CLIL Activity – I.T.I.S. “C. Zuccante”
5ISB – School Year 2005/06
STRUCTURED CABLING
Final Exam Compendium
A. Memo
Brain storm
What’s structured cabling?
What’s the meaning of “structured”?
What’s the meaning of
“standardisation”?
Is my house cabled?
Where, when and how was cabled?
Why the law covers the structured
cabling problem?
Objectives
Structured cabling systems
Terminology
Passive Devices
Cross Connect technology
for the
final exam
1.
2.
3.
4.
I. Documentation
II. Installation technique
III.Mini-glossary
Structured Cabling Systems
Structured cabling is a method
for creating
an organized cabling system that can be easily
understood by installers ,
network administrators
technicians
, and any other
that deal with cables
Structured Cabling Systems
Rules
of Structured Cabling for LANs
look for a complete connectivity solution
plan for future growth
maintain freedom of choice
in vendors
Subsystems of
Structured Cabling
Backbone Pathway
Horizontal Pathway
Antenna Entrance
Telecommunications
Room/Closet
Tie Pathway
Telecommunications
Room/Closet
Equipment Room/Closet
Backbone Pathways
Horizontal Pathway
Entrance Room/Closet
Main Terminal Space
(Entrance Facility)
Interbuilding Backbone
Alternate Entrance
Demarcation Point
Telecommunications
Outlet
Work Area
Subsystems of
Structured Cabling
Demarcation Point
punto di
demarcazione
dorsale tra edifici
Interbuilding Backbone
accesso alternativo
Alternate Entrance
between outside
service provider
cables and
customer cables
Subsystems of
Structured Cabling
presa di rete
Telecommunications
Outlet
Work Area area di lavoro
Subsystems of
Structured Cabling
stanza dei dispositivi
Equipment Room/Closet
canalizzazione orizzontale
o di piano
Horizontal Pathway
Entrance Room / Closet
Main Terminal Space
(Entrance Facility)
stanza / armadio
d’accesso principale
(interconnessione interbuilding-intrabuilding)
Telecommunications
Room/Closet
stanza / armadio
di permutazione
di piano
Subsystems of
Structured Cabling
Tie Pathway
canala passacavi
Backbone Pathway
canalizzazione di dorsale
o canalizzazione verticale
o canalizzazione di edificio
Backbone Pathways
Subsystems of
Structured Cabling
Antenna Entrance
ingresso d’antenna
Subsystems of Structured Cabling
other diagram example
?
?
?
?
?
Subsystems of Structured Cabling
a larger example
Horizontal Cabling
Building A
Telecommunication
Outlet
Floor Distributor /
Telecommunication
Closet
Building Distributor /
Telecommunication
Closet
campus
comprensorio
Building C
Building B
Building
Backbone
Campus
Backbone
Campus Distributor /
Telecommunication
Closet
Cabling logical diagram
Campus Distributor /
Main cross Connect
Campus Backbone
Building Distributor /
Intermediate cross Connect
Building backbone
or vertical cabling
Floor Distributor /
Horizontal cross
Connect
Telecommunication
Closets
horizontal
cabling
Telecommunication
Outlets
optional cabling (not allowed)
optional Transition Point
Campus Equipment Room
more complex than Telecommunication Closet
Tie Pathway for cables
to electronic devices
Cables from
Service Provider
Electronic Devices
to Building
Distributor /
Intermediate
cross Connect
Main cross Connect
Demarcation Point
plywood
panel
Telecommunications Room
Patch Panel (front)
Distribution Rack
Telecommunication Closet
Raceways
A raceway is a channel
that contains cables.
Raceways include
common electrical
conduits
,
specialized cable trays
or ladder racks
,
in-floor duct systems
and plastic or metal
surface mounted
raceways.
