4 Structure Cabling System Design

1

STRUCTURE CABLING STRUCTURE CABLING SYSTEM DESIGNSYSTEM DESIGN

2

Designing Premises Cabling Systems

3

Structured Cabling Systems

Network Specific Cabling SystemA specified cabling system designed to beinstalled according to a manufacturer's ornetwork’s standard set of rules. i.e.. IBMCabling Systems and IEEE 802.3, 10 Base 2

Open Cabling SystemA generic telecommunications cabling systemfor commercial buildings that will support amultiproduct, multivendor environment

4

Cabling Systems DesignDecision Tree

Influence Identify

Applications

Software

Hardware

Network Platform

Mid-levelManagement

(Performance)Physical Plant

ExecutiveManagement

(Cost)

5

DNADistributed Network Architecture

Equipment Room/Entrance Facility

TelecommunicationsCloset


Work Area

Work Area

Work Area

6


Telecommunications Closet

Equipment Room

Server


Max 90 mM

ax 5

00 m

(fib

er)

7

DNAAdvantages/Disadvantages

• Advantages− Ideal for large buildings and multi-building campuses− Based upon TIA/EIA & ISO Standard Architecture− Low fiber count backbones

• Disadvantages− Electronics are distributed − MAC’s are more complicated− Administration time and costs are high− Port utilization and efficiency typically poor

8

CNACentralized Network Architecture

Centralized Cross-Connect/Electronics

Pull-Through Cables

Splice or Interconnect

Single User or

Zone

9


Equipment Room

Server

TelecommunicationsCloset ?

Interconnect or splice

Max 300 m total (fiber)

10

CNAAdvantages/Disadvantages

• Advantages− MAC’s are much easier and less costly− Administration time and costs are lower− Increased port utilization and efficiency− Based upon TIA/EIA TSB-72− Less space utilized in Telecommunications closets− Quick path for network migration− Fewer points of failure

• Disadvantages− Initial installation costs− Higher cost of optical electronics− Perceived single point of failure

11

Home Run Cabling


Single-UserCable & Outlets

•Splice or Pull Thru for CNA

•Cross Connect and Electronics for DNA

12

Zone Distribution Cabling

MUO

CP

13

Zone DistributionAdvantages/Disadvantages

• Advantages− Reduced costs over life of cabling due to less re-cabling

− cabling from TC to distribution point stays permanent

− Faster MACs− Less office disruption− Less down-time and productivity loss during MACs

• Disadvantages− Initial installation costs− Perceived lower performance due to additional connection

point

14

Architectures


DNAor

CNAZone

Home Run

Zone

15

MHz vs. Mbps

100 MHz is NOT the same as 100 Mbps

• Bandwidth (MHz) is:− The frequency range across which components and systems are

specified− Not based on a particular application or data rate

• Data Rate (Mbps) is:− How fast you can pump data through a system with a given

bandwidth− Dependent on the application and encoding scheme

16

MHz vs. Mbps

Frequency = 1 Car /sec (Hertz)Transferred Data = 1 Bits /sec (Bps)A B




17

Media Options

• Unshielded Twisted Pair− Categories 3/4/5/6

• Shielded Twisted Pair − Categories 3/4/5/6/7− FTP, S-FTP or PiMF

• Optical fiber− Multi-mode

− 62.5/125 or 50/125− Singlemode

18

Evolving HorizontalPlatform Cabling Platforms

20001996199219881984

1000

100

10

1

1000

100

10

1

155 Mbps ATM

100BASE-Tx

16 MbpsTokenRing

10BASE-T

CAT4CAT4 CAT5CAT5CAT3CAT3

MbpsMHzData RateBandwidth

?

622 Mbps ATM ?

1000BASE-T

1.2 Gbps ATM ?

CAT XCAT X

19

Evolving BackboneNetwork Cabling Platforms

10BASE-F

FDDI155 ATMFastEthernet

622 ATM

1000 Base-F1.2 Gpbs ATM

20001997199419881984

?

