Available operations during call – Sony MEX-N4000BT User Manual
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Rotate the control dial to select a name 
or phone number from the call history, 
then press it.
The phone call starts.
1
Press CALL, rotate the control dial to 
select [DIAL NUMBER], then press it.
2
Rotate the control dial to enter the 
phone number, and lastly select [ ] 
(space), then press ENTER*.
The phone call starts.
* To move the digital indication, press SEEK +/–.
Note
[_] appears instead of [#] on the display.
1
Press CALL, rotate the control dial to 
select [REDIAL], then press it.
The phone call starts.
You can store up to 6 contacts in the preset dial.
1
Select a phone number that you want to 
store in the preset dial, from the 
phonebook, call history or by inputting 
the phone number directly.
The phone number appears in the display of 
this unit.
2
Press and hold a number button (1 to 6) 
until [MEM] appears.
The contact is stored in the selected preset 
number.
1
Press SRC, rotate the control dial to select 
[BT PHONE], then press it.
2
Press a number button (1 to 6) to select 
the contact you want to call.
3
Press ENTER.
The phone call starts.
You can make a call by saying the voice tag stored 
in a connected cellular phone that has a voice 
dialing function.
1
Press CALL, rotate the control dial to 
select [VOICE DIAL], then press it.
Alternatively, press ENTER while the App 
Remote function is off.
2
Say the voice tag stored on the cellular 
phone.
Your voice is recognized, and the call is made.
To cancel voice dialing
Press ENTER.
Available Operations during 
Call
To preset the volume of the ringtone and 
talker’s voice
You can preset the volume level of the ringtone and 
talker’s voice.
Adjusting the ringtone volume:
Rotate the control dial while receiving a call.
Adjusting the talker’s voice volume:
Rotate the control dial during a call.
To adjust the volume for the other party (Mic 
gain adjustment)
Press MIC.
Adjustable volume levels: [MIC-LOW], [MIC-MID], 
[MIC-HI].
To reduce echo and noise (Echo Canceler/
Noise Canceler Mode)
Press and hold MIC.
Settable mode: [EC/NC-1], [EC/NC-2].
To transfer a call
In order to activate/deactivate the appropriate 
device (this unit/cellular phone), press MODE or use 
your cellular phone.
Note
Depending on the cellular phone, handsfree connection 
may be cut off when call transfer is attempted.
To check the status of SMS/email*
flashes when a new SMS/email is received, and
stays lit when there are unread messages.
* Available only for a cellular phone supporting MAP
(Message Access Profile).
Calling by phone number input
Calling by redial
Presetting phone numbers
Calling by preset number
Calling by voice tags