- Operation -
54
Event
Audio signals
Volume modified by one level
One single, high-pitched acoustic signal on
pressing the Volume Up/Down button
Charge status too low
5 short acoustic signals at intervals of 20
seconds
Headset outside range
No audio signal, poor sound quality
Call activation
Single, low acoustic signal (dependent on
your Bluetooth
t
telephone)
Caller ID not recognised
Double high/low acoustic signal if sup-
ported by your Bluetooth
t
telephone
No network / services
(”Handsfree” Bluetooth
t
profile )
5 shorts acoustic signals at intervals of 60
seconds if your Bluetooth
t
telephone does
not find a network within 20 seconds