500

160

10,000

1,000

100

10

Mb/sMHz•kmData RateBandwidth

?2.5 GpbsATM

1986

SM

MM

20

Media Selection Criteria

UTP

OpticalFiber

STP

Good Good Good Good Best Good

Better Good Better Better Better Better

Best Best Best Best Good Best

EMC Distance Bandwidth NetworksSupported

InitialCost

Long TermCost

21

Standards Bodies

TIA/EIATIA/EIA--569569AS 3084AS 3084 CSA T 530CSA T 530

EN50173EN50173 ISO/IEC 11801ISO/IEC 11801 CSA T 527CSA T 527TIA/EIATIA/EIA--568A568AAS/NZS 3080AS/NZS 3080

EIAEIATIATIA

CENELECCENELEC IECIEC CSACSAANSIANSIAS/NZSAS/NZS

ISOISO

TIA/EIATIA/EIA--606606AS/NZS 3085AS/NZS 3085 CSA T 529CSA T 529

TIA/EIATIA/EIA--607607 CSA T 528CSA T 528

22

Star Topology

MC/CD

HC/FD

IC/BD(optional)

Horizontal CablingBackbone Cabling Work area

23

Cross-Connects/Distributors

Main Cross-Connect/Campus Distributor

IntermediateCross-Connect/

Building Distributor

IntermediateCross-Connect/

Building Distributor

HorizontalCross-Connect/

Floor Distributor

HorizontalCross-Connect/

Floor Distributor

24

Elements/Sub-Systems

• Work Area• Horizontal Cabling• Telecommunications Closet• Backbone Cabling• Equipment Room• Entrance Facility• Administration

25

Work Area, Horizontal Cabling, Telecommunications Closet

26

Backbone Cabling

27

Equipment Room

28

Entrance Facilities

29

Elements/Sub-Systems - Administration

• Work Area• Horizontal Cabling• Telecommunications Closet• Backbone Cabling• Equipment Room• Entrance Facility• Administration

30

Telecommunications OutletPlacement Requirements

TC

X

WA

HC/FD

1m/3 ft.

31

Telecommunications ClosetPlacement Requirements

1000 m2/10,000 ft2

32

Telecommunications ClosetDesign Considerations

• Size• Clearances• Floor Loading• Closet

Penetrations• Security• Fire Protection• Environmental

Control

• Lighting• AC Power• Physical

Construction• Dust Protection• Finish Color• Grounding

33

Equipment RoomPlacement Requirements

HALLWAY ER

TC TC

TC

MPOP

ELEV.SHAFT

LEC

34

Equipment RoomDesign Considerations

• Size• Clearances• Floor Loading• Closet Penetrations• Security• Fire Protection• Environmental

Control• Lighting

• AC Power• Physical

Construction• Dust Protection• Finish Color• Grounding

• Water Infiltration• EMI Protection• Noise

35

Horizontal Cabling System

36

TIA/EIA 568A SubTIA/EIA 568A Sub--systemsystem

HORIZONTAL CABLINGHORIZONTAL CABLING

37

Horizontal Cabling

100(120)Ω CAT 3

100(120)Ω CAT 5150Ω STP-A

62.5(50)/125µ FIBER

WA

WA

HC/FD

TP

TP

38

Horizontal Media Considerations

Consider bandwidth, architecture and budget for this one.

UTP/FTP

Shielded Twisted Pair

fiber

39

Horizontal Media

MediaType

ConductorConstruction Bandwidth Connector

Type

OPTICALFIBER

up to300 MHz

4-PositionData

up to100 MHz

24 AWG Solid(patch - stranded)

up to16 MHz

8-PositionIDC

up to500 MHz-km

62.5/125µmMulti-mode

Duplex568SC

150Ω STP-A


22 AWG Solid(patch - 26 AWG

stranded)

8-PositionIDC

100Ω/120ΩCAT 3 UTP


50/125µmMulti-mode SC-D

Enhanced CAT 5 CAT6 (250 MHz) CAT 7 (600 MHz)

40

Horizontal Cabling

CONNECTORS UTP/FTP

CAT 3

CAT 4

CAT 5

8- POSITION MODULAR PLUG

8-POSITIONMODULARJACK T 568 A

T 568 B(AT&T 258A)

1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8

PAIR 2 PAIR 1 PAIR 4

PAIR 3

PAIR 3 PAIR 1 PAIR 4

PAIR 2

12345678

T3 (WHT/GRN)R3 (GRN/ WHT)T2 (WHT/ORG)R1 (BLU/ WHT)T1 (WHT/BLU)R2 (ORG/WHT)T4 (WHT/BRN)R4 (BRN/ WHT)

