![Alinking ALS-7721 Скачать руководство пользователя страница 49](http://html1.mh-extra.com/html/alinking/als-7721/als-7721_user-manual_2897514049.webp)
49
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.
Mode:
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.
Audio Source:
Select the audio channel to set the codec by each channel or all channels, and the Audio Source
means the LINE IN device.
Basic Setting > Audio > Device Audio Setting > Audio In
There are three kinds of the audio codec to user: G711a, G711u and G726/32K. Select the audio
codec to use it for audio encryption.
Basic Setting > Audio > Device Audio Setting > Audio Out
There are three 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
Basic Setting > Audio > Device Audio Setting > Mic Input
The audio channel will integrate the package of LINE IN and MIC IN. If the selection is the audio 1,
the channel 1 will provide the LINE IN and MIC IN audio in the same time.
Audio transfer mode
Audio encryption format
Audio decryption format