Cabling
UTP AND FIBER CABLING
Cabling
Structured Cabling Infrastructure
Mounted and permanent
Allows patching
Comfort that infrastructure
is OK
Components:
Information Outlet with Face
Plate
Patch Panel
UTP Cable
Patch Cord
Cabling
I/O & Faceplates
Faceplate mounts on or
in wall or in raceway
Single or Dual
Information Outlet (I/O)
Provide network
connectivity to the
Hosts through a Patch
Cord
Cabling
Patch Panel
Termination
punchdown in back
Patch cord plugin in
front
Cabling
Patch Cord & UTP Connectors
Cabling
Color Codes
Data Tx: 1 & 2
Data Rx: 3 & 6
Crossover
13
26
PoE +VDC: 4 & 5
PoE -VDC: 7 & 8
Cabling
difference between a straight and a
crossover Ethernet cable
Cable type Typical application
Straight-through •Between a computer and a modem,
router, or switch
•CAT5/CAT6 peripheral extenders
•Between other dissimilar
networking equipment
Crossover •Between two computers
•Between two similar networking
devices
Many modern network devices support Auto MDI-X
(Medium-dependent interface), which automatically
negotiates which wiring standard is required. For
example, a computer with Auto MDI-X can use either a
straight-through or crossover cable for any application.
Hub with three MDI-X ports and one switchable port
Cabling
Cutting, Striping & Crimping Tools
Make your own patch cords
Cuts and strips pairs
RJ45 end crimped onto ends
of wire
Cabling
Punching Tool
Terminates wires to back
of patch panels and in
Information Outlets
Cabling
Making Cables
Cabling
Wire Testing Equipment
Test wire for correct
termination of 8 wires
Test for speed
capabilities
Cabling
Cabling Rules
Try to avoid running cables parallel to power cables.
Do not bend cables to less than four times the diameter of the
cable.
If you bundle a group of cables together with cable ties (zip
ties), do not over-cinch them. You should be able to turn the tie
with fingers.
Keep cables away from devices which can introduce noise into
them. Here's a short list: copy machines, electric heaters,
speakers, printers, TV sets, fluorescent lights, copiers, welding
machines, microwave ovens, telephones, fans, elevators,
motors, electric ovens, dryers, washing machines, and shop
equipment.
Avoid stretching UTP cables (tension when pulling cables
should not exceed 25 LBS).
Do not run UTP cable outside of a building. It presents a very
dangerous lightning hazard!
Do not use a stapler to secure UTP cables. Use telephone
wire/RJ6 coaxial wire hangers which are available at most
hardware stores.
•Category 5, 5e, and 6 cables: four times
the cable diameter
•Fiber patch cord: ten to fifteen times the
cable diameter
telephone wire/RJ6 coaxial wire hangers
Cabling
Fiber Optic Cabling Infrastructure
Components:
Fiber Cable
Fiber Pigtail
Fiber Connectors
LIU
Coupler
Fiber Patch Cord
Cabling
Fiber Optic Connectors
Terminates the fibers
Connects to other fibers
or transmission
equipment
Cabling
Fiber Patch Cords & Pigtails
Ends are typically
either SC or ST
Pigtails have
connectors on only one
side and Patch Cords
have it on both sides.
Pigtails are spliced to
the fiber to terminate
the fiber
Patch Cord connects
switches to the Fiber
cable
Cabling
LIU & Couplers
Cabling
Fiber Optic Installation –
Outside Plant
Cabling
Fiber Optic Installation –
Outside Plant
Fiber is blown in HDPE
Pipes, 1 m deep.
The HDPE pipes is
covered with sand and
brick lining
Fiber Roles are
typically 2 Km. Fiber
cables are spliced
using Jointers
Faults like fiber cut are
located using OTDR
(Optical Time Domain
Reflectometer)
