Lecture 11a-

LESSON NO:11a
Network Cabling
Making connections with Cat5
Way cool!
SMI-Lecturar Samreen Javed

Overview
 What cable types are available?
 How do cables work?
 How are cables used in networking?
 How are connections made?

Learning Objectives
 List common cable types used in networking
 Describe how UTP cables are made
 Explain how UTP cables are used in Ethernet
networks
 Demonstrate the ability to make a working
patch cable
 Name the two wiring standards used for
wired Ethernet networks and their uses

Common network cable types
 Coaxial cable
 Unshielded
twisted pair
 Fiber optic

UTP characteristics
 Unshielded
 Twisted (why?) pairs of insulated conductors
 Covered by
insulating sheath

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)

Cat5e cable
 1000Mbps data capacity
 For runs of up to 90 meters
 Solid core cable ideal for structural
installations (PVC or Plenum)
 Stranded cable ideal for patch cables
 Terminated with RJ-45 connectors

RJ45 connector

Making connections - Tools
 Cat5e cable
 RJ45 connectors
 Cable stripper
 Scissors
 Crimping tool

Making connections - Steps
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

Step 1 – Strip cable end
 Strip 1 – 1½” of insulating sheath
 Avoid cutting into conductor insulation

Step 2 – Untwist wire ends
 Sort wires by insulation colors

Step 3 – Arrange wires
 TIA/EIA 568A: GW-G OW-Bl BlW-O BrW-Br
 TIA/EIA 568B: OW-O GW-Bl BlW-G BrW-Br

Step 4 – Trim wires to size
 Trim all wires evenly
 Leave about ½” of wires exposed

Step 5 – Attach connector
 Maintain wire order,
left-to-right, with RJ45
tab facing downward

Step 6 - Check
 Do all wires extend to end?
 Is sheath well inside connector?

Step 7 - Crimp
 Squeeze firmly to crimp connecter
onto cable end (8P)

Step 8 – Test
 Does the cable work?

Let’s go to work!

Lecture 11a-

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Lecture 11a-