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EQUIPO 2 Cabling system components. The cable Horizontal Cables Horizontal cables run between a cross-connect panel in a wiring closet and a wall jack,

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Presentation on theme: "EQUIPO 2 Cabling system components. The cable Horizontal Cables Horizontal cables run between a cross-connect panel in a wiring closet and a wall jack,"— Presentation transcript:

1 EQUIPO 2 Cabling system components

2 The cable

3 Horizontal Cables Horizontal cables run between a cross-connect panel in a wiring closet and a wall jack, are most often implemented with 100-ohm, four-pair, unshielded twisted-pair (UTP), solid-conductor cables, as specified in the ANSI/TIA/EIA-568 Standard for commercial buildings. The Standard also provides for horizontal cabling to be implemented: 62.5/125-micron or 50/125-micron multimode optical fiber 150-ohm shielded twisted-pair (STP) cable.(but does not recommend)

4 Backbone Can be implemented using 100-ohm UTP, 62.5/125-micron or 50/125- micron multimode optical fiber, or 8.3/125-micron single-mode optical cable. Neither 150-ohm STP nor coaxial cable is allowed. Optical fiber is the preferred installation medium because of distance limitations associated with copper wiring. a fiber backbone is that glass does not conduct electricity and is thus not subject to electromagnetic interference (EMI)

5 Modular Patch Cables Modular patch cables (patch cords) are used to provide the connection between field-terminated horizontal cables and network-connectivity devices and connections between the wall- plate jack and network devices. Patch cords are made with stranded conductors because they are more flexible. Problems with the patch cables: The first challenge lies within the modular plugs themselves. the untwisting and splitting of the pairs the mechanical crimping process that secures the plug to the cable

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7 Pick the rigth cable You must know the installation environment and what the applicable NEC and local fire-code requirements will allow regarding the cables flame ratings. Your second decision on cabling must be on media type.. For fiber cable, you will need to specify single-mode or multimode, and if it is multimode, you will need to specify core diameter, i.e., 62.5/125 or 50/125. For UTP cables, you need to specify the appropriate transmission-performance category.

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9 ANSI/TIA/EIA-569-A Commercial Building Telecommunications Pathways and Spaces Standard for concealing, protecting, and routing your cable plant. Must be electrically grounded per the ANSI/TIA/EIA-607 CommercialBuilding Grounding and Bonding Requirements for Telecommunications.

10 CONDUIT Conduit is pipe. It can be metallic or nonmetallic, rigid or flexible and it runs from a work area to a wiring closet. Only 40 percent full by your current cable needs. Conduit should only be filled to a maximum of 60 percent, so this margin leaves you with room for future growth.

11 Cable Trays Cable trays are typically wire racks specially designed to support the weight of a cable infrastructure. Cables simply lie within the tray, so they are very accessible when it comes to maintenance and troubleshooting.

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13 Raceways Raceways are special types of conduits used for surface mounting horizontal cables are mounted on the outside of a wall in places where cable is not easily installed inside the wall.

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15 Fiber-Protection Systems As with raceways, fiber-protection systems are special types of conduits and cable- management systems designed specifically to address the special protection needs of optical-fiber cable. Although maintaining is important for all cable media, cable will eventual signal loss, which translates to lost data, troubleshooting, downed network connections, and lost productivity.

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17 Conectores y terminales fijas

18 Wiring Closets

19 TIA / EIA ANSI/TIA/EIA-568-B ANSI/TIA/EIA-569-A

20 Additional requirements There shall be a minimum of two dedicated 120V 20A nominal, nonswitched, AC duplex electrical-outlet receptacles, each on separate branch circuits. There shall be a minimum of one room per floor to house telecommunications equipment/ cable terminations and associated cross-connect cable and wire. Lighting shall be a minimum of 500 lx (50 footcandles) and mounted 2.6 m (8.5 feet) above the floor There shall be a minimum door size of 910 mm (36 inches) wide and 2,000 mm (80 inches) high without sill, hinged to open outward or slide side-to-side or be removable,

21 Wall-Mounted Brackets For small installations and areas where economy of space is a key consideration, wall-mounted brackets may provide the best solution. Wall-mounted racks such as MilesTeks Swing Gate wall rack in Figure 5.9 have a frame that swings out 90 degrees to provide access to the rear panels and include wire guides to help with cable management.

22 Wall-Mounted Brackets Skeletal Frames wall-mount rack with cable management

23 Wall-Mounted Brackets Full Equipment Cabinets Shelves available for 19-inch racks

24 Electrical Grounding Cross-Connect Devices The 66 Punch-Down Blocks

25 Modular Patch Panels

26 Fiber-Optic Connector Panels A consolidation point A fiber-optic connector panel

27 Administration Standards NOTE. Network administrators should be judged by the neatness of their wiring closets.


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