**
I always thought anti-aliased fonts would travel faster, as they are smoooother. Never considered how well such typefaces would handle major kinks in the cable though, its something to ponder. I'll ask our networking guys about it tomorrow.

Dave


On 23/02/06, Rick Cook wrote:

Well, that depends on the font used - if you remove the serifs from the
ones, they travel so fast that you can actually get a zero latency
issue, because the rounder zeros can't keep up. I found that if I bold
the ones and use a serif font (or just use lower case "L"), the speed
balances out better between ones and zeros. That's why a kinked cable
is bad, because if it breaks there, the bits start leaking onto the
floor...what a mess that is.

Rick

-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto: arslist@ARSLIST.ORG ] On Behalf Of Dave Saville
Sent: Thursday, February 23, 2006 6:19 AM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires

On Thu, 23 Feb 2006 08:47:51 -0500, Dan Caissie wrote:

>If you ever seen a wiring closet it would scare you most times in most
>places.
>
>Do you know if you twist the network wires the data gets corrupted ;)

Only if there are an odd number of twists. The real problem is that the
ones slide round the bends faster than the zeros - 'cos ones are thinner
and therefore have less resistance getting through the constriction.

--
Regards

Dave Saville



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20060125This posting was submitted with HTML in it

I was waiting for that:

http://www.dilbert.com/comics/dilbert/archive/dilbert-20060222.html

Thad




"McKenzie,
James J C-E
LCMC To
HQISEC/L3" arslist@ARSLIST.ORG
e@HQISEC.ARMY.
MIL> Subject
Sent by: Re: kinked wires
"Action
Request System
discussion
list(ARSList)"
ST.ORG>


02/23/2006
08:14 AM


Please respond
to
arslist@ARSLIS
T.ORG
|------------|
| [ ] Secure |
| E-mail |
|------------|





**


Dibert alert!


James McKenzie





-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:arslist@ARSLIST.ORG]On Behalf Of Dave Saville
Sent: Thursday, February 23, 2006 7:19 AM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires





On Thu, 23 Feb 2006 08:47:51 -0500, Dan Caissie wrote:


>If you ever seen a wiring closet it would scare you most times in most
>places.
>
>Do you know if you twist the network wires the data gets corrupted ;)


Only if there are an odd number of twists. The real problem is that the
ones
slide round the bends faster than the zeros - 'cos ones are thinner and
therefore have less resistance getting through the constriction.


--
Regards


Dave Saville




UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org


20060125This posting was submitted with HTML in
it




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** cat 6 cables have specific requirements as to how tightly they can be coiled, etc, so kinks in the wires would definitely degrade performance. however these cables are used for > gigabit ethernet so it probably wouldn't be what this person was talking about

Chris Doble wrote:

**
Hey folks,

Just a bit curious about something I heard.

A company IT department Director told a VP that the reason some folks pc’s were slower than others is that when the installation of the network cables was performed, some of the cables were “kinked”. And therefore those people would naturally get slower response times….. blah, blah, blah.

I’d like to find out if anybody out there has experienced this phenomenon.

Thank You,

Chris Doble
Mobile: 949-533-5346
Email: cdoble@aisconsulting.net
Advanced Integrated Solutions Inc.
http://www.aisconsulting.net



20060125This posting was submitted with HTML in it





What are the most popular cars? Find out at Yahoo! Autos 20060125This posting was submitted with HTML in it

This thread reserves a special place in the ARSList Drinking Game. Take 5.

