lbc presentation may 7, 2011(comp04)

Jonard A. Nollido

Structured Cabling System (SCS)

Seminar

Jonard A. Nollido

Jonard A. Nollido

Technical TrainerStructured Cabling

Network Testing

Jonard A. Nollido

Agenda:

1. Overview of Structured Cabling System

2. Horizontal Subsystem Design

a. Components and types

b. Sample Design

3. Cabling Installation and Practical Applications

a. SCS Subsystem

b. Transmission Line Diagram

Jonard A. Nollido

IMAGINE LIFE

WITHOUT

STRUCTURED

CABLING

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Jonard A. Nollido

of

Network Problem

Source: BICSI Magazine, issue 1999

CABLING

RELATED !

Gasoline

plssss!!!

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Software

PC

LAN

CablingCost

Life

Years

Complete IT System

Jonard A. Nollido

Although cabling represents only 5% of the total network

investment,

A Structured cabling systems will outlive most network

components.

LAN Equipment

7%Cabling 5%

Intelligent Workstation

34%

Software 54%

Network Investment

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- 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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Telecomms

Office Automation

BuildingAutomation

Structured Cabling System

Intelligent Building SystemsBAS

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NOInstallation

Testing

Planning

Design

Pass

Documentation

YES

SCS Block Diagram

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Subsystem Architecture

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WORK AREA SUBSYSTEM

Work Area

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HORIZONTAL SUBSYSTEM

Horizontal

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RISER BACKBONE SUBSYSTEM

Riser Backbone

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ADMINISTRATION SUBSYSTEM

Administration

Administration

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EQUIPMENT SUBSYSTEM

Equipment

Subsystem

MDF

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CAMPUS SUBSYSTEM

Campus Backbone

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Transmission Line

Diagram

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1 Gigabit Switch Jack Panel(Category 6 rated)

Patch Cord(Category 6 rated)


Telecom Outlet(Category 6 rated)

Server

Category 6 UTP (1 Gigabit LAN Card)

10 Mbps performance

Category 6 maximum performance = 1,000 Mbps

Category 3 maximum performance = 10 Mbps

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CAT 5e CAT 6CAT 6A

(10G cable)

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D1 D2

D1 D2= = Diameter

Conditions:

@ frequency 1 = 10,000 bits per second

@ frequency 2 = 1,000,000 bits per second

frequency 1 >>>> frequency 2

-e (electron)

Solutions:

1) Coat the conductor with

Ag (silver)

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Can and marble analogy

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D1 D2

D1 D2= = Diameter

Conditions:

@ frequency 1 = 10,000 bits per second

@ frequency 2 = 1,000,000 bits per second

frequency 1 >>>> frequency 2

-e (electron)

Solutions:

1) Coat the conductor with

Ag (silver)

2) Increase conductor size

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1 Gigabit Switch


Jack Panel(Category 6 rated)

Category 6 UTP Telecom Outlet(Category 6 rated)


Server

(1 Gigabit LAN Card)

1,000 Mbps performance

Category 6 maximum performance = 1,000 Mbps

Jonard A. Nollido

Agenda:

1. Overview of Structured Cabling System

2. Horizontal Subsystem Design

a. Components and types

b. Sample Design

3. Cabling Installation and Practical Applications

a. SCS Subsystem

b. Transmission Line Diagram

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Horizontal Subsystem Design

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• 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

Objectives

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• 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

Factors to consider

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• 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

Terminal

EquipmentHorizontal Cabling

Subsystem

(90 meter)

Work

Area

Cabling

FD/HC CP TO

Horizontal Cabling System

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CP

TP

Minimum: Cat 5e

Optional: OM1/2/3

Minimum: Cat 3

Telecommunication Room

90 meters 5 meters5 meters

Data

Voice

Horizontal Cabling Topology

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• 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)

Horizontal Media Considerations

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Patch Panel with

Modular JacksPatch Cord with

Modular Plug

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.

110XC Cross-connect

Patch Cord with

110XC Plug

Modular Jacks

Modular Plug

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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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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:

– Under-floor System

– Access Floor System

– Conduit Systems (Trunking, Conduit, Pipe, etc.)

– Cable Tray and Channels

– Ceiling Pathways

– Perimeter Pathways

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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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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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Cellular Floor

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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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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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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.

• Cables are pulled or laid in

place after the pathway has

been installed.

Ladder Cable Tray

Channel Cable Tray Mesh Cable Tray

Ventilated Cable Tray

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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, J-

Hooks, 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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• Determine the number of WAs

• Determine design type, home run or zone

• Determine the Horizontal channel design, Cross-

connect, CP, MUTOA,

• Determine cable lengths and components required

Horizontal System Design

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TO’s

Telecomms RoomStairs

Office

Floor Plan showing Telecommunications Outlets

• 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

Determine the Number of Work Areas

Standards recommendations

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Home Run method

81 81

81

2

3 4

1

81

81 81

81

2

3 4

1

81

81 81

81

2

3 4

1

81

81 81

81

2

3 4

1

81

19x6-inch Universal Rack

Vertical

DS Cable

Manager

Vertical

DS Cable

Manager

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

1100GS3-48

1100D3

1100GS3-48

1100D3

1100GS3-48

1100D3

1100GS3-48

1100D3

1100GS3-48

1100D3

4 x UTP 4 x UTP 4 x UTP4 x UTP

16 x UTP

Determine Distribution Design Type

• TO’s connected directly to patch panel in TR

• Example 16 x UTP to TO’s

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Zone method – Consolidation Points

81 81

81

2

3 4

1

81

81 81

81

2

3 4

1

81

81 81

81

2

3 4

1

81

81 81

81

2

3 4

1

81

19x6-inch Universal Rack

Vertical

DS Cable

Manager

Vertical

DS Cable

Manager

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

1100GS3-48

1100D3

1100GS3-48

1100D3

1100GS3-48

1100D3

1100GS3-48

1100D3

1100GS3-48

1100D3

Eg. 4

cables

Eg. multiple 4 pair cables

Flexible moveable outlet positions

• Power poles

• Underfloor

• Sub-closet

CP

Determine Distribution Design Type

• Consolidation Point connected to patch panel at TR

• TO’s connected to CP using TO to CP (plug) cord

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Calculating Horizontal

Components

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Calculating Horizontal Components

• 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

Home-Run

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110 X-Connect 30' (9m)

Telecommunication Room

65' (20m)

10' (3m)

A

B

15'

(4.5m)

Closet Termination

20' (6m) Drop

15' (4.5m)

Drop

15' (4.5m)

CD

Home-Run Cabling Method


Jonard A. Nollido

Home-Run Cabling Method

* Variable

** Only required with overhead distribution

(A)

Shortest

Cable Run

(B)

Longest

Cable Run

(AL)

Average Cable

Length

(S)

10%

Slack

( C )

Closet

Termination

Allowance

(D)

Work Area

Drop &

Termination

(TCL)

Total Average

Cable Length

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.)


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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

Ordering Home Run Cable

Jonard A. Nollido

Horizontal Design

Exercises

lbc presentation may 7, 2011(comp04)

Technology

nollido magazine

horizontal subsystem

bicsi jonard

horizontal design

cabling installation

set of cabling

horizontal pathways

term horizontal