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Basic Setting > Audio
Basic Setting > Audio > Device Audio Setting > Audio
There are five kinds of the audio mode to user: Full duplex, half duplex, simplex microphone only,
simplex amplifier only and audio off.
Full duplex:
Allow using a microphone and amplifier at the same time, or turning them off.
Half duplex:
Allow using a microphone or amplifier by manual switch.
Simplex microphone only:
Allow using the microphone only.
Simplex amplifier only:
Allow using the speaker only.
Audio off:
Turns audio off; i.e. both the microphone and speaker are off.
Basic Setting > Audio > Device Audio Setting > Audio In
There are five kinds of the audio codec to user: G711a, G711u, G726/32K and AMR. Select the
audio codec to use it for audio encryption.
Basic Setting > Audio > Device Audio Setting > Audio Out
There are five kinds of the audio codec to user: G711a, G711u and G726/32K. Select the audio
codec to use it for audio decryption.
Code
Compression Bitrates (Kbit/s)
Note
G711a
64
PCM (For American System)
G711u
64
PCM (For European System)
G726/32K
32
ADPCM
AMR
4.75
Audio transfer mode
Audio encryption format
Audio decryption format
Summary of Contents for ALC-9171
Page 1: ...1 Version 2 0 Date 2010 03 18 Firmware Version 1 00 ...
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Page 98: ...98 Modify Modifies the setting value Delete Removes the setting value Modify Remove ...