12345678

T2 (WHT/ORG)R2 (ORG/ WHT)T3 (WHT/GRN)R1 (BLU/ WHT)T1 (WHT/BLU)R3 (GRN/WHT)T4 (WHT/BRN)R4 (BRN/ WHT)

41

Horizontal Cabling Horizontal Cabling

CONNECTORS FIBER OPTICCONNECTORS FIBER OPTIC

62.5/125 FIBER

568 SC BULKHEADCONNECTOR

DUPLEX SCCONNECTORS

42

Horizontal Bandwidth and Media

Network Type

10 BASE-T

100BASE-TX

155 Mbps ATM

1000BASE-T

1.2 Gbps ATM

Token Ring

CAT 3

CAT 5

CAT 5

CAT 3

MinimumMedia

CAT 5?

?

SignalingBandwidth

10 MHz

4MHz/16MHz

31.25 MHz

77.5 MHz

62.5 MHz

?

2

2

2

2

CablePairs

4

?

43

Horizontal Distances

90 m 3 m6 m

44

Horizontal Pathways

UTP/FTP INSTALLATION PRACTICE

Cable, connectors, and patch cords of same category or higher.Untwist of cable pairs <13 mm (0.5 in.) for category 5 applications.Maximum pulling tension for 4 pair 24 AWG (0.5 mm)

should not exceed 110 N (25 lbf) .Elimination of cable stress caused by tension in suspended cable runs and tight clinched cable bundles (cable ties).Bend radius > four times the cable diameter for 4 pair UTP and > ten times the cable diameter for multi-pr UTP cable.FTP cable shield must be grounded to the Telecommunication Grounding Busbar.

45

Horizontal Pathways

FIBER OPTIC INSTALLATION PRACTICE

Maximum Pulling Force Should Be Marked onCable Reel by ManufacturerAverage pull tension is 200 lbs.No less than 20 times the diameter when pulling cableNo less than 10 times the diameter when placedCabling Must Be PolarizedCabling Shall Be Tested for Polarity andAttenuation

46

Telecommunications Outlet Elevation

47

AMP Angled Faceplate With Shutter Cover (UK version)

48

Telecommunications Outlet Pathway Elevation

49

TYPICAL FLOOR LAYOUTTYPICAL FLOOR LAYOUTTelecommunications Closet Telecommunications Closet

75 mm Conduit

(3")

75 mmConduit

(3")

Telecommunications Closet C

TelecommunicationsCloset B

Area B530 m (5,300) ft

Area C530 m (5,300) ft

Core Area

TelecommunicationsCloset A

Area A800 m (8,000) ft

50


TYPICAL CLOSET DESIGN100mm(4") 25-100mm

(1-3") Max

ClosetInterconnectingConduit(Fire Stopped)

Typical ConduitSleeve ThroughFloor

Ladder Rack (Above Relay Racks)

DistributionFacilitiesto Offices900mm (36")x1800mm (72") Door

With Lock Externally Opened Only

EquipmentPower

PowerBar

Rear

InstrumentPower

PowerBar

EquipmentPower

19" EquipmentRack

19" EquipmentRackCeiling

FluorescentFixture

1m (39" Plus) Aisle(Equipment Repairand Install)

20mm (3/4 )PlywoodBackboard

Ceiling LevelLadder Rack

CeilingFluorescentFixture

CeilingFluorescentFixture

20mm (3/4 )PlywoodBackboard

DistributionFacilitiesto Office

Ceiling LevelLadder Rack

Sleeves(Minimum)

3x100mm (4")

Rear

Front

Front

51

Telecommunications Closet Elevation

52

Telecommunications Closet Rack Elevation

5331-08-99

19” Rack Cabinets Layout - LAN Room 1With Full Load Points

Nanyang Primary School

RACK 1

1RU2RU3RU4RU5RU6RU7RU8RU9RU10RU11RU12RU13RU14RU15RU16RU17RU18RU19RU20RU21RU22RU23RU24RU25RU26RU27RU28RU29RU30RU31RU32RU33RU34RU35RU36RU37RU38RU39RU40RU41RU42RU

