DSL Problems, Downtime

I take the unusual approach of hosting my Web-site, and therefore also my blog, not on a professional hosting service, which is what most people would do, but on my personal computer at home. What this means is that the visibility of this blog is only as good, as the Internet connection that I have from home. And so, where some subscribers to my ISP may only describe trivial problems with their service, this blog has downtime, due to the slightest problem with my DSL connection.

Well, yesterday, March 8, between 14h00 and 15h00, as well as today, March 9, between 10h00 and 13h05, there were issues with my DSL again, each one a brief issue, during which my blog would not have been visible. I apologize for any inconvenience to my readers.

There has been quite a history of such problems, specifically affecting my blog. The last time a Bell Technician needed to come, he needed to replace circuit-boards that exist in the network node, and which therefore exist on the side of the ISP. But because of both:

  1. The actual lines having been reconnected (earlier), and
  2. This hard, described problem of the circuit boards resulting in their replacement,

This describes repairs to the satisfaction of my ISP, and there was hope that there might be no more connection issues. However, connection issues have returned to my home. Because the two types of problems I listed above won’t normally ‘unfix themselves’, I have to assume that I’m running in to a new type of problem now, which my ISP has not yet diagnosed.

(Update 3/10/2019, 13h40 … )


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DSL Problems, Downtime

I take the unusual approach, of hosting my Web-site and blog on my personal PC at home, instead of on a hosting service. This means that the visibility of my blog is only as good, as my Internet connection at home.

Well sometimes it has been happening to me lately, that I’ve had DSL problems, such as according to this earlier posting. When this happens, my site experiences downtime.

Even though my service has been stable for about a month now, as of 21h00 last night, February 22, this has been happening to me again. I’m going to work with my ISP to try to resolve the issue as before. In the meantime I apologize for any inconvenience to my readers.

(Update:)

As of 12h00, February 23, the connection seems stable for the moment.

Dirk

 

A Possible Vulnerability, in our Above-Ground Telephone Cables

When I was a young teenager, I sometimes spoke to tech professionals, who were working on power-lines and/or telephone cables, the latter of which were strung above-ground from the usual telephone poles. Sometimes, those tech professionals were disposed to answer my curious questions.

What above-ground telephone cables had or have, is refrigeration stations at some of their connection-points, that refrigerate air to “-20⁰C”, which also makes the air very dry, and then to feed that air into the cables in compressed form. The purpose of this exercise is to prevent moisture buildup inside the telephone cables, that have hundreds of wires, if not thousands of wires.

Assuming that such a unit is being used, the question remains unanswered of how it’s supposed to work, if the outside air temperature is below -20⁰C. If the process continues, then air will be fed into the cables at a higher temperature than the ambient temperature, at which point technically, the air being fed in is also moister, than the saturation point of the ambient air. (:1) What could follow, is ice build-up in the cables, and, when the temperature outside rises suddenly, the ice can melt.

I’m not sure what the exact conductivities are, but think that liquid water conducts better than ice, so that liquid water can cause shorting of the telephone wires inside the cables. I suppose that if the ambient air stays warm long enough, continued feeding of cold, dry air into the cables can dry out the cables again…

(Updated 1/20/2019, 7h40 … )

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My Experiences with the Bell Home Hub 3000

My ISP is Bell Canada, and my LAN connects to a service of theirs called ‘Fibe 50′, which stands for a 50 Mbps, DSL connection, to a Local Node, which in turn is connected to Bell via Fibre Optics. And this connection of my LAN is accomplished through a Home Hub 3000 Modem / Router.

The fact that I use my home PC as my Web-server, also means that a stable Internet connection is especially important to me, even though officially, I’m just a Home User. Just recently, my site experienced some down-time, due to problems with my DSL. And I’d like to weigh in on how good or bad the Home Hub 3000 might be, based on personal experiences.

First off, this Modem / Router once had a very bad reputation, when it was first released for public use, in the year 2016. But because that release of the modem preceded my personal range of experiences, I’m going to ignore this piece of History for the moment. It could very well be that in the year 2016 the modem was not ready to be released yet, but that in the year 2019, it is. This would be one example, where the service provider did their best to patch the behaviour of the modem, with many firmware updates, but without any actual modifications to the circuitry being possible.

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