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Re: DSL line stealing when there is no tone - DANGER - Operational content
From: John Fraizer <nanog () Overkill EnterZone Net>
Date: Thu, 17 May 2001 14:02:29 -0400 (EDT)

On Wed, 16 May 2001, Greg Maxwell wrote:

On Wed, 16 May 2001, Steve Schaefer wrote:

The main reason not to stick a tone on the DSL line is that the line
coding (2B1Q) used by SDSL uses the baseband (low frequency part of the

For line codings that don't use the baseband (CAP, DMT and variants like
G.lite), the DSLAM (telco central office DSL equipment) is always set up
so that the DSL can be combined with a voice circuit over the same pair,
so it still doesn't put a tone on the line.

I predict great profits for the first person to duct tape 100 'tracer
tone-generators' into a 23 inch rack with 48v DC power source. 

The comments and opinions expressed herein are those of the author of this 
message and may not reflect the policies of the Martin County Board of
County Commissioners.

I predict great great headache for the same person.  Typically, the
line-tech is looking for those tones and this will make your lines even
more likely to be fudged with.

John Fraizer
EnterZone, Inc

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