Mia Colabrese, Author at Volpe Firm

30 05, 2013

Brady Volpe Presenting at ANGACOM June 4th – June 6th

Mia Colabrese2013-05-30T10:16:19-04:00May 30th, 2013|

Come See Brady Volpe present at ANGACOM 2013 Topics: You can also see Brady present on - DOCSIS & Testing Best Practice in an All Digital Plant - Tuesday, June 4, 2013, 12.00 to 1.15 p.m. Pre-equalization analysis (PNM) and the benefits this analysis has for cable operators is the topic Brady Volpe will present on at ANGACOM.de in Cologne Germany next week at the - ANGACOM International Breakfast by SCTE , June 5th, 2013. It will include the activity surrounding the CableLabs initiative on PNM. Additionally Brady Volpe will be in Halle 10.2 (upstairs)

28 05, 2013

Pre-equalization analysis PNM presentation at ANGACOM

Mia Colabrese2013-05-28T16:44:58-04:00May 28th, 2013|

Pre-equalization analysis (PNM) and the benefits this analysis has for cable operators is the topic Brady Volpe will present on at ANGACOM.de in Cologne Germany next week at the - ANGACOM International Breakfast by SCTE , June 5th, 2013. It will include the activity surrounding the CableLabs initiative on PNM. You can also see Brady present on - DOCSIS & Testing Best Practice in an All Digital Plant - Tuesday, June 4, 2013, 12.00 to 1.15 p.m. Additionally Brady Volpe will be in Halle 10.2 (upstairs) K19

10 03, 2013

DOCSIS Reed-Solomon Codewords

Mia Colabrese2013-03-10T20:01:38-04:00March 10th, 2013|

How many bytes can a Reed-Solomon codeword bite? In my previous article on DOCSIS Codeword Errors, reader "Sandy" asked how many Reed-Solomon codewords would be required to transport a 1518 byte length of data? This is a very good question and one that I had never considered until I first faced when designing DOCSIS data-layer models in MATLAB. In the example I used in my previous article I chose a word that was 16 bytes long. I did this because it made it easy to draw an 8x8

3 12, 2012

EPON | A Brief Primer

Mia Colabrese2012-12-03T09:00:25-05:00December 3rd, 2012|

EPON Ethernet Passive Optical Network (EPON) is an actual Ethernet network over optical cable following the IEEE 802.3av standard for 1 Gbps (supporting up to 10 Gbps). There are two (2) functional components of an EPON network, an Optical Line Terminator (OLT) and an Optical Network Unit (ONU). The OLT is analogous to a CMTS in a DOCSIS network while the ONU is similar to the cable modem. Data is transmitted to by the OLT to ONUs in the downstream by a broadcast method. Encryption is used, so

26 11, 2012

OpenDNS | Security at the Network Level

Mia Colabrese2012-11-26T13:16:13-05:00November 26th, 2012|

With a lot of adult content and other nefarious sites all over cyber space, it is paramount to protect your family from as appropriate. This can be done by filtering content coming into your computer. There are fundamentally two ways to successfully block adult and other malicious contents from gaining entry into your computer and your home. The first is by installing software designed to block such contents from your PC. The second way can be done at the network level. This later method does not involve the

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

11 10, 2012

Cable Modem Registration, T3 & T4 Timeouts Poster

Mia Colabrese2012-10-11T09:50:04-04:00October 11th, 2012|

Would you like a copy of our Cable Modem Registration with T3 and T4 Timeouts Poster? 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. We have a limited quantity of posters that we will be distributing at the SCTE EXPO. Come see us at one of our three EXPO presentations and we will be happy to give you a poster after the presentation. We will require a business

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

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:

About Mia Colabrese