Cable Modem Archives

22 08, 2013

Troubleshooting Cable Networks

Mia Colabrese2020-04-02T09:57:28-04:00August 22nd, 2013|

CED Presents an Educational Webcast Troubleshooting Cable Networks - Understanding Ingress Impairments Brady Volpe will be a panelist on: "The two-way nature of cable networks is being increasingly exploited for innovative new features and services, including interactive TV applications, video conferencing, data back up, and wireless backhaul (all in addition to high speed data, VoIP, and Internet TV). Growing reliance on the return path highlights the very common problem of upstream cable ingress interferences. MSO's are planning the deployment of DOCSIS 3.1 technology to offer greater downstream/ upstream

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

18 10, 2012

DOCSIS 3.0 Cable Modem Registration, T3 & T4 Timeouts

Mia Colabrese2012-10-18T08:00:46-04:00October 18th, 2012|

Several of you have have contacted us because you missed us at our first two speaking engagements and didn't get a poster. The good news is we are still here till Friday and have one speaking engagement left. The poster is 23 x 35 inches. That's approximately two feet by three feet. It's a nice size to hang up in your headend or in your office. Come see us our last EXPO presentations on Friday, October 19, 1:00–2:15 pm we will be happy to give you a poster after the presentation. We

8 10, 2012

Capacity Planning | Build It & They Will Fill It

Mia Colabrese2012-10-08T10:01:54-04:00October 8th, 2012|

Capacity Planning - Helps Make Future Capital Expenditure Decisions Capacity Planning in the good old days, was an issue that impacted neighborhoods with web hogs in the them. Peak usage hours were dreaded, teenagers downloading music were seen as a scourge, and web surfers were just plan old annoying. What did these people think the internet was for? How things have changed. Today people not only download music and surf the web but also watch movie content, make video conference calls, teach classes, and do just about anything else they can think of. What

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

14 08, 2012

DOCSIS Security | Uncapping Cable Modems

Mia Colabrese2012-08-14T10:57:21-04:00August 14th, 2012|

So what is uncapping cable modems? Uncapping cable modems refers to activities performed to alter a DOCSIS cable modems settings. Plain and simple someone is messing with the cable modem's configuration file to get what they want. So what do they want? Greater bandwidth (the need for speed), wanting more than one public IP, or any other configurable options a DOCSIS modem can offer. Maybe they just want to prove they can do it and or feel they are getting the shaft from their cable provider. Really the psychology of people is

5 07, 2012

Subscribers get lower data rates than provisioned?

Mia Colabrese2020-06-09T09:36:58-04:00July 5th, 2012|

Why do my DOCSIS subscribers and their Cable Modems get lower speeds than what my DOCSIS config file says they should get? This is a common question that I am asked and it has more than one answer. All too often the RF plant is the first to blame for low DOCSIS cable modem speeds, but in many cases the root cause of the problem can be traced back to the cable modem configuration file and/or the lack of appropriate speed test applications in the headend. Also, some

20 06, 2012

Anga Cable 2012 – Tech Reviews

Mia Colabrese2020-08-06T11:32:53-04:00June 20th, 2012|

Anga Cable 2012 Full of Cool Tech If you missed this years Anga Cable 2012, fear not we attended and interviewed the new, innovative and coolest of the cool technology on the floor. In the coming weeks we will be covering a number of the top pics from the show including some sweet test equipment, hot cable modems, intelligent mapping applications, set tops you'll want in your home, and more. What is Anga Cable? If you are not familiar with Anga Cable, it is the European version of

29 02, 2012

Impact of Impulse Noise on Adaptive Pre-Equalization

Mia Colabrese2021-11-24T09:26:04-05:00February 29th, 2012|

For those of you who have attended my seminars you are familiar with adaptive pre-equalization in cable modems (if not I'll explain it in detail momentarily). Also, if you have done any amount of RF plant troubleshooting you are certainly familiar with Impulse noise (again, I'll cover this too). But if you are like me, I never knew that the two topics were co-related.

15 02, 2012

SCTE Music City Chapter DOCSIS 3.0 Training

Mia Colabrese2012-02-15T12:42:01-05:00February 15th, 2012|

If you have missed our previous DOCSIS 3.0 seminars in the Southeast, make sure to catch this one next week in Nashville! John Downey of Cisco and I will be covering the critical DOCSIS 3.0 bonded downstream and upstream implementation and troubleshooting need-to-know issues.