When using certain sports helmets, and while driving at higher speed, the wind impact may inadvertently activate the intercom. To avoid this from happening, you may disable the VOX feature by pressing and holding the Volume Up and Volume Down buttons simultaneously until you hear a beep. NOTE: The Enable/Disable Voice Connect feature affects only the Intercom. You will still be able to answer calls by Voice if you disable the VOX feature. Once VOX is disabled, you may use the MC button, single press or double press, to establish/end Intercom calls with your Primary or Secondary buddy, respectively.