1. Structured Cabling System (SCS)
Seminar
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2. Jonard A. Nollido
Technical Trainer
Structured Cabling
Network Testing
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3. Agenda:
1. Overview of Structured Cabling System
a. SCS Subsystem
b. Transmission Line Diagram
2. Horizontal Subsystem Design
a. Components and types
b. Sample Design
3. Cabling Installation and Practical Applications
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4. IMAGINE LIFE
WITHOUT
STRUCTURED
CABLING
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19. Gasoline
plssss!!!
of
Network Problem
CABLING
RELATED !
Source: BICSI
Jonard A. Nollido Magazine, issue 1999

20. Complete IT System
Cost
Life
Cabling
LAN
PC
Software
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Years

21. Network Investment
LAN
Equipment
Cabling 7%
5%
Intelligent
Workstation
34%
Software
54%
Although cabling represents only 5% of the total network
investment,
A Structured cabling systems will outlive most network
components.
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22. - A set of cabling and connectivity products
that integrates the voice, data, video, and
various management system of a building
(such as safety alarms, security access,
energy system, etc.)
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23. Intelligent Building Systems
BAS
Telecomms
Office
Automation
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Structured
Cabling
System
Building
Automation

24. SCS Block Diagram
Planning
Documentation
YES
Design
Pass
Installation
Testing
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NO

25. Subsystem Architecture
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26. WORK AREA SUBSYSTEM
Work Area
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27. HORIZONTAL SUBSYSTEM
Horizontal
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28. RISER BACKBONE SUBSYSTEM
Riser Backbone
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29. ADMINISTRATION SUBSYSTEM
Adminis tration
Adminis tration
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30. EQUIPMENT SUBSYSTEM
MDF
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Equipment
S ubs ys tem

31. CAMPUS SUBSYSTEM
Campus Backbone
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32. Transmission Line
Diagram
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33. Server
1 Gigabit Switch
Jack Panel
(Category 6 rated)
Patch Cord
(Category 3 rated)
Telecom Outlet
(1 Gigabit LAN Card)
(Category 6 rated)
Category 6 maximum performance = 1,000 Mbps
Category 3 maximum performance = 10 Mbps
10 Mbps performance
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Category 6 UTP
Patch Cord
(Category 6 rated)

34. CAT 5e
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CAT 6
CAT 6A
(10G cable)

35. -e (electron)
D2
D1
Solutions:
Conditions:
D1 = D2 = Diameter
@ frequency 1 = 10,000 bits per second
@ frequency 2 = 1,000,000 bits per second
frequency 1 >>>> frequency 2
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1) Coat the conductor with
Ag (silver)

36. Can and marble analogy
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37. Jonard A. Nollido

38. -e (electron)
D2
D1
Solutions:
Conditions:
D1 = D2 = Diameter
@ frequency 1 = 10,000 bits per second
@ frequency 2 = 1,000,000 bits per second
frequency 1 >>>> frequency 2
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1) Coat the conductor with
Ag (silver)
2) Increase conductor size

39. Server
1 Gigabit Switch
Jack Panel
(Category 6 rated)
Patch Cord
Telecom Outlet
1,000 Mbps performance
(1 Gigabit LAN Card)
(Category 6 rated)
Category 6 maximum performance = 1,000 Mbps
(Category 6 rated)
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Category 6 UTP
Patch Cord
(Category 6 rated)

40. Agenda:
1. Overview of Structured Cabling System
a. SCS Subsystem
b. Transmission Line Diagram
2. Horizontal Subsystem Design
a. Components and types
b. Sample Design
3. Cabling Installation and Practical Applications
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41. Horizontal Subsystem Design
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42. Objectives
• Know components in the Horizontal
• Understand both standards based horizontal design
and requirements
• Determine the number of work areas for an office
building
• Determine the number and types of TO’s for an office
building using a set of building prints
• Determine the types and lengths of cable for each
distribution zone
• Order the cable and other material for the horizontal
subsystem
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43. Factors to consider
• The horizontal may consists of Copper, Fiber or both
• The (HC) FD to TO distance for copper is typically
limited to 90m
• CAT5E or above cable with the Modular Jack at the
TO is recommended by standards
• Fiber to the Desk (FTTD) is an option
• The Horizontal design may be ‘Home-Run’ or ‘Zone’
design
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44. Horizontal Cabling System
•
Horizontal Cable and Connecting Hardware also call "horizontal cabling".
•
Horizontal Cabling provide the means for transporting telecommunications
signals between the TO in the WA and the FD/HC in the TR/TC. These
components are the "contents" of the horizontal pathways and spaces.
•
The term “horizontal” is used since this portion cabling system cable runs
horizontally along the floor(s) or ceiling(s) of a building.
Horizontal Cabling
FD/HC
CP
Horizontal Cabling
Subsystem
(90 meter)
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TO
Work
Area
Cabling
Terminal
Equipment

