2. Ethernet Cable
The name, Ethernet
Cable, always refers
to the following
category:
Category 5
Category 5e
Category 6
Or more than those
categories.
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3. UTP categories
Category 1 Voice only (Telephone)
Category 2 Data to 4 Mbps (Localtalk)
Category 3 Data to 10Mbps (Ethernet)
Category 4 Data to 20Mbps (Token ring)
Category 5
Category 5e
Data to 100Mbps (Fast Ethernet)
Data to 1000Mbps (Gigabit Ethernet)
Category 6 Data to 2500Mbps (Gigabit Ethernet)
5. Ethernet Cable
Color Pin (T568B)
White/Orange 1
Orange 2
White/Green 3
Blue 4
White/Blue 5
Green 6
White/Brown 7
Brown 8
• You can use the order of rainbow colors to
memorize the order of this wiring.
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7. How to wire
Prepare the materials
and tools.
Cable & RJ-45 plugs
Scissors
Crimping tool
Cutter
LAN Tester
UTP Cable
Stripper
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The Purpose of Straight-Through Cables
Straight-through cables get their name from how they are
made. Out of the 8 pins that exist on both ends of an Ethernet
cable, each pin connects to the same pin on the opposite
side. Review the diagram below for a visual example:
Straight –thru and Cross-over Cable
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Use a straight-through cable when:
1. Connecting a router to a hub
2. Connecting a computer to a swtich
3. Connecting a LAN port to a switch, hub, or
computer
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The Purpose of Crossover Cables
Crossover cables are very similar to straight-through cables,
except that they have pairs of wires that crisscross. This
allows for two devices to communicate at the same time.
Unlike straight-through cables, we use crossover cables to
connect like devices. A visual example can be seen below:
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Use a crossover cable when:
1. Connecting a computer to a router
2. Connecting a computer to a computer
3. Connecting a router to a router
4. Connecting a switch to a switch
5. Connecting a hub to a hub
12. How to wire
Strip off suitable length of the cable sheath.
About 2-2.5 cm
You can mark the position first.
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13. How to wire
Align the colored wires according to the specific order.
(Later we will talk about.)
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1 2 3 4 5 6 7 8
14. 1→8
How to wire
Straight Through
All order of the wirings is the same as the other side.
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
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15. Straight Through
Host A Host B
Pin Usage Color Color Usage Pin
1 Tx+ Tx+ 1
2 Tx- Tx- 2
3 Rx+ Rx+ 3
4 -- -- 4
5 -- -- 5
6 Rx- Rx- 6
7 -- -- 7
8 -- -- 8
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16. 1→8
How to wire
Crossover
We need to change the order of the transmission and
receiving wirings.
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
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21. How to wire
Crimp the RJ45 plug with the crimping tool.
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22. How to wire
Verify the order of the wires is correct and all the wires
are correctly making good contact with the metal
contacts in the RJ45 plug.
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Incorrect
Correct
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25. How to wire
Cut the cable into suitable length and repeat the below
steps for the other side.
Please be sure what kind of the cable you are wiring.
Testing
25
Straight Through Crossover
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26. Summary
1. Strip cable end
2. Untwist wire ends
3. Arrange wires
4. Trim wires to size
5. Attach connector
6. Check
7. Crimp
8. Test
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Installing Cable - Some Guidelines
When running cable, it is best to follow a few simple rules:
•Always use more cable than you need. Leave plenty of slack
•Test every part of a network as you install it. Even if it is
brand new, it may have problems that will be difficult to
isolate later.
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•Stay at least 3 feet away from fluorescent light boxes and
other sources of electrical interference.
•If it is necessary to run cable across the floor, cover the
cable with cable protectors.
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•Label both ends of each cable.
•Use cable ties (not tape) to keep cables in
the same location together
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Direction: Classify as to what type of network cable (straight
through/crossover cable) is used in connecting the given
devices below: Write ST for straight through and CO for
crossover.
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Direction: Arrange the following according to the pin
number designations for each color in T-568B and T-
568A Use numbers 1-8.
T-568B T568-A
________Green _______Orange
________White Brown _______Blue
________White Green _______Green
________Blue _______Brown
________Brown _______White Blue
________Orange _______White Green
________White Orange _______White Brown
________White Blue _______White Orange
Follow Up:
