Interesting People mailing list archives
Re: Two positions at FCC Comcast Hearing
From: David Farber <dave () farber net>
Date: Wed, 27 Feb 2008 07:17:59 -0800
________________________________________ From: Craig Partridge [craig () aland bbn com] Sent: Wednesday, February 27, 2008 9:57 AM To: David Farber; Brad Templeton Subject: Re: [IP] Two positions at FCC Comcast Hearing
What is often missed is the question really comes out of this concept of the user having spare upstream bandwidth. Most ISPs sell a flat rate, upstream package and as such the bandwidth is sold to the customer and is theirs to use to further their usage of the internet. In the case of DSL, the upstream is truly otherwise unused and is lost forever if not used. With DOCSIS and wireless ISPs this is not as true.
Historically it isn't true for DSL either (though perhaps DSLAMs have changed since I last looked at them closely). Briefly your DSL link goes to a DSLAM (usually close to where your local loop terminates) and the DSLAM then has a link to a router somewhere farther upstream. The per user guaranteed bandwidth between DSLAM and router is FAR less (often 1/10th) of the supposed upstream DSL bandwidth. Craig ------------------------------------------- Archives: http://www.listbox.com/member/archive/247/=now RSS Feed: http://www.listbox.com/member/archive/rss/247/ Powered by Listbox: http://www.listbox.com
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- Re: Two positions at FCC Comcast Hearing David Farber (Feb 27)