1 Rack Unit (RU) = 44.45 mm (1.75”)

APC

Unit Wt(Kg) / Unit WeightFTP Points per Rack 115 0 0Jack Panel 8 1 8Cable Management 10 1 10Fiber Junction 2 23COM CB3500 1 13.2 13.23COM SSII 3300 5 4.4 22SU30005U (UPS) 2 58.6 117.219" Rack 1 48 48Total Weight - - 220.4

3000

L1 R1- UPS2Rack1

L1 R1- CS01L1 R1 -ES01L1 R1 -ES02L1 R1 -ES03L1 R1 -ES04L1 R1 -ES05

UPS to E quipm ent

Battery Pack

L1R1-BP1

L1R1-UPS2

L1R1-ES01

L1R1-ES04

L1R1-ES03

L1R1-ES02

L1R1P05

L1R1P02

L1R1P03L1R1P04

L1R1P01

L1R1-CS01

L1R1P06

L1R1P07L1R1P08

APC

3000

Battery Pack

L1R1-BP2

L1R1-UPS1

L1R1-ES05

55

Horizontal Cabling Floorplan

56

CABLE LENGTH CALCULATIONCABLE LENGTH CALCULATIONHorizontal ExerciseHorizontal Exercise

LL

SL

2X # WS( + 15%)SL + LL+ 4CH

57

Project Name [Company Name][Address 1][Address 2]

Contact Name [Customer Name]

Phone # [Customer Phone #] * Markup % Labor Rate0

Mfg P/N Description Qty Cost $ U/M X-Cost $Marku

p % X-Price $Labor Rate

Labor Hrs X-Labor $ Line Total $

57249-4 24/4 CAT5 GRAY PLENUM CABLE (VOICE) 113 $200.00 M/FT. $22,600.00

57249-2 24/4 CAT5 WHITE PLENUM CABLE (DATA) 108 $200.00 M/FT. $21,600.00

557505-4 4 PORT FLUSH FACEPLATE GRAY 250 $1.41 EA. $352.50

558357-4 4 PORT FUNITURE FACEPLATE GRAY 350 $1.76 EA. $616.00

557626-4 BLANK INSERT GRAY 1200 $0.24 EA. $288.00

AMP110W SEMTRON WALL PHONE FACEPLATE 24 $1.95 EA. $46.80

569012-3 RJ45 CAT5 568A INSERT ORANGE 600 $4.15 EA. $2,490.00

569012-5 RJ45 CAT5 568A INSERT GRAY 624 $4.15 EA. $2,589.60

558843-1 110/300 PAIR WIRING BLOCK 10 $24.10 EA. $241.00

558401-1 110/4 PAIR CONNECTING BL0CK 624 $0.40 EA. $249.60

558417-1 110 DESIGNATION STRIP HOLDER 60 $0.25 EA. $15.00

569431-1 110 CABLE MANAGEMENT RING 10 $7.00 EA. $70.00

557862-1 48 PORT CAT5 568A PATCH PANEL 15 $164.20 EA. $2,463.00

559366-1 1.75" HORIZONTAL MANAGEMENT PANEL 20 $41.00 EA. $820.00

557548-1 CABLE SUPPORT BAR 20 $11.40 EA. $228.00

559396-1 PRO SYSTEM RACK W/MANAGEMENT 5 $503.25 EA. $2,516.25

CADDY MP1 MP1 CUT-IN RING 149 $0.56 EA. $83.44

558048-6 3 FT. CAT5 PATCH CORD BLACK BOOT 200 $3.51 EA. $702.00

X-Cost $ X-Price $ Hours X-Labor $ Line Total $

Line Totals

58

Horizontal Pathways

• Underfloor Systems− Underfloor Duct− Cellular Floor

• Access Floor Systems• Conduit Systems• Cable Trays and Wireways• Ceiling Pathways• Perimeter Pathways• Miscellaneous Pathways

59

Horizontal Pathways

UNDERFLOOR DUCT

TC

Junction BoxFeeder Duct

ConcreteTwo LevelFlushductMultichannelRaceway

DistributionDuct

60

Horizontal Pathways

CELLULAR FLOOR

TC

Trough Voice

Power

TYPESSteelConcrete

Data

61

Horizontal Pathways

ACCESS FLOOR

TCTYPES

StringeredFree StandingCornerlock

MINIMUM HEIGHTSGeneral Office Areas = 150mm (6")Computer Area or Plenum = 300mm (12")

