ADC’s TrueNet® Structured Cabling System is the integrated portfolio of high-performance copper and fiber cable, connectivity, and cable management products from ADC and KRONE.. True End
Trang 12nd Edition
Structured Cabling Solutions
Trang 2Introduction 3
Technical Reference Industry.Standards 6
How.to.Choose.the.Right.Cabling.Infrastructure 19
10Gigabit.Ethernet.over.UTP:.CopperTen™.Cabling.Solution 22
Choosing.the.Right.Ethernet.Patch.Panels 26
Designing.the.Optimized.Data.Center 31
Key.Fiber.Optic.Cable.Management.Concepts 36
Power-over-Ethernet Solutions Midspan.Power-over-Ethernet.Controller 40
Four-Port.Midspan.Power-over-Ethernet.Unit 43
Four-Circuit.Midspan.Power-over-Ethernet.Unit 44
Copper Cable Solutions Introduction 46
Augmented.Category.6.Horizontal.Cable CopperTen™.Category.6A.Plenum.Data.Cable 47
CopperTen™.Category.6A.Riser.Data.Cable 48
Category.6.Horizontal.Cable Plenum 49
Riser 52
Bundled.Plenum 55
Bundled.Riser 58
Limited.Combustible 61
Category.5e.Horizontal.Cable Plenum 64
Riser 67
Bundled.Riser 70
The.Outback.Outdoor.Cable 73
Category.5.Backbone.Cable 25-pair.Plenum 76
25-pair.Riser 78
Category.3.Horizontal.and.Backbone.Cable Plenum 80
Riser 82
Horizontal.and.Backbone.Cable Category.1.UTP.Plenum 84
Category.1.UTP.Riser 86
Copper Connectivity Solutions CopperTen™:.Augmented.Category.6.Solutions Introduction 90
CopperTen™.Patch.Panels 91
CopperTen™.Termination.Blocks 92
CopperTen™.Patch.Cords 93
CopperTen™.Modular.Jack 94
CopperTen™.Faceplate 95
CopperTen™.Surface.Mount.Box 96
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Trang 3Category.6.Solutions
Introduction 98
Patch.Panels 24-Port 100
48-Port 100
6-Port 100
Blank.Panel 100
Dynamic.Angle.Right/Left.Panel 24-Port 101
48-Port 101
Plug.‘n’.Play.Patch.Panel 24-Port.Patch.Plus 103
High-Density.Plug.‘n’.Play 103
Label.Sheets 103
Ultim8™.Termination.Block.System Wire.Termination.Block 104
Field.Assembly.Kits 96-Pair 105
160-Pair 105
168-Pair 105
HighBand®.25.Termination.Block.Systems Wire.Termination.Blocks 300-Pair.Basic.System 107
900-Pair.Basic.System 107
300-Pair.Cable.Management.Kit 107
900-Pair.Cable.Management.Kit 107
Block.with.Rear.Cable.Manager 107
25-Pair.Voice.Module 107
Label.Holder 108
Back.Mount.Frame 108
Cable.Trough 108
Cable.Management.Rings 108
Rack.Mount.Frame 108
Patch.Cords RJ45.Plug.to.RJ45.Plug 109
For.Ultim8™.Blocks 110
For.HighBand®.25.Blocks 112
KM8.Modular.Jacks 113
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Trang 4UMS/Mini.Patch.Panels
6-Port 122
Patch.Cords 123
HighBand®.10.Termination.Block.System 10-pair.Blocks 124
Field.Assembly.Kits 125
K610.Series.Jacks 126
Specialty Copper Connectivity Products Ethernet.Test.Access.Panel 128
T1.Demarcation.Modular.Patch.Panels 129
RJ45.Coupler.Panel 130
Fast.Ethernet.Patch.Panels 131
25-Pair.Cable.Assemblies RJ21x/RJ21x 132
RJ21x/Hydra 132
HighBand®.10.Collocation.Block.Systems 100-Pair 134
200-Pair 134
300-Pair 134
Feed-Thru.(FT).Termination.Blocks 4-Pair.Color-Coded.Block 136
5-Pair.Color-Coded.Block 136
Type.160.Hinged.Label.Holder 136
Label.Sheets 136
Field.Assembly.Kits 100-Pair,.4-Pair.Color-Coded 138
100-Pair,.5-Pair.Color-Coded 138
300-Pair,.4-Pair.Color-Coded 138
300-Pair,.5-Pair.Color-Coded 138
Patch.Cords 139
Test.Shoe 141
Test.Cord 141
Copper Cable Management Solutions Ethernet.Distribution.Frame 144
Glide.Cable.Manager Glide.Cable.Manager,.Vertical.Mount 146
Hinged.Black.Metal.Cover.Kit 146
Glide.Cable.Manager,.Cabinet.Mount 146
Crossover.Troughs 147
Horizontal.Cable.Managers 147
Rear.Cable.Management.Bar 147
Slack.Manager 147
Stabilizers 147
Extender.Brackets 147
7'.Equipment.Racks 147
Universal.Mounting.System.(UMS).Introduction 148
Universal.Mounting.System.(UMS) 149
Basic.Kit 149
Vertical.Cable.Manager 151
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Trang 5Horizontal.Wire.Manager 151
BackBoard 152
High.Volume.Cable.Managers 19".Cable.Manager 153
23".Cable.Manager 153
35.5".Cable.Manager 153
6.5".Cable.Manager 153
9".Cable.Manager 153
Back.Mount.Frames Type.85.Back.Mount.Frames 154
Type.105.Back.Mount.Frames 155
Type.105.Back.Mount.Frame.with.Ground.Lug 156
Rod.Mount.Frames Type.85.Rod.Mount.Brackets 157
Type.105.Rod.Mount.Brackets 158
Rod.Mount.Spacer 158
Wall.or.Rack.Mount.Mounting.Frames 19".Mounting.Frame 159
23".Mounting.Frame 159
35.5".Mounting.Frame 159
Wall.or.Rack.Mount.Support.Bars 19".Support.Bar 160
23".Support.Bar 160
35.5".Support.Bar 160
Type.85.and.Type.105.Inverted.Support.Bars 161
Jumper.Rings 19".Jumper.Ring.Bar 162
23".Jumper.Ring.Bar 162
35.5".Jumper.Ring.Bar 162
Accessories Vertical.Cable.Organizer 164
Horizontal.Cable.Organizer 164
Rear.Wire.Management.Guide 164
High-Density.Cable.Manager 164
Ring.Wire.Manager 164
Hinged.Wall.Mount.Bracket 164
Copper Connectivity Accessories and Labels
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Trang 6Paper.Labels 171
TIA/EIA-606.Color-Coding 171
Label.Sheet.for.Type.105.Hinged.Label.Holder 171
Label.Sheet.for.Type.105.Label.Holder 171
Label.Sheet.for.Type.105.Label.Strip 171
Work Area Solutions Introduction 174
Category.6A.Modular.Jacks 175
Category.6.KM8.Modular.Jacks 176
Category.5e.K610.Series.Jacks 177
Modular.Adapters F-81.Adapter 179
MTRJ.Adapters 179
SC.Multimode/Singlemode.Adapters 179
ST®.Multimode/Singlemode.Adapters 179
BNC.Adapter 179
S-Video.Adapter 179
RCA.Adapter 179
Blank.Modular.Insert 179
Angled.Port.Faceplates 4-Port 180
8-Port 180
