Tag Archives: DOCSIS 3.0

Advanced Troubleshooting in a DOCSIS 3.0 Plant

January 26, 2012   Brady   2 Comments
DOCSIS 3.0 Advanced Troubleshooting

If you missed the SCTE Cable-Tec 2011, I am making available my presentation and white paper on Advanced Troubleshooting in a DOCSIS 3.0 Plant. Each speaker had only 20 minutes to cover topics that could easily last hours, so the presentations are understandably brief. Below you will find my presentation in “Slideshare” for online viewing as well as a fully downloadable PowerPoint version. The PowerPoint version also has reader notes attached at the bottom of each slide which you may find useful. In addition, the animations work a little better in the downloadable version.

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We are back! SCTE Piedmont Chapter in NC

January 04, 2012   Brady   No comments
DOCSIS 3.0 Speaking Engagements

Don’t Miss out on the Encore Presentation!
Come see John Downey and I in another day-long DOCSIS 3.0 Troubleshooting, Implementation, and Planning presentation. We will be covering a wide variety of DOCSIS 3.0 topics, answering as many questions as you can ask, and providing you with an entertaining presentation – no one calls us boring!

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DOCSIS 3.0 | Impaired Service

December 21, 2011   Brady   2 Comments
DOCSIS 3.0 Impaired Service

“Impaired Service” in which case one or more bonded upstream channels are impacted by upstream RF impairments while other bonded channels are not. Since subscriber data is striped (that is broken into pieces and spread across each upstream channel and then re-assembled by the CMTS), some of the data will be lost or have errors while other data will not. Subscribers will most likely notice an impaired condition as upstream data rates slow down due to TCP/IP transmissions and/or VoIP, gaming, teleconferencing and other real-time applications will be noticeably impacted.

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DOCSIS 3.0 | Partial Service

December 07, 2011   Brady   1 Comment
DOCSIS 3.0 Partial Service

Partial Service is a new term encountered in the DOCSIS 3.0 MULPI specification and realized in field deployments of DOCSIS 3.0 cable modems using upstream bonding. This was a topic that I touched on in this years SCTE Cable-Tec Expo, but will explore in greater detail in this article. Partial service can be considered a feature because the cable modem will stay online even when one or more upstream transmit channels goes offline.

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Fresh Tech | DOCSIS Protocol Analyzer – Can’t stop a good idea!

November 22, 2011   Brady   No comments
DOCSIS Xpert Protocol Analyzer

When I first heard rumor that a knew company had a DOCSIS protocol analyzer floating around I had to see it! With full disclosure, many of you know that after 10 years in RF and fiber-optic transport equipment, I spent a few years designing, marketing and selling DOCSIS protocol analyzers. More specifically I focused on making them available to cable operators because I knew they could detect really difficult to isolate problems. Averna know owns the technology from my Sigtek days, so it is nice to see a new competitor in the space. What’s more is that its nice to see this competitor at SCTE Cable-Tec Expo who is interested in cable operator’s issues.

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Piedmont Chapter DOCSIS 3.0 Training

November 01, 2011   Brady   No comments

John Downey and I will be speaking on November 2, 2011 at the Piedmont SCTE Chapter about DOCSIS 3.0 Troubleshooting, Implementation,  and Planning.  This is the first speaking engagement under my new consulting company The Volpe Firm, Inc., so I am truly vendor neutral and will be to field questions on any topic. More details on the Piedmont Chapter

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BTR | Rollouts Continue as DOCSIS 3.0 Matures

September 28, 2011   Brady   No comments
DOCSIS 3.0 Matures

The following article just released by Broadband Technology Report was written by Carl Weinschenk.  A number of us from the industry contributed to Carl’s piece, but it is a nice high-level summary article on the status of DOCSIS 3.0.  Below you will find a snippet of the article with a link to the BTR website

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DOCSIS 3.0 Speaking Engagements

September 11, 2011   Brady   2 Comments
DOCSIS 3.0 Speaking Engagements

See me present at IBBS’s symposium during September 13-14, 2011 or Cable-Tec Expo during November 15-17, 2011 on DOCSIS 3.0 test equipment and troubleshooting.

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Why are my DOCSIS 3.0 cable modems transmitting at 52.2 dBmV?

September 09, 2011   Brady   3 Comments
DOCSIS 3.0 Cable Modem Maximum Transmit Power

A recent question from a reader provided an interesting response – the answer: maximum transmit power is 52.2 dBmV for DOCSIS 3.0 cable modems under certain conditions. The answer is very simple. They were transmitting at their maximum transmit level. That being in a 16-QAM modulation with four bonded upstream channels.

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Top 10 DOCSIS 3.0 Terms You Need to Know

September 05, 2011   Brady   No comments
Top 10 DOCSIS 3.0 Terms

This is the speak you need to know when talking DOCSIS 3.0 to any DOCSIS Engineer or specialist. It is important that you learn the full name, in many cases the acronym and also what value the particular terminology plays in a DOCSIS 3.0 network as it will likely be crucial in troubleshooting tough-to-diagnose DOCSIS impairments.

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