R UNIT 2. Transmission Media DPW

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Franklin Gabriel Summers
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1 UT 2 Transmission Media

2 Topics in this Unit merican ational tandards nstitute ()/ Telecommunications ndustry ssociation (T) 568 standard nternational Organization for tandardization (O)/ nternational lecrotechnical Commission (C) international standard ational lectrical Code (C) Discuss the role of different standard organizations

3 tructured Cabling ystem

4 tructured Cabling ystem Problems with early cable systems Vendor specific Upgrades required new systems imple moves required major reconfigurations everal cable systems used for network connections Difficult and time consuming to troubleshoot

5 tandards and pecifying Organizations merican ational tandards nstitute () Mission is to encourage voluntary compliance with standards and methods Facilitates the development of these standards ncludes a wide range of standards lectronics ndustries lliance () epresents a variety of electronics manufacturers Works in conjunction with the T Telecommunications ndustry ssociation (T) Mission i is to represent issues relating to tandards, d public policy and market development Membership manufactures all telecommunications equipment Trade organization that consists of 1100 telecommunications and electronics companies T Committees

6 tandards and pecifying Organizations nsulated Cable ngineers ssociation (C) oal is to produce cable specifications for telecommunications, electrical power, and control cables mportant role in relation to standards for network cabling infrastructure ational Fire Protection ssociation (FP) Founded to protect people, property and environment from fire damage esponsible for the development and publication of the ational lectrical Code (C) ection 725 and 800 relate to data cabling

7 tandards and pecifying Organizations ational lectrical Manufactures ssociation (M) Promotes the standardization of electrical components, power wires, and cables Federal Communications Commission (FCC) Has the power to regulate electrical communications systems in the U.g. TV, radio, telephone, telegraph, cable, networks Underwriters aboratories (U) Organization dedicated to product safety testing and certification U mark is applied to cabling worldwide

8 tandards and pecifying Organizations nternational Organization for tandardization (O) nternational ti organization of national specifications epresents 130 countries around the world nternational lectrotechnical Commission (C) Publishes specifications related to electrical, electronic, and related technologies Mission is to promote standards relating to electricity and electronics nstitute t of lectrical l and lectronic ngineers () esponsible for 30 % of all technical literature published esponsible for the development of over 800 specifications, e.g. 802.x eries

9 tandards and pecifying Organizations ational nstitute of tandards and Technology (T) oals are to include assisting in the improvement and development of manufacturing technology, product reliability and scientific discovery Consists of 4 major programs - page 71 nternational Telecommunications Union (TU) Mission is to study the technical and operations issues relating to telecommunications Publishes recommendations for specifications Canadian tandards ssociation nternational (C) imilar to the U in the U

10 tandards and pecifying Organizations uropean Telecommunications tandards nstitute (T) Mission is to determine and produce telecommunications specifications and encourage worldwide standardization Building ndustry Consulting ervices nternational (C) Founded to support telephone company consultants that are responsible for the design and implementation ti of communications networks Offers a certification program called egistered Communications Distribution Designer (CDD) Occupational afety and Health dministration (OH) oal is to make all workplaces in the U safe

11 /T/-568-B Cabling tandard First published in 1991 //T evised in 1995 /T/-568- Purpose stablish cabling specifications i Provide direction and design for commercial organizations upports data and voice Provide technical and performance guidelines

12 /T/-568-B Cabling tandard evised again in 2001 /T/- 568-B to include the following amendments: Propagation delay and delay skew Corrections to previous version Define bundled, hybrid, and composite cables XT loss testing Performance specifications for four-pair cable

13 /T/-568-B Cabling tandard ubsystems of structured cabling Minimum requirements nstallations ti methods Connector/ pin assignments ife span greater than 10 yrs Media types ecommended topology and distances Definition of cabling elements

14 /T/-568-B Cabling tandard Current breakdown 568-B.1 - eneral requirements 568-B.2 Balanced twisted-pair cabling components 568-B.2-1 Cat. 6 cabling 568-B.3 Optical fiber cabling components