45. Horizontal Cabling Topology
Telecommunication Room
Minimum: Cat 5e
Optional: OM1/2/3
CP
Data
TP
Voice
Minimum: Cat 3
5 meters
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90 meters
5 meters

46. Horizontal Media Considerations
•
•
•
UTP cabling shall be of 4-pair, 23 or 24 AWG solid conductors.
Fiber is typically a duplex zip-cord type.
The recognized media are:
– 100Ω twisted-pair cable (Un-shielded and Shielded)
• Minimum requirement : Cat 3 / Class C for Voice applications
• Minimum requirement : Cat 5e / Class D for Data applications
– Multimode optical fiber cable (OM1, OM2, and OM3)
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47. Balanced Cable Connectors Considerations
•
•
•
•
•
Two methods for terminating UTP cable:– Patch panels
– Cross connects
Connecting hardware performance shall match the
media performance.
Horizontal cabling termination can be wall, cabinet
or rack mounted, or a combination of the two.
Designers need to consider the pros and cons of
the connecting hardware.
– Density - Space availability and location of
mounting
– Performance – interconnects out-perform
cross connects
– Administration – easier MAC, flexibility in
patching
– Cost – interconnects cost less
Install plenty of cable support and management
panels to dress cable to the termination port.
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Patch Cord with
110XC Plug
Modular Jacks
110XC Cross-connect
Modular Plug
Patch Cord with
Modular Plug
Patch Panel with
Modular Jacks

48. Optical Fiber Connectors Considerations
• A simplex connector may be used for the termination of horizontal
fiber optical cables.
• A duplex presentation should be used for maintaining the correct
polarity of transmit and receive optical fibers by either keying, or
labeling of the adapters as position A and B.
• SFF connector can be considered for high density requirement.
• To determine an appropriate fibre connector, the designer needs to
know :– Which fibre connectors are specified by the industry standards.
– What optical fibre connectors are used on the transceiver (equipment).
– Is it necessary or preferable that the connector is similar to that of the
transceiver (equipment).
SC (Subscriber connector)
ST
SFF (MT-RJ/LC connector)
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49. Horizontal Cabling Pathway System
Design Considerations
•
It is important to consider the design’s ability to:
– Accommodate cabling changes.
– Minimize occupant disruption when horizontal pathways are accessed.
•
The horizontal pathway system design must:
– Facilitate ongoing maintenance of horizontal cabling.
– Accommodate future additions and changes in cabling, equipment and services.
•
•
The pathway design should allow for a minimum of 2 cable runs per
individual WA.
The major horizontal pathways types are:
–
–
–
–
–
–
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Under-floor System
Access Floor System
Conduit Systems (Trunking, Conduit, Pipe, etc.)
Cable Tray and Channels
Ceiling Pathways
Perimeter Pathways

50. Under-floor Duct Systems
•
An under-floor duct system is a
network of distribution and feeder
ducts that are embedded in
concrete at the time of building
construction.
•
Distribution ducts are used to
route the cable from the feeder
duct to the WA.
•
Feeder ducts/ are used to route
the cable from the distributor to
the distribution ducts.
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51. Cellular Floor
•
•
A cellular floor system is a network of distribution and feeder cells that are
embedded in concrete at the time of building construction.
It is very similar in design and scope to the under-floor duct system
including the distribution and feeder ducts/cells, after-set and pre-set inserts
and service fittings and junction boxes.
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52. Cellular Floor
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53. Raised/Access Floors
•
•
•
Access Floors are raised floors comprised of modular floor panels supported by
pedestals; generally ideal for ERs, computer rooms and general office areas. They
can be designed for new construction or retrofit.
Plenum or LSZH cable may be needed when the raised floor forms a part of the
return air system.
Cable tray, trunking, ducting, etc. can be installed to route cable under the access
floors.
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54. Conduit/Pipe Systems
•
Conduit system types include:
– Steel conduit systems
– Plastic conduit systems
•
Major considerations:
–
–
–
–
•
When outlet locations are permanent,
Where device densities are low, and
Flexibility is not required.
Local codes require it.
Design considerations:
–
–
–
–
No section of conduit should be longer than 15 m between pull points.
No section of conduit shall contain more than two 90° bends between pull points
Any reverse (U-shaped) bend shall be made accessible with a pull box.
The inside radius of a bend in conduit shall be at least 6 times the internal
diameter.
– Conduits protruding through the floor in the TR shall be terminated at least 75
mm above the floor surface
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55. Cable Trays and Channels
• Cable trays and channels are rigid structures for the containment of
telecommunications cables.
• They may be installed above
or below the ceiling, or below an
access floor, and in accordance
with the applicable electrical
code.
Ladder Cable Tray
Ventilated Cable Tray
Channel Cable Tray
Mesh Cable Tray
• Cables are pulled or laid in
place after the pathway has
been installed.
Jonard A. Nollido

