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Structured Cabling SystemsStructured Cabling Systems
BACKBONE CABLINGBACKBONE CABLING
IntermediateCross Connect
Main CrossConnect
EntranceCloset
Bldg 3
Bldg 2
IntermediateCross Connect
TelcoCloset
TelcoCloset
Backbone Cabling
HC/FD
TC
HC/FD
TC
MC/CD
ER
UTPSTP-A
Optical Fiber
IC/BD
TC
Structured Cabling SystemsStructured Cabling Systems
BACKBONE CABLING TOPOLOGYBACKBONE CABLING TOPOLOGY
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
Backbone Media Considerations
UTP/FTP
Shielded Twisted Pair
fiber
Consider bandwidth, architecture and budget for this one.
Backbone MediaMediaType
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)
Backbone Distances
HC/FD
HC/FD IC/BD
MC/CD
B
C
A EP
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
Structured Cabling SystemsStructured Cabling Systems
BACKBONE CONNECTOR SELECTIONBACKBONE CONNECTOR SELECTION
EIGHT POSITION MODULAR JACK AND PLUGEIGHT POSITION MODULAR JACK AND PLUG
4 4 POSITION DATA CONNECTORPOSITION DATA CONNECTOR
DUPLEX SC FIBER CONNECTORDUPLEX SC FIBER CONNECTOR
Backbone Planning
• Sizing per number of strands/pairs• Sizing per bandwidth• Intrabuilding Routing
− Riser
• Interbuilding Routing− Underground− Buried− Aerial
• Fault Tolerance/Redundancy
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
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
Backbone Routing
BackboneBackbone IntrabuildingIntrabuilding PathwaysPathwaysSLOTS AND SLEEVESSLOTS AND SLEEVES
100100mmmm(4")(4") 2525--100100mmmm
(1(1--3") Max3") Max
FloorFloorSlotSlot
BackboneCableBackboneBackboneCableCable
CableCableStrapStrap 2525mmmm
(1")(1")
100100mmmm
(4")(4")
300300mmmm
(12")(12") SleeveSleeve
Intrabuilding Riser Routing
Conduit Sleeve
D-Rings or Straps
110 Panel
110 Panel
Conduit Sleeve
Strand
3-bolt Clamp
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
IntrabuildingIntrabuilding BackboneBackbone
DESIGNING VERTICAL BACKBONESDESIGNING VERTICAL BACKBONES
IC OR TCIC OR TC OPTIONALOPTIONALFAULTFAULTTOLERANTTOLERANT
IC OR TCIC OR TC
IC OR TCIC OR TC
MC OR ICMC OR IC
IntrabuildingIntrabuilding BackboneBackbone
VERTICAL/LATERAL BACKBONESVERTICAL/LATERAL BACKBONES
11st Floorst Floor
100100mm (4")mm (4")ConduitConduit
100100mm (4")mm (4")ConduitConduit
100100mm (4")mm (4")ConduitConduit
Telecom.EquipmentRoom
TC
TC
TC
TC
TC
TC
TC
TC
TC
TC
TC
TC
66th Floorth Floor
Conduit Conduit 55th Floorth Floor
44th Floorth Floor
33rd Floorrd Floor
22nd Floornd Floor
100100mm (4")mm (4")Sleeves
100100mm (4")mm (4")Sleeves SleevesSleeves
Intrabuilding Riser Schematic
InterbuildingInterbuilding BackboneBackboneTIA/EIA 568ATIA/EIA 568A
TC
TCMCER
EF ER
TO LOCAL EXCHANGE TO LOCAL EXCHANGE CARRIERCARRIER
ICER
TC
TC
TC
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 3BUILDING 3
BUILDING 2BUILDING 2
InterbuildingInterbuilding BackboneBackboneFAULT TOLERANT DESIGNFAULT TOLERANT DESIGN
TC
TCMCER
EF ER
TO LOCAL TO LOCAL EXCHANGE CARRIEREXCHANGE CARRIER
ICER
TC
TC
TC
BUILDING 1LEGEND
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
FAULT TOLERANT BACKBONEFAULT TOLERANT BACKBONE BUILDING 3BUILDING 3
BUILDING 2BUILDING 2
Interbuilding Backbone Pathways
Underground
Direct Buried
Warning tape
Cable Sand
Aerial
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
Interbuilding Backbone Pathway #1
Interbuilding Backbone Pathway #2
Entrance Cabling Termination50 Ft Rule
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
