Plantronics VOYAGER 835 User Guide - Page 10

Headset Controls and Indicators Check battery power Action Indicator Light Press and hold both the call control and volume down buttons for about 2 seconds. The indicator light flashes red to show the charge level. Red flashes Battery level 1 More than 2/3 full 2 1/3 - 2/3 full 3 Less than 1/3 full Tone None Adjust the volume Tap the up or down (during call) volume button Blue flash Brief low tone (2 low tones when volume limit is reached) WARNING Do not use headsets at high volumes for an extended period of time. Doing so can cause hearing loss. Always listen at moderate levels. See www.plantronics.com/healthandsafety for more information on headsets and hearing. Voice Dial Press and hold the call Blue flash repeating control button for 2 seconds every 2 seconds None Redial last number Tap the call control button twice Blue flash repeating every 2 seconds Two brief low tones 6