Download - 4 Structure Cabling System Design
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STRUCTURE CABLING STRUCTURE CABLING SYSTEM DESIGNSYSTEM DESIGN
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Designing Premises Cabling Systems
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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
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Cabling Systems DesignDecision Tree
Influence Identify
Applications
Software
Hardware
Network Platform
Mid-levelManagement
(Performance)Physical Plant
ExecutiveManagement
(Cost)
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DNADistributed Network Architecture
Equipment Room/Entrance Facility
TelecommunicationsCloset
TelecommunicationsCloset
Work Area
Work Area
Work Area
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DNADistributed Network Architecture
Telecommunications Closet
Equipment Room
Server
Telecommunications Closet
Max 90 mM
ax 5
00 m
(fib
er)
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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
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CNACentralized Network Architecture
Centralized Cross-Connect/Electronics
Pull-Through Cables
Splice or Interconnect
Single User or
Zone
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CNACentralized Network Architecture
Equipment Room
Server
TelecommunicationsCloset ?
Interconnect or splice
Max 300 m total (fiber)
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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
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Home Run Cabling
TelecommunicationsCloset
Single-UserCable & Outlets
•Splice or Pull Thru for CNA
•Cross Connect and Electronics for DNA
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Zone Distribution Cabling
MUO
CP
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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
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Architectures
Equipment Room/Entrance Facility
DNAor
CNAZone
Home Run
Zone
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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
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MHz vs. Mbps
Frequency = 1 Car /sec (Hertz)Transferred Data = 1 Bits /sec (Bps)A B
Frequency = 2 Car /sec (Hertz)Transferred Data = 2 Bits /sec (Bps)A B
Frequency = 2 Car /sec (Hertz)Transferred Data = 6 Bits /sec (Bps)A B
Frequency = 2 Car /sec (Hertz)Transferred Data = 12 Bits /sec (Bps)A B
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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
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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
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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
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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
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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
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Star Topology
MC/CD
HC/FD
IC/BD(optional)
Horizontal CablingBackbone Cabling Work area
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Cross-Connects/Distributors
Main Cross-Connect/Campus Distributor
IntermediateCross-Connect/
Building Distributor
IntermediateCross-Connect/
Building Distributor
HorizontalCross-Connect/
Floor Distributor
HorizontalCross-Connect/
Floor Distributor
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Elements/Sub-Systems
• Work Area• Horizontal Cabling• Telecommunications Closet• Backbone Cabling• Equipment Room• Entrance Facility• Administration
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Work Area, Horizontal Cabling, Telecommunications Closet
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Backbone Cabling
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Equipment Room
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Entrance Facilities
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Elements/Sub-Systems - Administration
• Work Area• Horizontal Cabling• Telecommunications Closet• Backbone Cabling• Equipment Room• Entrance Facility• Administration
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Telecommunications OutletPlacement Requirements
TC
X
WA
HC/FD
1m/3 ft.
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Telecommunications ClosetPlacement Requirements
1000 m2/10,000 ft2
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Telecommunications ClosetDesign Considerations
• Size• Clearances• Floor Loading• Closet
Penetrations• Security• Fire Protection• Environmental
Control
• Lighting• AC Power• Physical
Construction• Dust Protection• Finish Color• Grounding
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Equipment RoomPlacement Requirements
HALLWAY ER
TC TC
TC
MPOP
ELEV.SHAFT
LEC
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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
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Horizontal Cabling System
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TIA/EIA 568A SubTIA/EIA 568A Sub--systemsystem
HORIZONTAL CABLINGHORIZONTAL CABLING
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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
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Horizontal Media Considerations
Consider bandwidth, architecture and budget for this one.
UTP/FTP
Shielded Twisted Pair
fiber
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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
24 AWG Solid(patch - stranded)
22 AWG Solid(patch - 26 AWG
stranded)
8-PositionIDC
100Ω/120ΩCAT 3 UTP
100Ω/120ΩCAT 5 UTP
50/125µmMulti-mode SC-D
Enhanced CAT 5 CAT6 (250 MHz) CAT 7 (600 MHz)
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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)
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Horizontal Cabling Horizontal Cabling
CONNECTORS FIBER OPTICCONNECTORS FIBER OPTIC
62.5/125 FIBER
568 SC BULKHEADCONNECTOR
DUPLEX SCCONNECTORS
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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
?
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Horizontal Distances
90 m 3 m6 m
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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.