Faceplate.Extender 180
Flush.Mount.Faceplates Single-Gang 2-Port 182
4-Port 182
6-Port 182
Dual-Gang 4-Port 182
8-Port 182
12-Port 182
Specialty.Faceplates Stainless.Steel 184
Stainless.Steel.Wall.Phone.Plate 184
4-Port.Walker.Monument.Faceplate 184
Drywall.Faceplate.Adapter 184
Electrical.Faceplate.106.Adapter 184
Dual-Gang.Surface.Mount.Box 184
Decorative.Faceplates 185
Modular.Furniture.Faceplates 3-Port 187
4-Port 187
4-Port.Beltline.Adapter 187
2-Port.Horizontal 187
Surface.Boxes 2-Port 188
4-Port 188
6-Port 188
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Trang 7Surface.Box.for.Modular.Furniture
12-Port 189
Mounting.Accessories 189
Specialty.Boxes Multimedia.Box Multimedia.Box 190
Empty.Bezels 190
Mounting.Magnets 190
All-Fit.Specialty.Box 6-Port 192
4-Port 192
Steel.Cover 192
Duplex.SC.Bezel 192
Surface.Mount.Box 192
Magnet.Strip 192
Accessories KM8.Termination.Tool 193
Termination.Puck 193
ID.Tabs 193
Paper.Labels.for.Faceplates 193
Concealed.Entrance.Outlets 194
Fiber Cable Solutions Introduction 196
OSP.Cable I/O.Dry.Loose.Tube.–.Riser/Plenum 198
I/O.Riser 200
Compact.Building.Cables Plenum 202
Riser 204
Breakout.Cables:.Riser.and.Plenum 206
Closet.Distribution.LCF.Optical.Cable.(Heavy.Metal/Lead-Free) Plenum 208
Riser 211
Furcation.Tubing 214
Next Generation Frame – High Density Fiber Solutions Introduction.&.Applications 218
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Trang 8Fiber Connectivity Solutions
Fiber.Enclosure.Products
FL2000.System
Preconfigured.Termination/Splice.Panels 234
Preconfigured.Termination.Only.Panels 235
Preconfigured.Termination/Splice.Panels.with.Two.Adapter.Styles 236
Preconfigured.Termination.Panels.with.MTRJ.Adapters 237
Preconfigured.Termination.Panels.with.Multifiber.Cable 239
Empty.Termination.Panels 241
Empty.Splice.Panels 242
Empty.Termination/Splice.Panels 243
6pak.Connector.Plug-Ins.with.Adapters.and.Pigtails 244
6pak.Connector.Plug-Ins.with.Adapters.only 245
FL2000.Mounting.Options 19".(48.26cm).Rack.Mounting:.Standard.and.Flush.Mount 246
19".(48.26cm).Rack.Maximum.Mounting 247
FPL.Series.Fiber.Panels 1.Rack.Unit.FPL 249
Preconfigured.Termination.Only.Panels 251
Preconfigured.Termination.Panels.with.Multifiber.Cable 253
Preconfigured.Termination/Splice.Panels 255
Preconfigured.High.Density.Termination/Splice.Panels 257
Fiber.Management.Trays 1.Rack.Unit.Slack.Storage 261
1.Rack.Unit.Termination/Splice.Fixed.Bulkhead 263
1.Rack.Unit.Termination.and.Storage.Fixed.Bulkhead 264
1.Rack.Unit.Specifications 265
2.Rack.Unit.Termination.with.Adapters.Only 266
2.Rack.Unit.Termination.with.Multifiber.Cable 267
2.Rack.Unit.Termination/Splice 268
2.Rack.Unit.Micro.Value.–.Added.Module.System 269
2.Rack.Unit.Micro.Value.–.Added.Module.System.Monitor.Module 270
RMG.Series.Rack.Mount.Fiber.Enclosures Specifications 273
Pre-Configured.Panels.with.Adapters.and/or.Pigtails 274
Empty.Panels 275
Modular.Adapter.Paks 276
Modular.MTP/MPO.Cassettes 278
WMG.Series.Wall.Mount.Fiber.Enclosures Pre-Configured.Enclosures.with.Adapters.and/or.Pigtails 280
Empty.Enclosures 281
Modular.Adapter.Paks 282
Fiber.Optic.Specifications 284
Fiber.Optic.Patch.Cords Multimode 285
Singlemode 286
Multifiber.Patch.Cords 287
Fiber.Connectivity.Accessories Fiber.Connector/Adapter.Cleaning.Kit 288
Fiber.Optic.Connectors Epoxy/Polish.Connectors 289
Field.Installation.Connectors 291
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Trang 9Fiber Cable Raceway System
Standard.FiberGuide®.Fiber.Management.System
Patch.Cord.Densities 296
Express.Exits™.Units 297
2x2.System 297
2x6.System 298
4x4.System 299
4x4.and.4x6.Downspout.Options 300
2x6,.4x4.and.4x6.Support.Kits 300
4x6.System 301
4x12.System 302
Vertical.Duct.System 303
Flex.Tubing 303
Accessories 303
Plenum.FiberGuide®.System Patch.Cord.Density 306
2x2.System 307
4x6.System 308
4x12.System 309
Accessories 309
Complementary Products Voice.Grade.Solutions Series.2.Wire.Termination.Block.System 8-Pair.Block 312
10-Pair.K110.Disconnect.Block 312
10-Pair.Block 312
Field.Assembly.Kits 160-Pair 314
200-Pair 314
300-Pair 314
Preterminated.Assemblies 160-Pair 316
168-Pair 316
200-Pair 316
300-Pair 317
Preterminated.Blocks 200-Pair 318
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Trang 10Type.85.Hinged.Label.Holder 325
Type.85.Label.Strip 325
Side-Mount.Label.Holder 325
Type.105.Label.Holder 325
Type.105.Hinged.Label.Holder 325
Type.105.Slotted.Label.Strip 325
Label.Sheet.for.Type.85.Rod.Mount.Label.Holder 327
Label.Sheet.for.Type.85.Label.Holder,.Hinged.Label.Holder.or.Label.Strip 327
Label.Sheet.for.Type.105.Hinged.Label.Holder 327
Label.Sheet.for.Type.105.Label.Strip 327
Accessories Disconnect.Plug 329
Flat-Top.Dummy.Plugs 329
Marking.Caps 329
Ground.Clips 329
Cable.Clamp 329
Disconnect.Bars 329
200-Pair.Dust.Cover 330
Winged.Test.Adapter 330
Signature.Device 330
Test.Cords 330
“Look-Both-Ways”.Test.Cord 330
Site-Mounted.Test.Cord NT.Termination.Block.System Disconnect.Block 332
Switching.Block 332
Connect.Block 332
Ground.Block 332
NT.to.Series.2.Adapter 332
Dummy.Plug 332
Marking.Caps 332
Disconnect.Plug 332
Hinged.Label.Holder 332
Label.Holder 332
5-Position.Back.Mount.Frame 333
10-Position.Back.Mount.Frame 333
20-Position.Back.Mount.Frame 333
30-Position.Back.Mount.Frame 333
KRONE.Insertion.Tool 334
89D.Style.Termination.Blocks.and.Assemblies 25-Pair.Disconnect.Block.Assembly 335
50-Pair.Disconnect.Block.Assembly 335
5-Pair.Disconnect.Block 335
