Managing free pairs to prevent DSL sync. loss

valdis.kletnieks at valdis.kletnieks at
Tue Jul 17 15:38:20 UTC 2012

On Tue, 17 Jul 2012 10:16:17 -0500, "John Souvestre" said:
> 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?

No, it will be strictly a DC current, with the amperage easily calculated from
the voltage difference between the two ends and the resistance of however many
cable-feet of wire is involved.  Not usually a big deal, unless your
termination design didn't include the ability to sink a DC current 24/7.

(Of course, actually measuring the voltage and resistance may be non-trivial :)
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