Re: Think outside the GUI challenge #1
- From: "Jim Harrison" <Jim@xxxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Thu, 29 Dec 2005 14:36:41 -0800
Gimme a break; I already gave you the stipulation that modem & bridge
are not related except as the manufacturers have combined the two in a
single unit.
If you mean "DSL and "Hayse-clones" both apply A/D and D/A techniques to
transmit digital data over an analog medium", then the answer is an
unqualified "yes". If you mean "they use exactly the same technology
and techniques", then I'm sorry to say that you need to get a
TSu-ectomy.
If that means "you win", then you can have that victory; he who is
sometimes called "Tim".
--------------------------------------------
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://isaserver.org/Jim_Harrison/
http://isatools.org
Read the help / books / articles!
--------------------------------------------
-----Original Message-----
From: Thor (Hammer of God) [mailto:thor@xxxxxxxxxxxxxxx]
Sent: Thursday, December 29, 2005 2:19 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] Re: Think outside the GUI challenge #1
http://www.ISAserver.org
Put a rest too? Not remotely!! The first paragraph states:
"Compared to the traditional voiceband modem, DSL technology uses much
wider bandwidth." It is a Sept 2001 article - show me something
pre-1963.
Anything!
It's "traditional" because that's what the original one was. You got
nuttin!! And nobody ever disputed "modulation." The term is "modem."
So to REALLY put a rest to this, how about answer my original question:
"Are you saying that a DSL Ethernet Bridge connects to the PSTN network
and
transmits data via the PSTN the same way that a Hayes modem does?"
If you say "no," which is the right answer, I win. If you say "yes,"
then
you are delusional, and I win.
Whadda ya say, Pops?
I'm calling for a community vote!
T
-----
"I may disapprove of what you say,
but I will defend to the death your
right to say it."
----- Original Message -----
From: "Jim Harrison" <Jim@xxxxxxxxxxxx>
To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
Sent: Thursday, December 29, 2005 12:57 PM
Subject: [isalist] Re: Think outside the GUI challenge #1
http://www.ISAserver.org
C'mon - everyone knows about the rift between you and your
grandbrother...
:-p
Regarding the conversion from digital to analog signaling with DSL,
here's
one reference for you:
http://www.ieee-cicc.org/2000/conference/edsessions/session3.html
Granted; there's no down-and-dirty detail here, but it's quite clear
that
even the IEEE believes that DSL signals over PSTN require the use of A/D
and
D/A conversion.
Also, here's a book that can bring all this to closure:
http://www.comsoc.org/ci1/Public/2001/Sep/cibrev.html
http://www.amazon.com/gp/product/0471290998/qid=1135889532/sr=11-1/ref=s
r_11_1/002-9978780-2108045?n=283155
Note the generous use of the term "modulation" in the review alone.
Case rested...
Regarding "modem" etymology, any basic electronics tome that discusses
anything beyond DC/AC theory should be able to help there.
They're a bit difficult to transmit over email (as you might guess).
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