structured cabling new
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CLIL Activity – I.T.I.S. “C. Zuccante” 5ISB – School Year 2005/06
A. Memo
STRUCTURED CABLING
Final Exam Compendium
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
1. Structured cabling systems
2. Terminology3. Passive Devices4. Cross Connect
technologyI. DocumentationII. Installation techniqueIII. Mini-glossaryfo
r th
e
fin
al exam
Structured Cabling Systems
Structured cabling is a method for
creating an organized cabling system
that can be easily understood by
installers ,
network administrators , and any other
technicians 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
Antenna EntranceTelecommunications Room/Closet
Tie PathwayBackbone Pathway
Equipment Room/Closet
Backbone Pathways
Horizontal PathwayEntrance Room/Closet
Main Terminal Space(Entrance Facility)
Interbuilding Backbone
Work AreaAlternate Entrance
Telecommunications Room/Closet
Demarcation Point
Telecommunications Outlet
Horizontal Pathway
Subsystems of Structured Cabling
Interbuilding Backbone
Alternate Entrance
Subsystems of Structured Cabling
dorsale tra edifici
accesso alternativo
Demarcation Pointpunto di demarcazione
between outside service provider cables and customer cables
Work Area
Telecommunications Outlet
Subsystems of Structured Cabling
area di lavoro
presa di rete
Horizontal PathwayEntrance Room / Closet
Main Terminal Space(Entrance Facility)
Telecommunications Room/Closet
Subsystems of Structured Cabling
canalizzazione orizzontale o di piano
stanza / armadio d’accesso principale
stanza / armadiodi permutazione di piano
Equipment Room/Closetstanza dei dispositivi
(interconnessione interbuilding-intrabuilding)
Tie Pathway
Backbone Pathway Backbone Pathways
Subsystems of Structured Cabling
canalizzazione di dorsale o canalizzazione verticale
o canalizzazione di edificio
canala passacavi
ingresso d’antennaAntenna Entrance
Subsystems of Structured Cabling
Subsystems of Structured Cablingother diagram example
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Building A
Building B
Building C
Telecommunication Outlet
Horizontal Cabling
Floor Distributor / Telecommunicati
on Closet
Building Distributor /
Telecommunication Closet
Building Backbone
Campus Backbone
Subsystems of Structured Cablinga larger example
Campus Distributor /
Telecommunication Closet
campus comprensori
o
Campus Distributor / Main
cross ConnectBuilding Distributor / Intermediate cross Connect
Floor Distributor / Horizontal cross Connect
Campus Backbone
Building backbone or vertical cabling
horizontal cabling
Telecommunication Outlets
optional cabling (not allowed)
optional Transition Point
Telecommunication Closets
Cabling logical diagram
Campus Equipment Room
more complex than Telecommunication Closet
to Building Distributor / Intermediate cross Connect
Main cross Connect
Cables from Service Provider
Tie Pathway for cables to electronic
devices
Electronic Devices
Demarcation Point
plywood panel
Telecommunications Room
Distribution Rack
Patch Panel (front)
Telecommunication Closet
RacewaysA 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 with telephonic
cross-connect
Panel for UTP cables with 16 RJ45
Panel for optical fiber with 16 SC connectors
Patch Cord
Optical Patch Cord
Telecommunication Closet Telecommunicat
ion Outlet
Patch panel and Patch Cord
Data
Voice
Horizontal Cabling
Work Area
Telecommunications Closet
horizontal cabling 90 m
I1 + I2 + I3 = 10 m
I1I3
I2I3
HC
= cross-connect
= telecommunication outlet= transition point
I1 = work area cable
I2 = patch cord
I3 = equipment cable
Telecommunication Outletfour pairs cable directly
connected on RJ45 socket
four pairs cable connected on plug
RJ45
adapter
•work area
•at least two outlet
•about 10 m2
Work AreaCable
•patch
•max 90 m
Working Area
RJ45: socket and plug
RJ45Wall Socket (receptacle ) or Telecommunication
Outlet
RJ45 jack or plug (male)
TIA/EIA StandardALTERNATE (T568A) PREFER (T568B)
PAIR 2
PAIR 1 PAIR 4PAIR 3
PAIR 3
PAIR 2 PAIR 1 PAIR 4
JACK POSITIONS
1 2 3 4 5 6 7 8
JACK POSITIONS
W G W BL W O W BRG O BL BR
1 2 3 4 5 6 7 8W O W BL W G W
BRO G BL BR
UTP cable
Pair
2 Orange/White
1 Blue/White
3 Green/White
4 Brown/White
Wire
White/Blue
Blue
White/OrangeOrange
White/Green
Green
White/Brown
Brown
The solid colored wire is called “ring” and the stripe wire is called "tip".
