User's Manual

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Headset Send Volume
A fixed gain that controls the volume sent by the Headset.
To configure Headset Send Volume via Web interface:
1. Click Setting → Voice.
2. Select the desired value in the Headset Send Volume field.
3. Click to save the configuration.
Handfree Send Volume
A fixed gain that controls the volume sent by the Handfree (speakerphone).
If Handfree AGC is enable, Handfree Send Volume option will not work.
To configure Handfree Send Volume via Web interface:
1. Click Setting → Voice.
2. Select the desired value in the Handfree Send Volume field.
3. Click to save the configuration.
Extra Loud
To configure Handset /Headset/Handfree extra loud via Web interface:
Handset /Headset/Handfree extra loud can control the size of the sound emitted from the speaker, and
you can control an additional +2~+12 db.