendors. The modular design allows for expandable configurations from 2 to 24 noise outputs in portable or rack-mountable versions.

Telebyte includes user-friendly configuration software that allows the user to select and build a wide variety of complex impairment models that may impact deployments. These include background Gaussian noise, high frequency impulse noise (PEIN, SHINE), FM radio, Broadcast TV, Spark Plug Ignition noise, PLC noise, Reverse Power Feed noise and more. In addition, user-defined files in several formats (such as MATLAB. CSV and Excel) may be imported.

“Several major North American and European Service Providers are using Telebyte’s test gear to evaluate the performance technology,” said Michael Breneisen, President of Telebyte. “The equipment is in great demand. With our ability to meet this need we are now recognized as the established leader in the test equipment area.”



The Site for gfast 230 News
A remarkable 400 people attended the very strong Broadband Forum BASE events in Berlin and Las Vegas. Trevor confirmed BT would pass the million this year. Cioffi projected “Waveguide DSL” could carry 10 gigabits a kilometer as well as a terabit 100 meters. Werner sees a 4X improvement in upstream with cDTA. Much more in next issue.

Deutsche Wants a Gigabit, Finally Realizes 50 Meg Isn't Enough
Deutsche Telekom is finally realizing that 50 megabit DSL won't make it against gigabit cable. VP Franz Seiser is blunt. "We must change radically, become disruptive and, above all, throw away things," he proclaims at BBWF. After years of DT insisting 50 megabits is plenty, we now hear "it is about Gigabit products" from DT's Robert Soukup.  
    A lucky building in Frankfurt will receive 500+ megabit service as ultra-conservative Deutsche Telekom experiments with Soukup told BBWF, "We're going to have a field test in Frankfurt with and Fiber To The Building (FTTB.) We will know by the end of the year if this is the right way to go." Hint to Soukup: Yes it is. is working well at a dozen telcos I;ve talked to.
     The details are surprising. DT is going for CORD, Open Source, Calix, and Radisys.

*** The new Telebyte Guide to Testing Gfast follows the Broadband Forum IR-337 Gfast test specification, the same used by the University of New Hampshire (UNH-IOL) for Gfast certification testing. Free download (ad) It is the best technical guide to  I have seen. Grab it. Dave

1.6 Gig in Sckipio-Calix Test
A telco tells me they are getting impressive early results from the Calix 48 port DSLAM with the new Sckipio 212 MHz chips. There still is work to do but this is encouraging. 
    Carriers want DSLAMs with more than 16 ports to reduce the deployment costs from the basement or larger field cabinets. Speed matters to the marketing side of the company; AT&T's CEO believes he must offer a true gigabit to match cable. (They've been getting ~750 megabits with first generation chips.

*** Self-Healing Wi-Fi With ASSIA Real-Q 
Beyond-the-Box visibility and control extends quality-of-experience (QoE) beyond the gateway to the end-user device for every device in the home. Based on ASSIA technology, proven across 80 million subscribers (ad)

Reverse Power 4 Port DSLAM for Australia
Australia is connecting 1M homes to, some with a Netcomm distribution point mini-DSLAM. It's a small unit designed for pole or pit mounting. It's waterproof, pressure proof, and temperature resistant. Their matching home modem is bittorrent friendly, with two USB ports for a hard drive dedicated to sharing.
     A reverse power unit at the customer, the NDD-0100-01, can save the cost of bringing power to the DSLAM. They don't expect many orders until the second half of 2018, as nbn is waiting for the second generation chips. Netcomm demonstrated RP with BT Openreach in August.

*** Sckipio's Three advances are taking to the next level. (ad)

Australia Makes it Official: to Million Plus
No news here. In September, 2015, I reported Australia's nbn Going This June. I reported the million home fiber to the curb (kerb?) was beginning. Unfortunately, they are no closer to figuring out where to find the needed $10B to $20B to cover the cost overruns. Instead, the parties are battling in Parliament about who is to blame.

2 Bonded 212 Lines = 3 Gigabits
Sckipio at BBWF is demonstrating 3 gigabits down, nearly a gigabit up, over two phone lines, bonded. Twice the bandwidth (212 MHz instead of 106 MHz) times two lines is fast. Sckipio does great demos; at CES, they showed first generation chips delivering almost 1 gig upstream.
    “Sckipio is pushing Gfast to astonishing speeds with production silicon,” CEO David Baum proclaims. Calix is using the SCK23000 chipset in their 48 port gig+ DSLAM at the show.

Read more ...