Callback
1. Select the “CALL BACK” menu.
2. Press the OFF hook switch 
.
3. Select the desired number by turning the “TUNE/TRACK/CH” dial.
4. Perform either of the following procedures.
– Press the OFF hook switch .
– Press the “TUNE/TRACK/CH” dial, then select the “DIAL” menu.
See also:
MUTE button (models without Hands-free system)
Press the “” button if you wish
to immediately cut the volume to zero.
The audio display will show “MUTE”.
If you press the button again, the original sound volume will return and “MUTE” turns o ...
Tone and balance control
Each brief press of the “TUNE/TRACK/ CH” dial changes the control modes in the
following sequence.
Choose the desired level for each mode by turning the “TUNE/TRACK/CH” dial. The
control func ...
Bluetooth® audio operation
NOTE
Depending on the connected device, it may not activate as per the following items or not work smoothly. ...