Structured Cabling Stud

7/30/2019 Structured Cabling Stud

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SCS 3004SCS 3004Structured Cabling SystemStructured Cabling System

Dr. Ajantha AtukoraleUCSC

Thanks to: Dexter de LimaNetwork Systems Engineer

Enterprise Technology (Pvt) Ltd.


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people make the difference

Cabling SystemsCabling Systems

Proprietary Cabling System:

Has specific design parameters and is dependent onnetwork technology and/or vendor equipment which

requires specific connectors and cable

Structured Cabling System:

Has universal cabling design which will support all LAN

protocols and traditional telephony


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Structured Cabling SystemStructured Cabling System


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Telephone System Cable PlantTelephone System Cable Plant

X

Main Distribution

Frame (MDF)

Primary Cable

Cross Connection

Cabinet (CCC)

Secondary Cable

Distribution Point

(DP)

Telephone

To other

CCCs

To other

DPs

Exchange

Trunk Lines

to other

Exchanges

Drop Wire

To otherTelephones


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SCSSCS--Ethernet ApplicationEthernet Application

Patch Panel

Horizontal Cable

Information Outlet

Network Closet

Ethernet Switch

Patch cord

Fly CordPC


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SCSSCS Voice ApplicationVoice Application

Information Outlet

Network Closet

PBX


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SCSSCS RSRS--232 Application232 Application

Horizontal Cable

Serial (RS-232) to UTP Adaptor

Mini Computer

Terminal


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Benefits of a Structured CablingBenefits of a Structured Cabling

Structured Cabling makes it easy to add, move, change and

re-site individual employees or complete department's

communications equipment.

Support data and traditional voice; no need for multiple

cabling systems in a building

No downtime when reconnecting equipment Multiple conventional cable plants are expensive to maintain

and upgrade compared to a Structured Cabling System

Independent of protocols and networking technologies Covers current & future requirements

Allows total flexibility


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Structured Cable System DesignStructured Cable System Design


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Design ConceptDesign Concept HORIZONTAL CABLINGHorizontal Cabling is the sub-section of

the cabling system from the workstationoutlet to the FD/IDF.

BACKBONEBackbone cabling provides the main feeder cable in

a system. It can be either 'vertical style' in which it

runs vertically between floors in a building,

connecting FD/IDF's to the BD, or 'campus style' in

which it connects several BD's in separate buildings

in one centralized location.

FLOOR DISTRIBUTOR (FD) OR

INTERMEDIATE DISTRIBUTION FRAME

(IDF)The FD/IDF accommodates all of the cross connect

facilities to interconnect work stations to active LAN

equipment (also located in the FD/IDF enclosure),and backbone cabling to centralized processing

equipment installed elsewhere.

BUILDING DISTRIBUTOR (BD) OR MAIN

DISTRIBUTION FRAME (MDF)

The BD, provides a means of centralized processingand switching systems to the vertical backbone cabling.


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Building Cable SystemBuilding Cable System

HORIZONTAL CABLINGHorizontal Cabling begins where the user plugs a terminal in and ends at

a centrally located point called a Floor Distributor (FD) or Intermediate

Distribution Frame (IDF). Distribution Frames should be located so that

horizontal UTP cable length is limited to 90 meter or less to provide

compatibility with high-speed LAN operation. When horizontal cabling is

properly designed, each office interface is accessible from an appropriate

distribution frame. The cable run should be free of bridges, taps and

splices.

FLOOR DISTRIBUTOR OR INTERMEDIATE

DISTRIBUTION FRAMEEach distribution frame should be located so that the

horizontal cabling length for UTP is limited to 90 meter

to ensure compatibility with high-speed LAN operation.

Sufficient cable management is critical for long termmaintainability.

BUILDING DISTRIBUTOR (BD) OR

MAIN DISTRIBUTION FRAME (MDF)The BD/MDF provides a means of cross-connecting horizontal

channels to equipment ports or trunk channels. The ports of each

piece of system equipment need to be converted to the cross

connect products mounted in the distribution frame. System

Connections, Voice and LAN can be incorporated into the BD/MDF.

BACKBONEBackbone cabling is the main trunk cable from which all

connections are made. Backbone cabling can be either

campus style, in which it connects several buildings, or

it can be run vertically between floors to connect several

FD/IDF or the BD/MDF. Molex Premise Networks

recommends the use of Optical Fiber cable, although

twisted pair, or a combination of both, is acceptable.

Applications include baseband LAN, broadband LANand multiplexed channels.