Axton Grams

On 2/23/06, Warren Baltimore wrote:
> OK! I have to agree with Shafqat. This thread is a classic and
> should be recorded for posterity!
>
> I for one would like to make a nomination for best thread for the up
> coming RUG (or whatever we're calling it now). I don't think we have
> to look any farther!
>
> Who's with me?
>
> Dan? Comments?
>
> On 2/23/06, CJT. wrote:
> > Some info off the web re: CAT 5 cable,
> >
> >
> > URL http://www.danpex.com/faqs/cat5-inst.htm
> >
> > Extract (DANPEX Corp.):
> >
> > Anything that kinks the cable or disturbs the precise alignment of the wire
> > pairs inside the cable has the potential to create future performance
> > problems.
> >
> >
> > URL
> > http://www.elec-toolbox.com/communications/classifications/cat5/install.htm
> >
> > Extract (Electricians Toolbox):
> >
> > Cat 5 cable requires careful and precise installation to maximize efficiency
> > and system performance. Anything that kinks the cable or disturbs the
> > precise alignment of the wire pairs inside the cable has the potential to
> > create future performance problems.
> >
> >
> > URL http://www.delmar.edu/Courses/ITNW1325/sem1/notes/lessons36-39.html
> >
> > Extract (mpharris@surf.delmar.edu):
> >
> > Never secure the cable ties too tightly and try to minimize the amount of
> > jacket twisting. Never allow the cable to be pinched or kinked. If this
> > occurs, data will move more slowly and your local area network will operate
> > at less than optimal capacity. If you exceed 25 pounds of pull, wires inside
> > the cable can untwist. If wire pairs become untwisted, this can lead to
> > interference and crosstalk.).
> >
> >
> > URL
> > http://72.14.207.104/search?q=cache:xnQfC3To9MEJ:www.sonicmario.com/cisco/Se
> > mester%25201/S1Ch09review.htm+CISCO+kinked+rj45+cable&hl=en&gl=au&ct=clnk&cd
> > =10
> >
> > Extract:
> >
> > Never allow cables to be pinched or kinked. If this occurs, data throughput
> > will be reduced, and the LAN will operate at less than optimal capacity.
> >
> >
> > URL
> > http://www.commsdesign.com/designcorner/showArticle.jhtml?articleID=1650546
> > 5
> >
> > Extract (Jason Knickerbocker, Marvell):
> >
> > Cat5 cable requires careful and precise installation to maximize efficiency
> > and system performance. Anything that kinks the cable or disturbs the
> > precise alignment of the pairs inside the cable has the potential to create
> > future performance problems.
> >
> >
> > URL http://www.derose.net/steve/guides/wiring
> >
> > Extract (Steve DeRose,):
> >
> > Never bend CAT5 or higher wire tightly around a corner; make sure it bends
> > gradually, so that a whole circle would be at least 2" across.
> >
> >
> >
> >
> >
> >
> > -----Original Message-----
> > From: Action Request System discussion list(ARSList)
> > [mailto:arslist@ARSLIST.ORG] On Behalf Of Dave Saville
> > Sent: Thursday, 23 February 2006 9:52 PM
> > To: arslist@ARSLIST.ORG
> > Subject: Re: kinked wires
> >
> > On Wed, 22 Feb 2006 20:56:46 -0800, Rick Cook wrote:
> >
> > >If the wires were bent to the point where they were marginally broken, it
> > might cause intermittent failures, but I can't see it just causing slowness.
> > Network cables aren't like garden hoses that can have flow controlled. I
> > say that electrons either travel, or they don't.
> >
> > I agree with Rick *if* the cable is cat5. But if it were good old "fat"
> > ethernet which is co-ax then yes, sharp bends are known to degrade signal
> > and
> > introduce interference on this type of cable.
> >
> > --
> > Regards
> >
> > Dave Saville
> >
> >
> >
> > UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org
> >
> >
> > UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org
> >
>
>
> --
> Warren R. Baltimore II
> Remedy Developer
> UW Medicine IT Services
> School of Medicine
> University of Washington
> Box 358220
> 1325 Fourth Ave, Suite 2000
> Seattle, WA 98101
>
> The opinions expressed in this e-mail are in no way those of the
> University of Washington, or the State of Washington. They are my
> own.
>
>
> UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org
>


UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org

**

Lisa this is early Friday humor... its too late to be Thursday humor.. :-)

Joe

"Estrella, Lisa" wrote:

**
Please tell me this is early Friday Humor! LOL!

Lisa




From: Action Request System discussion list(ARSList) [mailto:arslist@ARSLIST.ORG] On Behalf Of L. J. Head
Sent: Thursday, February 23, 2006 11:21 AM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires

I just checked with a gentleman here who is more familiar with cabling than I and he states he has seen some cabling that goes down hill cause significant acceleration of the bits in the cable and a severe bend of the cable at the end of the down hill stretch will cause the 1's to exit the cable through the sheath because of excessive centripetal acceleration. The 0's however are safe from this event because their width does not allow them to fit through the pores of the sheath...and this causing re-transmits of the 1's in the packet due to crc errors




From: Action Request System discussion list(ARSList) [mailto:arslist@ARSLIST.ORG] On Behalf Of Shafqat Ayaz
Sent: Thursday, February 23, 2006 7:48 AM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires
** Hey guys
it is pretty obvious I mean, look at it, if there are kinks then the electrons have to travel further you know like going up and down instead of a straight line, so it would slow them down! everyone knows that a straight line is the shortest distance between two points, I think.
this is a classic and should be recorded for posterity!

shafqat

Dan Caissie wrote:
You are right Rick that if they were bend back and forth like 50 times
or so it could brake the wires inside.
But I would say the problem is with the switch setting or PC they could
be plugged into a 100MB and not a 1Gig Switch or the settings are set
lower all the way down to 10MB and this would make it crawl.
It could also be the settings for there network card or the network card
could just be a slower card not able to run at 1 Gig.

If you ever seen a wiring closet it would scare you most times in most
places.

Do you know if you twist the network wires the data gets corrupted ;)


Dan Caissie
Remedy Administrator / Developer
United Natural Foods, Inc
Dayville, CT 06241
(860)779-2800 Ext:32380


-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:arslist@ARSLIST.ORG] On Behalf Of Warren Baltimore
Sent: Thursday, February 23, 2006 12:16 AM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires

Chris, the ONLY thing that I am aware of related to ethernet cords and
performance is the length of the connection between PC and
router/switch/etc.

Warren

On 2/22/06, Chris Doble wrote:
> **
>
>
> Hey folks,
>
>
>
> Just a bit curious about something I heard.
>
>
>
> A company IT department Director told a VP that the reason some folks
pc's
> were slower than others is that when the installation of the network
cables
> was performed, some of the cables were "kinked". And therefore those
people
> would naturally get slower response times..... blah, blah, blah.
>
>
>
> I'd like to find out if anybody out there has experienced this
phenomenon.
>
>
>
> Thank You,
>
>
>
> Chris Doble
>
> Mobile: 949-533-5346
>
> Email: cdoble@aisconsulting.net
>
> Advanced Integrated Solutions Inc.
>
> http://www.aisconsulting.net
>
>
>
>
>
> 20060125This posting was
> submitted with HTML in it


--
Warren R. Baltimore II
Remedy Developer
UW Medicine IT Services
School of Medicine
University of Washington
Box 358220
1325 Fourth Ave, Suite 2000
Seattle, WA 98101

The opinions expressed in this e-mail are in no way those of the
University of Washington, or the State of Washington. They are my
own.



UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org


UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org





Shafqat Ayaz



Relax. Yahoo! Mail virus scanning helps detect nasty viruses! 20060125This posting was submitted with HTML in it


The information contained in this communication may be CONFIDENTIAL and is intended only for the use of the recipient(s) named above. If you are not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication, or any of its contents, is strictly prohibited. If you have received this communication in error, please notify the sender and delete/destroy the original message and any copy of it from your computer or paper files.
20060125This posting was submitted with HTML in it 20060125This posting was submitted with HTML in it





Yahoo! Autos . Looking for a sweet ride? Get pricing, reviews, & more on new and used cars. 20060125This posting was submitted with HTML in it

Actually, what happens with bent fiber is that the inside of the
cladding becomes ultra reflective and amplifies the light wave's
amplitude. Only drawback is that it causes reverse polarization, which
in turn causes the signal to spawn an anti signal, which in turn runs in
the opposite direction of the original signal. Thus causing management
to get reports that are only black and white, not the pretty colored
ones.

