Plantronics CS55 User Guide - Page 9

HEADSET CONTROLS Key Feature Action Tone Listening volume minor adjust Rock back and forth Ascending/descending tones, 2 tones at limit Mute Short key press straight in 3 mid tones = Mute 3 low tones = Unmute NOTE: Tones repeat every 15 seconds when muted. Making/answering/ ending calls Short key press Mid tone - Low battery warning Return headset to charging cradle 1 tone every 10 seconds - Out of range warning-when on active call - Incoming call notification* Move closer to base 2 tones Press call control 3 repetitive tones button to answer call *Only works when using optional Handset Lifter. 16 BASE INDICATOR LIGHTS Talking/Muted (Green) Charging (Amber) Power (Red) Talking/Muted (Green) Charging (Amber) Power (Red) CS55 Action Charging Fully Charged Power Talking Muted CS50 Light Flashes amber Solid amber Solid red Solid green Flashes green 17