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Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

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Page 1: Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

Chapter 14

Switching

• Circuit Switching

• Packet Switching

• Message Switching

WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

Page 2: Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

Figure 14-1

WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

Switched Network

Page 3: Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

Figure 14-2

WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

Page 4: Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

Figure 14-3

WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

Circuit-Switched Network

Page 5: Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

Figure 14-4

WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

Switch

Page 6: Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

Figure 14-5

WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

Folded Switch

Page 7: Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

Figure 14-6

WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

Page 8: Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

Figure 14-7

WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

Crossbar Switch

Page 9: Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

Figure 14-8

WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

Multistage Switch

Page 10: Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

Figure 14-9

WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

Switching Path

Page 11: Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

Figure 14-9-continued

WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

Switching Path

Page 12: Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

Figure 14-10

WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

TDM without TSI

Page 13: Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

Figure 14-10-continued

WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

TDM with TSI

Page 14: Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

Figure 14-11

WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

Time-Slot Interchange

Page 15: Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

Modified by Dr Perry Xiao, LSBU, 2003

Space-Division Switching• Advantages

Instantaneous

• Disadvantages

Number of crosspoints required

Time -Division Switching• Advantages

No crosspoints needed

• Disadvantages

Delays

Space- and Time-Division Comparison

Page 16: Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

Figure 14-12

WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

TST Switch

Page 17: Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

Figure 14-13

WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

Page 18: Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

Figure 14-14

WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

Datagram Approach

Page 19: Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

Figure 14-15

WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

Datagram Approach, Multiple Channels

Page 20: Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

Figure 14-16

WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

Switched Virtual Circuit

Page 21: Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

Figure 14-16-continued

WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

Switched Virtual Circuit

Page 22: Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

Figure 14-16-continued

WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

Switched Virtual Circuit

Page 23: Chapter 14 Switching Circuit Switching Packet Switching Message Switching WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

Figure 14-17

WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998

Message Switching