Switching: Introduction, circuit switched networks, packet switching, structure of a switch

1. SWITCHING
CIRCUIT SWITCHING
PACKET SWITCHING
CHAPTER III

2. Switched Network
Every time in
computer network you
access the internet or
another computer
network outside your
immediate location,
your messages are sent
through a maze of
transmission media and
connection devices.
The mechanism for moving information between
different computer network and network segment is
called switching in computer network.

3. SWITCHING METHODS

4. Circuit-Switched Network
Circuit-switched is a type of network in which a physical path is
obtained for and dedicated to a single connection between two end-
points in the network for the duration of the connection.
Ordinary voice phone service is circuit-switched.
The telephone company reserves a specific physical path to the number
you are calling for the duration of your call.
During that time, no one else can use the physical lines involved

5. Switch

6. CIRCUIT SWITCHING

7. Figure 14-7
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Crossbar Switch

8. Figure 14-8
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Multistage Switch

9. Figure 14-9
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Switching Path

10. Figure 14-9-continued
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Switching Path

11. Figure 14-10
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TDM withoutTSI

12. Figure 14-10-continued
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TDM withTSI

13. Figure 14-11
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Time-Slot Interchange

14. Figure 14-12
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TST Switch

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

17. Figure 14-15
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Datagram Approach, Multiple Channels

18. Figure 14-16
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SwitchedVirtual Circuit

19. Figure 14-16-continued
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SwitchedVirtual Circuit

20. Figure 14-16-continued
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SwitchedVirtual Circuit