,
Patch Panel
Patch panel and Patch Cord
Panel for UTP
Panel with
telephonic
cross-connect
cables with 16 RJ45
Panel for optical fiber with 16 SC
Optical Patch Cord
Patch Cord
connectors
Patch panel and Patch Cord
Data
Voice
Telecommunication
Telecommunication
Closet
Outlet
Horizontal Cabling
Telecommunications
Closet
Work Area
I1
horizontal cabling 90 m
I2
I3
HC
I1 + I2 + I3 = 10 m
= cross-connect
I1 = work area cable
= telecommunication outlet
I2 = patch cord
= transition point
I3 = equipment cable
Telecommunication Outlet
four pairs cable directly
connected on RJ45 socket
four pairs cable connected
on plug RJ45
adapter
Working Area
• work area
• at least two outlet
• about 10 m2
• patch
• max 90 m
Work Area
Cable
RJ45: socket and plug
RJ45
Wall Socket (receptacle )
or Telecommunication Outlet
jack
RJ45
or plug (male)
TIA/EIA Standard
ALTERNATE (T568A)
PREFER (T568B)
PAIR 2
PAIR 3
PAIR 3
1 2
W G
G
PAIR 1
PAIR 4
3 4
5 6 7 8
W BL W O W BR
O
BL
BR
JACK POSITIONS
PAIR 2
1 2
W O
O
PAIR 1
PAIR 4
3 4
5 6 7 8
W BL W G W BR
G
BL
BR
JACK POSITIONS
UTP cable
Pair
1 Blue/White
2 Orange/White
3 Green/White
4 Brown/White
Wire
White/Blue
Blue
White/Orange
Orange
White/Green
Green
White/Brown
Brown
The solid colored wire is called “ring”
Language Tip:
and the stripe wire is called "tip". colour (UK) or color (USA)
for the final exam
Documentation:
how to describe the structured cabling for the
assigned network design
Installation technique:
UTP cat. 5 installation: do and don’t
making a UTP patch cable
Mini-glossary
Vocabulary
Document: 1. Topology
FIRST FLOOR
SERVIZI
ACCOGLIENZA
VANO
SCALE
SECOND FLOOR
UFFICI
BIBLIOTECA
SALA
MACCHINE
MAGAZZINI DI CONSERVAZIONE
VANO
SCALE
SALA
CONSULTAZIONE
SALA
PRESTITI
SALA
WIRELESS
THIRD FLOOR
UFFICI O
AMMINISTRATIVO
UFFICIO
PERSONALE
UFFICIO
TECNICO
DIRIGENTE
VANO
SCALE
UFFICIO
ACQUISTI
Document: 2. Cabling layout
PIANO TERRA
EF
PRIMO PIANO
TC01
EF
MC
TC11
UFFICI
BIBLIOTECA
SALA
MACCHINE
MC
SERVIZI
TC21
ACCOGLIENZA
VANO
SCALE
TC03
TC12
VANO
SCALE
TC02
SALA
CONSULTAZIONE
SALA
PRESTITI
SALA
WIRELESS
MAGAZZINI DI CONSERVAZIONE
TC01
MC
LEGENDA
MC
Main cross Connect
EF
Entrance Facility
TC01
Telecommunication Closet PT (Prestiti+Accoglienza)
TC02
Telecommunication Closet PT (Wireless)
TC03
Telecommunication Closet PT (Consultazione)
TC11
Telecommunication Closet PP (Biblioteca)
TC12
Telecommunication Closet PP (Magazzino)
TC21
Telecommunication Closet SP (all the Officies)
Backbone Pathway
Horizontal Pathway
MC
SECONDO PIANO
TC21
UFFICI O
AMMINISTRATIVO
UFFICIO
PERSONALE
UFFICIO
TECNICO
DIRIGENTE
VANO
SCALE
UFFICIO
ACQUISTI
Document: 3. Logic Diagram
EF
MC
TC01
TC02
TC11
TC03
TC12
TC21
TOxx
TOxx
TOxx
TOxx
TOxx
TOxx
TOxx
TOxx
TOxx
TOxx
TOxx
TOxx
TOxx
TOxx
TOxx
TOxx
TOxx
TOxx
Documentation: alternative view
Document: 4. Media 5. Connectors
MEDIA
from
from
from
from
from
from
from
EF
MC
MC
MC
TC01
TC01
TCxx
to
to
to
to
to
to
to
MC
TC01
TC21
TC1x
TC02
TC03
TOxx
multimodal optical fiber
multimodal optical fiber
multimodal optical fiber
UTP cable, cat.5
UTP cable, cat.5
UTP cable, cat.5
UTP cable, cat.5
CONNECTORS
Optical Fiber: ST
UTP: RJ45 (TIA 568B)
Document: 6. Telecommunication Closet
third floor
TC21
FO link
SW 21
second floor
MC
TC11
TC12
modem
SW 11
SW 12
FO link
PP 11
PP 12
PP 21
router
SW P
SW CS
TC01
TC02
TC03
FO link
SW 02
SW 03
SW 01
PP 02
PP 03
PP 01
PP CS
first floor
Document: 7. Cross Connection
position
connection
patch
PP CS-1
EF
modem
PP CS-2
PP 01-1
SW CS-1 uplink to SW01
PP CS-3
PP 01-2
SW CS-2 uplink to SW02
PP CS-4
PP 01-3
SW CS-3 uplink to SW03
PP CS-5
PP 01-4
SW CS-4 uplink to SW04
……
……
PP CS-xx
TOxx
----
modem
----
router
……
description
ISP connection
……
SW CS-xx to a Telcom. Outlet
router
patch from modem to router
SW CS-yy patch from router to switch
Document:
second floor
LEGEND
optical fiber (802.3 ab)
UTP (802.3 ab, Gigabit)
UTP (802.3u Fast Ethernet)
legacy (USB, Lpt, Com)
wireless
8. LAN Diagram
UP
SW 21
FO
prt
uff
TLC
router
modem
Uff. biblio.
