> No, I did not read the article . . . But, . . . > > Yes, DSL speed varies by season . . . or rather, temperature. > > But, this is really only the case for _aerial_copper_plant. Buried > plant is nearly the same temperature year round.
Yes, but it is more susceptible to long-term water infiltration, which leads to longer-term speed drops. This is actually more difficult to work with and test for. > Copper pair resistance changes with temperature. And, therefore, the > link speed of DSL will change depending upon the time of the year > (temperature) and geographic location. > > If there is a difference of but a few degrees of temperature year round, > then no there will be no difference. But, if you live in the desert > southwest or even the mid-west where the temperatures can be 70-120 > degrees different between seasons or even 40-70 degrees different > between night and day . . . you are going to have pronounced differences > in link speed. You might. Or you might not. Around here, it's not unusual to see a difference of a hundred degrees between summer and winter. Speaking from a few decades of experience working with telecom up here, I'd be tempted to say that either a circuit tends towards being problematic or towards being reliable, and that where I've been able to ascertain enough facts, there's a correlation with the age of the outdoor plant- but that's only a loose correlation. > Worst cast, your link speed might vary 10-20%. The longer the cable > length from the central office, the more the variance will be. But, > this is something that must be measured on a case by case basis. And, > since much of the aerial plant has been replaced with buried plant, this > really isn't much of a problem anymore. Buried plant mostly has more consistent (maybe less severe) problems, IMHO. ... JG -- Joe Greco - sol.net Network Services - Milwaukee, WI - http://www.sol.net "We call it the 'one bite at the apple' rule. Give me one chance [and] then I won't contact you again." - Direct Marketing Ass'n position on e-mail spam(CNN) With 24 million small businesses in the US alone, that's way too many apples.
