troubleshooting Archives

12 09, 2016

Proactive Network Maintenance (PNM) with Larry Wolcott, Leader at Comcast’s Next Gen Technology Group

Mia Colabrese2021-08-16T19:52:13-04:00September 12th, 2016|

Proactive Network Maintenance (PNM) with Larry Wolcott, Leader at Comcast’s Next Gen Operations Technology Group Episode 23 Hosted by Brady Volpe of the Volpe Firm, this podcast will focus on Proactive Network Maintenance (PNM) and the next generation in technology in 2016 and a peak of what is to come in 2017. Guest John Downey, CMTS Technical Leader at Cisco Systems. Special Guest Larry Wolcott, Leader at Comcast’s Next Gen Operations Technology Group. Proactive Network Maintenance (PNM) Transcription So in our show today we going to have a lot of discussions around proactive

8 08, 2016

Top Reasons Cable Modems are not Getting Expected Speed and CMTS Monitoring

Mia Colabrese2021-08-16T20:05:30-04:00August 8th, 2016|

Cable Modems not Getting Speed - Top Reasons Cable Modems are not Getting Expected Speed and CMTS Monitoring Episode 22 Hosted by Brady Volpe of the Volpe Firm, Nimble This and Guest John Downey, CMTS Technical Leader at Cisco Systems. Today’s show we will cover cable modems not getting speed and monitoring your CMTS for proper Cable Modem State and Service Flow Operation. At the bottom John has supplied us with his presentation if you would like to listen along with viewing the slides. There were some technically issues

26 01, 2015

Full Band Capture a Spectrum Analyzer in DOCSIS Cable Modem Episode 9

Mia Colabrese2021-08-17T09:11:29-04:00January 26th, 2015|

DOCSIS 3.0 Full Band Capture and So Much More Episode 9 Hosted by Brady Volpe of the Volpe Firm and Nimble This with guest John Downey of Cisco. Brady and John cover the benefits of the latest technology available (full band capture) in DOCSIS 3.0 cable modems such as: Full band capture offering spectrum analyzer functionality in every subscriber home with DOCSIS 3.0 modem Extended transmit power allowing cable modems higher transmit power when in bonded modem with the new CableLabs ECR Built-in FTP transfer allowing local speedtest functionality PNM

29 09, 2014

SCTE EXPO 2014 Technology Review Episode 6

Mia Colabrese2021-08-17T09:32:14-04:00September 29th, 2014|

SCTE EXPO 2014 Technology Review Episode 6 Hosted by Brady Volpe of the Volpe Firm and Nimble This with Guest John Downey of Cisco. With a review of SCTE EXPO. The discussion is on all things DOCSIS. Tips, suggestions and recommendations. Another power hour of cable with Brady Volpe and John Downey CMTS Technical Leader at Cisco. The discussion is on all things DOCSIS. Discussion Highlights DOCSIS 3.1 Symposium Remote PHY PNM Wi-Fi SCTE EXPO 2014 Show Highlights Best give aways We do our best to bring our audience

18 06, 2014

DOCSIS Channel Bonding – Your Questions Answered Friday June 20th

Mia Colabrese2021-08-17T10:58:02-04:00June 18th, 2014|

DOCSIS Channel Bonding - Your Questions Answered Presented by Brady Volpe of The Volpe Firm and Nimble This and with guest John Downey. DOCSIS Channel Bonding with a focus on Upstream (US), Downstream (DS), Partial mode, BW allocation, and SG sizing. About John - John has over 20 years in the data/telecommunications/networking industry with a 4 year BS in Electrical Engineering from Penn State University. He has been working for Cisco the last 13 years as a Broadband Network Engineer presently with the Cable and Access Business Unit (CABU).

22 04, 2014

DOCSIS Pre-Eq and PNM – Part Two

Mia Colabrese2021-08-17T11:03:31-04:00April 22nd, 2014|

The Benefits of DOCSIS Pre-Eq and PNM :: (Part 2) Presented by John Downey of Cisco and Brady Volpe of The Volpe Firm and Nimble This as a follow up to Part one (which can be viewed here) Part two we will cover how pre-equalization data can be used to identify upstream impairments through Proactive Network Maintenance (PNM) and why this is valable to a cable operator. Proactive Network Maintenance (PNM) in combination with DOCSIS pre-equalization are game changing technologies for the cable industry. PNM started as a technology research

22 01, 2014

DOCSIS 3.1: Modulation Options and Impacts – Part Two

Mia Colabrese2023-02-17T13:02:40-05:00January 22nd, 2014|

What’s Next for DOCSIS 3.1 Modulation Options and Impacts DOCSIS 3.1 modulation - Many wonder how today’s networks will support high order modulations such as 4096-QAM. There are two technologies in the DOCSIS 3.1 standard that will enable this without requiring changes to existing outside plant. The first is Orthogonal Frequency Division Multiplexing (OFDM). This is a complex word for taking many small QAM channels, like 25 kHz instead of 6 MHz, and placing them very close together. OFDM also has dynamic properties. If you have a block

11 11, 2013

DOCSIS Burst Demod – SCTE EXPO 2013 – Fresh Tech

Mia Colabrese2013-11-11T09:00:21-05:00November 11th, 2013|

DOCSIS Burst Demod SCTE EXPO 2013 - Fresh Tech There were some new and exciting things at this years SCTE. There was a good drum line at the opening event but also there were new products and innovative ideas (Cisco and PNM). In test equipment this year at the SCTE EXPO Rohde and Schwarz, JDSU and VeEx all had some new things on display. None of the items are currently shipping (with the exception of R&S who used existing equipment) but it does show that test equipment vendors are

17 10, 2013

DOCSIS Pre-Equalization

Mia Colabrese2020-04-04T11:42:09-04:00October 17th, 2013|

DOCSIS Pre-Equalization This paper will first provide a brief primer on DOCSIS to establish a baseline for the document. Next the paper will examine what is DOCSIS pre-equalization. How DOCSIS pre-equalization works and how DOCSIS pre-equalization can be extended. In the greater context of the paper, the reader must consider the implications of the extensions of DOCSIS pre-equalization. In section 5, details will be provided on how DOCSIS pre-equalization can be used to identify plant impairments and locate those impairments to within a few feet. This turns every

13 10, 2013

Solving Problems DOCSIS PNM

Mia Colabrese2021-08-18T09:55:46-04:00October 13th, 2013|

Solving Problems with DOCSIS PNM Solving problems with DOCSIS PNM in the outside plant is one of the most exciting aspects of PNM. If this if the first time your reading on my PNM articles, check out my first and second articles on the PNM application. This is some really cool tech to come to the cable industry. The premise is that we are turning cable modems into troubleshooting devices. So far I've really just introduced the concept, so in this article I will give a real world example that