SW 11
UP
SW CS
FO
uff
FO
bibli
bibli
SW P
dirig
prn
scan
Magazzino
server
UP
SW 12
mag
Sala prest.
mag
Sala ric.
Sala cons.
SW 01
UP
SW 02
UP
SW 03
FO
pres
prn
pres
prt
uff
prn
mob
Atrio
self
self
pres
AP
mob
pres
pres
UP
Document: 9. Active Devices Specifications
Document: 10. IP address
Installation technique
CAT.5 installation: do and don’t
Please, note the relation
between Categories (USA)
and Classes (Europe) for
UTP cable:
class
A
category
-
B
-
C
3
D
5e
E
6
CAT.5 Installation
CABLE TENSION
DON’T pull cable with excessive force,
as this will alter the cable’s insulation
and transmission properties.
DO pull cable using less than
25 pounds (11,3 Kg) of pullforce.
UNROLLING CABLE
DON’T allow the cable to kink, knot or snag while pulling it off the spool or out
of the box; deforming the pair-twist will alter the performance of the cable.
DO use a cable
pulling accessory.
CAT.5 Installation
RUNNING & SUPPORTING CABLE
DON’T overstress cables
by overloading ….
… and DON’T allow the cable
hook to rip or fray the cable.
minimum distance between
power supply cable and
network cable (parallel
running) is 15 cm.
DO use j-hooks or similar devices designed to support cables.
CAT.5 Installation
RUNNING & SECURING CABLE
DON’T overstress cables by
overtightering cable ties, especially to
the point where crush stress is visible.
DO use tie wraps loosely
on large bundles. (see
also “Using Tie-wraps”)
DO use Velcro tie wraps
to secure large bundles.
USING WIRE CHANNELS
DON’T allow the cable to form
right angles or sharp bends.
DO use sweeping bends.
DO use cable clamps on
individual runs.
CAT.5 Installation
STAPLING CABLE
DON’T squish cables
when securing them.
DO staple by hand, or use
staplers with depth stops.
DO use Velcro to keep cables
from becoming over-cinched.
USING TIE-WRAPS
DON’T chinch the cables tightly, especially
to the point where crush stress is visible.
DO tie-wrap the
bundle loosely.
DO use Velcro as a flexible and reusable alternative to
plastic tie-wraps to keep bundles from cinching.
CAT.5 Installation
REMOVING CABLE JACKET
DON’T remove too much cable jacket.
DO retain cable jacket as close to
the termination point as possible.
MAINTAINING PAIR TWISTS DURING TERMINATION
DON’T untwist the cable pairs more
than 12 mm and DON’T strip cable
jacket back any more than you need to.
DO maintain pair twists to within 12 mm of the
termination point, and the cable jacket is maintained
as close to the terminations as possible.
Making a UTP patch cable
1. Strip off the jacket for about
2,5 cm.
2. Separate out the 4 pairs of
wires
3. Untwist and organize the wires
according to the proper colour
code and flatten the wires
(T568A or T568B).