UTP

UTP

Fiber


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Elements of Structured CablingElements of Structured CablingSystemSystem


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WHY PEOPLE NEED STRUCTURED CABLING

UTPCAT 3

CAT 5

CAT 5e

UTPCAT 6

CAT 6e

CAT 7

STPCAT 5

CAT 5e

CAT 6/7

UTP CablesUTP Cables


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Available inAvailable in

configurationsconfigurations

from 24 to 96 portfrom 24 to 96 port

Large labelingLarge labeling

areas for panelareas for panelidentificationidentification

Eight moduleEight module

harmonicas snap in forharmonicas snap in for

easy servicingeasy servicing

UTP Patch PanelUTP Patch Panel


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Available in configurationsAvailable in configurations

from 1 to 6 port UK, US, Europe, Flashfrom 1 to 6 port UK, US, Europe, Flash

and Surface mount Type wall outletsand Surface mount Type wall outlets

UTP Wall OutletUTP Wall Outlet


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Available in configurationsAvailable in configurations

from 0.5m to 6m and long reachfrom 0.5m to 6m and long reach

once from 6m to 15 monce from 6m to 15 m

Adaptors for all typeAdaptors for all type

of applicationsof applications

UTP Patch Cord & AdaptorsUTP Patch Cord & Adaptors


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Ring runs & CoversRing runs & Covers Cable organizer panels and ringsCable organizer panels and ringsStrain relief panelsStrain relief panels

Cable Management PanelCable Management Panel


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ToolsTools

Cable TesterRound Wire &

Cable CutterCrimping tool -Without Ratchet

Crimping tool -

With Ratchet

Punch Down Tool Cable & Wire Stripper


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Structured Cabling SystemStructured Cabling SystemStandards & TerminologyStandards & Terminology


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Standard OrganizationsStandard Organizations

IEEE Institution of Electrical and Electronic Engineers

ISO International Standards Organization

ANSI/EIA/TIA American National Standards Institute /

Electrical Industries Association/Telecommunication

Industries Association

Consortium of manufacturers, vendors, users and other

interested parties responsible for the family of standardsassociated with design, installation and use of structured Cabling

Systems.


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IEEE StandardsIEEE Standards

DistanceMediaData Rate

550 m

5 km

50 m MM Fiber

9/10 m SM Fiber

1000 Mbps1000 Base-LX

550 m

10 km

62.5/50 m MM Fiber

9/10 m SM Fiber

1000 Mbps1000 Base-LH

1000 Mbps

1000 Mbps

1000 Mbps

100 Mbps

100 Mbps

10 Mbps

10 Mbps

10 Mbps

70 km

100 km

9/10 m SM Fiber

Dispersion Shifted Fiber

1000 Base-ZX

220 m

550 m

62.5 m MM Fiber

50 m MM Fiber

1000 Base-SX

100 mCopper UTP1000 Base-TX

2 km

10 km

62.5/50 m MM Fiber

9/10 m SM Fiber

100 Base-FX

100 mCopper UTP100 Base-TX

100 mCopper UTP10 Base-T

500 mCopper Coaxial10 Base-5

200 mCopper Coaxial10 Base-2


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ISO/IEC 11801ISO/IEC 11801

International Standards Organization

ISO/IEC 11801 : IT- Cabling for customer premise ISO/IEC 14763-1 : Administration, documentation, records

ISO/IEC 14763-2 : Planning and Installation practices

ISO/IEC 14763-3 : Testing of optical fiber cabling IEC 61935-1 : Testing of copper cabling


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ANSI/TIA/EIAANSI/TIA/EIA

American National Standards Institute / Telecommunications Industry Association / ElectronicIndustries Association

ANSI/TIA/EIA 568ANSI/TIA/EIA 568--B SeriesB Series

ANSI/TIA/EIA 568-B.1 Commercial Building Telecommunications Cabling Standard

ANSI/TIA/EIA 568-B.2 100 Ohm Twisted Pair Cabling Standard

ANSI/TIA/EIA 568-B.3 Optical Fiber Standards

Also incorporates & refines

TIA/EIA TSB67 - - Performance Specification for field testing UTP.

TIA/EIA TSB72 - Centralized Optical Fiber Cabling Guidelines

TIA/EIA TSB75 Open Office Guidelines ANSI/TIA/EIA-568-A-1 - Delay & Delay Skew

ANSI/TIA/EIA-568-A-2 - Misc. changes

ANSI/TIA/EIA-568-A-3 - Hybrid and Bundled Cables

ANSI/TIA/EIA-568-A-4 - Patch Cords

ANSI/TIA/EIA-568-A-5 - Category 5e

TIA/EIA/IS-729 Technical Specifications for 100 Ohm Screened Twisted-PairCabling

ANSI/TIA/EIA 569-A - Commercial Building Standard for Telecommunication Pathways andSpaces.