Thank You,

Chris Doble
Mobile: 949-533-5346
Email: cdoble@aisconsulting.net
Advanced Integrated Solutions Inc.
http://www.aisconsulting.net



-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:arslist@ARSLIST.ORG] On Behalf Of Chris Woyton
Sent: Thursday, February 23, 2006 11:43 AM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires

Now ain't that somethin? Learn something new every day. I would have
thought
bent cables reducing throughput would only apply to fiberoptic cables.

Good info - thanks for posting that. :)

-CW

Jim Fox wrote:

That's what we get for trying to talk about a networking topic on a
software
system list. LOL.

Fluxman

-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:arslist@ARSLIST.ORG] On Behalf Of CJT.
Sent: 02/23/2006 9:54 AM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires

Some info off the web re: CAT 5 cable,


URL http://www.danpex.com/faqs/cat5-inst.htm

Extract (DANPEX Corp.):

Anything that kinks the cable or disturbs the precise alignment of the
wire
pairs inside the cable has the potential to create future performance
problems.


URL

http://www.elec-toolbox.com/communications/classifications/cat5/install.
htm

Extract (Electricians Toolbox):

Cat 5 cable requires careful and precise installation to maximize
efficiency
and system performance. Anything that kinks the cable or disturbs the
precise alignment of the wire pairs inside the cable has the potential
to
create future performance problems.


URL http://www.delmar.edu/Courses/ITNW1325/sem1/notes/lessons36-39.html

Extract (mpharris@surf.delmar.edu):

Never secure the cable ties too tightly and try to minimize the amount
of
jacket twisting. Never allow the cable to be pinched or kinked. If this
occurs, data will move more slowly and your local area network will
operate
at less than optimal capacity. If you exceed 25 pounds of pull, wires
inside
the cable can untwist. If wire pairs become untwisted, this can lead to
interference and crosstalk.).


URL

http://72.14.207.104/search?q=cache:xnQfC3To9MEJ:www.sonicmario.com/cisc
o/Se

mester%25201/S1Ch09review.htm+CISCO+kinked+rj45+cable&hl=en&gl=au&ct=cln
k&cd
=10

Extract:

Never allow cables to be pinched or kinked. If this occurs, data
throughput
will be reduced, and the LAN will operate at less than optimal
capacity.


URL

http://www.commsdesign.com/designcorner/showArticle.jhtml?articleID=165
0546
5

Extract (Jason Knickerbocker, Marvell):

Cat5 cable requires careful and precise installation to maximize
efficiency
and system performance. Anything that kinks the cable or disturbs the
precise alignment of the pairs inside the cable has the potential to
create
future performance problems.


URL http://www.derose.net/steve/guides/wiring

Extract (Steve DeRose,):

Never bend CAT5 or higher wire tightly around a corner; make sure it
bends
gradually, so that a whole circle would be at least 2" across.






-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:arslist@ARSLIST.ORG] On Behalf Of Dave Saville
Sent: Thursday, 23 February 2006 9:52 PM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires

On Wed, 22 Feb 2006 20:56:46 -0800, Rick Cook wrote:

>If the wires were bent to the point where they were marginally broken,

>it
might cause intermittent failures, but I can't see it just causing
slowness.
Network cables aren't like garden hoses that can have flow controlled.
I
say that electrons either travel, or they don't.

I agree with Rick *if* the cable is cat5. But if it were good old "fat"
ethernet which is co-ax then yes, sharp bends are known to degrade
signal
and introduce interference on this type of cable.

--
Regards

Dave Saville





UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org





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I know I shouldn't step into this, but I can't help myself. UTP cables come in
three common flavors: categories 3, 5, and 6. The biggest difference among the
three is the amount of twist per unit of length. The larger the number, the
greater the amount of twist.

What's the twist for? Mainly to reduce crosstalk. The more throughput you
have, the higher the induction, hence, more crosstalk. When parallel wires are
twisted, it tends to cancel induction.

Once upon a time, way back in the '90s, my buddy and arrived on site at
Jacksonville AFB. The admin who greeted us was proud to say he had already
wired his lab for Ethernet, so all we had to do was install our Sun boxes.
However, it turned out he had used flat silver satin. I had the unpleasant
task of telling him all his work was for naught. "You see, there's this
phenonmenon called 'crosstalk'..."

