DOCSIS Archives

13 02, 2020

Misunderstood RF Measurements

Mia Colabrese2021-08-17T10:50:22-04:00February 13th, 2020|

Hello Everyone. This is episode 55 of Get Your Tech On, our show on All Things DOCSIS. I'm Brady Volpe, Founder of The Volpe Firm and Nimble This. John Downey is with me and also CMTS Technical Leader at Cisco Systems, and Ron Hranac also of Cisco Systems, welcome John and Ron. Today we are going to discuss Top Commonly Misunderstood RF Measurements. An overall discussion on confusing topics and commonly misunderstood RF measurements in cable. Over 100 years of RF knowledge. Topics Covered: Fun Math problem

21 01, 2020

Cable Haunt: Exploiting DOCSIS Modems

Mia Colabrese2021-12-15T10:13:01-05:00January 21st, 2020|

*Updated* (see patch for Cable Haunt at end of post) Cable Haunt is the fancy name given for a vulnerability recently disclosed by a group of researchers at Lyrebirds in Denmark exploiting DOCSIS modems. Cable Haunt affects cable modems using the Broadcom chipset specifically having the built-in spectrum analyzer many of us in the industry are quite fond of. Typically the forward path spectrum analyzer or Full Band Capture (FBC) analyzer in the broadcom chipset is used by the industry for proactive network maintenance (PNM) applications to

19 12, 2019

DOCSIS Evolution

Mia Colabrese2021-08-15T18:29:09-04:00December 19th, 2019|

Where we were and where we are going Hello Everyone. This is episode 54 of Get Your Tech On, our show on All Things DOCSIS. I'm Brady Volpe, Founder of The Volpe Firm and Nimble This. John Downey is with me and also CMTS Technical Leader at Cisco Systems, welcome John. Today we are going to discuss DOCSIS Evolution But first from watchers: This is in reference to another episode (52) where we were discussing another viewer’s (Jessie) issues with Hitron modems: Jason writes: Hey there! I watch the

5 12, 2019

DAA Pros and Cons

Mia Colabrese2021-08-15T18:32:06-04:00December 5th, 2019|

Distributed Access Architecture Pros and Cons for cable operators Hello Everyone. This is episode 53 of Get Your Tech On, our show on All Things DOCSIS. I'm Brady Volpe, Founder of The Volpe Firm and Nimble This. With us is, John Downey, in the flesh. John is also CMTS Technical Leader at Cisco Systems, welcome John. Today we are going to discuss DAA Pros and Cons. But First Question from Watcher: Love the podcast, so thanks! Secondly, as we know DOCSIS 1.1 introduced BPI+ in 2001. Well

8 11, 2019

CMTS Status Event List

Mia Colabrese2019-11-08T12:26:02-05:00November 8th, 2019|

CMTS Status Event List definitions for Cable and Broadband Technicians. Learn about the CMTS event list and how it can help you understand CMTS status lists Secondary Channel MDD timeout QAM/FEC lock failure Sequence out of range MDD recovery QAM/FEC lock recovery T4 timeout T3 re-tries exceeded Successful ranging after T3 re-tries exceeded CM operating on battery backup CM returned to A/C power MAC Removal Event DS OFDM profile failure Primary Downstream Change DPD Mismatch Invalid DPD NCP Profile Failure Loss of FEC Lock on PLC NCP Profile

30 10, 2019

Technology Trends In Cable

Mia Colabrese2023-08-28T12:53:32-04:00October 30th, 2019|

Low Latency DOCSIS, RF is sexy again, 5G, 10G, Coherent Optics and more Hello Everyone. This is episode 52 of Get Your Tech On, our show on All Things DOCSIS. I'm Brady Volpe, Founder of The Volpe Firm and Nimble This. With us is, John Downey, in the flesh. John is also CMTS Technical Leader at Cisco Systems, welcome John. Also with us is Mia Colabrese of The Volpe Firm and Nimble This. Today we are going to discuss Technology Trends in Cable. BUT First - John

24 09, 2019

DOCSIS Cable Connector Basics

Mia Colabrese2021-08-15T18:35:46-04:00September 24th, 2019|

Craft issues in coax can create havoc later on... Happy Friday Everyone. Today is September 20th and this is episode 51 of Get Your Tech On, our show on All Things DOCSIS. I'm Brady Volpe, Founder of The Volpe Firm and Nimble This. With us is, John Downey, who will strike a pose at this years SCTE EXPO. John is also CMTS Technical Leader at Cisco Systems, welcome John. Also with us is Rich Maroney Product Line Manager Coaxial Cable from PPC. Today we are going to discuss

21 08, 2019

High Latency is “Killing” you

Mia Colabrese2019-08-21T10:30:19-04:00August 21st, 2019|

Why is Low Latency DOCSIS Relevant to Gameplay and Why You Should Care Gaming is a billion-dollar industry with billions of players, and they use broadband to get there. I’ve spent a lot of time discussing the importance of low latency DOCSIS over the last couple of years on my podcast and YouTube channel. Let’s dive into it a bit more. Low latency or ping is desirable to achieve smoother gameplay and a user experience without lagging. If the ping is around 1000 milliseconds or higher, it’s definitely

19 07, 2019

T3 & T4 Timeouts Cable Modem Registration – Back to Basics

Mia Colabrese2021-08-15T18:42:34-04:00July 19th, 2019|

Happy Friday Everyone. Today is July 12th and this is episode 49 of Get Your Tech On, our show on All Things DOCSIS. I'm Brady Volpe, Founder of The Volpe Firm and Nimble This. With us is, John Downey, who recently carried a CBR-8 on his back, up Mount Kilimanjaro to ensure broadband service. John is also CMTS Technical Leader at Cisco Systems, welcome John. Todays show: Upstream MER registration explained Cable modem registration T3 and T4 Timeouts In The News: https://www.lightreading.com/cable/ccap-next-gen-nets/comcast-commits-millions-to-harmonics-cableos-platform/d/d-id/752671 Comcast Commits Millions to Harmonic's

24 06, 2019

Low Latency and Virtualization

Mia Colabrese2021-08-15T18:44:51-04:00June 24th, 2019|

Happy Friday Everyone. Today is June 14th and this is episode 48 of Get Your Tech On, our show on All Things DOCSIS. I'm Brady Volpe, Founder of The Volpe Firm and Nimble This. With us is, John Downey. John is also CMTS Technical Leader at Cisco Systems, welcome John. AQM (active que management) Mini slot proactive grant service OFDMA John thank you for your time today. This was a great episode. Our next Episode 49 is scheduled in July 12. We do our best to bring our