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Horizontal Cables

◦ 568-C specifies 100 Ohm 4-pair UTP or 62.5/125 multimode fiber optic cable
◦ Connects patch panel to wall plate information outlet (IO)

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Unit 4
Key Concept 1: Cables and Cabling Systems

Backbone Cables

◦ 568-C specifies 100 Ohm 4-pair UTP, 62.5/125 multi-mode or 8.3/125 single-mode optical cable
◦ Connects high speed network devices

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Patch Cords

◦ Should be factory made stranded UTP or FO
◦ Connects switch ports to patch panel or host to IO

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2

Wall Plates
◦ A plate that houses an IO and connects to a box in the wall
◦ May be fixed or modular (pictured)

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Cabling Pathways

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◦ Physical constructs to attach cables to in route
◦ Conduits and raceways enclose the cable
◦ Cable trays and caddies support the cable

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http://www.supplierlist.com/photo_images/17963/Fiber_Optic_Distribution_CaseRack_Mounted_ODFFib.jpg

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3

Fiber Protection Systems
◦ Designed to protect optical cable and preserve appropriate bend radius

5

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Now check out the animations from chapter 5, Cabling System Components.

Cable Type

Common Application

UTP Cat 3

10Base-T, 4Mbps Token Ring

UTP Cat 4 (no 568-C)

16Mbps Token Ring

Refer to the Instructor’s Resource Section in the Instructor Guide for Directions on
Downloading the Animations

UTP Cat 5e

100Base-TX, 1000Base-T

UTP Cat 6

100Base-TX, 1000Base-T

UTP Cat 6A

100Base-TX, 1000Base-T, 10Gigagbit Ethernet

25 pair UTP Cat 5e

10Base-T, 100Base-TX, 1000Base-T

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Main link to the Animations:

Shielded twisted pair

4 and 16Mbps Token Ring

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http://bcs.wiley.com/he-bcs/Books?action=index&itemId=0470477075&bcsId=5638

Screened twisted pair

100Base-TX, 1000Base-T, 10Gigagbit Ethernet

Coax RG-58

Thinnet (10Base2)

Coax RG-59

CATV

Coax RG-6/U

CATV, HDTV, satellite, cable modem

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Note: You must have an active Internet connection

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7

UTP

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◦
◦
◦
◦

Four Pairs of Copper Cable
Number of twists varies per inch
No shielding
Very easy to work with 100
Ohm, 24AWG
◦ Solid for horizontal and stranded for patch cable
◦ Most susceptible to
Electromagnetic Interference
(EMI)

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

Why copper?
◦ High quality
◦ Well understood
◦ High speeds (upto 10G
Ethernet)
◦ Easy to work with
◦ Equipment supporting copper is less expensive

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10

Defined in 2008
500 MHz bandwidth

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RG-58C/U
 50 ohm/20AWG
 End of life
RG-59/U
 75 ohm/20AWG
 CATV
RG-6/U
 75 ohm/18AWG
 HDTV, satellite, cable modem

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Defined in 2002
250 MHz bandwidth

Cat 6A
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Defined in 1999
100 MHz bandwidth

Cat 6
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8

Cat 5e
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Why not?
◦ Susceptible to EMI and RFI
◦ Eavesdropping difficult to detect ◦ Higher speeds available on other media
◦ Copper is a precious metal and cost will increase as supply diminishes Copyright 2012, ITT ESI

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Best Practices for Installation

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Tone and Probe
◦ Tone generator applies power to one end of a cable ◦ Signal can be detected by the amplifier probe when in close proximity of the wire ◦ Used to identify one cable out of several

◦ Have a plan!
◦ Follow standards
◦ Do not exceed distance limits: horizontal max 90m and patch cable max 5m at each end
◦ Be careful not to stretch cable when pulling – use lubrication, if necessary
◦ Be careful to not exceed bend radius
◦ UTP should cross electrical cables at 90 degrees and never run in parallel
◦ Properly support cables
◦ Keep the job neat: get referrals and easy servicing
◦ Test all circuits
◦ Document everything

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13

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Wire-Map Testers

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◦ Used to detect wiring errors or broken cables
◦ Performs end to end continuity test on each wire ◦ Necessary to provide cable certification

14

Test and certify four common problems