25-Pair.Disconnect.Block.with.RJ-21X.Connector 336
25-Pair.Disconnect.Block.with.RJ-71C 336
25-Pair.Disconnect.Block.with.RJ48X.Connectors 337
25-Pair.Disconnect.Block.with.RJ48S.Connectors 338
25-Pair.Disconnect.Block.with.RJ48C.Connectors 338
25-Pair.Disconnect.Block.with.RJ48S.and.RJ-21X.Connectors 339
25-Pair.Disconnect.Block.with.RJ14C.and.RJ-21X.Connectors 339
50-Pair.Disconnect.Block.with.RJ-21x.Connectors 340
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Trang 1150-Pair.Disconnect.Block.with.RJ48X.Connectors 341
50-Pair.Disconnect.Block.with.RJ48X.Connectors.Modified.for.Shielded.Applications 341
50-Pair.Disconnect.Block.with.RJ48C.Connectors 342
50-Pair.Disconnect.Block.with.RJ45.Connectors 342
50-Pair.Disconnect.Block.with.ARMM.Stub 343
50-Pair.Disconnect.Block.with.ARMM.Stub.and.RJ-21x.Connectors 343
900-Pair.Disconnect.Frame.with.ARMM.Stub 344
Mounting.Frames 19".Mounting.Frame 345
23".Mounting.Frame 345
35.5".Mounting.Frame 345
Accessories 50-Pair.Block.Center.Mount.Label.Holder 346
Clear.Dust.Cover 346
Labeling.Strip.for.Dust.Cover 346
Hinged.Dust.Cover 346
Stand.off.Bracket 346
Disconnect.Plug 347
Flat-Top.Dummy.Plugs 347
Building.Entrance.Terminals NEMA.4x-Classified.Fiber.Wall.Mount.Box 348
NEMA.Fiber.Demarcation.Box.(FDB) With.Pigtails 351
With.Multifiber.Cable 352
High-Density.5-Pin.Protection 25-Pair 355
50-Pair 355
100-Pair 355
5-Pin.Indoor.and.Outdoor.Enclosed.Building.Entrance.Terminals 25-Pair 357
50-Pair 357
100-Pair 357
10-Pair.Magazine.Protection 25-Pair 359
50-Pair 359
100-Pair 359
10-Pair.Magazine.Protection.Indoor.and.Outdoor.Enclosed.Building.Entrance.Terminals 100-Pair.Indoor 361
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Trang 12Communications.Modules
CPU 371
Alarm.Card 371
Singlemode.to.Multimode.Optical.Conversion.Line.Card 372
10/100Mbps.Optical.Ethernet.Conversion.Line.Card 374
Gigabit.Ethernet.Line.Card 376
OptEnet™.Work.Station.Media.Converters Introduction 379
Mouse.Port.Power.Option 380
Wall.Outlet.Power.Option 380
USB.Port.Power.Option 380
RJ45.Patch.Cords 380
OptEnet™.Single-Mount.Solution Introduction 381
Application 382
Singlemode.to.Multimode,.10-622Mbps 383
10/100Mbps.Optical.Ethernet.Conversion 383
1000Mbps.Optical.Ethernet.Conversion 383
Wall.Mount.Bracket 383
Specifications 384
Other.Enterprise.Solutions Power.Distribution.Products 385
Digital.Signal.Cross-Connect.Products 385
Outside.Plant.Cabinets.for.Campus.Applications 386
Sound.and.Video.Solutions.for.Auditoriums.and.Surveillance.Applications 387
Data.Management.and.Access.Products 387
Megabit.Modem.702G2 388
Indoor.Wireless.Coverage.Solutions 389
Index 391
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Trang 14ADC’s TrueNet® Structured Cabling System is the integrated portfolio of high-performance copper and fiber cable, connectivity, and cable management products from ADC and KRONE The precisely tuned TrueNet system exceeds TIA/EIA standards and provides a clear path for uninterrupted data throughput within the entire network
True End-to-End Solutions
The TrueNet system delivers proven cable, connectivity, and cable management solutions for fiber,
10 Gigabit Ethernet over UTP, and Category 6/5e from the data center to the desktop
Category 6 & 5e Ethernet
ADC's TrueNet Category 6 & 5e
patch panels, patch cords, and
cable are impedance matched to
deliver extra bandwidth and better
attenuation with zero bit errors.
Work Area Solutions
ADC’s high-performance modular jacks are field-configurable for flush, surface, and furniture mounting applications.
Cable Management
Protect, route, and manage network cables for optimized signal integrity with ADC’s portfolio of cable management, labeling, and racking solutions.
Copper Cables
ADC’s high-performance riser and
plenum cable supports backbone
and horizontal applications TrueNet
copper cables feature patented
AirES ® technology to enhance
signal speed and strength while
minimizing cable size and crosstalk.
Media Conversion
Expand optical networks while extending legacy copper infrastructure ADC’s OptEnet ™ Media Converters transition and protect critical Ethernet, OC-12, and GigE circuitry throughout the network.
Fiber cables including: cost
saving interlocked armored
versions, plenum rated dry
loose tube small diameter
Indoor/outdoor cables, single
mode reduced water peak, and
standard or laser optimized
multimode configurations.
NEW
Fiber Connectivity
In the backbone or to the desk,
optical networks achieve peak
performance with ADC’s high
density frames, fiber connectors,
patch cords, raceways, and
panels featuring integrated
cable management and bend
radius protection.
NEW
Power-over-Ethernet
Deliver power to VoIP phones,
Wi-Fi access points, and other
IP devices over the local area
network with ADC’s IEEE
NEW
Applications Solutions
A global network infrastructure leader, ADC offers complete solutions for data centers, storage area networks, central offices, campuses, wireless and Wi-Fi networks, and other high- performance applications.
NEW
Trang 15With TrueNet, you can push networks to the performance edge Innovative products that exceed industry standards support advanced applications such as 10GigE over UTP, VoIP, and Wi-Fi today and tomorrow Building upon a high-performance TrueNet infrastructure foundation, network managers and designers are assured a flexible evolution path to next-generation technologies and services.
