Over the years I’ve come to admire 802.3af standard power-over-Ethernet (aka P.O.E.), even for small- or home-office applications. What follows is an introduction to the topic, and some novel ideas about its use in possibly unexpected applications.
IEEE 802.3af Power-over-Ethernet is the industry standard approach to delivering DC power to network attached devices. Given a P.O.E.-capable switch, or a P.O.E. inserter, DC power is delivered over the same Ethernet connection that provides connectivity. Thus one wire is all that’s required to a distant device on the network.
Continue reading “SOHO Tech: Power-Over-Ethernet is Awesome!”
According to a FierceTelecom article by Sean Buckley, “Verizon says fewer customers are purchasing battery backup for fiber home voice services.” The article describes how Verizon’s FiOS FTTH customers are tending to rely upon their mobile phones to stay on touch during a power outage.
This assertion comes right as the FCC is concerned about CPE remaining powered during an outage, something that cannot be done over fiber as it was over copper. Since customers were not buying traditional battery backup units Verizon has come up with its own solution called PowerReserve.
Continue reading “Revisiting The Merits Of Battery Backup”
An email from Daniel Berninger recently pointed out that Thursday, April 30th 2015 is the 20th anniversary of Internet Independence. According to Dan;
The decommissioning of the NSFNET backbone on April 30, 1995 was the final step in the process of privatizing the Internet set in motion by the High Performance Computing Act of 1991.
This event is being marked by a reception at the Center for Strategic and International Studies in Washington DC. Dan further offers;
The speakers address the 20 year accomplishment horizon and 20 year opportunity horizon to 2035.
- James Lewis, Director, Strategic Technologies Program, CSIS
- David Allison, Associate Director, Smithsonian Museum of American History
- Karen Rose, Sr Director Strategy & Research, Internet Society
- Gary Shapiro, CEO, CEA – Innovation Movement
- Reed Hundt, former FCC Chairman & author In China’s Shadow, The Crisis of American Entrepreneurship
- Ira Magaziner, former Sr Advisor Policy Development, President Clinton -> Creating the Framework for Global E-Commerce in 1997
The formal program will take about 45 – 60 minutes and lead into an informal agenda with tech elders and others sharing
anecdotes/remembrances of the Internet journey and ideas going forward.
Link for Internet Society livestream – http://livestream.com/internetsociety/InternetIndependenceDay
The tech elders convened as a group of friends to work on a roadmap for the gigabit age continues to grow (see below).
Tech elders so far:
- John Perry Barlow, lyricist and activist
- Mark Cuban, founder, AXS TV
- Tim Draper, founder, Draper Fisher Jurvetson
- Tom Evslin, founder & former, CEO ITXC
- Dave Farber, Professor Emeritus, CMU and Board Member ISOC
- Charlie Giancarlo, Sr Advisor, Silver Lake
- George Gilder, author
- John Gilmore, activist
- Brett Glass, founder of first Wireless ISP
- Doug Humphrey, co-founder Digex, Cidera
- Bryan Martin, Chairman and CTO, 8×8
- Joe McMillen, founder, Complex Drive
- Scott McNealy, co-founder, SUN Microsystems
- Bob Metcalfe, Professor, University of Texas and inventor of Ethernet
- Ray Ozzie, founder, Talko and Lotus Notes
- Jeff Pulver, co-founder, Zula and Vonage
- Michael Robertson, founder, CEO, MP3.com
- Les Vadasz, former EVP, Intel
It’s most likely that you, like myself, can’t just fly to DC for such events, no matter how interesting the gathering. However, the fact that this event is being streamed by the Internet Society makes it considerably more accessible. Thus it’s an invitation well worth sharing.
This morning’s email included a message from Manuel Kasper, leader of the m0n0wall project. On the very day that is the 12th anniversary of the project he has announced that he’s bringing it to an end.
I’ve used m0n0wall for at least a decade. For several years I’ve intended to migrate to pfsense, a project that was initially forked from m0n0wall. m0n0wall’s NAT implementation is just so very SIP friendly that making the change always felt like a lot of effort. I suppose now there’s an additional reason to follow through on that plan.
Manuel didn’t elaborate on his reasons, but I certainly understand the possibilities. Twelve years is along time to do anything, most especially anything that involves leading a community project.
m0n0wall has been a treat to use. It’s positively inspirational in it’s combination of carefully defined functionality and simplicity. Manuel was masterful in his ability to sustain the project focus, avoiding the mistake of trying to be all things to all people.
We have a pair of uninterruptible power supplies (UPS) on the property. Both are somewhat vintage models from Belkin. A 1000 VA model (F6C1000) in my office rack powers our network core. A smaller, 900 VA model (F6C900) in a central closet, powers those network components that live in the house. Both of them have been misbehaved in recent weeks. At this very moment they are basically non-functional.
I’ve long believed that the network core should survive minor power line irregularities. This belief stemmed in part from our migration to IP-based telephones for home & office. Our phone service should survive a power line bump. With both UPS in their fault-riddled state a loss of line power, even just a power line switching bump, caused our entire network to go down. This situation eventually had to be addressed.
The sealed batteries is consumer UPS such as ours have a fixed lifespan. At a certain point they simply cannot retain a charge, and the device throws an error. From that point onward they become nothing more than an overweight outlet strip.
Continue reading “Our Two UPS Have Gone Down”
Today’s news dump included an article on GatesAir, now a freestanding entity, it was once the transmission division of what was then known as Harris Broadcast. The company makes radio and TV transmitters, as well as related equipment, which includes studio-to-transmitter (aka STL) links. According to the Broadcast Beat article they have sold and installed one of their Intraplex IP STLs to WRLY-LP, a low power radio station in Raleigh, NC.
A broadcaster with a transmitter that is not located right at their main building (not co-sited) needs an extremely reliable means of sending their broadcast signal from the studio to the transmitter location. They also need some way to get some transmitter telemetry back from the remote location so that they can monitor the health of the transmitter. Their on-air presence via the transmitter is, after all, their bread and butter.
Continue reading “Opus Codec Appears in Broadcast STL System”