Cabling Unit 2-Transmission Media.ppt - Donna …...N S T R Structured Cabling System E T W U C Structured Cabling System • Problems with early cable systems O R K T U R Problems

NSSTTRR UNIT 2ETW

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UNIT 2

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DPWDPW© Donna Warren © Donna Warren

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NSSTTRR Topics in this UnitETW

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Topics in this Unit• American National Standards Institute W

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(ANSI)/ Telecommunications Industry Association (TIA) 568 standard

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( )• International Organization for

Standardization (ISO)/ InternationalABLCCAA

Standardization (ISO)/ International Elecrotechnical Commission (IEC) 11801 international standardL

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11801 international standard• National Electrical Code (NEC)

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• Discuss the role of different standard organizations

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Structured Cabling System

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NSSTTRR Structured Cabling SystemETW

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Structured Cabling System

• Problems with early cable systemsWORK

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Problems with early cable systems– Vendor specific

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– Upgrades required new systems– Simple moves required major

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reconfigurations– Several cable systems used for network L

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connections– Difficult and time consuming to

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gtroubleshoot

NSSTTRR Standards and Specifying OrganizationsETW

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Standards and Specifying Organizations• American National Standards Institute (ANSI)

– Mission is to encourage voluntary compliance with standards WORK

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g y pand methods

– Facilitates the development of these standardsIncludes a wide range of standardsK

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– Includes a wide range of standards

• Electronics Industries Alliance (EIA)– Represents a variety of electronics manufacturers

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– Works in conjunction with the TIA

• Telecommunications Industry Association (TIA)Mi i i t t i l ti t St d d bliL

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– Mission is to represent issues relating to Standards, public policy and market development

– Membership manufactures all telecommunications equipmentG

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– Trade organization that consists of 1100 telecommunications and electronics companies

– TIA Committees


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Standards and Specifying Organizations

• Insulated Cable Engineers Association (ICEA)W

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(ICEA)– Goal is to produce cable specifications for

telecommunications electrical power and controlK

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telecommunications, electrical power, and control cables

– Important role in relation to standards for network ABLCCAA

cabling infrastructure• National Fire Protection Association (NFPA)

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– Founded to protect people, property and environment from fire damage

– Responsible for the development and publicationG

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Responsible for the development and publication of the National Electrical Code (NEC)

• Section 725 and 800 relate to data cabling


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• National Electrical Manufactures Association (NEMA)


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(NEMA)– Promotes the standardization of electrical

components, power wires, and cablesK

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p , p ,• Federal Communications Commission (FCC)

– Has the power to regulate electrical ABLCCAA

p gcommunications systems in the US

– E.g. TV, radio, telephone, telegraph, cable, networksL

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networks• Underwriters Laboratories (UL)

Organization dedicated to product safety testingG

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– Organization dedicated to product safety testing and certification

– UL mark is applied to cabling worldwide


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– International organization of national specifications– Represents 130 countries around the world

• International Electrotechnical Commission (IEC)K

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• International Electrotechnical Commission (IEC)– Publishes specifications related to electrical,

electronic, and related technologiesABLCCAA

– Mission is to promote standards relating to electricity and electronics

I tit t f El t i l d El t i E i (IEEE)LING

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• Institute of Electrical and Electronic Engineers (IEEE)– Responsible for 30 % of all technical literature

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published– Responsible for the development of over 800

specifications, e.g. 802.x Series


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• National Institute of Standards and Technology (NIST)


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(NIST)– Goals are to include assisting in the improvement

and development of manufacturing technology, K

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product reliability and scientific discovery– Consists of 4 major programs - page 71

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• International Telecommunications Union (ITU)– Mission is to study the technical and operations

issues relating to telecommunicationsLING

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issues relating to telecommunications – Publishes recommendations for specifications

• Canadian Standards Association InternationalG

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Canadian Standards Association International (CSA)– Similar to the UL in the US


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(ETSI)


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(ETSI)– Mission is to determine and produce

telecommunications specifications and encourage K

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p gworldwide standardization

