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The Devil's Doorknob BBS Capture (1996-2003)
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devilsdoorknobbbscapture1996-2003.iso
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SYSOP
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TL110.ZIP
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SAMPLES.DOC
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Text File
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1994-02-27
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2KB
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48 lines
Print out this file. Then, to view these files in order, type
TONEMAP @SAMPLES
Use Ctrl-PgUp and Ctrl-PgDn to move backwards and forwards through the
files.
--------------------------------------------------------------------------------
Sample 1: A generic residential exchange. Few carriers. Note the faint
pattern from 6900-7400.
Sample 2: A split exchange. 0-4000 is residential, business from
4000-9999.
Sample 3: A double exposure, this is a merge of a tone and carrier
scan. A dozen odd PBX's are sandwiched between residential
or mixed use. Note the tones and carriers at the bottom of
the PBX DID ranges.
Sample 4: Another mixed exchange, this time with wider bands. The
voice ranges are unworking numbers. The busy bands are
unused numbers in commercial DID groups.
Sample 5: This is much like sample 4, but with a more typical blurring
of boundaries between bands.
Sample 6 & 7: More mixed exchanges, with even less distinction between
bands. Here hunt and DID groups do not fill even bands of
100. This one comes from a large city where phone numbers
are at a premium.
Sample 8a & 8b: This is the same exchange scanned twice, first for tones,
then for carriers. They look very different. Can someone
explain the "grid" pattern in the carrier scan 8000-9999?
Sample 9: Tone scanning doesn't always work well, even with the right
kind of modem. Any real tones are here obscured by false
responses.
Sample 10: Here's an exchange with many carriers. This is what carrier
logging is for.
Sample 11: An exchange with many carriers in one band.
Sample 12: Notice how this exchange fades off towards the bottom in
places. We've seen this a lot; perhaps low numbers are
allocated first?