ARM Electronics MP13DVPDN - Manual (Page 64)

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7.4.6 Audio Mode and Bit Rate Settings
The audio setting page is show as below. In the Audio page, the Administrator
can select one transmission mode and audio bit rate.
Transmission Mode
• Full-duplex (Talk and Listen simultaneously)
In the Full-duplex mode, the local and remote sites can communicate with
each other simultaneously, i.e. both sites can speak and be heard at the
same time.
• Half-duplex (Talk or Listen, not at the same time)
In the Half-duplex mode, the local/remote site can only talk or listen to the
other site at a time.
• Simplex (Talk only)
In the Talk only Simplex mode, the local/remote site can only talk to the
other site.