2010fall ch7 zolboo

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2010fall ch7 zolboo

  1. 1. Outsite plant<br />J.TC08D001 E. Uuriintsolmon<br />J.TC08D003 Ts. Buyanbat<br />J.TC08D706 G. Zolboo<br />
  2. 2. 1. Outside Plant Technology <br />2.Protection<br />3.Outside Plant Application Issues <br />
  3. 3. 1. Outside Plant Technology <br /><ul><li>Supporting Structures
  4. 4. Cable Characteristics
  5. 5. Underground cable
  6. 6. Feeder and distribution cable</li></li></ul><li>What is outside plant technology ?<br />
  7. 7. Supporting structure<br />Cable is classified according to its supporting structure:<br />Aerial cable supported on pole lines<br />Underground cable enclosed in buried conduit<br />Buried cable placed directly in the ground<br />
  8. 8. Cable characteristics<br />Twisted pair cables<br />Cable sheath materials<br />Cable pairs<br />
  9. 9. Old <br />new<br />
  10. 10. Underground cable<br />
  11. 11. Feeder and distribution cable<br />
  12. 12.
  13. 13. 2.Protection<br /><ul><li>Electrical Protection
  14. 14. Protection Methods
  15. 15. Digital Loop Carrier (DLC) </li></li></ul><li>Electrical protection<br />Prevent injury <br />Prevent damage<br />
  16. 16. Zone of protection<br />
  17. 17. Protection methods <br />Methods:<br /> Insulating telecommunications apparatus<br /> Shielding communications cables<br /> Grounding equipment<br /> Opening affected circuits<br /> Separating electrical and telecommunications circuit<br />
  18. 18. Insulating Telecommunications Apparatus<br />Insulation.<br />Satisfy electrical protection requirements<br />Conductor of from 1000 to 4000 V<br />
  19. 19. Shielding Communications Cables<br />Lightning strikes <br />A grounded shield wire<br />buried above a communications cable<br />Separation to prevent arcing between the shield and the cable.<br />
  20. 20. Grounding Equipment<br />Principle of electrical protection <br />Simplest form protector<br />One side of the carbon block<br />
  21. 21. Opening Affected Circuits<br />Method of protecting circuits and equipment <br />The communications conductors<br />
  22. 22. Separating Electrical and Telecommunications Circuits<br />The minimum acceptable separation between power and telecommunications circuits . <br /> Additional measure <br /> Sharing of a joint trench<br />
  23. 23. 3.Outside Plant Application Issues <br />
  24. 24. Outside plant application issues<br />Including plans for both fiber and copper cable. <br />Depends on the number of stations. <br />Flexible conduit can be plowed underground. <br />
  25. 25. Conclusion <br /> Last of all <br />Outside plant is the collection of cables, poles, conduit, and fiber optics that<br /> interconnect central offices and connect the central office to the subscribers’ premises.<br /> Wide-bandwidth signals travel across the country in ribbons of fiber-optic cable, but must be converted to analog and piped to the customer over a pair of wires that may cut off any frequency higher than 4kHz. <br />When we prepared this presentation we learned about how outside plant is designed and constructed.<br />
  26. 26. Reference<br />The Irwin Handbook of Telecommunications<br />Lecture of optic lesson <br />www.google.com<br />
  27. 27. Thank you for your attention!<br />

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