Author name: Andrew Walding

Andrew Walding is the founder and president of CellStream, Inc., bringing more than 30 years of experience in telecommunications, broadband networking, Internet technologies, and technical education. His expertise spans network engineering, wireless and wireline communications, packet analysis, network operations, emerging technologies, and the design and delivery of advanced technical training programs. A Cisco-certified professional, IPv6-certified specialist, and CBRS Certified Professional Installer (CPI), he helps organizations and technology professionals understand, deploy, troubleshoot, and optimize modern communications networks.

CSI-HO-009 – Ethernet 101

Post Views: 12,725  1-Day Instructor-Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 10 Students – Maximum 20 Students Course Description Ethernet is the foundation of nearly every modern local area network. Whether supporting enterprise networks, broadband services, data centers, or service-provider infrastructure, networking professionals need a solid understanding of how Ethernet devices

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Speaking at the Wisconsin State Telephone Association

Post Views: 1,192 Monday, May 25th, 2009 As many of the CellStream faithful know, we are hugely dedicated to the Independent Telephone market, and have been since the founding of the company in 1998. We were recently invited and happily accepted an opportunity to speak at the Wisconsin State Telephone Association conference. A short video

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Cloud Computing and Virtualization – A Missing Link

Post Views: 1,962 This article was originally published Monday, March 23, 2009. I have been messing rather seriously with virtualization recently. Specifically Microsoft Virtual PC and Microsoft Virtual Server products, as well as SUN’s Virtual Box. The good news is they all work pretty much as advertised, albeit they have differences. I now have a

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Can I erase my accounts on Facebook, Twitter, etc.?

Post Views: 1,439 Two answers to this one: sort of, and absolutely. Sort of means you can go to these sites and select to deactivate your account.  The problem is that while it is deactivated, all your information, history, friends lists, postings, tweets, etc. are all maintained.  You can reactivate almost any time you want.

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High Tech corporate dependencies – explained

Post Views: 1,533 Since we all work in high tech … Does the statement, “We’ve always done it that way” ring any bells…? The US standard railroad gauge (distance between the rails) is 4 feet, 8.5 inches. That’s an exceedingly odd number.Why was that gauge used?Because that’s the way they built them in England, and

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Turning Old Computers into Tools for Subscribers

Post Views: 1,156 This article is directed at my many Independent Telephone/Rural Local Exchange company friends.  It is the details behind a story I often talk about at conferences and training sessions. One of the main challenges for the RLECs is to up the “take-rate” of broadband in their served area.  There are a number

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Don’t Drink From Hotel Glasses!

Post Views: 1,778 If you think they are safe and clean just for you, you need to read this news report: https://abcnews.go.com/GMA/BusinessTravel/story?id=4277067 Comments are welcomed below from registered users.  You can also leave comments at our Discord server.  If you would like to see more content and articles like this, please support us by clicking

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Our First Experiences with Windows SharePoint 2007

Post Views: 1,951 As those of you close to us know, we have been big fans of Microsoft’s SharePoint concept since initial release several years ago.  We have, in fact, recommended it to every small/medium business owner that will listen to us!  The entire CellStream back office became converted to this online database system.  Was

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CSI-HO-016-C – Hands-On Ethernet and IPv6 – 2 Day

Post Views: 22,948 Building Practical Layer 2 Ethernet and IPv6 Networking Skills 2-Day Instructor-Led Hands-On Lab Course Available in Web-Based or On-Site delivery. Minimum 10 students – Maximum 16 students Course Description Modern IP networking depends on two fundamental technologies: Ethernet at Layer 2 and Internet Protocol at Layer 3. This two-day hands-on course combines

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CSI-HO-008 – Layer 3 IPv4 Routing 101

Post Views: 23,931 Practical IPv4 Routing, RIPv2, OSPF, BGP4, Route Redistribution, and Troubleshooting 1-Day Instructor-Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 10 students – Maximum 20 students Course Description IPv4 addressing defines networks. Routing connects them. Once devices have been assigned IPv4 addresses and subnet masks, the next essential networking skill

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