nanog mailing list archives
Re: Does Internet Speed Vary by Season?
From: Scott Morris <swm () emanon com>
Date: Wed, 07 Oct 2009 14:22:31 -0400
I may be having my wires a little crossed (I'm not an electrical engineer) but I was always under the impression that manipulation of the physical characteristics like that from heat/dampness didn't reduce the "speed" but the "quality" (like line noise/errors/etc) of the line. Whether old telco lines or newer data lines it's all about electrical signal and bit error rates. More errors = more retransmissions = slower perceived throughput. Just my thinking. Scott Joe Greco wrote:
http://www.wired.com/gadgets/miscellaneous/magazine/17-10/ts_burningquestionIt used to be that we would notice this, except that it had everything to do with temperature *and* dampness. In the '90's, it was still quite common for a lot of older outside plant to be really only "voice grade" and it wasn't unusual for copper to run all the way back to the CO, through a variety of taps and splice points. Even though Ma Bell would typically do a careful job handling their copper, the sheer number of potential points of failure meant that it wasn't unusual for water to infiltrate and penetrate. If I recall correctly, the worst was usually a long, hard cold rain (hey we're in Wisconsin) after which people who had been getting solidly high speed modem connects would see a somewhat slower speed. ... JG
Current thread:
- Re: Does Internet Speed Vary by Season?, (continued)
- Re: Does Internet Speed Vary by Season? Patrick W. Gilmore (Oct 07)
- Re: Does Internet Speed Vary by Season? joel jaeggli (Oct 07)
- Re: Does Internet Speed Vary by Season? Steve Meuse (Oct 07)
- Re: Does Internet Speed Vary by Season? Joe Greco (Oct 07)
- RE: Does Internet Speed Vary by Season? Jonathan Brashear (Oct 07)
- Re: Does Internet Speed Vary by Season? Bryan Campbell (Oct 07)
- Re: Does Internet Speed Vary by Season? Adrian Chadd (Oct 07)
- Re: Does Internet Speed Vary by Season? Matthew Black (Oct 07)
- Re: Does Internet Speed Vary by Season? Joe Greco (Oct 07)
- Re: Does Internet Speed Vary by Season? Jerry Pasker (Oct 07)
- Re: Does Internet Speed Vary by Season? Joe Greco (Oct 07)
- Re: Does Internet Speed Vary by Season? Dragos Ruiu (Oct 09)
- RE: Does Internet Speed Vary by Season? Dave Larter (Oct 09)
- Re: Does Internet Speed Vary by Season? Fred Baker (Oct 10)
- Re: Does Internet Speed Vary by Season? Adrian Chadd (Oct 10)
- RE: Does Internet Speed Vary by Season? Lorell Hathcock (Oct 10)
- Re: Does Internet Speed Vary by Season? Dragos Ruiu (Oct 11)
- Re: Does Internet Speed Vary by Season? deleskie (Oct 10)