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Do network ports carry power?
Master_Scythe 
1/9/08 8:48:14 PM
Titan

basic question.

if i put a network cable into a standard switch, do any pins provide me with any voltage whatsoever?

thanks :)

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4200+X2 939, ASUS A8N-SLI-D, Ati HD3850, 1gb,1tb total HDD, 109 DVD, LG DVD-rom.
Quote by Girvo
I've got a wicked tiny one that is ridiculously sensitive.



iamthemaxx 
1/9/08 8:49:01 PM
Mod
SuperHero

Immortal


Yes.

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1shot1kill 
1/9/08 8:49:46 PM
SuperHero
Colossus


Quote by iamthemaxx
Yes.



Simple question, simple answer. I likes it.

-----
Harden up, BITCHES!!

Quis custodiet custodes ipsos?

It's still rocket surgery. I just make it look easy, is all.

smadge1 
1/9/08 8:51:18 PM
Immortal

lol

you won't get a correct answer if you don't ask a correct question.

how do you think the network cable transmits data without electricity?

is it usable? well, that's what you didn't ask.

Try plugging a "lan cable tester" into the switch and see which pins the signals are on.


Edited by smadge1: 1/9/2008 8:52:02 PM

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I have a bag of salty nuts.

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iamthemaxx 
1/9/08 9:14:24 PM
Mod
SuperHero

Immortal


Quote by smadge1
how do you think the network cable transmits data without electricity?



Well the internet is tubes right, so it must be air!

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colganaitor 
1/9/08 9:15:07 PM
Primarch

Yeah. Little pulses of electricity, that, infact, can be interpreted as binary.

Try hooking up a low-volt LED and see if it lights up when you connect it to the right pins . . .

And then watch as the computer gets very confused sending digital signals to an analog device.

/rant

-----
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mark84 
1/9/08 11:12:54 PM
Hero
Guru


Look up "Power over Ethernet" if you're needing to power something only from the LAN cable.

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Thom0 
1/9/08 11:55:49 PM
Champion

I'm not really up to speed on it but I think PoE uses some or all of the unused 4 pins of an 8P8C plug (also incorrectly known as RJ45). You would also need a switch that supports 802.3af and you plug into that.

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Master_Scythe 
2/9/08 12:55:18 AM
Titan

anyone know if any of said pins provide a constant flow of electricity?

like a phone line does.

and if so. how much. and on what pins.

-----
4200+X2 939, ASUS A8N-SLI-D, Ati HD3850, 1gb,1tb total HDD, 109 DVD, LG DVD-rom.
Quote by Girvo
I've got a wicked tiny one that is ridiculously sensitive.



iamthemaxx 
2/9/08 7:50:41 AM
Mod
SuperHero

Immortal


Fuck man, go look it up yourself.
This is the internet.

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Electra 
2/9/08 8:20:22 AM
Apprentice

Quote by 1shot1kill
Quote by iamthemaxx
Yes.



Simple question, simple answer. I likes it.


Simpletons rool man.

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Master_Scythe 
2/9/08 12:00:41 PM
Titan

Quote by iamthemaxx
Fuck man, go look it up yourself.
This is the internet.



Bit harsh there mate.
I wouldnt be posting it unless id googled it. every time i put an electricity related word with eithernet or patch, it just comes back to PoE, which isnt what i want.

It seems the pins change voltage based on data, which makes sense, I just wondered if any of them had a constant flow.

if its that hard for someone that knows to type less than a sentence to help me out, then sorry. Enjoy your nazi regeime

-----
4200+X2 939, ASUS A8N-SLI-D, Ati HD3850, 1gb,1tb total HDD, 109 DVD, LG DVD-rom.
Quote by Girvo
I've got a wicked tiny one that is ridiculously sensitive.



smadge1 
2/9/08 12:10:53 PM
Immortal

you asked the wrong question, which is why you were ridiculed.

PoE is the only way to provide power over a network connection, without damaging equipment, or corrupting data.

-----

I broke my ass in a farting accident.
I have a bag of salty nuts.

[ .. The WHS Guy .. ]

http://geocline.net/
17938

iamthemaxx 
2/9/08 12:17:08 PM
Mod
SuperHero

Immortal


Quote by smadge1
you asked the wrong question, which is why you were ridiculed.

PoE is the only way to provide power over a network connection, without damaging equipment, or corrupting data.



Hence this reply;
Quote by mark84
Look up "Power over Ethernet" if you're needing to power something only from the LAN cable.

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mark84 
2/9/08 1:48:57 PM
Hero
Guru


Master_Scythe - Could you elaborate a bit on what you're trying to do?

-----
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AtomicMPC Firefox extension
http://tinyurl.com/2qabr7

The Truth About Graphics Power Requirements V2
http://tinyurl.com/cj3pw

drago13666 
2/9/08 2:04:36 PM
Titan

you fail at google

google -> rj45 pins = http://www.nullmodem.com/RJ-45.htm

you have 2 transmit, 2 recieve and the rest blank

unless you have some wierd ISDN S/T interface mentioned on that page that seems to (optionally) have -48v dc on pins 7 and 8

You have no usable voltage over ethernet

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smadge1 
2/9/08 2:23:27 PM
Immortal

PoE on Gigabit switches is even more fun...

-----

I broke my ass in a farting accident.
I have a bag of salty nuts.

[ .. The WHS Guy .. ]

http://geocline.net/
17938

1shot1kill 
2/9/08 5:05:47 PM
SuperHero
Colossus


Quote by drago13666
You have no usable voltage over ethernet



That's a lot different to any voltage whatsoever.

-----
Harden up, BITCHES!!

Quis custodiet custodes ipsos?

It's still rocket surgery. I just make it look easy, is all.

Master_Scythe 
3/9/08 1:33:38 AM
Titan

Quote by drago13666
you fail at google

google -> rj45 pins = http://www.nullmodem.com/RJ-45.htm

you have 2 transmit, 2 recieve and the rest blank

unless you have some wierd ISDN S/T interface mentioned on that page that seems to (optionally) have -48v dc on pins 7 and 8

You have no usable voltage over ethernet



sorry man, but Network cables DONT use RJ45, and telephones use RJ11 (dont quote me on this second one).

I have my answer, thanks everyone.

-----
4200+X2 939, ASUS A8N-SLI-D, Ati HD3850, 1gb,1tb total HDD, 109 DVD, LG DVD-rom.
Quote by Girvo
I've got a wicked tiny one that is ridiculously sensitive.



1shot1kill 
3/9/08 7:05:50 AM
SuperHero
Colossus


Quote by Master_Scythe
sorry man, but Network cables DONT use RJ45, and telephones use RJ11 (dont quote me on this second one).



So what terminator do network cables use it it's not RJ45?


Nevermind, I figured it out. RJ45 is the standard that ethernet connectors must adhere to. Ethernet cables use 8P8C connectors.

Telephone cables don't use RJ11 connectors as RJ11 is the standard.

http://en.wikipedia.org/wiki/8P8C


Edited by 1shot1kill: 3/9/2008 7:12:00 AM

-----
Harden up, BITCHES!!

Quis custodiet custodes ipsos?

It's still rocket surgery. I just make it look easy, is all.

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