[154952] in North American Network Operators' Group
RE: Managing free pairs to prevent DSL sync. loss
daemon@ATHENA.MIT.EDU (John Souvestre)
Tue Jul 17 11:16:53 2012
From: "John Souvestre" <johns@sstar.com>
To: "'NANOG Mailing List'" <nanog@nanog.org>
In-Reply-To: <4288131ED5E3024C9CD4782CECCAD2C716AD0D9C@LMC-MAIL2.exempla.org>
Date: Tue, 17 Jul 2012 10:16:17 -0500
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Yes, but would this result in more or less noise than an open end acting
like an antenna? And would the ground loop noise be in the DSL =
spectrum?
John
=A0=A0=A0 John Souvestre - New Orleans LA - (504) 454-0899
-----Original Message-----
From: Matlock, Kenneth L [mailto:MatlockK@exempla.org]=20
Sent: Tuesday, July 17, 2012 10:14 am
To: valdis.kletnieks@vt.edu; John Souvestre
Cc: NANOG Mailing List
Subject: RE: Managing free pairs to prevent DSL sync. loss
Yeah, grounding both ends will result in some current traversing across =
the
pairs all the time because of differences in ground potential over =
long-ish
distances.
Ken Matlock
Network Analyst
303-467-4671
matlockk@exempla.org
-----Original Message-----
From: valdis.kletnieks@vt.edu [mailto:valdis.kletnieks@vt.edu]
Sent: Tuesday, July 17, 2012 9:00 AM
To: John Souvestre
Cc: 'NANOG Mailing List'
Subject: Re: Managing free pairs to prevent DSL sync. loss
On Tue, 17 Jul 2012 09:15:59 -0500, "John Souvestre" said:
> Have you considered grounding one end (or both) of the free pairs? =20
> Perhaps this would reduce the amount of noise they pick up.
Grounding both ends will probably result in "hilarity ensues". And I
suspect that Anurag can't ground the free pairs, because the copper =
belongs
to the provider.
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