What are the Tones for the CS500 Series Headsets?

Out of Range - 2 beeps (one “mid” tone when back in range)

Low Battery -1 beep every 10 sec (Recharge headset for 1-3 hours or until charge light goes solid)

Mute - 3 rapid beeps every 15 seconds when engaged

Incoming call - 3 short beeps for each ring (only if you have an HL10 handset lifter)

Hearing Volume - When adjusting the incoming hearing volume using the small switch (or '+' or '-' button) on the headset top, you’ll hear a single beep tone each time you ratchet up or down the hearing volume.