A Tradition of Innovation
With thousands of patents worldwide, ADC continually invests in innovation to support emerging technologies and to enhance our customers’ network operations In fiscal 2000 to 2003, ADC invested approximately 13% of net sales to fuel research and development
For example, ADC’s innovative CopperTen™ solution is the world’s first Augmented Category 6 system
to deliver all internal requirements of Category 6 while achieving 18 Gb/s capacity as measured
by Shannon’s Law with extended frequencies up to 625MHz To achieve these high-performance specifications, CopperTen incorporates patent-pending features including a unique oblique filler that minimizes alien crosstalk (interference from adjacent cables)
The company’s patent-pending AirES® technology is a critical element in the TrueNet CopperTen, Category 6, and Category 5e solutions and results in the first and only cable design to increase signal speed and strength while simultaneously minimizing crosstalk AirES technology utilizes air as a conductor insulator, eliminating the bulky fillers and extra bonding that increase cable weight, reduce flexibility, and require extra space
Setting the Standards
ADC’s TrueNet solutions meet or exceed all major cabling standards We are actively establishing and advocating next-generation technologies and standards worldwide through work with these leading industry organizations:
TIA: Telecommunications Industry Association EIA: Electronic Industries Alliance
IEEE: Institute of Electrical and Electronic Engineers BICSI: Building Industry Consulting Service International MEF: Metro Ethernet Forum
ISO: International Organization for Standardization IEC: International Electrotechnical Commission
Trang 16Mission-critical networks rely upon trusted TrueNet infrastructure Built and tested in ADC’s world-class
facilities, TrueNet is backed by the industry’s only true Zero Bit-Error Warranty that guarantees signal
integrity and throughput
World-Class Manufacturing Expertise
ADC is committed to consistently delivering the highest possible quality in all that we do A registered
TL9000 and ISO9000:2000 manufacturer, ADC is certified in 21 categories—the largest number of
registrations of any ISO-certified company Additionally, ADC facilities are approved to self-certify
products for compliance with UL Safety Standards
A best-in-class manufacturer, ADC operates more than 385,000 square feet of manufacturing space
in the Americas
Backed by the TrueNet Warranty
ADC’s TrueNet system is backed by an industry-leading warranty that not only addresses physical
component performance, but also data throughput Cable and connectivity solutions are tuned to
eliminate impedance mismatches to standards five times more rigorous than industry specifications
As a result, TrueNet optimizes network speed by eliminating data retransmissions
The TrueNet warranty covers all aspects of the structured cabling system for horizontal and backbone
networks that support voice and data A 20-year all-inclusive industry standards compliance warranty
addresses all parts, labor, and technical support And for certain TrueNet product categories, an
additional 5-year throughput warranty guarantees zero bit-error rate performance throughout the
structured cabling channel
Trang 17Founded in 1935, ADC has served the communications industry for more than half a century and today
is a leading supplier of global network infrastructure products and services In 2004, ADC acquired the KRONE Group, a leading global supplier of copper and fiber-based connectivity solutions and cabling products The integration of these two companies positions ADC with annual sales exceeding $1 Billion and an employee base exceeding 7000 professionals worldwide
The company conducts business in more than 100 countries and operates primary facilities in Minneapolis, Minnesota; Denver, Colorado; Sidney, Nebraska; Bennington, Vermont; Santa Teresa, New Mexico; Delicias and Mexico City, Mexico; Berlin, Germany; Glenrothes, Scotland; Chelthanham and Richmond, Great Britain; Shanghai, China; Berkley Vale, Australia; Cotia, Brazil; and Bangalore, India.Customers around the world include leading communications service providers and enterprises of all types including Bank of England, BellSouth, Bloomberg, British Telecom, Chase Manhattan, Cingular, CitiBank, Deutsche Telekom, Glaxo Smith Kline, Hong Kong Telecom, Morgan Stanley, Nextel, Reliance Telecom (India), Qwest, T-Mobile, SBC, Seagrams, Sprint, Verizon, and many others
Learn More About TrueNet Structured Cabling Solutions
Within this catalog, you’ll find complete descriptions and ordering information for the most popular TrueNet Structured Cabling Solutions Because we continually enhance our product portfolio and our specifications, we encourage you to visit our web site or contact an ADC representative to keep pace with the latest innovations
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Technical Reference
Industry Standards 6
How to Choose the Right Cabling Infrastructure 19
10Gigabit Ethernet over UTP 22
Choosing the Right Ethernet Patch Panels 26
Designing the Optimized Data Center 31
Key Fiber Optic Cable Management Concepts 36
Trang 19Imagine trying to link railroads together that are based on different gauges, to build anything with
a combination of metric and American parts, to type a letter on something other than a QWERTY keyboard, or to wire a building for voice, data and video if all the components had different requirements.The key to simplifying all these tasks is standardization Bringing standards to the wiring and cabling segments of the building industry has enabled the industry to define a common infrastructure that allows many companies to provide common components Strict adherence to these standards benefits everyone
ADC’s Position on Standards
ADC is a strong proponent of standards-based design for structured cabling systems A strictly defined set of standards helps ensure uniform application of physical layer networking products and creates a usable infrastructure for communications networks
However, ADC also believes that by nature, the standards evolve into a lowest-common denominator indicator of performance In order to accommodate various competing interests, a significant amount
of “flexibility” gets built into the allowable tolerances The cumulative effect of these tolerances can result in structured cabling channels in which different components can have radically different electrical
Industry Standards
The Benefits of Standards
Telecommunications Rooms
Horizontal Cabling
Work Area
Entrance Facilities and Equipment Rooms
Backbone Cabling (Interbuilding)
Backbone Cabling (Interbuilding) The TIA/EIA-568-B Series standard defines a typical,
generic telecommunications cabling system.
Intermediate Cross-Connects Telecommunications Rooms
Main Cross-Connect
Trang 20The entrance facility provides a connection point between the outside plant facilities—whether it is
public network services, private network customer premises or a combination of both—and the interior premises cabling Products used in this area include cables, connecting hardware, special protection
devices and other connecting hardware
The demarcation point separating the service provider’s cabling and the customer’s cabling may be
part of the entrance facilities Because the location of the demarcation point is determined by state
and federal regulations, the local regulated carrier (telephone service provider) or competitive access
provider should be contacted for detailed information
The primary standards for this area are outlined in TIA/EIA-569-A, Commercial Building Standard
for Telecommunications Pathways and Spaces, and J-STD-607-A, Commercial Building Grounding/
Bonding Requirements
ADC manufactures special overvoltage blocks, protection devices and building entrance terminals
for both fiber and copper cabling for use in this area
Equipment Rooms
The TIA/EIA-568-B Series standard makes a distinction between equipment rooms and
telecom-munications rooms because of the nature of complexity of the equipment they contain However, an
equipment room may alternately provide any or all of the functions of a telecommunications room
Equipment rooms provide a controlled environment to house telecommunications equipment
This equipment may include connecting hardware, splice closures, grounding and bonding facilities
and protection devices, where applicable Switches, routers and other active equipment may reside
in the same rack or cabinet space as the passive cabling infrastructure
In the premises cabling backbone hierarchy, an equipment room may contain either the main
cross-connect or the intermediate cross-connect The equipment room may also contain network trunk
terminations and auxiliary terminations that are under the control of the premises cabling administrator
The primary standards for this area are outlined in TIA/EIA-569-A, Commercial Building Standard
for Telecommunications Pathways and Spaces
ADC manufactures a wide variety of fiber and copper patch panels, termination blocks and cable
management solutions that are well suited for this area
Telecommunications Rooms
Telecommunications rooms may provide various functions for the cabling system and because of this
they are treated as a distinct subset in the cabling system hierarchy
The primary function of a telecommunications room is to provide a termination point for horizontal
cable distribution, that supports all voice, data, video and other applications requiring structured
cabling The telecommunications room also serves as a termination point for backbone cable
The cross-connection of these two parts of the premises cabling is an important function of the
telecommunications room Cross-connections may be accomplished using jumper wires or patch cords,
and ADC products handle both methods equally well
Telecommunications rooms may also house cross-connects for different portions of the backbone
cabling system These cross-connects are sometimes used to tie different rooms together in a ring, bus
or tree configuration
Industry Standards
Trang 21be located in a telecommunications room.
