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Improving HFC Performance with Proactive Network Maintenance (PNM)

By Rick Yuzzi | July 28th, 2022 |Categories: PNM, proactive network maintenance, What is DOCSIS PNM, Extending HFC Life, reduced maintenance costs

Cable operators have long known the benefits of having more fiber in their Hybrid Fiber Coax (HFC) plant, and for some, especially so, as they have taken fiber all the way to the premises in greenfield deployments. They have seen firsthand that an [...]

The Power of Proactive Network Maintenance (PNM)

By Rick Yuzzi | December 7th, 2021 |Categories: PNM, proactive network maintenance, correlation groups, DOCSIS pre-equalization, PreEqualization Analyzer, Diagnostics, Main Tap Compression, Group Delay, In Channel Frequency Response, ICFR, Micro Reflections, What is DOCSIS PNM

What is PNM?

DOCSIS Proactive Network Maintenance (PNM) is a relatively new tool for cable operators that allows them to find and resolve issues in the cable plant before they impact subscribers. For most of the history of cable plant maintenance [...]

What is DOCSIS PNM and Why You Need It

By Rick Yuzzi | January 9th, 2019 |Categories: PNM, proactive network maintenance, correlation groups, DOCSIS pre-equalization, PreEqualization Analyzer, Diagnostics, Main Tap Compression, Group Delay, In Channel Frequency Response, ICFR, Micro Reflections, What is DOCSIS PNM

Diagnostics tools on a DOCSIS network have traditionallybeen part of a reactive, break-fix methodology, where the operator is notified about issues in their plant AFTER service for subscribers have been impacted. In fact, it is often complaints [...]

DOCSIS 3.1 Series: PNM - A 3-Step Plan for Success Part Three

By Sheenika Wilson | July 22nd, 2015 |Categories: Blog, Technology, case study, DOCSIS, Fidelity Communications, PNM, proactive network maintenance

The days of using the "break/fix" method of troubleshooting cable plant issues are quickly fading, and cable operators have DOCSIS Proactive Network Maintenance (PNM) to thank for that. With PNM in use, operators are able to identify network [...]

DOCSIS 3.1 Series: DOCSIS 3.1 and the PNM Toolbox Part Two

By Marsha Hemmerich | July 15th, 2015 |Categories: Blog, Technology, DOCSIS 3.1, DOCSIS, PNM, proactive network maintenance

If you read last week’s Part 1 in our DOCSIS series and the white paper on the Evolution of DOCSIS, you now have a better understanding of why we have specifications, what those specifications can do for the cable operator’s business and what the [...]

Correlation Groups and vTDR in Proactive Network Maintenance

By Sheenika Wilson | October 1st, 2014 |Categories: Ask an Expert, PNM, proactive network maintenance, correlation groups, ask a broadband expert, PreEqualization Analyzer, vTDR

As its name suggests, proactive network maintenance (PNM) allows cable operators to get ahead of the curve in being able to diagnose issues in the cable plant. When network impairments are concentrated in an area, it’s easier to locate the problems [...]

Finding Common Impairments with DOCSIS Proactive Network Maintenance

By Marsha Hemmerich | September 19th, 2014 |Categories: Ask an Expert, PNM, proactive network maintenance, correlation groups, ask a broadband expert, DOCSIS pre-equalization, PreEqualization Analyzer, technical paper

Proactive network maintenance (PNM) and DOCSIS pre-equalization are important tools to mitigate upstream impairments. When a CMTS has pre-equalization enabled, it can look at the quality of the signals being received from all of the cable modems [...]

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