56. Ceiling Pathways
•
•
•
•
Ceiling pathways are typically located above drop ceilings with removable
panels.
Installations can be in both plenum and non-plenum spaces.
Ceiling pathway may use a basket, cable tray, trunking and conduit, JHooks, D-rings or Catenary wires.
When a cable tray is used in the ceiling area, trunking from the tray to the
outlets is required unless loose wiring is permitted by standards or
regulations.
J-Hooks
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57. Horizontal System Design
•
•
•
•
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Determine the number of WAs
Determine design type, home run or zone
Determine the Horizontal channel design, Crossconnect, CP, MUTOA,
Determine cable lengths and components required

58. Determine the Number of Work Areas
Standards recommendations
• Office Environments TIA/EIA 9sqm (100sq ft), ISO 10sqm per WA
• Min 2 x CAT5E(Min-spec) outlets per WA
• BAS and Wireless need to be considered
Stairs
Telecomms Room
TO’s
Office
Floor Plan showing Telecommunications Outlets
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59. Determine Distribution Design Type
Home Run method
• TO’s connected directly to patch panel in TR
• Example 16 x UTP to TO’s
16 x UTP
24-Port Hub
24-Port Hub
1100D3
1100GS3-48
1100D3
1100GS3-48
1100D3
1100GS3-48
1100D3
1100GS3-48
1100D3
1100GS3-48
1100D3
1100GS3-48
1100D3
Vertical
1100GS3-48
DS Cable
Manager
Vertical
DS Cable
1100D3
Manager
1100GS3-48
1100D3
1100GS3-48
1100D3
1100GS3-48
1100D3
4 x UTP
4 x UTP
4 x UTP
4 x UTP
1100GS3-48
1100D3
1
2
8
1
8
1
8
19x6-inch Universal Rack
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3
8
1
1
4
1
3
2
8
1
8
1
8
3
8
1
1
4
1
2
8
1
8
1
8
3
8
1
1
4
1
2
1
8
1
8
1
8
1
8
4

60. Determine Distribution Design Type
Zone method – Consolidation Points
• Consolidation Point connected to patch panel at TR
• TO’s connected to CP using TO to
CP (plug) cord
Eg. multiple 4 pair cables
CP
24-Port Hub
24-Port Hub
1100D3
Flexible moveable outlet positions
1100GS3-48
1100D3
1100GS3-48
• Power poles
1100D3
1100GS3-48
1100D3
1100GS3-48
• Underfloor
1100D3
1100GS3-48
1100D3
• Sub-closet
1100GS3-48
1100D3
Vertical
1100GS3-48
DS Cable
Manager
Vertical
DS Cable
1100D3
Manager
1100GS3-48
1100D3
1100GS3-48
1100D3
Eg. 4
cables
1100GS3-48
1100D3
1100GS3-48
1100D3
1
2
8
1
8
1
8
19x6-inch Universal Rack
Jonard A. Nollido
3
8
1
1
4
1
3
2
8
1
8
1
8
3
8
1
1
4
1
2
8
1
8
1
8
3
8
1
1
4
1
2
1
8
1
8
1
8
1
8
4

61. Calculating Horizontal
Components
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62. Calculating Horizontal Components
Home-Run
•
•
•
•
•
•
•
Identify shortest cable run, A
Identify longest cable run, B
Calculate average cable length, AL = (A + B) / 2
Calculate slack, S = AL x 10%
Determine closet termination allowance, C
Determine work area drop length, D
Calculate total average cable length, TCL = AL + S + C
+D
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63. Calculating Horizontal Components
Home-Run Cabling Method
30' (9m)
110 X-Connect
A
Closet Termination C
20' (6m)
Telecommunication Room
65' (20m)
Drop D
15' (4.5m)
15'
(4.5m)
B
Drop
15' (4.5m)
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10' (3m)

64. Calculating Horizontal Components
Home-Run Cabling Method
(A)
(B)
(AL)
(S)
Shortest
Cable Run
Longest
Cable Run
Average Cable
Length
10%
Slack
(C)
Closet
Termination
Allowance
18 m.
60 m.
39 m.
4 m.
6 m.*
4.5 m. **
54.5 m.
(60 ft.)
(200 ft.)
(130 ft.)
(13 ft.)
(20 ft.)
(15 ft.)
(178 ft.)
* Variable
** Only required with overhead distribution
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(D)
Work Area
Drop &
Termination
(TCL)
Total Average
Cable Length

65. Calculating Horizontal Components
Ordering Home Run Cable
Available in lengths from 1,000’ to 16,800’
Sample calculation
– Max. orderable length / total average length =
number of runs per 1000’ box
– Number of IO’s / number of runs per 1000’ box
= number of boxes of cable
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66. Horizontal Design
Exercises
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