The TIA/EIA-568-B Series standard details cable routing and installation practices for telecommunications rooms to prevent cable stress and to properly organize and manage cables
Additional standards for this area are outlined in TIA/EIA-569-A, Commercial Building Standard for Telecommunications Pathways and Spaces
ADC manufactures a wide variety of blocks and patch panels capable of providing termination and cable management for a wide range of wire sizes and cable types found in telecommunications rooms
For More Information
Although this catalog presents a brief overview of information contained in the standard, persons involved with the installation and maintenance of structured cabling systems should obtain a copy of the complete standard and/or related standards
Industry Standards
FUSE
ON OFF
Work Area Work Area Cable
Telcom Outlet Station Field Equipment Field
Transition Point (Optional)
7M
TIA/EIA-568-B Series Horizontal Channel/Link Model
ISO/IEC 11801 Horizontal Channel/Link Model
Trang 22Technical standards that address various aspects of commercial cabling include:
• TIA/EIA-568-B Series, Commercial Building Telecommunications Cabling Standard
• TIA/EIA-569-A, Commercial Building Standard for Telecommunications Pathways and Spaces
• TIA/EIA-570-A, Residential Telecommunications Cabling Standard
• TIA/EIA-606, Administration Standard for the Telecommunications Infrastructure
of Commercial Buildings
• J-STD-607A, Commercial Building Grounding/Bonding Requirements
For information on obtaining copies of any of these standards, please contact:
Global Engineering Documents
800.854.7179 or 303.397.7956
www.global.ihs.com
ISO 11801 (International Standard)
www.iso.ch
NEC (National Electrical Code),
written and distributed by the National Fire Protection Association (NFPA)
www.NFPA.org
A discussion of standards affecting the design and layout of a standards-based data center, as well as
ADC’s recommendations for assuring that your data center supports the demands of, and grows with,
your network, follows on page 28
Industry Standards
Trang 23Industry Standards
Interconnection vs Cross-Connection
Trang 24Backbone cabling provides interconnections between the telecommunications rooms, equipment
rooms and entrance facilities Backbone cabling consists of cables, main and intermediate cross-connects, mechanical terminations and patch cords or jumper wires Backbone cabling can be within buildings
(intrabuilding) or between buildings (interbuilding)
The TIA/EIA-568-B Series standard requires that backbone cabling use a hierarchical star topology
Each horizontal connect in a telecommunications room is cabled to an intermediate
cross-connect and then to a main cross-cross-connect (or directly to a main cross-cross-connect), with no more than two
hierarchical levels of cross-connect in the backbone cabling These cross-connects may be located in
telecommunications rooms, equipment rooms or entrance facilities
Recognized cables for use in backbone cabling include the following:
100 Ohm UTP (unshielded twisted pair) cable (four or more pairs)
150 Ohm STP-A (shielded twisted pair) cable
62.5/125µm, multimode optical fiber cable
50µm, multimode optical fiber cable
Singlemode optical fiber cable Backbone cabling uses a hierarchical star topology.
Intermediate Cross-Connects Telecommunications Rooms
Main Cross-Connect
Trang 25Horizontal cabling extends from the work area telecommunications outlet to the horizontal cross-connect
in the telecommunications room Horizontal cabling includes the cables, the telecommunications outlet
in the work area, the mechanical termination and patch cords or jumper wires and cable management solutions located in the telecommunications room
• Voice service
• Internet service
• Video and conferencing services
• Premises switches, routers and hubs
• Data communications to support fax, storage servers, network printers
• Local area networks (LANs)
• Life safety systems such as security, fire alarm and door entrance
• Automation systems such as lighting and HVAC control
• Other building signaling systems, such as CCTV, nurse call, paging, audio and others
Relocation of offices is a common occurrence in enterprises Horizontal cabling is often one of the more dynamic areas of the premises system However, after installation, horizontal cabling is often much less accessible than backbone cabling, and the time, effort and skills required to change or modify it can be extremely high Horizontal cabling should be designed with the intention of minimizing ongoing maintenance and relocation so that moves, adds and changes can be accomplished from the telecom-munications and equipment rooms Additional consideration should be given to accommodating a wide range of applications in order to reduce the necessity of changes to the cabling as users’ needs evolve.Care should be given to separate telecommunications cabling from electrical facilities that generate high levels of electromagnetic interference (EMI) Fluorescent lights, copy machines, heating/cooling devices,
Intermediate Cross-Connects Telecommunications Rooms
Main Cross-Connect
Trang 26150 Ohm STP-A (shielded twisted pair) cable
62.5/125µm, multimode optical fiber cable
50µm, multimode optical fiber cable
Trang 27in the TIA/EIA-568-A standard.
However, the length of cords used in the work area are assumed to be no longer than three meters (approximately 9.8 feet) in establishing the maximum length for the horizontal cabling of 100 meters total, and the cords should meet or exceed the requirements for patch cords outlined in the standard
Common patch cords used in the work area have identical connectors on both ends, but cords may vary widely in design depending on the application Often adapters are required to accommodate specific equipment
Types of adapters include:
• Special adapters to mate an equipment connector
to the telecommunications outlet when they are different styles (e.g baluns)
• A “Y” adapter to branch two services off of a single cable
• Adapter which transpose pairs for compatibility
• Adapters for equipment that requires termination resistors
Industry Standards
These and other types of adapters can have a detrimental effect on the transmission performance
of the telecommunications cabling system It is important to consider the compatibility of these adapters
Intermediate Cross-Connects Telecommunications Room
Main Cross-Connect
Trang 28Do pull cables to minimize the distance
of the run and eliminate large loops.
Do bundle cables in a neat, orderly fashion, and use hook-and-loop ties.
Do make sure that pair twists are tained within 1/2" (12mm) or less of the termination point.
main-Do follow recommendations for cable bend radius In spaces with UTP terminations, cable bend radius should not be less than four-times the cable diameter for horizontal cable, and should not be less than ten times the cable diameter for multipair cable.
Don’t exceed 110 Newton's (25 lb/f)
of pulling forces when running cables.
Don’t cinch cable bundles too tightly,
or use plastic cable ties.
Don’t untwist pairs when terminating.
