Motorola H720 ユーザーズマニュアル

status tones

powering on

an ascending tone

powering off

two descending tones

receiving a call

a ring tone

at maximum or minimum 
volume

two short tones when 
pressing Volume 
button

in a low battery state

high/low tones 
repeated every 
60 seconds

out of range of your phone

no audio indications; 
deteriorating quality

connected to your phone

three ascending tones

enabling call mute

two rapid ascending 
tones

disabling call mute

two rapid descending 
tones