4. Maintain the colour order
and flatness of the wires,
then clip their length so that
a maximum of 1.2 cm of
untwisted wire is present.
Making a UTP patch cable
5.
6.
7.
8.
Insert ordered wires into RJ-45
plug; make sure jackets are inserted
into plug.
Push the wires in firmly enough to
make sure the conductors are all
visible when you look at the plug
from the end.
Inspect the colour code and jacket
location to be sure they are correct.
Insert the plug firmly into the crimp
tool and crimp down completely.
Fiber Optic
connectors
Mini-Glossary
Vocabulary
ST
(Straight Tip) A fiber-optic connector which uses the
bayonet style coupling.
SC
type of fiber optic connector (Structured Connector)
optical connector with a push-pull mating design.
Commonly referred to as Structured Connectors or
Stick and Click.
UTP
(Unshielded Twisted Pair) a cable that consists of two
or more insulated conductors in which each pair of
conductors are twisted around each other.
RJ45
Registered Jack-45, a telephone connector that holds
up to eight wires, used in Ethernet devices
T568A/B
color coding used for normal network cabling
Vocabulary
OSI
Open Systems Interconnection, the 7-layers suite of
protocols designed by ISO committees to be the
international standard computer network architecture
MDF
Main Distribution frame, a distribution frame on one
part of which terminate the permanent outside lines
entering the central office building and on another part
of which terminate the subscriber line multiple cabling,
trunk multiple cabling, etc.
MMF
Multimode Fiberoptic Cable, fiberoptic cable in which
the signal or light propagates in multiple modes or
paths
Vocabulary
10Base-T
An Institute of Electrical & Electronic Engineers
(IEEE) 802.3 working group designing a
specification for 10 Mbps CSMA/CD baseband local
area networking (LAN) transmission commonly
called Ethernet over twisted-pair wiring.
100Base-T
A specification for 100 Mbps - commonly called
Fast Ethernet over twisted-pair wiring.
1000Base-T
A IEEE 802.3z working group designing a
specification for 1000 Mbps - commonly called
Gigabit Ethernet.
wiring diagram A point to point, highway or airline wiring format
which defines the wiring path and color code of
wire to and from apparatus components.
Vocabulary
wire
A single metallic conductor, usually solid-drawn and
circular in cross section
shielded cable Cable with metal tape shield wrapped around the
insulated conductors.
twisted pair
Insulated wire in which pairs are twisted together.
rack
A structure on which equipment is mounted
patch panel
A generic device that allows for organizing and
connecting the copper and fiber optic cables
power cord
A three-wire (sometimes two-wire) cord used to
make connection with an AC public power supply
Vocabulary
layout
A proposed or actual arrangement or allocation of
equipment
ground
An intentional or accidental connection between an
electric circuit or its housing and the ground (earth)
fiber optics
Thin filaments of glass through which light beams are
transmitted over long distances and which can carry
enormous amounts of data
cable
A single wire or group of individual wires in a single
sheath
cable riser
Cable running vertically in a multi-story building to
serve the upper floors.
Vocabulary
cable run
Conduit used to run cables through a building. Also the
path taken by a cable or group of cables.
cable tray Steel trough erected above equipment racks to support
cable runs in an equipment room
conduit
A device used to hold, organize, and protect electrical
or optical cables
cross connection - A mapping between two channels or paths at a
network device
backbone The main connectivity device of a distributed system.
All systems that have connectivity to the backbone
connect to each other
antenna
A device for transmitting or receiving, or transmitting
and receiving signals
Vocabulary
structured cabling
cable pathway
cable runway
closet
demarcation point
is a set of standards that determine how to wire
a building for data or voice communications
systems providing horizontal, vertical and
backbone pathways from your data room to
your workstations
o Ladder Rack, horizontal, vertical and
backbone pathways for your computer room,
telecommunications room and data center
a cabinet or enclosed recess for
telecommunications devices
the location within a building where the lines
from the telephone company connect to the
customer's lines.
Vocabulary
interbuilding
intrabuilding
outlet
telecommunication outlet
jack
horizonthal pathway
entrance facility
Vocabulary
building backbone
campus backbone
building distributor
floor distributor
campus distributor
cross connect
main cross connect
Vocabulary
intermediate cross connect
transition point
patch cord