1. © 2007 Cisco Systems, Inc. All rights reserved. 1 Valašské Meziříčí 9.6.2014 Networking Media

2. Valašské Meziříčí 9.6.20142 Objectives Types of cables and connectors Constructing and terminating twisted pair cables Determining type of cable needed

3. Valašské Meziříčí 9.6.20143 Cables and Connectors

4. Valašské Meziříčí 9.6.20144 Cables and Connectors Types of cables Today Yesterday Tomorrow

5. Valašské Meziříčí 9.6.20145 Twisted pair cables Cables and Connectors 4 pairs of copper wires twisted together UTP = Unshielded Twisted Pair There is no shielding

6. Valašské Meziříčí 9.6.20146 Twisted pair cables Cables and Connectors

7. Valašské Meziříčí 9.6.20147 Coaxial cable Cables and Connectors Center conductor Shielding Used in TV and radio applications Not used in computer networks any more

8. Valašské Meziříčí 9.6.20148 Optical fiber cables Cables and Connectors

9. Valašské Meziříčí 9.6.20149 Optical fiber cables Cables and Connectors

10. Valašské Meziříčí 9.6.201410 Optical fiber cables Cables and Connectors Components of the puls start at the same time. Here they arrive at the same time => good result. Here they arrive at different times => bad result.

11. Valašské Meziříčí 9.6.201411 Optical fiber cables Cables and Connectors

12. Valašské Meziříčí 9.6.201412 Optical fiber cables Cables and Connectors

13. Valašské Meziříčí 9.6.201413 Construct and Terminate Twisted Pair Cables Cross-over and straight through cables Transmit pins on one device must be connected to receive pins on the other device. Transmit pins Receive pins Device 1 Transmit pins Receive pins Device 2 There must be a crossing in the path.

14. Valašské Meziříčí 9.6.201414 Construct and Terminate Twisted Pair Cables Cross-over and straight through cables Transmit pins Receive pins PC Transmit pins Receive pins Switch No need of a crossing in the path. A crossing is inside each switch.

15. Valašské Meziříčí 9.6.201415 Construct and Terminate Twisted Pair Cables Cross-over and straight through cables A crossing is inside each switch. Transmit pins Receive pins Switch Another crossing must be in the path. Transmit pins Receive pins Switch

16. Valašské Meziříčí 9.6.201416 Construct and Terminate Twisted Pair Cables Cross-over and straight through cables Conclusion: There must be odd number of crossings in the whole path. PC Switch Like devices: Crossover cable Unlike devices: Straight-through cable

17. Valašské Meziříčí 9.6.201417 Construct and Terminate Twisted Pair Cables How to terminate UTP cables The plug is plugged into the jack.

18. Valašské Meziříčí 9.6.201418 Construct and Terminate Twisted Pair Cables How to terminate UTP cables Two standards on plugs and jacks

19. Valašské Meziříčí 9.6.201419 Construct and Terminate Twisted Pair Cables How to terminate UTP cables Crossover cable: A – B Straight-through cable: B – B (in Europe) Remember: A for America Straight-through cable: A – A (in America)

20. Valašské Meziříčí 9.6.201420 Construct and Terminate Twisted Pair Cables How to terminate UTP cables Hold the plug as if you wanted to insert it into the jack, and arrange the color pairs to correct color sequence. Jack

21. Valašské Meziříčí 9.6.201421 Construct and Terminate Twisted Pair Cables How to terminate UTP cables

22. Valašské Meziříčí 9.6.201422 Construct and Terminate Twisted Pair Cables Cable testing

23. Valašské Meziříčí 9.6.201423 Summary Physical cabling media must conform to standards Cabling best practices reduce attenuation and crosstalk