What does the beeping sounds from the Plantronics CS50/Plantronics CS55 mean?
A. (1) One beep every 10 seconds is caused by a low battery warning. Recharge the battery by returning it to the base charge cradle for one to three hours until charge light stays lit or quits blinking. (2) Two beeps is an out of range warning. Move closer to the base unit. (3) Three rapid beeps every 15 seconds indicates your mute is on. Press the mute control once to turn it off. When the optional HL10 or HL1 handset lifer is connected, three rapid beeps indicate a call is coming into the headset. Press the talk button on the headset to answer the call.