Don’t ever bend or kink cable too sharply.
Cable Diameter + d
Radius = 4 x d
Trang 30White/Blue Blue/White White/Orange Orange/White White/Green Green/White White/Brown Brown/White White/Slate Slate/White Red/Blue Blue/Red Red/Orange Orange/Red Red/Green Green/Red Red/Brown Brown/Red Red/Slate Slate/Red Black/Blue Blue/Black Black/Orange Orange/Black Black/Green Green/Black Black/Brown Brown/Black Black/Slate Slate/Black Yellow/Blue Blue/Yellow Yellow/Orange Orange/Yellow Yellow/Green Green/Yellow Yellow/Brown Brown/Yellow Yellow/Slate Slate/Yellow Violet/Blue Blue/Violet Violet/Orange Orange/Violet Violet/Green Green/Violet Violet/Brown Brown/Violet Violet/Slate Slate/Violet
Tip 1 Ring 1 Tip 2 Ring 2 Tip 3 Ring 3 Tip 4 Ring 4 Tip 5 Ring 5 Tip 6 Ring 6 Tip 7 Ring 7 Tip 8 Ring 8 Tip 9 Ring 9 Tip 10 Ring 10 Tip 11 Ring 11 Tip 12 Ring 12 Tip 13 Ring 13 Tip 14 Ring 14 Tip 15 Ring 15 Tip 16 Ring 16 Tip 17 Ring 17 Tip 18 Ring 18 Tip 19 Ring 19 Tip 20 Ring 20 Tip 21 Ring 21 Tip 22 Ring 22 Tip 23 Ring 23 Tip 24 Ring 24 Tip 25 Ring 25
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Pair
Number Cable Color Coding Color Tip & Ring Positions 50-Pin 66 or 110 Positions
Trang 31For modular RJ45 patch cords, 568A or 568B wiring are both usable, regardless of which wiring scheme
is used in the horizontal cabling
A crossover cord is wired T568A on one end and T568B on the other, and is typically used for peer
to peer networking or to connect stacked hubs or switches Many active devices now have a switch that crosses one port, negating the need for a crossover cable
Wiring schemes also raise a variety of questions:
Q: What’s the difference between T568A and T568B?
A The only difference is the positioning of the Green and Orange pairs of wires
Q: Is there a performance difference between T568A and T568B?
A: No Both wiring schemes have to meet the same performance criteria
Q: Why two schemes?
A: The reason is outside of the scope of this discussion but it is related
to old telephone legacy issues All you really need to know is that
Wiring to Standards
TIA/EIA T568A Standard
TIA/EIA T568B Standard
Pair 3 Pair 1 Pair 2
RJ45 Jack Positions T568B
Pair 4
1 2 3 4 5 6 7 8
W-O O W-G BL W-BL G W-BR BR
Pair 2 Pair 1 Pair 3
RJ45 Jack Positions T568A
1 2 3 4 5 6 7 8
W-G G W-O BL W-BL O W-BR BR
Pair 4
TIA/EIA T568A Standard
TIA/EIA T568B Standard
Pair 3 Pair 1 Pair 2
RJ45 Jack Positions T568B
Pair 4
1 2 3 4 5 6 7 8
W-O O W-G BL W-BL G W-BR BR
Pair 2 Pair 1 Pair 3
RJ45 Jack Positions T568A
1 2 3 4 5 6 7 8
W-G G W-O BL W-BL O W-BR BR
Pair 4
Trang 32A Brief History of Cabling
Over the past 30 years there have been unprecedented advances in networking technology Since the
early 1970s with the development of Ethernet, rates for point-to-point data transfer have increased by
a factor of ten thousand From one Mb/s StarLan to 10 Gb/s Ethernet, the steady increase in bandwidth has been fueled by an ever increasing demand for more: more speed, more applications, more memory and more devices
Demand for faster speeds comes from continual increases in processor capability and advanced
operating systems that enable development of new applications These applications and their associated devices create more network usage and congestion, driving demand for more bandwidth The need for this additional bandwidth is seen first at network bottlenecks When a section of the network becomes
a bottleneck, network equipment, such as Ethernet switches and servers, are replaced with the next
generation of equipment with faster processors, more memory, improved operating systems and the
inherent ability to run more complex applications
Over time, network equipment speeds outpace the infrastructure that connects the devices, for
example; in the transition of 10Base-T to 100Base-TX, for example Networks with category 3 cabling
systems could support the first few generations of switches and computers that supported 10 Mb/s
Ethernet over 100 meters With the introduction of the 100Base-TX protocol, bandwidth limitations
between devices were removed However, category 3 cabling was insufficient to support the 10x
increase in bandwidth, which led to the development of category 5 cabling to support 100 Mb/s over
100 meters
Ignoring category 4, which came and went quickly, network planners faced a decision on which cabling system to install At that time, the majority of networks operated with 10Base-T network devices Yet
category 3 cabling would not support the emerging 100Base-TX protocol The good news, however,
was that category 5 would run 100Base-TX and was backward compatible with category 3 In other
words, any application designed for category 3 (10Base-T) would run just as well, if not better, on
category 5 cabling systems The logical choice was to install category 5 in anticipation of applications
requiring 100Base-TX
Selecting the Infrastructure: Follow the Lead of IEEE
The same scenario faces network planners today as cabling systems are designed to withstand multiple, replacements of active equipment Most active network equipment, including computers, servers,
Ethernet switches, routers and hubs, has a maximum useful life of three to five years before it becomes obsolete In contrast, structured cabling historically has a useful life of 10 to 15 years Therefore the
structured cabling you install today must outlive at least three generations of networking equipment
upgrades
The challenge is how to determine what types of active equipment will exist in three product
generations; the answer can be found with IEEE This organization consists of networking equipment
manufacturers such as Cisco, Nortel, Juniper and others that look at the future of networking, and
develop solutions for future product generations Using IEEE standards as a guide, it is possible to see
the direction for both active equipment and cabling requirements for the next few generations
IEEE has already released
standards for 10GbE
over fiber and over short
range copper (CX4), and
is rapidly progressing
with IEEE 802.3an,
10GbE over un-shielded
twist pair copper (UTP),
with ratification expected
How to Choose the Right Cabling Infrastructure
IEEE Standards Activity
IEEE 802.3z Gigabit Ethernet over Fiber Released 1998 IEEE 802.3ab 1000Base-T (Gigabit Ethernet over UTP) Released 1999
IEEE 802.3ak 10GbE over short range Copper (CX4) Released 2003 IEEE 802.3an 10Gbase-T (10GbE over Copper) July 2006 (Estimate)
Trang 33Focus on the Critical Decision Criteria
The question remains: with all the fiber and copper cabling choices at your disposal, which do you install today? There is no simple answer, because each network is unique Beware of one-size-fits-all solutions as they cannot possibly account for the infinite number of variables you must consider when selecting your cabling infrastructure
As you make your cabling infrastructure decisions, focus on the following two criteria: bandwidth requirements and time The following are just three possible scenarios based upon very different network requirements:
Scenario 1: You need 10 GbE right now If this is the case, choose 10GbE over fiber It will be
more expensive than copper, due to media conversion and more expensive ports on equipment Yet remember the IEEE 802.3an standard will not be released until July 2006, and there will be a delay before the first solutions hit the market following the release of the standard
Scenario 2: You are not sure what to do; you occupy space on a short-term lease, or you are
concerned about the current state of the standards In this case, the logical choice is a category 6
cabling solution You may not be in the building long and standards for Augmented category 6 are not final Once the standard is released, it looks like category 6 will support 10GbE at the shorter distance