Back to the "kinked wires" discussion. It's possible if you fold cat 5 UTP
hard enough, you'll compromise the amount of twist in that section and invite
crosstalk. The more noise, the greater the probability of retransmission. The
problem isn't the electrons going slower; it's the noise induced by crosstalk
that causes the workstation to say, "I'm sorry, could you repeat that?"

--Tim


--- jack trillickson wrote:

> cat 6 cables have specific requirements as to how tightly they can be coiled,
> etc, so kinks in the wires would definitely degrade performance. however
> these cables are used for > gigabit ethernet so it probably wouldn't be what
> this person was talking about
>
> Chris Doble wrote: **
> st1\:*{behavior:url(#default#ieooui) } Hey folks,
>
> Just a bit curious about something I heard.
>
> A company IT department Director told a VP that the reason some folks pc’s
> were slower than others is that when the installation of the network cables
> was performed, some of the cables were “kinked”. And therefore those people
> would naturally get slower response times….. blah, blah, blah.
>
> I’d like to find out if anybody out there has experienced this phenomenon.
>
> Thank You,
>
> Chris Doble
> Mobile: 949-533-5346
> Email: cdoble@aisconsulting.net
> Advanced Integrated Solutions Inc.
> http://www.aisconsulting.net
>
>
>
>
> 20060125This posting was submitted with HTML in
> it
>
>
> ---------------------------------
>
> What are the most popular cars? Find out at Yahoo! Autos
>
>

> UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org


UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org

Well, if they are going to crosstalk, maybe they should be using
non-crosstalking electrons in conjunction with packet grease and make
all the runs downhill. Might be a little faster!!!

I tend to agree with all I've read so far, but the bottom line is that
this particular IT Department is blowing smoke and the other folks in
charge don't know it - yet.

Thank You,

Chris Doble
Mobile: 949-533-5346
Email: cdoble@aisconsulting.net
Advanced Integrated Solutions Inc.
http://www.aisconsulting.net



-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:arslist@ARSLIST.ORG] On Behalf Of Tim Widowfield
Sent: Thursday, February 23, 2006 6:23 PM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires

I know I shouldn't step into this, but I can't help myself. UTP cables
come in
three common flavors: categories 3, 5, and 6. The biggest difference
among the
three is the amount of twist per unit of length. The larger the number,
the
greater the amount of twist.

What's the twist for? Mainly to reduce crosstalk. The more throughput
you
have, the higher the induction, hence, more crosstalk. When parallel
wires are
twisted, it tends to cancel induction.

Once upon a time, way back in the '90s, my buddy and arrived on site at
Jacksonville AFB. The admin who greeted us was proud to say he had
already
wired his lab for Ethernet, so all we had to do was install our Sun
boxes.
However, it turned out he had used flat silver satin. I had the
unpleasant
task of telling him all his work was for naught. "You see, there's this
phenonmenon called 'crosstalk'..."

Back to the "kinked wires" discussion. It's possible if you fold cat 5
UTP
hard enough, you'll compromise the amount of twist in that section and
invite
crosstalk. The more noise, the greater the probability of
retransmission. The
problem isn't the electrons going slower; it's the noise induced by
crosstalk
that causes the workstation to say, "I'm sorry, could you repeat that?"

--Tim


--- jack trillickson wrote:

> cat 6 cables have specific requirements as to how tightly they can be
coiled,
> etc, so kinks in the wires would definitely degrade performance.
however
> these cables are used for > gigabit ethernet so it probably wouldn't
be what
> this person was talking about
>
> Chris Doble wrote: **
> st1\:*{behavior:url(#default#ieooui) } Hey folks,
>
> Just a bit curious about something I heard.
>
> A company IT department Director told a VP that the reason some
folks pc's
> were slower than others is that when the installation of the network
cables
> was performed, some of the cables were "kinked". And therefore those
people
> would naturally get slower response times..... blah, blah, blah.
>
> I'd like to find out if anybody out there has experienced this
phenomenon.
>
> Thank You,
>
> Chris Doble
> Mobile: 949-533-5346
> Email: cdoble@aisconsulting.net
> Advanced Integrated Solutions Inc.
> http://www.aisconsulting.net
>
>
>
>
> 20060125This posting was submitted with HTML
in
> it
>
>
> ---------------------------------
>
> What are the most popular cars? Find out at Yahoo! Autos
>
>


> UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org



UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org


UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org

Hey! I was that customer!

