OBJECTIVES

2. OBJECTIVES 1. Define horizontal cabling. 2. Describe backbone cabling. 3. List different types of backbone cable systems and describe their attributes. 4. Describe a crossconnect panel. 5. Describe procedures associated with proper cable management.

3. Figure 5-1: Structured Cabling System

4. Figure 5-2: Horizontal Cabling System Components

5. Table 5-1: Wire Colors for TC Crossconnect

6. Figure 5-3: Horizontal Crossconnect

7. Figure 5-4: Horizontal Cable Run Distances

8. The types of cables that are recognized by TIA for horizontal cabling are as follows: 4-pair, 100-ohm unshielded twisted-pair (UTP) cables. 2-pair, 150-ohm shielded twisted-pair (STP) cables. 2-fiber, 62.5/125-micron optical fiber cable.

9. Figure 5-5: Telecommunications Outlet Cabling Choices

10. Figure 5-6: UTP Pair Assignments for 8-Position Modular Jacks

11. LAB 13 OBJECTIVE Installing a Punch-down Modular Outlet To understand how to install an RJ45 punch-down modular outlet on a section of 100-ohm UTP cable

12. TIP The end of the cable needs to be prepared first. Once you have done that, simply disregard the instructions that pertain to connector or cable types that are not included in your parts inventory. Keep in mind that the unshielded twisted pair cable does not require the grounding clip to be installed. Use the stuffer cap for one side of wires, and the punch-down tools for the other side. Once the wires have been punched down, go ahead and install the second stuffer cap so that both halves of the jack look identical.

13. Figure 5-7: Testing Modular Jack and Cable Continuity

14. TIP Recall that the RJ45 cable from Lab procedure 6 was already checked. Any problems noted on this test should point to the newly created cable.

15. Figure 5-8: Fitting the Outlet into the Wall Plate

16. TIP Don’t worry about installing the modular jack upside-down, because the design of the wall plate will prevent this.

17. LAB 13 QUESTIONS What does the instruction sheet 408-3354 indicate about keeping the wires twisted to within specific distances from the termination? 1

18. LAB 13 QUESTIONS When using the steel-tip punch-down tool, what impact setting is recommended? 2

19. LAB 13 QUESTIONS Are the wires cut on the inside or the outside of the wiring block? 3

20. LAB 13 QUESTIONS How are dimensions indicated on the instruction sheet? 4

21. LAB 14 OBJECTIVE Assembling Edge-Connector Modular Outlets To understand how to assemble an RJ45 edge-connector modular outlet on a section of 100-ohm UTP cable

22. TIP Although you will be using 100-ohm UTP cable, this type of RJ45 modular outlet can accommodate STP cable of both the 100-ohm, 8-wire and 150-ohm (Token Ring), 4-wire systems. When installing the connector within the matching housing, your parts may either snap or screw together.

23. Figure 5-9: Aligning the Connector and Housing

24. Figure 5-10: Removing 2 Inches of UTP Cable Jacket

25. TIP A 110Connect arrangement comes with the edge connector already installed in the port housing and remains this way during the wiring. The AMP-BARREL arrangement requires that the edge connector be terminated prior to its being mounted into the housing. Both types of installations are covered in the instruction sheet.

26. TIP Don’t forget to install the two stuffer caps on the edge connector, regardless of how the wires were punched down. They help to protect the connections against exposure.

27. Figure 5-11: Pushing the Jack Insert

28. TIP As a rule, any housing that will not currently carry an active service would be outfitted with a blank insert, until a future need for expansion occurs. You will not be installing a face plate as part of this lab procedure.

29. Figure 5-12: Testing Modular Jack and Cable Continuity

30. LAB 14 QUESTIONS After reading the instruction sheet 408-3232, which edge connector (110Connect or AMP-BARREL) appears to be the easiest to install? 1

31. LAB 14 QUESTIONS Which type of edge connector (110Connect or AMP-BARREL) requires termination prior to being installed in the housing? 2

32. LAB 14 QUESTIONS Why is it a good idea to lace the middle wires into the edge connector first? 3

33. LAB 14 QUESTIONS Which type of edge connector comes already installed in the port housing? 4

34. Figure 5-13: Work Area Components

35. The important specifications related to work area cabling include: Equipment cords should have the same performance capabilities as patch cords of the same type and category. When adapters are used, they should be compatible with the transmission capabilities of the equipment to which they connect. Maximum horizontal cable lengths are specified using a maximum cable length of 3 meters (9.8 feet) for work area equipment cords.

36. The important points to remember about horizontal cabling subsystems include: Any application-specific components (such as splitters or baluns) cannot be installed as part of the horizontal cabling system. If used, they are located external to the telecommunications outlet or horizontal crossconnect. The proximity of horizontal cabling to sources of EMI must be taken into account.

37. The important points to remember about horizontal cabling subsystems include: (continued) Horizontal cable types that have been recognized by TIA/EIA T568A include: 4-pair, 100-ohm UTP 2-pair, 150-ohm STP-A 2-fiber (duplex), 62.5/125 µm, or a multimode optical fiber such as 50/125 µm, which is permitted under TIA/EIA T568B

38. The important points to remember about horizontal cabling subsystems include: (continued) ISO/IEC 11801 permits 120-ohm UTP, and 50/125 µm multimode optical fiber. Multipair and multiunit cables are permitted, as long as they meet the hybrid/bundled cable requirements of TIA/EIA T568A-3. Grounding must conform to all applicable local/federal building codes, as well as TIA/EIA 607.

39. The important points to remember about horizontal cabling subsystems include: (continued) A minimum of two telecommunications outlets are required for each individual work area, such that: The first outlet is wired to 100-ohm, twisted-pair. The second outlet is wired to 100-ohm, twisted-pair, or to 150-ohm STP-A, or to 62.5/125 µm multimode fiber.

40. The important points to remember about horizontal cabling subsystems include: (continued) One transition point (TP) is allowed between different forms of the same cable type, such as in situations where under-carpet cable connects to round cable. This term is broader by definition in ISO/IEC 11801 than in TIA/EIA T568A. In addition to the transitions for under-carpet cabling, it also includes consolidation point (CP) connections.

41. The important points to remember about horizontal cabling subsystems include: (continued) Although 50-ohm coax is recognized by TIA/EIA T568A, it is not recommended for new cabling installations. Although additional outlets may be provided, they are considered to be in addition to, rather than replacements for, the minimum requirements of the standard. For copper-based horizontal cabling, bridged taps and splices are not permitted. Splices are allowed for fiber, however.

42. Figure 5-14: Backbone Cabling System Components

43. Figure 5-15: Telco Connector

44. Figure 5-16: Patch Panel with RJ45 Connectors

45. Figure 5-17: Cable Tidy Between RJ45 Panels

46. Figure 5-18: Patch Panel with ST Fiber Optic Connectors

47. Figure 5-19: Backbone Cable Types

48. The types of cables that are recognized by TIA for vertical backbone cabling are as follows: 4-pair, 100-ohm unshielded twisted-pair (UTP) cables. 2-pair, 150-ohm shielded twisted-pair (STP-A) cables. 2-fiber, 62.5/125-micron multi-mode optical fiber cable. 1-fiber, 9/125-micron single-mode optical fiber cable.

49. Figure 5-20: Backbone Configurations

50. The important points to remember about vertical backbone cabling systems include: Equipment connections to backbone cabling should be made with cable lengths of 30 m (98 feet) or less. The backbone cabling shall be configured in a star topology. Each horizontal crossconnect is wired directly to a main crossconnect or to an intermediate crossconnect, then to a main crossconnect.