of 55 meters, just in case you do require 10GbE in the near term
Why is category 5 not a good choice in this scenario? In 2005, the dominant UTP cabling standard for new installations shifted from category 5e to category 6 In addition, category 5e is not recognized by IEEE or TIA to support 10Gbase-T because category 5e cannot support 10GbE for any practical distance There were early announcements on 10GbE running on category 5e; these tests were only made on single runs of cable in a laboratory environment, not on actual installations In actual installations the noise generated by adjacent cables (alien crosstalk) is too great to allow 10GbE transmission for any reasonable distances over category 5e cabling
Scenario 3: Building space is on a long term lease or the building is owned; bandwidth requirements
are substantial Choose Augmented category 6 History says your investment will pay off in the long
term Augmented category 6 will be more expensive than category 6, however, the installation time and cost will be virtually the same For this scenario, Augmented category 6 offers a cabling system that will be in service for at least three generations of active network gear In the scope of any networking
How to Choose the Right Cabling Infrastructure
Trang 34IEEE Designation Bandwidth Distance Common ADC TrueNet ® Solutions
802.3ab 1000Base-T 1000 Mb/s 100 meters Desktop Computing • Category 5e and 6
• CopperTen Augmented Category 6
802.3z 1000Base-SX 1000 Mb/s 220 to 550 meters Enterprise backbone • Laser Optimized
Multimode Fiber 1000Base-LX 1000 Mb/s 5 Kilometers WAN, MAN • Singlemode Fiber 802.3an 10GBase-T 10 Gb/s 100 meters (Cat 6a), Data Center, R&D Computing, • CopperTen Augmented
55 meters (Cat 6) High Resolution Video, Category 6
Advanced Desktop Computing • Category 6 802.3ae 10GBase-SR/SW 10 Gb/s 300 meters Data Center and Enterprise • Laser Optimized
Backbone Cabling Multimode Fiber 10GBase-LR/LW 10 Gb/s 10 Kilometers WAN, MAN • Singlemode Fiber
10GBase-LX-4 10 Gb/s 300 meters Data Center and Enterprise • Standard Grade
Backbone Cabling Multimode Fiber 10GBase-LX-4 10 Gb/s 10 Kilometers WAN, MAN • Singlemode Fiber 802.3af Power over 10/100/ 100 meters VoIP, WiFi, RFID, IP Security • Midspan PoE
Ethernet 1000 Mb/s
Choosing the Right Cabling Infrastructure
ADC Total Infrastructure Solutions
ADC manufactures and distributes a complete portfolio of standards-based, technologically superior
solutions that support voice, data, security, audio, video, controls and other building and campus
systems The TrueNet® Structured Cabling Solution provides a complete copper and fiber cable,
connectivity and cable management solution from the entrance facility to the desktop and across the
campus Supported by an exceptional warranty, TrueNet is the choice of network managers worldwide
who operate high-value and mission-critical networks
The chart below shows just a few of the ADC cable solutions used to support common enterprise
applications Integral to each solution are the TrueNet patch panels, fiber frames, connectors, cable
management, termination/splice/storage panels and other products for every unique requirement in the
passive portion of your network
Trang 35For years, fiber has led the Ethernet industry forward in port speed progression So if fiber is one step ahead why doesn’t it replace copper? The answer is quite simple To convert electrons to photons and then back to electrons adds cost (from an active hardware perspective) This makes the cost of fiber optic active hardware as much as six times more expensive per port than the equivalent speed copper UTP solution on Gigabit Ethernet switch ports.
The IEEE develops the electrical parameters needed to run transmission protocols and then gives the TIA responsibility for developing measurable parameters for cable For 10Gigabit Ethernet, IEEE 802.3an Study Group was formed to discuss how best to approach running 10Gigabit transmission over a copper infrastructure The group is composed of representatives from several different aspects
of the networking community, such as chip manufacturers, hardware manufacturers and cabling/ connectivity manufacturers
The 10GBase-T working group discussions include which protocol encoding will be used, how it relates
to the needed bandwidth from the cabling infrastructure (what the frequency range is) and what measurement of Shannon’s capacity is needed to support them The value for the capacity is measured
in bits per second To achieve 10Gbps transmission, a Shannon’s capacity of >18Gbps is required from the cabling solution The additional capacity over the desired data rate is due to the amount of bandwidth used within the active hardware noise parameters (i.e jitter, quantization, etc.)
Shannon’s Law (Capacity)
It is one thing to understand how this law works, but another to meet the much needed channel capacities required to run protocols That being said, the following is the basic formula for understanding how efficiently a cable can transmit data at different rates
Concerning a communications channel: the formula relates bandwidth in Hertz,
to information carrying capacity in bits per second Formally:
Q = B log 2 (1 + S) Where Q is the information carrying capacity (ICC), B is the bandwidth and S is the signal-to-noise ratio This expression shows that the ICC is proportional to the bandwidth, but is not identical to it.
The frequencies needed to support the different proposed encoding schemes (to achieve a full 10 Gigabits) were now extending out as far as 500MHz It quickly became evident that the signal-to-noise ratio within a cabling solution could be predicted, and therefore cancelled out within the active electronics
Trang 36Initial testing on existing Category 6 UTP cable designs quickly showed that the rationale behind reducing
the impact of crosstalk between pairs within a cable could not support alien crosstalk requirements Twist lay variation and controlled distances between the pairs have been standard design practice for achieving Category 6 compliance While the distance between pairs can be controlled within a cable jacket,
it could not be controlled between same lay length pairs on adjacent cables
Testing to Shannon’s capacity on existing Category 6 UTP solutions only yielded results in the 5Gbps
range The results achieved previously did not provide the needed additional throughput to allow for
active electronic anomalies This was a far cry from the desired 18Gbps Therefore the question was
asked: Is there a UTP solution capable of achieving the needed alien crosstalk requirements or would
fiber finally rule the day? The August 2003, meeting of the working group would yield three main
proposals:
1 Lower the data rates to 2.5Gbps for Category 6 UTP This would be the first time fiber would
not be matched in speed and that a tenfold increase in speed would not be achieved
2 Reduce the length of the supported channel to 55 meters from the industry standard 100 meters
for Category 6 UTP This would greatly impact the flexibility of the cabling plant, considering most facilities are designed with the 100 meter distance incorporated into the floor plans
3 Use shielded solutions and abandon UTP as a transport medium for 10Gigabit This would mean
returning to ScTP/FTp type solutions, requiring additional labor, product cost and grounding, as well as space
Alien crosstalk is quite simply the amount of noise measured on a pair within a cable induced from
an adjacent cable This is not only a concern for different twist lay pairs between cables, but more so
between same twist lay pairs between adjacent cables
Example of a center cable being impacted
by the adjacent 6 cables in the bundle.