• Building Industry Consulting Services International (BICSI)A

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(BICSI)– Founded to support telephone company consultants

that are responsible for the design and i l t ti f i ti t kL

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implementation of communications networks– Offers a certification program called Registered

Communications Distribution Designer (RCDD)G

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g ( )• Occupational Safety and Health Administration (OSHA)

– Goal is to make all workplaces in the US safe

NSSTTRR ANSI/TIA/EIA-568-B Cabling StandardETW

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ANSI/TIA/EIA 568 B Cabling Standard

• First published in 1991 – ANSI/EIA/TIA-WORK

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568 -1991• Revised in 1995 – ANSI/TIA/EIA-568-AK

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Revised in 1995 ANSI/TIA/EIA 568 A• Purpose

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– Establish cabling specifications– Provide direction and design for L

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commercial organizations– Supports data and voice

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– Provide technical and performance guidelines


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• Revised again in 2001 – ANSI/TIA/EIA-WORK

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g568-B to include the following amendments:

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– Propagation delay and delay skewCorrections to previous versionA

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– Corrections to previous version– Define bundled, hybrid, and composite

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cables– NEXT loss testing

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– Performance specifications for four-pair cable


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• Subsystems of structured cablingWORK

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y g• Minimum requirements

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• Installations methods• Connector/ pin assignments

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• Life span – greater than 10 yrsMedia typesL

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• Media types• Recommended topology and distances

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• Definition of cabling elements


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• Current breakdownWORK

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Current breakdown• 568-B.1 - General requirements

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• 568-B.2 – Balanced twisted-pair cabling components

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• 568-B.2-1 – Cat. 6 cabling568 B 3 Optical fiber cablingL

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• 568-B.3 – Optical fiber cabling components

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ANSI/TIA/EIA 568 B Cabling

• Supports seven standardsWORK

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Supports seven standards– Horizontal Cabling

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– Backbone cabling– Work area

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– Telecommunications room– Equipment roomL

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Equipment room– Entrance facility

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– Administration

NSSTTRR Subsystem of a Structured Cabling SystemETW

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Subsystem of a Structured Cabling System

• Horizontal CablingWORK

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– Cable from patch panel to work area– Telco outletsK

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Telco outlets– Cable terminations

C tiABLCCAA

– Cross-connections– One transition pointL

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– Maximum length – 100 meters• 90 meters for cableG

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• 10 meters for 2 patch cables

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Cross Connections

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How Not To Wire

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How Not To WireETW

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NSSTTRR A Little Bit BetterETW

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A Little Bit BetterWORK

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Much BetterETW

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Subsystem of a Structured Cabling SystemETW

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NSSTTRR Subsystem of a Structured Cabling SystemETW

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Subsystem of a Structured Cabling System

• Transition PointM lti t l i ti tl t bl (MUTOA)W

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– Multi-user telecommunications outlet assembly (MUTOA)– Consolidation Point (CP)

• Recognized MediaK

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– UTP or ScTP• 4pair, 100 ohm, 24 AWG, solid conductor twisted pair

Optical fiberABLCCAA

– Optical fiber• Two-fiber, 62.5/125-micron• 50/125 micronL

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• Telecommunications Outlets– One for voice , one for data– Must be wired to a standardG

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Must be wired to a standard• T568A• T568B

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NSSTTRR RJ45 568 Cable SpecsETW

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RJ45 568 Cable Specs

• Pair 1 – 4 & 5WORK

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• Pair 2 - 3 & 6• Pair 3 – 1 & 2K

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• Pair 4 - 7 & 8

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RJ45 A Specs

NSSTTRR Backbone CablingETW

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Backbone Cabling• Between equipment rooms and building-W

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q p gentrance facilities

• Between buildingsK

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• Vertical connections between floors• Grounding requirements

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• Avoiding EMI/RFI• Cross-connects

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– Two levels allowed– Main cross connect– Horizontal cross connectG

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Horizontal cross connect


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Backbone Cabling

• 30 meters or less for equipmentWORK

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30 meters or less for equipment connections to backbone90 t t t l f b kb di tK

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• 90 meters total for backbone distance used for high-speed applications

