nanog mailing list archives
Re: Does Internet Speed Vary by Season?
From: Steve Meuse <smeuse () mara org>
Date: Wed, 7 Oct 2009 13:46:15 -0400
joel jaeggli expunged (joelja () bogus com):
ADSL systems will retrain to a lower rate as line conditions (SNR) change for the worse. The attentuation characteristics of a given pair will change of time due to a number of factor, including but not certainly limited to physical wear, moisture invasion, localized source of interference, sunspot activity etc. Are dsl plants subject to localized environmental conditions? Absolutely.
I could be convinced that extremem heat could change a cables velocity factor, but that should only result in slight changes in phase, which I guess would result in a higher BER. Oh, and you forogot about cosmic rays :) -Steve
Current thread:
- Does Internet Speed Vary by Season? Hank Nussbacher (Oct 06)
- Re: Does Internet Speed Vary by Season? Justin Shore (Oct 07)
- Re: Does Internet Speed Vary by Season? Marco Hogewoning (Oct 07)
- Re: Does Internet Speed Vary by Season? Pierfrancesco Caci (Oct 07)
- Re: Does Internet Speed Vary by Season? Patrick W. Gilmore (Oct 07)
- Re: Does Internet Speed Vary by Season? Bret Clark (Oct 07)
- Re: Does Internet Speed Vary by Season? Tim Franklin (Oct 07)
- Re: Does Internet Speed Vary by Season? Scott Howard (Oct 07)
- 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? Patrick W. Gilmore (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)