structured cabling new

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


dorsale tra edifici

accesso alternativo

Demarcation Pointpunto di demarcazione

between outside service provider cables and customer cables

Work Area

Telecommunications Outlet


area di lavoro

presa di rete

Horizontal PathwayEntrance Room / Closet

Main Terminal Space(Entrance Facility)

Telecommunications Room/Closet


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


canalizzazione di dorsale o canalizzazione verticale

o canalizzazione di edificio

canala passacavi

ingresso d’antennaAntenna Entrance


Subsystems of Structured Cablingother diagram example

?

?

?

?

?

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 /


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)

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



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-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

structured cabling new

Documents

telecommunication closet pt

main cross connect

telecommunication closet pp

dont overstress cables

vano scale

pp cs

structured cabling

entrance facility