62

Horizontal Pathways

CONDUIT SYSTEMS

TC

Pull BoxTYPESMetallic TubingRigid MetalRigid PVC

- Length no more than 30 metersor contain more than two 90o bends

63

Horizontal Pathways

CEILING PATHWAYS

TCPlenum Space

Utility Columns

SuspendedCeiling

64

Horizontal Pathways

PERIMETER PATHWAYS

TYPESSurface RacewayRecessed RacewayMolding RacewayMultichannel Raceway

10 x 10

65

Horizontal Pathways

CABLE TRAYS AND WIREWAYS

TYPESLadder Cable TraySolid-Bottom Cable TrayVentilated or Trough Cable TrayWirewayChannel Cable Tray

66

Backbone Cabling System

67

BACKBONE CABLINGBACKBONE CABLINGStructured Cabling SystemsStructured Cabling Systems

IntermediateCross Connect

Main CrossConnect

EntranceCloset

Bldg 3

Bldg 2

IntermediateCross Connect

TelcoCloset

TelcoCloset

68

Backbone Cabling

HC/FD

HC/FD MC/CD

ER

IC/BD

TCTC

TC

UTPSTP-A

Optical Fiber

69

BACKBONE CABLING TOPOLOGYBACKBONE CABLING TOPOLOGYStructured Cabling SystemsStructured Cabling Systems

ICER

MCER

HC HC HC HCHC

WA WA WA WA WA WA

HORIZONTAL CABLING

BACKBONE CABLING

BACKBONE CABLING

BACKBONE CABLING

BACKBONE CABLING

HC

LEGEND

CROSS CONNECT X ENTRANCE FACILITY EF EQUIPMENT ROOM ER INTERMEDIATE CROSS CONNECT I C MAIN CROSS CONNECT MC TELECOMMUNICATIONS CLOSET T C WORK AREA WA HORIZONTAL CROSSCONNECT HC

MECHANICAL TERMINATION

SPLICE

TELECOMMUNICATIONS OUTLET

70

Backbone Media Considerations

Consider bandwidth, architecture and budget for this one.

UTP/FTP

Shielded Twisted Pair

fiber

71

Backbone Media

MediaType

ConductorConstruction Bandwidth Connector

Type

OPTICALFIBER

up to300 MHz

4-PositionData

up to100 MHz


up to16 MHz

8-PositionIDC

up to500 MHz-km

62.5/125µmMulti-mode

Duplex568SC

150Ω STP-A


22 AWG Solid(patch - 26 AWG

stranded)

8-PositionIDC



50/125µmMulti-mode SC-D

Enhanced CAT 5 CAT6 (250 MHz) CAT 7 (600 MHz)

72

Backbone Distances

HC/FD

HC/FD IC/BD

MC/CD EP

B

C

A

MEDIA A B C

UTP voice

UTP data

STP-A

Multimode Fiber

Singlemode Fiber

90 m/295ft

800 m/2624ft

90 m/295ft

500 m/1640ft 300 m/984ft

500 m/1640ft

500 m/1640ft3000 m/9840ft

2000 m/6560ft 1500 m/4920ft

2500 m/8200ft

73

BACKBONE CONNECTOR SELECTIONBACKBONE CONNECTOR SELECTIONStructured Cabling SystemsStructured Cabling Systems

EIGHT POSITION MODULAR JACK AND PLUGEIGHT POSITION MODULAR JACK AND PLUG

4 POSITION DATA CONNECTOR4 POSITION DATA CONNECTOR

DUPLEX SC FIBER CONNECTORDUPLEX SC FIBER CONNECTOR

74

Backbone Planning

• Sizing per number of strands/pairs• Sizing per bandwidth• Intrabuilding Routing

− Riser

• Interbuilding Routing− Underground− Buried− Aerial

• Fault Tolerance/Redundancy

75

Backbone Sizing - Counts

NETWORK TYPECOPPER PAIRS/FIBER STRANDS

10 BASE-T

100BASE-T/SX/LX

155 Mbps ATM

1000BASE-T

1.2 Gbps ATM

2

2

2

4/2

?

