DOCSIS Archives

3 10, 2013

DOCSIS PNM DEMO SCTE EXPO 2013 CableLabs Booth #1969

Mia Colabrese2020-04-04T09:20:40-04:00October 3rd, 2013|

DOCSIS PNM DEMO SCTE EXPO 2013 - CableLabs Booth #1969 Come See a DEMO of the exciting DOCSIS PNM Technology at this years SCTE Cable Tech Expo in the CableLabs Booth #1969. Brady Volpe will be giving demonstrations. To find out more about PNM you can also attend one of two PNM presentations or watch a brief tutorial overview. "By using PNM as network probes, cable operators can collect device and network parameters. Combining the analysis of the data along with network topology and device location, it is

30 09, 2013

Smart DOCSIS CMTS Upgrade

Mia Colabrese2021-12-14T15:36:26-05:00September 30th, 2013|

Making a DOCSIS CMTS Upgrade? Make sure you have done your homework. With all of the publicity focussed on DOCSIS on DOCSIS 3.1 many cable operators still have existing networks that are running DOCSIS 2.0 or even DOCSIS 1.1. Many conversations arise around what is the best path forward on making a smart DOCSIS CMTS upgrade. Should investments be made in addition DOCSIS CMTSs identical to equipment already installed? This is especially true when there is a lot of existing DOCSIS 1.1 and 2.0 equipment available at rock

9 09, 2013

What is DOCSIS PNM?

Mia Colabrese2021-08-17T16:17:19-04:00September 9th, 2013|

What is DOCSIS PNM and How Does it Work? Recently I wrote about DOCSIS PNM technology and a company working on is called Nimble This. In this article I want to highlight a mechanism behind how DOCSIS PNM works. DOCSIS Pre-Equalization DOCSIS PNM begins with a relatively well known DOCSIS feature called DOCSIS pre-equalization. I've previously covered adaptive pre-equalization, but here is a refresher. Starting with DOCSIS 1.1, pre-equaliztion was added to DOCSIS cable modems. It was later improved in the DOCSIS 2.0 standard adding more equalizer taps

26 08, 2013

DOCSIS 3.0 Cable Modem Registration with T3 & T4 Timeouts Poster

Mia Colabrese2024-03-01T14:07:16-05:00August 26th, 2013|

Our Popular "DOCSIS 3.0 Cable Modem Registration with DOCSIS T3 T4 Timeout Poster" is Back. DOCSIS T3 T4 timeout poster is 23 x 35 inches and a must have for your headend. That's approximately two feet by three feet. It's a nice size to hang up in your headend or in your office. It's extremely popular and we only have a limited quantity left. We have a limited quantity of posters that we will be distributing at the SCTE EXPO or you can leave us a comment below

21 08, 2013

DOCSIS PNM – Something Really Interesting!

Mia Colabrese2021-08-18T09:15:32-04:00August 21st, 2013|

DOCSIS PNM - Get Excited! Awhile back I wrote an article about DOCSIS Proactive Network Maintenance (PNM). Not only did I find this technology fascinating I decided to really get involved with PNM. I will also be speaking at SCTE EXPO on the topic of PNM this year. Topic: DOCSIS Pre-Equalization: Vastly Powerful, Often Undervalued For those of you who have not heard of PNM, here are the highlights. DOCSIS Proactive Network Maintenance (PNM) developed by InGeNeOs™ under Cablelabs®. It is one of the coolest technologies I've been involved

6 08, 2013

A Briefer History of CableTV

Mia Colabrese2021-11-29T14:49:22-05:00August 6th, 2013|

A Briefer History of CableTV For those in the know... A briefer history of CableTV provides an abridged version of how we got to where we are now and CableTVs impact on modern-day test equipment. Looking at the history of CableTV, its beginnings were very humble with many taking credit for its first invention. Let us not delve into those disputes, but look towards where CableTV really started to emerge in the mainstream. It was not until 1947, post WWII when TV began to start getting momentum with

2 07, 2013

DOCSIS & Testing Best Practices in an All Digital Network

Mia Colabrese2021-11-24T10:51:51-05:00July 2nd, 2013|

DOCSIS & Testing Best Practices in an All Digital Network ANGACOM - 2013 Missed ANGACOM 2013? Don't worry, you can still see the presentation on DOCSIS & Testing Best Practices in an All Digital Network along with the speaker notes for each slide. This was only a 15 minute presentation, so time was limited on the depth of material that could be covered in the time given. Slide 2 – Overview What do I mean by all digital networks and why is the cable industry moving in this

1 10, 2012

Cable Modem Registration | A Second Look

Mia Colabrese2021-08-17T10:17:11-04:00October 1st, 2012|

DOCSIS Cable Modems Registration Process Even the most interesting man in the world enjoy's the DOCSIS cable modem registration process, so it is worth a second look. It is one of the most popular topics because it covers a wide range of how DOCSIS works, from physical layer to Internet protocol (IP) layer. It is therefore worthy of an encore article with more depth and an update to include DOCSIS 3.0. During the cable modem registration process it is important to understand that three (3) different levels of

24 09, 2012

DOCSIS Return | Dirty Fiber Optic Connectors

Mia Colabrese2012-09-24T03:14:16-04:00September 24th, 2012|

An often overlooked, but easy to resolve RF impairment are loose and/or dirty fiber optic connectors. This issue often manifests itself as an increased noise floor when viewed on a spectrum analyzer. The key to determining the difference between regular ingress and fiber connector noise is that the noise created by a loose or dirty fiber connector does not stop at the diplex filter roll-off frequency (typically 42 MHz in North America and 65 MHz Europe). The image below shows a perfect example of this type of impairment:

17 09, 2012

DOCSIS Codeword Errors | What you should know

Mia Colabrese2024-04-19T10:18:35-04:00September 17th, 2012|

Calculating... Calculating... DOCSIS Codeword Errors - You will likely see them DOCSIS correctable codeword errors and uncorrectable codeword errors are available as a metric in most cable operator monitoring tools and Operations Support Systems (OSS). The monitoring tools and OSS generally provide data and dashboards for users to monitor overall network health and then identify a problem when it occurs. Metrics like codeword errors are extracted directly from DOCSIS CMTSs using Simple Network Management Protocol (SNMP) or Internet Protocol Detail Records (IPDR), the later being preferred due to