Tekkeon ezTalker ET3000 Manuel D’Utilisation

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Visual and Audible Indicators 
(continued)
LED Status Indicators
Status
Indicates
Flashes at two-second intervals
Headset is in standby mode, ready to make and receive calls.  
Is off
Headset is off.
Audible Indicators
Tone
Indicates
Double beep, increasing in pitch
Headset has been turned on.
Double beep, decreasing in pitch
Headset is about to turn off. 
A beep every 32 seconds
Battery is low.
Double chime, followed by
Headset has been put into pairing mode. 
low beep
Beeps every four seconds
Headset is muted.
while a call is connected