Re: [TSCM-L] {5206} Secret Phone Line Demarcation Worksheet

From: Sampo Syreeni <de..._at_iki.fi>
Date: Wed, 5 Jan 2011 00:55:37 +0200 (EET)

> This is one on the forms that I use to document the configuration of
> the telephone lines as they appear at a 6-line demarcation block that
> you typically see at the side of a residence.
>
> The form is a good place to start a phone line analysis.

Saved. For no good reason at all, I might add.

>From my theoretical starting point, it should be pretty simple and
straight forward to take a copper bundle apart, inject a couple of
tightly wound inductive probes any which way, and then sort out the
connections using pure digital signal processing. Injecting a little bit
of noise into the probes and measuring the MIMO response on the others,
you should be able to accurately calculate the cross-section of both the
probes and the wires, modulo a circular permutation or so.

Do you happen to know if anybody produces hardware which does this
automatically as of now?
-- 
Sampo Syreeni, aka decoy - de..._at_iki.fi, http://decoy.iki.fi/front
+358-50-5756111, 025E D175 ABE5 027C 9494 EEB0 E090 8BA9 0509 85C2
Received on Sat Mar 02 2024 - 00:57:24 CST

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