Language Tip: colour (UK) or color (USA)
Language 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’tmaking a UTP patch cable
Mini-glossaryVocabulary
Document: 1. Topology
SERVIZIVANO SCALE
ACCOGLIENZA
SALA CONSULTAZIONE
SALA PRESTITI
SALA WIRELESS
FIRST FLOOR
UFFICI BIBLIOTECA
VANO SCALE
SALA MACCHINE
SECOND FLOOR
MAGAZZINI DI CONSERVAZIONE
UFFICI O AMMINISTRATIVO
VANO SCALE
UFFICIO TECNICO
THIRD FLOOR
UFFICIO PERSONALE
UFFICIO ACQUISTIDIRIGENTE
Document: 2. Cabling layout
SERVIZIVANO SCALE
ACCOGLIENZA
SALA CONSULTAZIONE
SALA PRESTITI
SALA WIRELESS
PIANO TERRA
TC01
MC
TC02TC03
EF
MC
UFFICI BIBLIOTECA
VANO SCALE
SALA MACCHINE
PRIMO PIANO
MAGAZZINI DI CONSERVAZIONE
UFFICI O AMMINISTRATIVO
VANO SCALE
UFFICIO TECNICO
SECONDO PIANO
UFFICIO PERSONALE
UFFICIO ACQUISTIDIRIGENTE
MCTC11
TC12
TC21
TC01EF
TC21
MCLEGENDA
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
Document: 3. Logic Diagram
MCEF
TC01
TC02 TC03 TC11 TC12 TC21
TOxxTOxxTOxxTOxx TOxxTOxx
TOxxTOxxTOxxTOxx TOxxTOxx
TOxxTOxxTOxxTOxx TOxxTOxx
Documentation: alternative view
Document: 4. Media 5. Connectors
MEDIA
from EF to MC multimodal optical fiber
from MC to TC01 multimodal optical fiber
from MC to TC21 multimodal optical fiber
from MC to TC1x UTP cable, cat.5from TC01 to TC02 UTP cable, cat.5from TC01 to TC03 UTP cable, cat.5from TCxx to TOxx UTP cable, cat.5
CONNECTORS
Optical Fiber: STUTP: RJ45 (TIA 568B)
Document: 6. Telecommunication Closet
modemFO
linkrouter
SW P
SW CS
PP CS
MC
FO linkSW 01
PP 01
TC01
SW 02
PP 02
TC02
FO linkSW 21
PP 21
TC21
SW 03
PP 03
TC03
SW 11
PP 11
TC11
SW 12
PP 12
TC12
third floor
second floor
first floor
Document: 7. Cross Connection
position connection
patch description
PP CS-1 EF modem ISP connection
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 SW CS-xx
to a Telcom. Outlet
---- modem router patch from modem to router
---- router SW CS-yy
patch from router to switch
Document: 8. LAN Diagram SW 21
FO
prt uff uff
UP
second floor
modem router
SW P
server
FO
TLC
SW 02
prt uff
AP
UP
Sala ric.
mobmob
SW 01
pres pres
UP
Sala prest.
FO
prn prn
Atrio
self
self
SW 03
pres pres
UP
Sala cons.
pres
SW 11
bibli dirig
UP
Uff. biblio.
bibli prn
scan
SW 12
mag mag
UP
Magazzino
SW CS
FO
LEGENDoptical fiber (802.3 ab)UTP (802.3 ab, Gigabit)UTP (802.3u Fast Ethernet)legacy (USB, Lpt, Com)wireless
LEGENDoptical fiber (802.3 ab)UTP (802.3 ab, Gigabit)UTP (802.3u Fast Ethernet)legacy (USB, Lpt, Com)wireless
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:
A -
B -
C 3
D 5e
E 6
class category
CAT.5 Installation
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 pull-force.
CABLE TENSION
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.
DO use j-hooks or similar devices designed to support cables.
minimum distance between power supply cable and network cable (parallel
running) is 15 cm.
CAT.5 Installation
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.
DO use cable clamps on individual runs.
RUNNING & SECURING CABLE
USING WIRE CHANNELS
DO use sweeping bends.DON’T allow the cable to form right angles or sharp bends.
CAT.5 InstallationSTAPLING CABLE
USING TIE-WRAPS
DO staple by hand, or use staplers with depth stops.
DON’T squish cables when securing them.
DO use Velcro to keep cables from becoming over-cinched.
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 InstallationREMOVING 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 cable1. 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
6. Push the wires in firmly enough to make sure the conductors are all visible when you look at the plug from the end.
7. Inspect the colour code and jacket location to be sure they are correct.
8. Insert the plug firmly into the crimp tool and crimp down completely.
5. Insert ordered wires into RJ-45 plug; make sure jackets are inserted into plug.
Fiber Opticconnectors
Mini-Glossary
VocabularyST (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 is a set of standards that determine how to wire a building for data or voice communications
cable pathway systems providing horizontal, vertical and backbone pathways from your data room to your workstations
cable runway o Ladder Rack, horizontal, vertical and backbone pathways for your computer room, telecommunications room and data center
closet a cabinet or enclosed recess for telecommunications devices
demarcation point 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