What do the various audio tones mean?
| AUDIO TONE
|Ring tone||Incoming call|
|Short tone||Phone network not available|
|High to low tone||End call|
|One short tone when pressing Volume button during a call||Volume at minimum or maximum|
|Low tone (repeated every 15 seconds)||Mute reminder|
|Low to high tone||Connection confirmation/voice activation|
|No audio indications; deteriorating quality||Out of range|
|Two tones repeated every minute||Low battery|
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