15 /T/-568-B Cabling upports seven standards Horizontal Cabling Backbone cabling Work area Telecommunications room quipment room ntrance facility dministration i ti

16 ubsystem of a tructured Cabling ystem Horizontal Cabling Cable from patch panel to work area Telco outlets Cable terminations Cross-connections One transition point Maximum length 100 meters 90 meters for cable 10 meters for 2 patch cables

17 Cross-Connections Connections

18 How ot To Wire

19 W How ot To Wire

20 ittle Bit Better

21 W Much Better

22 ubsystem of a tructured Cabling ystem animation

23 ubsystem of a tructured Cabling ystem Transition Point Multi-user telecommunications ti outlet t assembly (MO) Consolidation Point (CP) ecognized Media P or ctp 4pair, 100 ohm, 24 W, solid conductor twisted pair Optical fiber Two-fiber, 62.5/125-micron 50/125 micron Telecommunications Outlets One for voice, one for data Must be wired to a standard T568 T568B

24 ubsystem of a tructured Cabling ystem

25 J Cable pecs Pair 1 4& 5 Pair 2-3 & 6 Pair 3 1 & 2 Pair 4-7 & 8 J45 pecs

between floors rounding requirements voiding M/F

26 Backbone Cabling Between equipment rooms and building- entrance facilities Between buildings Vertical connections between floors rounding requirements voiding M/F Cross-connects Two levels l allowed Main cross connect Horizontal cross connect

27 Backbone Cabling 30 meters or less for equipment connections to backbone 90 meters total t for backbone distance used for high-speed applications Bridge taps or splices not allowed May use greater than 4 pair if additional requirements are meet, e.g. PXT ecognized Media Table 2.4

28 Backbone Cabling

29 W

30 Work rea Cabling ubsystem Where the horizontal cable terminates dapters may be used, external to outlet t Connects to station equipment Telecommunications rooms ocation where cabling components such as patch panels and cross connects are located Place where the horizontal cabling originates Contains hubs, switches, routers etc.

31 ntrance Facility Cabling ubsystem Point in the building where cable interfaces with the outside world May share the space with the equipment room

32 animation Cabling ubsystem

33 Cabling ubsystem quipment room Place that contains more sophisticated equipment than the Telco. room or the entrance facility Backbone cabling terminates in this room May be Telco. and equipment room in small organizations May house servers, routers, and telephone equipment

34 Media & Connecting Hardware Performance 100 ohm -P Patch cables/cross connect jumpers Optical Fiber Multimode fiber 62.5/125 or 50/125 micron ingle-mode fiber 8.7/125 micron Optical Telecommunications rooms Must be able to terminate two fibers Means for securing fiber tore one meter of fiber

35 W

36 nixter Cable Performance evels tandards set by nixter Corp to provide a standard for Vendors Five levels of standard are: evel 1 supports telephone voice grade use evel 2 supports low speed data evel 3 supports 10 Mbps thernet or 4/16 Mbps Token ing evel 4 - supports 20 MHz applications or 16 Mbps Token ing evel 5 - supports 100 MHz

37 nixter Cable Performance evels ew levels forthcoming evel 5 - supports 200 MHz evel 6 - supports 350 MHz evel 7 - supports 400 MHz lso, all components must be certified to the same level as the cable at these levels l nterprise Cabling olutions

38 W

39 Other Cabling Technologies BM Cabling ystem vaya YTMX connect ODX/CDT

40 Type 1 Type 2 Type 3 Type 5 Type 6 Type 8 Type 9 BM Cable Types

41 BM Data Connector

42 W

43 ab 2 Use wire strippers, wire cutters and crimpers Make a 568B to 568B straight through cable using CT 5 cable Make a 568 to 568B straight through h cable Then test them to see if they work.

ANSI/TIA/EIA-568-B Cabling Standard

73 ANSI/TIA/EIA-568-B Cabling Standard In the mid-1980s, consumers, contractors, vendors, and manufacturers became concerned about the lack of specifications relating to telecommunications cabling. Before