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2010fall ch33 shurentsetseg

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2010fall ch33 shurentsetseg

  1. 1. Wide Area Networks<br />Ц.Дуламжав /J.TCO8DO14/<br />Б.Шүрэнцэцэг /J.TC08D726/<br />
  2. 2. CONTENT<br />-Wide area networks-Data network facilities-IBM systems network architecture (SNA)- (VSAT) systems - T1/E1 and fractional T3/E3 -Conclusion<br />
  3. 3. WIDE AREA NETWORKS<br />
  4. 4. WIDE AREA NETWORK REQUIREMENTS<br />Regardless of the application and irrespective of the WAN’s purpose, the enterprise expects certain deliverables of the service provider:<br />
  5. 5. DATA NETWORK FACILITIES<br /> - Bandwidth requirements - Digital or analog - Circuit sharing<br />
  6. 6. POINT-TO-POINT NETWORK FACILITIES<br />
  7. 7. POINT-TO-POINT ANALOG FACILITIES<br />In the past analog facilities and modems were the default private circuit, but theyare disappearing in favor of digital circuits.<br />
  8. 8. IBM SYSTEMS NETWORK ARCHITECTURE (SNA)<br />The architecture was first published in 1974 when processing was controlledby an expensive mainframe computer such as an IBM 360 that communicatedwith remote 3270 terminals over a network composed of voice-grade circuits.<br />
  9. 9. SNA PHYSICAL <br />COMPONENTS<br />
  10. 10. SNA’s LAYERED ARCHITECTURE<br />Level 1- PhysicalLevel 2- Data link controlLevel 3- Path controlLevel 4- TransmissioncontrolLevel 5- Data flow controlLevel 6- Presentation servicesLevel 7- Transaction services<br />
  11. 11. VERY SMALL APERTURE TERMINAL (VSAT)<br />
  12. 12. T1/E1 AND FRACTIONAL T3/E3<br />
  13. 13. WAN APPLICATION ISSUES<br />-Inquiry/response-Conversational-Bulk data transfer<br />
  14. 14. CONCLUSION <br />We have learned about WAN network through the this topic. Wan network is used around the world and is the network that connect between the most countries. <br />
  15. 15. USED MATERIALS<br />-The Irwin Handbook of Telecommunications-Google.com<br />
  16. 16. Thank you for <br />your attention<br />12/30/2010<br />copyright 2006 www.brainybetty.com<br />16<br />

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