The document discusses different methods for switching in telecommunications networks, including circuit switching, packet switching, and message switching. It provides figures illustrating circuit-switched networks, various switch designs like crossbar and multistage switches, and time-division multiplexing with and without time-slot interchange. Packet switching techniques like the datagram approach and switched virtual circuits are depicted. Message switching is also mentioned.

1. Chapter 14
Switching
• Circuit Switching
• Packet Switching
• Message Switching
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2. Figure 14-1
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Switched Network

3. Figure 14-2
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4. Figure 14-3
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Circuit-Switched Network

5. Figure 14-4
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Switch

6. Figure 14-5
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Folded Switch

7. Figure 14-6
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8. Figure 14-7
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Crossbar Switch

9. Figure 14-8
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Multistage Switch

10. Figure 14-9
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Switching Path

11. Figure 14-9-continued
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Switching Path

12. Figure 14-10
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TDM without TSI

13. Figure 14-10-continued
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TDM with TSI

14. Figure 14-11
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Time-Slot Interchange

15. Figure 14-12
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TST Switch

16. Figure 14-13
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17. Figure 14-14
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Datagram Approach

18. Figure 14-15
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Datagram Approach, Multiple Channels

19. Figure 14-16
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Switched Virtual Circuit

20. Figure 14-16-continued
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Switched Virtual Circuit

21. Figure 14-16-continued
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Switched Virtual Circuit

22. Figure 14-17
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Message Switching