While preparing a technology and strategy briefing for senior management late last week, I needed to check my facts on some of the intricacies of DOCSIS 3.1 as compared to FTTH and previous DOCSIS standards such as DOCSIS 3.0. In cases like this, I find it helpful to have a source to cite in the event additional questions arise. After searching for awhile, I came across an excellent primer on each of the DOCSIS standards and the spectral parameters of each. This should come in handy to anyone working in a technical marketing engineering or business development capacity in the cable industry. Thank you to the SCTE San Diego Chapter for making this available!