Panasonic KX-TG7842C Operating Instructions Manual page 58

Using Bluetooth Devices
Call sharing between your headset
and the handset
Important:
R To activate this feature, you should set
privacy mode to off beforehand (page 42).
n While the handset is on a landline call:
To join the conversation with your headset,
turn on the headset referring to your
headset operating instructions.
n While your headset is on a landline call:
To join the conversation with the handset,
press M N.
Adjusting your headset receiver
volume
Base unit
Press MDN or MCN repeatedly while using your
headset.
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TG78xxC(en)_1221_ver013.pdf 58 2012/12/21 11:21:32