Wait 'till I get hold of my attorney.....

Jerry Niman Tel +44 (0)161-247 1474
Head of Information Systems Email J.Niman@mmu.ac.uk
the Manchester Metropolitan University Mobile +44 (0)7770 638104

Before acting on this email or opening any attachments you should read the Manchester Metropolitan
University's email disclaimer available on its website http://www.mmu.ac.uk/emaildisclaimer

>>> James.McKenzie@HQISEC.ARMY.MIL 23 Feb 06 17:59:21 >>>
Since we all are in a weird sense that this is Friday....

We actually talked a customer into keeping the token ring card connections
because we told him that the ring would be broken if we removed any of the
cables and the token would get lost....

(Sort of on the line of Dilbert. he was definately a PHB, with a degree in
History.)

James McKenzie


-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:arslist@ARSLIST.ORG]On Behalf Of Dan Caissie
Sent: Thursday, February 23, 2006 9:16 AM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires


I have one for you.
My last place I worked we had to deal with Type 1 network wiring and we
still had Token ring now I'm not talking about 5 or 6 years ago this was
last year and it ran at a whole 16MBs what fun.

Dan Caissie
Remedy Administrator / Developer
United Natural Foods, Inc
Dayville, CT 06241
(860)779-2800 Ext:32380

-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:arslist@ARSLIST.ORG] On Behalf Of CJT.
Sent: Thursday, February 23, 2006 9:54 AM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires

Some info off the web re: CAT 5 cable,


URL http://www.danpex.com/faqs/cat5-inst.htm

Extract (DANPEX Corp.):

Anything that kinks the cable or disturbs the precise alignment of the
wire
pairs inside the cable has the potential to create future performance
problems.


URL
http://www.elec-toolbox.com/communications/classifications/cat5/install.
htm

Extract (Electricians Toolbox):

Cat 5 cable requires careful and precise installation to maximize
efficiency
and system performance. Anything that kinks the cable or disturbs the
precise alignment of the wire pairs inside the cable has the potential
to
create future performance problems.


URL http://www.delmar.edu/Courses/ITNW1325/sem1/notes/lessons36-39.html

Extract (mpharris@surf.delmar.edu):

Never secure the cable ties too tightly and try to minimize the amount
of
jacket twisting. Never allow the cable to be pinched or kinked. If this
occurs, data will move more slowly and your local area network will
operate
at less than optimal capacity. If you exceed 25 pounds of pull, wires
inside
the cable can untwist. If wire pairs become untwisted, this can lead to
interference and crosstalk.).


URL
http://72.14.207.104/search?q=cache:xnQfC3To9MEJ:www.sonicmario.com/cisc
o/Se
mester%25201/S1Ch09review.htm+CISCO+kinked+rj45+cable&hl=en&gl=au&ct=cln
k&cd
=10

Extract:

Never allow cables to be pinched or kinked. If this occurs, data
throughput
will be reduced, and the LAN will operate at less than optimal capacity.


URL
http://www.commsdesign.com/designcorner/showArticle.jhtml?articleID=165
0546
5

Extract (Jason Knickerbocker, Marvell):

Cat5 cable requires careful and precise installation to maximize
efficiency
and system performance. Anything that kinks the cable or disturbs the
precise alignment of the pairs inside the cable has the potential to
create
future performance problems.


URL http://www.derose.net/steve/guides/wiring

Extract (Steve DeRose,):

Never bend CAT5 or higher wire tightly around a corner; make sure it
bends
gradually, so that a whole circle would be at least 2" across.






