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Date: Tue, 23 Oct 2007 10:26:33 -0400
From: "Lewis G Rosenthal" <os2-wireless_users@2rosenthals.com>
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Subject: Re: [OS2Wireless] DSL Routers

On 10/22/07 05:02 pm, Will Honea thus wrote :
> I hate to post something close to on-topic, 
;-)
> but an article on TheRegister.com
> today (http://www.theregister.com/2007/10/22/zen_ar7_infineon_bt_fault/) caught
> my eye since the links in the article listed the router I use (Actiontec
> GT701-WG)  happened to be in the list of affected devices.
>
> One major British ISP is linking frequent ADSL dropouts to the particular
> chipset used in the DSL modem section of the router.  Linksys and Netgear are
> also in the list, so this may affect a bunch of folks.  The gist of the article
> and the related links is that this chip set is especially sensitive to
> connections where the SNR changes frequently and manifests itself with frequent
> dropouts and re-trains.  I have intermittent problems with that here, so I'd be
> interested in what others may be seeing.
>
> In my case, I'm fairly far from the CO (about 2000 meters) and the wiring in
> this area was laid underground in 1970-71, so this is not an ideal setup to
> begin with.  I see near end SNRs of 2-18 on a fixed 1.5mb line.  I will see a
> continuous connection for maybe a week, then go through maybe 3-4 days of
> frequent drops and reconnects with a few hours on each linkup.  The system
> seems to cycle through various servers before settling on one that lasts for a
> week or two. Funny part is, the stable connection is generally to a server with
> a lower initial SNR than seen on the other servers but it endures where the
> better quality signal will vary by as much as +-50% over the course of a day
> and is almost certain to drop out within 24 hours.
>
> Anyone else seeing something like this? Any thoughts on improving the stability?
>
>   
This is interesting news, indeed, and I'm sure you'll recall our 
discussion here of the DSL issues at my New York location, Will. In my 
case, however, I am using older Westell Wirespeed bridges on both of my 
lines, which predate the release of the AR7, IFAIK.

-- 
Lewis
------------------------------------------------------------
Lewis G Rosenthal, CNA, CLP, CLE
Rosenthal & Rosenthal, LLC
Accountants / Network Consultants
  New York / Northern Virginia           www.2rosenthals.com
eComStation Consultants                  www.ecomstation.com
Novell Users Int'l       www.novell.com/openenterpriseserver
Need a managed Wi-Fi hotspot?               www.hautspot.com
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