Token Ring

FDDI DAS - 4 / SAS - 2

RING IN - 2 / RING OUT - 2

76

Optical Fiber Bandwidth and Length Specifications

Fiber TypeNetwork

PlatformsBandwidth.Km

(850nm/1300nm)Maximum Length(850nm/1300nm)

10-100 Base T/155 Mpbs ATM 160/500 2000m/2000m62.5/125 622 Mbps ATM 160/500 300m/500m

1000 Base T/1.2 Gbps ATM 160/500 220m/550m2.5 Gbps ATM 160/500 100m/300m

10-100 Base T/155 Mbps ATM 500/500 2000m/2000m50/125 622 Mpbs ATM 500/500 500m/2000m

1000 Base T/1.2 Gbps ATM 500/500 550m/550m2.5 Gbps ATM 500/500 300m/300m

Fiber TypeNetwork

PlatformsBandwidth.Km

(1310nm/1550nm)Maximum Length(1310nm/1550nm)

Single Mode All Platforms Virtually Unlimited 3000m/3000m

77

Backbone Routing

78

Backbone Backbone IntrabuildingIntrabuilding PathwaysPathwaysSLOTS AND SLEEVESSLOTS AND SLEEVES

100mm100mm(4")(4") 2525--100mm100mm

(1(1--3") Max3") Max

FloorFloorSlotSlot

BackboneCableBackboneBackboneCableCable

CableCableStrapStrap 25mm25mm

(1")(1")

100mm100mm

(4")(4")

300mm300mm

(12")(12") SleeveSleeve

79

Intrabuilding Riser Routing

Conduit Sleeve

D-Rings or Straps

110 Panel

110 Panel

Conduit Sleeve

Strand

3-bolt Clamp

80

IntrabuildingIntrabuilding BackboneBackbone

VERTICAL BACKBONESVERTICAL BACKBONES

IC OR TCIC OR TC

IC OR TCIC OR TC

IC OR TCIC OR TC

MC OR ICMC OR IC

81


DESIGNING VERTICAL BACKBONESDESIGNING VERTICAL BACKBONES

IC OR TCIC OR TC

IC OR TCIC OR TC

IC OR TCIC OR TC

MC OR ICMC OR IC

OPTIONALOPTIONALFAULTFAULTTOLERANTTOLERANT

82


VERTICAL/LATERAL BACKBONESVERTICAL/LATERAL BACKBONES

6th Floor6th Floor

5th Floor5th Floor

4th Floor4th Floor

3rd Floor3rd Floor

2nd Floor2nd Floor

1st Floor1st Floor

100mm (4")100mm (4")SleevesSleeves

100mm (4")100mm (4")ConduitConduit


100mm (4")100mm (4")SleevesSleeves


Telecom.EquipmentRoom

Conduit Conduit

TC

TC

TC

TC

TC

TC

TC

TC

TC

TC

TC

TC

83

Intrabuilding Riser Schematic

84

TIA/EIA 568ATIA/EIA 568AInterbuildingInterbuilding BackboneBackbone

TC

TCMCER

EF ER

TO LOCAL EXCHANGE TO LOCAL EXCHANGE CARRIERCARRIER

ICER

TC

TC

TC BUILDING 3BUILDING 3

BUILDING 1

INTERBUILDING BACKBONE CABLINGINTERBUILDING BACKBONE CABLING

LEGEND

CROSS CONNECT X ENTRANCE FACILITY EF EQUIPMENT ROOM ER INTERMEDIATE CROSS CONNECT IC MAIN CROSS CONNECT MC TELECOMMUNICATIONS CLOSET TC WORK AREA WA


SPLICE


TC

ICER

TC

TC

TC

BUILDING 2BUILDING 2

85

InterbuildingInterbuilding BackboneBackboneFAULT TOLERANT DESIGNFAULT TOLERANT DESIGN

TC

TCMCER

EF ER

TO LOCAL TO LOCAL EXCHANGE CARRIEREXCHANGE CARRIER

ICER

TC

TC

TC BUILDING 3BUILDING 3

BUILDING 1

FAULT TOLERANT BACKBONEFAULT TOLERANT BACKBONE

LEGEND

CROSS CONNECT X ENTRANCE FACILITY EF EQUIPMENT ROOM ER INTERMEDIATE CROSS CONNECT IC MAIN CROSS CONNECT MC TELECOMMUNICATIONS CLOSET TC WORK AREA WA


