Chap.3 Video and Audio Compression
24
Full duplex
Voices can be transmitted in both directions at the same time. As in Figure 3.9, the control site can speak to and
receive voices from the monitored site. So does the monitored site.
Router
Figure 3.8 Half duplex allows communications in one direction at a time
Figure 3.9 Full duplex allows communications in both directions at a time
Half duplex
Voices can be transmitted in both directions, from the sender or the receiver, but only one direction at a time
(Figure 3.8).
Содержание IP Surveillance
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