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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
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Telecommunications Outlet Elevation
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AMP Angled Faceplate With Shutter Cover (UK version)
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Telecommunications Outlet Pathway Elevation
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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
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Telecommunications Closet
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
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Telecommunications Closet Elevation
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Telecommunications Closet Rack Elevation
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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
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Horizontal Cabling Floorplan
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CABLE LENGTH CALCULATIONCABLE LENGTH CALCULATIONHorizontal ExerciseHorizontal Exercise
LL
SL
2X # WS( + 15%)SL + LL+ 4CH
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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
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Horizontal Pathways
• Underfloor Systems− Underfloor Duct− Cellular Floor
• Access Floor Systems• Conduit Systems• Cable Trays and Wireways• Ceiling Pathways• Perimeter Pathways• Miscellaneous Pathways
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Horizontal Pathways
UNDERFLOOR DUCT
TC
Junction BoxFeeder Duct
ConcreteTwo LevelFlushductMultichannelRaceway
DistributionDuct
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Horizontal Pathways
CELLULAR FLOOR
TC
Trough Voice
Power
TYPESSteelConcrete
Data
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Horizontal Pathways
ACCESS FLOOR
TCTYPES
StringeredFree StandingCornerlock
MINIMUM HEIGHTSGeneral Office Areas = 150mm (6")Computer Area or Plenum = 300mm (12")
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Horizontal Pathways
CONDUIT SYSTEMS
TC
Pull BoxTYPESMetallic TubingRigid MetalRigid PVC
- Length no more than 30 metersor contain more than two 90o bends
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Horizontal Pathways
CEILING PATHWAYS
TCPlenum Space
Utility Columns
SuspendedCeiling
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Horizontal Pathways
PERIMETER PATHWAYS
TYPESSurface RacewayRecessed RacewayMolding RacewayMultichannel Raceway
10 x 10
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Horizontal Pathways
CABLE TRAYS AND WIREWAYS
TYPESLadder Cable TraySolid-Bottom Cable TrayVentilated or Trough Cable TrayWirewayChannel Cable Tray
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Backbone Cabling System
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BACKBONE CABLINGBACKBONE CABLINGStructured Cabling SystemsStructured Cabling Systems
IntermediateCross Connect
Main CrossConnect
EntranceCloset
Bldg 3
Bldg 2
IntermediateCross Connect
TelcoCloset
TelcoCloset
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Backbone Cabling
HC/FD
HC/FD MC/CD
ER
IC/BD
TCTC
TC
UTPSTP-A
Optical Fiber
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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
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Backbone Media Considerations
Consider bandwidth, architecture and budget for this one.
UTP/FTP
Shielded Twisted Pair
fiber
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Backbone 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
24 AWG Solid(patch - stranded)
22 AWG Solid(patch - 26 AWG
stranded)
8-PositionIDC
100Ω/120ΩCAT 3 UTP
100Ω/120ΩCAT 5 UTP
50/125µmMulti-mode SC-D
Enhanced CAT 5 CAT6 (250 MHz) CAT 7 (600 MHz)
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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
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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
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Backbone Planning
• Sizing per number of strands/pairs• Sizing per bandwidth• Intrabuilding Routing
− Riser
• Interbuilding Routing− Underground− Buried− Aerial
• Fault Tolerance/Redundancy
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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
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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
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Backbone Routing
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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
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Intrabuilding Riser Routing
Conduit Sleeve
D-Rings or Straps
110 Panel
110 Panel
Conduit Sleeve
Strand
3-bolt Clamp
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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
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IntrabuildingIntrabuilding BackboneBackbone
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
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IntrabuildingIntrabuilding BackboneBackbone
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")ConduitConduit
100mm (4")100mm (4")SleevesSleeves
100mm (4")100mm (4")ConduitConduit
Telecom.EquipmentRoom
Conduit Conduit
TC
TC
TC
TC
TC
TC
TC
TC
TC
TC
TC
TC
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Intrabuilding Riser Schematic
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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
MECHANICAL TERMINATION
SPLICE
TELECOMMUNICATIONS OUTLET
TC
ICER
TC
TC
TC
BUILDING 2BUILDING 2
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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
MECHANICAL TERMINATION
SPLICE
TELECOMMUNICATIONS OUTLET
TC
ICER
TC
TC
TC
BUILDING 2BUILDING 2
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Interbuilding Backbone Pathways
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Underground
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Direct Buried
Warning tape
Cable Sand
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Aerial
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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
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Interbuilding Backbone Pathway #1
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Interbuilding Backbone Pathway #2
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Entrance Cabling Termination50 Ft Rule
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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
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TIA/EIA-606 Administration
IdentifiersTerminationHardware
Pathway SpaceTermination
PositionCable Grounding
RecordsTerminationHardware
Pathway SpaceTermination
PositionCable Grounding
Required Linkages
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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
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TIA/EIA-607 Schematic
TGB TGB
TGBTMGB
TGB TGB
TBB TBB
TBB
TBBIBC
PanelboardMetal Frameof Building
EF ER
TC
TCTC
TC
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DNADistributed Network Architecture
Equipment Room/Entrance Facility
TelecommunicationsCloset
TelecommunicationsCloset
Work Area
Work Area
Work Area
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CNACentralized Network Architecture
Centralized Cross-Connect/Electronics
Pull-Through Cables
Splice or Interconnect
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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
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Zone Distribution Cabling
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Consolidation Point (CP)
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CP Distance Specifications
− 90 m max, telecommunications closet to outlet− 15 m min, telecommunications closet to CP
CP
90 m max15 m min
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Multi-User Outlet (MUO)
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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
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MUO Cabling Distance Chart
Length of Work AreaCords (meters)
Length of HorizontalCable (meters)
90
85
80
75
70
3
7
11
15
20
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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
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Distribution Point Placement
• Fixed Walls• Structural Columns• Utility Columns• Cellular Floor and Poke-Thru• Raised (Access) Floor• Ceiling Space• Furniture
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Design Considerations
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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
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Sizing The Zone - Example
30’
22-1/2’Possible solution:
• 12 Zones• 675 ft2/zone• 18 Ports min/zone• (24 Ports for spare
capacity)
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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