SPLICE


TC

ICER

TC

TC

TC

BUILDING 2BUILDING 2

86

Interbuilding Backbone Pathways

87

Underground

88

Direct Buried

Warning tape

Cable Sand

89

Aerial

90

Interbuilding Pathway Variables− applicable codes− aesthetics of building and surrounding location− type and use of building− future growth− difficulty of adding pathways in the future− type, size, length, and number of cables to be

installed− separation from electrical facilities− physical possibilities (ground topologies, soil

conditions, obstructions)− an alternate entrance− use of corrosion resistant pathways and

associated hardware

91

Interbuilding Backbone Pathway #1

92

Interbuilding Backbone Pathway #2

93

Entrance Cabling Termination50 Ft Rule

94

Intra-building Riser Schematic

MC

IC

ICTC

TC

TC

IC

TC

TC

MAIN BLOCKOFFICE BLOCK

1st Floor

2nd Floor

Groundfloor

2nd Floor

1st Floor

Groundfloor

1st Floor

2nd Floor

Basement

ER

95

TIA/EIA-606 Administration

IdentifiersTerminationHardware

Pathway SpaceTermination

PositionCable Grounding

RecordsTerminationHardware

Pathway SpaceTermination

PositionCable Grounding

Required Linkages

96

Color - Coding

COLOR

BLUE

WHITEWHITEWHITE

GREY

BROWN

ORANGE

GREEN

RED

PURPLEYELLOWYELLOW

TERMINATION TYPE

Horizontal (Station)Cable

First-Level Backbone - MC-IC Terminations

Second-Level Backbone - IC-TC Terminations

Interbuilding Backbone - Campus Terminations

Demarcation Point - Central Office terminations

Network Connections

Key Telephone Systems

Common EquipmentMiscellaneous - auxiliary, alarms, security

97

TIA/EIA-607 Schematic

TGB TGB

TGBTMGB

TGB TGB

TBB TBB

TBB

TBBIBC

PanelboardMetal Frameof Building

EF ER

TC

TCTC

TC

98





Work Area

Work Area

Work Area

99


Centralized Cross-Connect/Electronics

Pull-Through Cables

Splice or Interconnect

100

Centralized Optical Fiber Cabling

90 meters

300 meters90 meters

Pull-through

TC

Splice/Interconnect

TC

62.5/125µ

62.5/125µ

62.5/125µWA

WA

CentralizedCross-

Connect

101

Zone Distribution Cabling

102

Consolidation Point (CP)

103

CP Distance Specifications

− 90 m max, telecommunications closet to outlet− 15 m min, telecommunications closet to CP

CP

90 m max15 m min

104

Multi-User Outlet (MUO)

105

MUO Cabling Distance Formula

W H P E

MUO

C = W + P + EC max = (102 - H)/1.2

P + E = 7 m maxW = C - 7; must be < 20 m

106

MUO Cabling Distance Chart

Length of Work AreaCords (meters)

Length of HorizontalCable (meters)

90

85

80

75

70

3

7

11

15

20

107

MUO/CP Comparison

Initial Installation Cost

Ease of access?

Outlet in Work Area?

Plug-and-Play?

MUO CP

Lower Higher

Yes No

No Yes

Yes Yes

108

Distribution Point Placement

• Fixed Walls• Structural Columns• Utility Columns• Cellular Floor and Poke-Thru• Raised (Access) Floor• Ceiling Space• Furniture

109

Design Considerations

110

Sizing The Zone - Example

30’

30’columns

Example Office:

• 8100 ft2 open office• Typical office layout:

8’x8’ offices in6-office clusters

• 3 Communicationsports/office

111

Sizing The Zone - Example

30’

22-1/2’Possible solution:

• 12 Zones• 675 ft2/zone• 18 Ports min/zone• (24 Ports for spare

capacity)

112

Distribution Point Location ExampleZone Size Example:• 675 ft2, 30’ x 22-1/2’

Possible Solution:• Locate CP/MUO on columns• Max distance from CP to

outlet = 52-1/2’ (16 m)• Max distance from MUO to

workstation = 52-1/2’ (16 m)• Max distance from closet to

CP/MUO = 105’ (32 m)(< 90 m max allowance)

• Allow for various ceiling heights in either solution

30’

22-1/2’

closet

Caution:Ensure that locations nearest closet do not violate 15 m min

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Furniture Pathways

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Furniture Pathways

4 Structure Cabling System Design

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