Example of how cables with same twist lays impact one another.
The star filler used within several Cat 6 cable designs increases and controls the distance between pairs.
While the distance between pairs within the same cable is maintained, the distance between same lay lengths on adjacent cables is still compromised.
Trang 37to support transmission rates that only increased by 2.5 times, or if distance limitations of 55 meters were really worthwhile Would the additional cost of installing a shielded solution outweigh the benefits
in cost for the active components?
The next meeting of the working group would be pivotal in addressing the above questions UTP could very well have reached its limit
How could a UTP cable achieve the desired capacity of >18Gbps and maintain the 100 meter distances
to which the industry has become accustomed while remaining within the normal size constraints?
ADC’s CopperTen™ Solutions present a solution to the 10Gigabit, 100 meter UTP problem
Addressing Pair Separation
With standard Category 6 cable construction, the pair separation within the cable is counter-productive for pair separation between cables
The often-used star filler pushed the pairs within the cable as close to the jacket as possible leaving same pair combinations between cables susceptible
to high levels of crosstalk
In CopperTen cables’ new design, the pairs are now kept apart by creating a higher degree of separation through a unique oblique star filler design Crowned high points are designed into the filler to push the cables away from one another within the bundle This is very similar to rotating a cam lobe
Due to the oblique shape of the star, the pairs remain close to the center, while remaining off-center
as the cable rotates, creating a random oscillating separation effect The bundled cables now have sufficient separation between same lay length (same color) pairs to prevent alien crosstalk
Oblique, elliptical,offset filler, whichrotates along itslength to create an airgap between thecables within abundle
Oblique, elliptical, offset filler, which rotates along its length to create an air gap between the cables within
Trang 38The separation can be better understood through the actual cross section below The unique design
keeps cable pairs of the same twist rate within different cables at a greater distance from one another
than in the past Similar to the patented AirES® technology cable design, air is used between these pairs
This effect is even more dramatic when viewed
from the side of a cable bundle The peaks of the
oblique, elliptical filler (red arrows) are used as
the contact points along the length of the run
These provide the greatest distance between the
actual pairs by vaulting the sides of the ellipse
(yellow arrows) where the pairs are housed
For the purpose of comparison, the Category 7 limit line was used to show the dramatic improvement
in preventing alien crosstalk
This ability to create a future-proofing cable in the CopperTen solution brings up a question as to
the need for standard Category 6 cable, a cable sold and purchased (for the most part) in an effort to
support the next technology leap
The industry now has taken the next leap Copper UTP has been given another lease on life to support
the next future proofing step in a 10Gigabit transport protocol The cost of active hardware will remain
in check and be cost effective for future advancements in data transfer rate speeds
The reduction of alien crosstalk is now greatly improved over the standard Category 6 cable and
the new CopperTen cable The improvements are approximately 20dB better on CopperTen cable than
standard Category 6 cable To put this in perspective: for every 3dB of extra noise there’s a doubling
effect resulting in standard Category 6 cable being more than six times noisier than CopperTen cable
CAT 6 ALIEN CROSSTALK SAMPLE W/CLASS F LIMIT
Trang 39Choosing the Right Ethernet Patch Panels
Category, 5e, 6, or Augmented Category 6? IDC punchdown, or modular? T568A or T568B?
First, let’s ask a few key questions Your answers will help guide you in the decision process
Next, we will briefly discuss each of the most popular options available so you can draw conclusions based on your network needs
Discovery Questions
• What applications are you or do you plan to run in this facility? Take into account not only what you are doing today, but what you probably will be doing tomorrow i.e 10/100Base-T? 1000Base-T? 10G Base-T?
• What type of LAN network are you designing? Data center? Data backbone? Workstation?
• Is the project a new network installation or an addition to an existing network?
• Is the installation being built to expand existing capacity with current data capabilities or is it for new, faster data applications?
Answers to these questions will guide you to a particular cable type, a particular data patch panel, and the means to terminate the cable into the patch panel—whether the terminations into the patch panel involve “punchdown” cable terminations, pre-made telco-type multi-pair cable ends, or standard RJ45 cable ends
The general guidelines for network transmission capabilities segment the data network; data center and data network backbone system applications require the highest level of transmission capabilities, while feeds to work areas generally require a bit less However, all network connectivity should be designed with only the highest network engineering standards available
Category 5e, 6 and 6A Cabling
The Telecommunications Industry Association (TIA) standards group consists of a variety of industry
Trang 40Augmented Category 6 is the cutting edge of UTP cabling It is similar to Cat 6, but is characterized
to 500MHz and is also capable of running 10Gigabit Ethernet protocols of the future Testing
parameters are similar to that of Cat 5e and Cat 6, with the added benefit of compliance to Alien
(Bundled) Crosstalk requirements: ANEXT, AELFEXT, PSANEXT and PSAELFEXT
Definitions of cabling test parameters can be found at http://www.cabletesting.com/CableTesting/
Testing/Definitions/Definitions_Wiremap.htm
Category 7 is a proposed standard for a fully shielded, 4-pair cabling system with transmission
specifications referenced to 600MHz The cable end interface will probably be something other than
the familiar RJ45 connector, mainly to differentiate the Category 7 installation from existing
lower-bandwidth infrastructure Because of the higher costs associated with manufacturing and installing
these shielded products, their scope of usability is extremely limited in North America (<1%)
So, which should you use? There is quite a bit of misleading information in the industry on this subject, the biggest myth being that Category 6 is required to run Gigabit Ethernet over copper (1000Base-T)
However, as of this writing, the TIA recommends Category 6 or Category 5e as the minimum cabling
for new network infrastructure installations
When do I use Category 6 or 6A? Does the application standard (i.e., Gigabit Ethernet, 10G, etc.)
specify Category 6 as a minimal requirement? As of this writing, the TIA and IEEE 802.3an committee
are developing standards for 10 Gigabit Ethernet over UTP This standard will require an Augmented
Category 6 system to run the standard 100 meters length The good news is that Augmented Category
6, as is the case with all TIA standards, will be backward compatible and will have no trouble running
existing applications such as 10/100Base-T and 1000Base-T
The CopperTen™ System is ADC’s version of Augmented Category 6 It provides not only support for
the transmission protocols of today, such as 10/100/1000Mbps, but also that of the future with 10G
It is worth noting that the complexity of Category 6A is transparent to the end user and installer
The products have simply been modified to overcome the shortcomings of standard Cat 6 to achieve
the desired signal to noise ratios, taking into account bundled crosstalk, to achieve all of the current
proposals within the IEEE 802.3an task force
Cable Type Summary
The chart below summarizes the industry standard UTP cable types used in current networking
installations
Choosing the Right Ethernet Patch Panels
In addition to the UTP cabling described above, you should understand the issues of cable shielding,
and stranded versus solid cable