UTP cable

October 20, 2009 at 23:49:21
Specs: Microsoft Windows XP Professional, 1.666 GHz / 1014 MB
Can i connect the UTP cable to a modem??

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October 21, 2009 at 06:02:53
Yes you can.

Will it do what you want? I don't know since you haven't provided enough info.

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October 21, 2009 at 07:02:26
I have bought an external USB-LAN adapter.. And the seller told me that it will not work if i connect directly to my current LAN cable.. He asked me to change my cable to peer to peer network cable which also known as UTP cable (am i right??)

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October 21, 2009 at 07:18:20
Hmmm.........sounds like he was trying to tell you you need a crossover cable. I would call and confirm this with whomever before buying any cables.

It's all UTP (Unshielded Twisted Pair) whether it's a crossover or a regular patch (network) cable.

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October 21, 2009 at 07:28:31
Owh..i see.. Then what is RJ-45 then??

Back to the topic, you are right.. i need a crossover cable.. can this crossover cable connect directly to the modem??
how to differentiate straight through and crossover cable??

Thanks a lot!! ^^

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October 21, 2009 at 07:58:06
RJ-45 is the type of plug that goes onto the end of Cat5/6 cable which can be either UTP (Unshielded Twisted Pair) or STP (Shielded Twisted Pair) but mostly UTP.

If you have USB modem it is unlikely you will be able to connect Cat5 UTP cable unless it has a socket to take an RJ-45 plug.

The difference between straight through and crossover cable is the way the plug is wired at one end. In a crossover cable the individual pairs are crossed over. A crossover cable is only used when connecting two similar pieces of equipment together, usually two computer via the Netwrok Interface Card or two switches.

Normaly connecting a Modem to a computer does not require a crossover cable.


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October 21, 2009 at 07:59:43
rj45 are the ends of the cables

if you google straight thru you will see pin out diagrams of both straight and crossover. That is how you tell or test.

These are all questions the guy selling the modem should know. Saying peer to peer cable is a good indication of a lack of knowledge. I would be suspicious.

Standard usb lan dongles use regular patch [straight thru] cables.

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October 21, 2009 at 08:07:22
So, RJ-45 is different from the standard usb lan cable??

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October 21, 2009 at 08:31:27
No, an RJ-45 is the standard plug used on a network cable.

A USB connector is a completely different type of plug.

While I've never played with a USB network interface (you couldn't give me one, I'd rather use a real NIC thank you very much!) I suspect the USB dongle plugs into the computer's USB port and has an RJ-45 plug (female) at the other end that you plug your network cable into.

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October 21, 2009 at 12:58:44
Your usb adapter sounds like a usb device that you use to connect to networks. An usb ethernet adapter.

Almost all of this have software built inside that allows you to use either an ethernet crossover or patch cable. I have never seen one that didn't. Sometimes they don't correctly guess the cable. If it is real old it may not support this feature.

Playing to the angels
Les Paul (1915-2009)

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