How to attach cat 6 cable to rj-45 jack - Computers & Internet

Before you change anything - is this a new device you are hooking up or had this thing worked in the past? First thing to do is reboot everything starting with the modem and ending with the computer at the end of the line. Wait at least 30 seconds between each device. Review all the connections - everything plugged in where it should be? (this is of course your question - see more below).

Eithernet connections (plugs) are RJ-45. The RJ-45 looks like a RJ-11 (telephone jack) only bigger. Typically, the RJ-45 will not fit into the RJ-11 AND SHOULD NOT. Why? Your Cat 5 eithernet runs on very low voltage and signal (packet switching). If you succedssfully get the RJ-45 CAT 5 cable into the RJ-11 phone jack, when the phone rings, you will be sending 60 volts into your network. Can you spell "Do I smell smoke?" A RJ-11 will have up to 6 wires (one pair or two pair or three pair) in the jack and up to 6 'buds' on the RJ-11 plug. A RJ-45 will have 8 wires (in the jack) and 8 'buds' on the plug of your cat 5.

Your device may say DSL on the Cat 5 connection - count the wires inside or the jack.

There are other Cat 5 connection types, punch down and terminal screw types, I dont think you are talking about either.

On your AT&T modem, you should find a RJ-11 which will attach to a near by telephone jack and a RJ-45 for your Cat 5 cable. Your modem may also serve as a router and as such would have additional RJ-45 ports. I suspect you are using a separate router for your home network. As such, one of the ports on the router should be marked Internet or Upload or maybe it is a special color or is set aside from the other ports. That special port will be connected to your modem and your other computers will use the other, lesser ports.

Of course, you could call your service provider for clarification also.

Thank you for your question @ FixYa.com - I am sorry you are having this trouble and I hope I have helped you in some way. I hope you are able to get your system back up in short order.

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The only "outputs" from a DSL-router are:
* RJ-11 telephone-jack, only if the router also supports voice-over-IP,
* RJ-45 Ethernet port (always present)

You need to purchase an internal network-card, to create an RJ-45 port on the computer, and then use the CAT-5e cable to make the connection.

Do you mean DSL? DSL still requires an interface called a modem. You will connect your dsl to one "side" of the modem and your computer to the other (side) of the same device. Your modem may have a RJ-45 or a USB or a cable and/or a RJ-11 and possibly other ports. I'm sure there will be instructions with your new device.

Some RJ 45 jack cable has fault so try with another RJ 45 jack cable .. Purchase new rj 45 jack cable from nearest computer shop. There must be 2 port on modem 1 for ADSL phone line cable and otthr for LAN ethernet port means RJ 45 jack port. Try with another rj 45 jack cable it should be connect.Make sure that LAN port of modem is not faulty means make sure pins on that port are not break. Let me know if you need further assistance. Thanks for using FixYa.

These ports are soldered onto the motherboard. They can be changed out by a tech that has the right equipment. I have been able to successfully pull these off at one time using a heat gun set to high for 15 seconds. Then the solder points need to be cleaned thoroughly and the new jack placed into the brass sleeves of the motherboard and each leg soldered into position.

On the right hand side starting from the front to the back, the ports are
1. (2) USB Ports
2. TV/Cable jack if applicable, some models don't have.
3. RJ-11 Modem Jack
4. Security cable Slot
5. Power Connector

On the Left side Starting from front to back. the ports are.
1. Express Card Slot
2. Digital Media Slot (below the Express Card)
3. 1394 (firewire) slot (some models don't have)
4. USB Port
5. E-Sata Port
6. HDMI Port
7. RJ-45 Ethernet Port
8. Expansion Port Type 3 (attaching docking station etc.)
9. External Monitor Port

The order you give is right. Ethernet uses the orange pair and the green pair (1, 2, 3, 6). Phone uses the blue pair (4, 5).

RJ -45 is a type of connector used on cat5, cat5e....etc cables to connect networked devices...the RJ stands for registered jack but there is really not much you really need to know about it....a RJ 45 JACK is a little bigger than a telephone jack, you'll notice the female type of input on your computer or laptop and the male end will be on the end of the cable that goes into this jack....hope this helps

568-B Wiring
Pair Wires RJ-45 pins
1-White/Blue White/Blue 5
Blue/White 4
2-Wht./Orange White/Orange 1
Orange White 2
3-White/Green White/Green 3
Green/White 6
4-White/Brown White/Brown 7
Brown/White 8
568-A Wiring
1-White/Blue White/Blue 5
Blue/White 4
2-White/Green White/Green 1
Green/White 2
3-White/Orange White/Orange 3
Orange/White 6
4-White/Brown White/Brown 7
Brown/White 8
RJ-45 Pins are with the spring tab down and read left to right. Do you have an RJ-45 Crimping tool?
Just use 568-B or 568-A on both ends of the same cable.

Either your wallmount is not correctly crimmped according to the standards or your cable is not correctly crimmped according to the standards. So its better you crimp the cable and fix the R.J 45 connector in the sequence given herewith.colour coding of the cable:-
1-oranage white
2-orange
3-White green
4-Blue
5- White blue
6-Green
7-White brown
8-Brown
The same Sequence should be at the wallmount and at the R.J 45 connector.