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Icon Name What it means
Mute The microphone is muted.
Battery status Shows the relative strength of the battery.
Volume level Shows the current volume level.
Using the Buttons
Button Press to Press & hold (2 seconds) to Press & hold (4 seconds) to
Multi-
function
In standby: redial the last number. -
While a call is ringing: answer -
the call.
On a call: hang up. -
In standby: activate voice dialing. -
While a call is ringing: reject the call. -
On a call: transfer the call to your phone -
(and back).
In standby: turn the -
BTSC1500 o.
Volume
Up
In standby: see the outgoing call -
log.
On a call: increase the volume. -
In standby: activate voice dialing on -
your second phone.
On a call: put the current -
call on hold and switch to
a waiting call.
Volume
Down
In standby: see the received call -
log.
On a call: decrease the volume. -
In standby: redial the last number on -
your second phone.
On a call: mute the microphone. -
On a call: hang up the -
current call and switch to
a waiting call.
The buttons only activate the function when you release them.