Access Providers

Demystifying ISP Oversubscription

I think the concept that I have to explain the most as a consultant is oversubscription, which is how ISPs share bandwidth between customers in a network. Most broadband technologies distribute bandwidth to customers in nodes. ISPs using passive optical networks, cable DOCSIS systems, fixed wireless technology, and DSL all distribute bandwidth to a neighborhood device of some sort that then distributes the bandwidth to all of the customers in that neighborhood node.

Supporting SpaceX Starlink in Remote Communities

Five companies are developing low-Earth orbit (LEO) broadband satellite constellations, but, as of now, only SpaceX is planning to market directly to consumers. What sorts of support will they require? A pilot study of Starlink connectivity in remote Chilean communities may provide some answers to that question. The Chilean regulator, SUBTEL, has authorized a year-long pilot study of Starlink connectivity in remote, rural communities and is committed to supporting them during the year.

A Chance to Tackle the Urban Digital Divide

For the first time in my career, we face the possibility of some big changes for broadband in low-income neighborhoods in cities. The recent American Rescue Plan Act (ARPA) gave cities significant funding that can be used for various kinds of infrastructure, including broadband. Cities have been handed a once-in-a-lifetime chance to fix some of the broadband deserts that have grown in poor neighborhoods. I'm already working with several cities that are taking this opportunity seriously.

Starlink Beta vs. Fiber

Last year we had terrible DSL from Consolidated Communications and much better, although not always consistent, service from wireless ISP GlobalNet. I signed up for fiber service from Stowe Cable for installation this year and also was accepted early as a Beta tester for Starlink. Now we have both Starlink and fiber and can compare the two. I was very happy to cancel my Consolidated service but felt bad about canceling GlobalNet, which was essential to me for many years. Most of the time, there are only two of us in the house.

The Long-Run Effect of Cuba’s Recent Internet-Augmented Protests

It’s now more than 6 weeks since the Cuban political protests and accompanying Internet service disruption. Will they lead to a long-run change in the Cuban Internet or the Cuban political situation? Let’s start with the Cuban Internet. Many of the Internet changes during the protests have disappeared. Total daily traffic, the ratios of mobile to fixed traffic, and human to automated posts, and the proportion of blocked Signal sessions are about what they were before the protests.

High-Speed Fiber Overtakes DSL as OECD Countries Add 21 Million Fixed Broadband Connections in the Pandemic Year

High-speed fiber Internet subscriptions surpassed copper-wire DSL connections across OECD countries for the first time in 2020 as the need to move work and home life activities online during the COVID-19 pandemic led to a record 21.15 million new fixed broadband connections (including fiber, DSL, cable, and others) in the year to end-December 2020.

Are We Ready for Big Bandwidth Applications?

There is a recent industry phenomenon that could have major impacts on ISP networks in the relatively near future. There has been an explosion of households that subscribe to gigabit data plans. At the end of 2018, only 1.8% of US homes subscribed to a gigabit plan. This grew to 2.8% by the end of 2019. With the pandemic, millions of homes upgraded to gigabit plans in an attempt to find a service that would support working from home.

The Test of Time at Internet Scale: Verisign’s Danny McPherson Recognized with ACM SIGCOMM Award

The global internet, from the perspective of its billions of users, has often been envisioned as a cloud -- a shapeless structure that connects users to applications and to one another, with the internal details left up to the infrastructure operators inside. From the perspective of the infrastructure operators, however, the global internet is a network of networks. It's a complex set of connections among network operators, application platforms, content providers and other parties.

Holding Times – A Phenomenon Happening With ISP Networks That No One Seems to Talk About

During the last year, we saw a big change in the nature of our broadband usage in that many of us are connecting to remote work or school servers, or we are connecting to long Zoom calls. We already can see that these changes have accelerated the average home usage of broadband. OpenSignal reports that the average broadband usage per home grew from 274 gigabytes per month just before the pandemic up to 462 gigabytes per month measured at the end of the first quarter of this year.

How Will Rural Chileans Use SpaceX Starlink?

The Chilean Undersecretary of Telecommunications (SUBTEL) has begun a year-long pilot study of SpaceX's Starlink satellite Internet service. I don't know how many test locations they are planning, but the first two have been selected. Last week I discussed the first, the John F. Kennedy school in Sotomó, an isolated town at 41.6° South on a fjord in Chile's Lake Region, and the second will be in Caleta Sierra on the coast about 1,200 miles north of Sotomó. SpaceX is also considering a European pilot study in Georgia and perhaps (hopefully) others.