Sony NYSNO-10 Help Manual page 29

Help Guide
Helmet Mounted Wireless Headset
NYSNO-10
Talking within multiple members (Group Talk)
Perform the group registration in advance.
Press the TALK button on one of the remote controls.
1
When you hear a sound indicating Group Talk had just started, start the voice conversation.
2
To turn down the volume at once (Attenuate)
Press the ATT/EQ (Attenuate/Equalizer) button once.
To return to the original volume, press the button again, or press the + (volume) button on the remote control.
When finishing Group Talk
Press the TALK button on the remote control once.
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