-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:arslist@ARSLIST.ORG] On Behalf Of Dave Saville
Sent: Thursday, 23 February 2006 9:52 PM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires

On Wed, 22 Feb 2006 20:56:46 -0800, Rick Cook wrote:

>If the wires were bent to the point where they were marginally broken,
it
might cause intermittent failures, but I can't see it just causing
slowness.
Network cables aren't like garden hoses that can have flow controlled.
I
say that electrons either travel, or they don't.

I agree with Rick *if* the cable is cat5. But if it were good old "fat"
ethernet which is co-ax then yes, sharp bends are known to degrade
signal
and
introduce interference on this type of cable.

--
Regards

Dave Saville




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Or ...
You could add Dyson vortex twisted wire. It keeps the electrons swirling
so they don't all bunch up at the kink and cause a loss of suction.
Works for your car too! I know it's true. "I read it on the internet."
;^>

John J. Reiser
Software Development Analyst
Remedy Administrator/Developer
Lockheed Martin - MS2
The star that burns twice as bright burns half as long.
Pay close attention and be illuminated by its brilliance. - paraphrased
by me


-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:arslist@ARSLIST.ORG] On Behalf Of Chris Doble
Sent: Thursday, February 23, 2006 10:32 PM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires

Well, if they are going to crosstalk, maybe they should be using
non-crosstalking electrons in conjunction with packet grease and make
all the runs downhill. Might be a little faster!!!

I tend to agree with all I've read so far, but the bottom line is that
this particular IT Department is blowing smoke and the other folks in
charge don't know it - yet.

Thank You,

Chris Doble
Mobile: 949-533-5346
Email: cdoble@aisconsulting.net
Advanced Integrated Solutions Inc.
http://www.aisconsulting.net



-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:arslist@ARSLIST.ORG] On Behalf Of Tim Widowfield
Sent: Thursday, February 23, 2006 6:23 PM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires

I know I shouldn't step into this, but I can't help myself. UTP cables
come in three common flavors: categories 3, 5, and 6. The biggest
difference among the three is the amount of twist per unit of length.
The larger the number, the greater the amount of twist.

What's the twist for? Mainly to reduce crosstalk. The more throughput
you have, the higher the induction, hence, more crosstalk. When
parallel wires are twisted, it tends to cancel induction.

Once upon a time, way back in the '90s, my buddy and arrived on site at
Jacksonville AFB. The admin who greeted us was proud to say he had
already wired his lab for Ethernet, so all we had to do was install our
Sun boxes.
However, it turned out he had used flat silver satin. I had the
unpleasant task of telling him all his work was for naught. "You see,
there's this phenonmenon called 'crosstalk'..."

Back to the "kinked wires" discussion. It's possible if you fold cat 5
UTP hard enough, you'll compromise the amount of twist in that section
and invite crosstalk. The more noise, the greater the probability of
retransmission. The problem isn't the electrons going slower; it's the
noise induced by crosstalk that causes the workstation to say, "I'm
sorry, could you repeat that?"

--Tim


--- jack trillickson wrote:

> cat 6 cables have specific requirements as to how tightly they can be
coiled,
> etc, so kinks in the wires would definitely degrade performance.
however
> these cables are used for > gigabit ethernet so it probably wouldn't
be what
> this person was talking about
>
> Chris Doble wrote: **
> st1\:*{behavior:url(#default#ieooui) } Hey folks,
>
> Just a bit curious about something I heard.
>
> A company IT department Director told a VP that the reason some
folks pc's
> were slower than others is that when the installation of the network
cables
> was performed, some of the cables were "kinked". And therefore those
people
> would naturally get slower response times..... blah, blah, blah.
>
> I'd like to find out if anybody out there has experienced this
phenomenon.
>
> Thank You,
>
> Chris Doble
> Mobile: 949-533-5346
> Email: cdoble@aisconsulting.net
> Advanced Integrated Solutions Inc.
> http://www.aisconsulting.net
>
>
>
>
> 20060125This posting was submitted with HTML
in
> it
>
>
> ---------------------------------
>
> What are the most popular cars? Find out at Yahoo! Autos
>
>


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