
Multiplexing and Switching 101
Output lines
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1
2
3
4
Input
lines
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Figure 5.23 A 4 ×4Cross-barSwitch
21. What are the two types of switch technologies used in circuit switching? Compare them.
Ans: In circuit switching, two types of switch technologies are used, namely, space-division switch
and time-division switch.
Space-Division Switch
In space-division switching, many different connections in the circuit that are active at the same time
use different switching paths which are separated spatially. Initially, this technology was developed for
the analog signals; however, presently, it is being used for both analog signals and DSs. Space-division ...