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• Bridge taps or splices not allowed• May use greater than 4 pair if additionalL

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May use greater than 4 pair if additional requirements are meet, e.g. PSEXT

• Recognized Media Table 2 4G

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• Recognized Media – Table 2.4


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Backbone CablingWORK

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NSSTTRR Cabling SubsystemETW

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Cabling Subsystem • Work AreaW

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Work Area– Where the horizontal cable terminates

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– Adapters may be used, external to outlet– Connects to station equipment

ABLCCAA

• Telecommunications rooms– Location where cabling components such asL

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Location where cabling components such as patch panels and cross connects are located

– Place where the horizontal cabling originatesG

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Place where the horizontal cabling originates– Contains hubs, switches, routers…etc.


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Cabling Subsystem• Entrance

FacilityWORK

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Facility– Point in the

building whereK

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building where cable interfaces with

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interfaces with the outside worldL

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– May share the space with the

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equipment room


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Cabling Subsystem

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animation


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Cabling Subsystem

• Equipment roomWORK

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• Equipment room– Place that contains more sophisticated

equipment than the Telco room or theK

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equipment than the Telco. room or the entrance facilityBackbone cabling terminates in this roomA

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– Backbone cabling terminates in this room– May be Telco. and equipment room in small

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organizations– May house servers, routers, and telephone

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equipment

NSSTTRR Media & Connecting Hardware PerformanceETW

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Media & Connecting Hardware Performance

• 100 ohm -UTPWORK

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• Patch cables/Cross connect jumpers• Optical FiberK

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p– Multimode fiber

• 62.5/125 or 50/125 micronABLCCAA

– Single-mode fiber• 8.7/125 micron

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– Optical Telecommunications rooms• Must be able to terminate two fibers• Means for securing fiberG

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• Means for securing fiber• Store one meter of fiber

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NSSTTRR Anixter Cable Performance LevelsETW

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Anixter Cable Performance Levels

• Standards set by Anixter Corp to provide aWORK

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Standards set by Anixter Corp to provide a standard for Vendors

• Five levels of standard are:K

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• Five levels of standard are:– Level 1 – supports telephone voice grade use

Level 2 supports low speed dataABLCCAA

– Level 2 – supports low speed data – Level 3 – supports 10 Mbps Ethernet or 4/16

Mbps Token RingLING

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Mbps Token Ring– Level 4 - supports 20 MHz applications or 16

Mbps Token RingG

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Mbps Token Ring– Level 5 - supports 100 MHz

NSSTTRR Anixter Cable Performance LevelsETW

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Anixter Cable Performance Levels

• New levels forthcomingWORK

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New levels forthcoming– Level 5 - supports 200 MHz

Level 6 supports 350 MHzK

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– Level 6 - supports 350 MHz – Level 7 - supports 400 MHz

Al ll t t b tifi dABLCCAA

• Also, all components must be certified to the same level as the cable at these l lL

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levels • Enterprise Cabling Solutions

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NSSTTRR Other Cabling TechnologiesETW

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Other Cabling Technologies

• IBM Cabling SystemWORK

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IBM Cabling System• Avaya SYSTIMAX

DEC tK

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• DECconnect• NORDX/CDT

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NSSTTRR IBM Cable TypesETW

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IBM Cable Types

• Type 1AWORK

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Type 1A• Type 2A

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• Type 3• Type 5

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• Type 6• Type 8L

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Type 8• Type 9

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NSSTTRR IBM Data ConnectorETW

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IBM Data Connector

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NSSTTRR Lab 2ETW

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Lab 2

• Use wire strippers wire cutters andWORK

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Use wire strippers, wire cutters and crimpers

• Make a 568B to 568B straight throughK

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• Make a 568B to 568B straight through cable using CAT 5 cableM k 568A t 568B t i ht th hA

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• Make a 568A to 568B straight through cable

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• Then test them to see if they work.

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Documents

Cabling Unit 2-Transmission Media.ppt - Donna …...N S T R Structured Cabling System E T W U C Structured Cabling System • Problems with early cable systems O R K T U R Problems