ANSI/ TIA/EIA 570-A - Residential and Light Commercial Telecommunication WiringStandard.

ANSI/TIA/EIA 606 - 1993 Administration of Telecommunication Infrastructure ofCommercial Buildings.

ANSI/TIA/EIA 607 - 1994 Grounding and Bonding.


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Recommended LengthsRecommended Lengths

A + C = 10m (combined)

B = 90m (Permanent Link) D = 100m (Channel Link)


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UTP Color CodingUTP Color Coding

To distinguish between pairs, they are colored

each pair has designated Tip and Ring

conductors. Pair 1 can therefore be designated

T1 and R1. Both UTP & STP conform to this

standard

T1 - White Blue/Blue White - R1

T2 - White Orange/Orange White - R2

T3 - White Green/Green White - R3

T4 - White Brown/Brown White - R4


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Wiring SequencesWiring Sequences

568A

International ISDN standard

Pairs 2 & 3 are transposedfrom 568B.

Pairs 1 & 2 USOC compatible

568B

Most widely specified

sequence. Also Known as258A

Same as 568A but pairs 2 & 3

are transposed

11 22 33 44 55 66 77 88

T3T3 R3R3 T2T2 R2R2 T4T4 R4R4R1R1 T1T1

11 22 33 44 55 66 77 88

T2T2 R2R2 T3T3 R3R3 T4T4 R4R4R1R1 T1T1


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Wiring SequencesWiring Sequences

These are the pin-out diagramsfor straight through andcrossover UTP Ethernet cables.

The TX (transmitter) pins areconnected to corresponding RX(receiver) pins, with plus toplus and minus to minus. A

coss-over cable must be usedto connect units with identicalinterfaces.When straight-through cablesare used to connect Ethernetdevices, one of the two unitsmust, in effect, perform thecross-over function.


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Wiring Sequences (100 Base TX Duplex)Wiring Sequences (100 Base TX Duplex)

NoteNote: Only pairs 22 and 33 are used for

Standard Ethernet wiring. Pairs 11 and

44 can be used for other purposes

such as telephones or even a secondseparate, complete Ethernet

connection.


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Unshielded Twisted PairUnshielded Twisted PairInstallation PracticesInstallation Practices


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Types of PathwaysTypes of Pathways

Conduit Used in environments where required by code or maximum protection of

the cable is desired or required. Typically constructed of one of the

following: Rigid metal conduit

Rigid PVC

Flexible

Under Floor Under floor duct is either sealed in slab floor or in fill placed on top of

slab (This added thickness to floor).

Cellular floor requires distribution cells located on lower level of system.Provides service to workstations. Separated by power andcommunication.

Raised floor consists of steel footings holding pedestals which supportthe raised floor.

Suspended Ceiling Most common and cost effective pathway for running cable.


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Cable TrayCable Tray

Start Laying cables to the side of the tray.

Separate fiber from copper Tie Fiber to underside

of tray if practical

ff


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Installing in ConduitInstalling in Conduit

Conduit comes in several types and sizes including rigid metal, PVCand fiberglass conduit, or flexible PVC conduit.

Using flexible conduit of extended length because it has potential forabrasion damage to cable jacketing. Can be used for short lengths.

Use conduit in environments where the cable needs protection fromincidental damage, visual exposure is a consideration, access byunauthorized individuals is possible or building/safety codes requireit.

Maximum continuous straight length, (without access), should notexceed 30 meter.

No more than two 90, 180 total bends between each pull box. (Athird bend is allowed if the run is less than 10 meter

l k th diff


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Bend Radii of CablesBend Radii of Cables

4 Pair twisted pair cable

minimum bend radius is 4 times the diameter of the cable

Multi-pair twisted pair cable

minimum bend radius is 10 times the diameter of the cable

Optical Fiber cable

minimum bend radius is 10 times the diameter of the cable Consult with cable manufacturers & comply with their specifications

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Under floorUnder floor

Under floor duct is either sealed in slab floor or in fill

placed on top of slab (This added thickness to floor).

Cellular floor requires distribution cells located on

lower level of system. Provides service to

workstations. Separated by power andcommunication.

Raised floor consists of steel footings holding

pedestals which support the raised floor.

l k th diff


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Suspended CeilingSuspended Ceiling

Most common and cost effective pathway for

running cable.

Cable must be supported on 1.2 to 1.5 m

(4 to 5 feet) centers.

DO NOT USE CEILING SUPPORT SYSTEM. Max 24 -32 cables per catenary strand.

Quantities of forty eight (48) or more, four pair

cables need to be supported in heavier cable trays.

l k th diff


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Documents

Structured Cabling Stud