Panasonic 2 Line KX-TG9541C Operating Instructions Manual page 53

R Call sharing is only available for the line
selected in the line selection mode (page 17).
n While your headset is on a landline call:
To join the conversation with the handset, press
ML1N or ML2N.
Adjusting your headset receiver volume
Base unit
Press MDN or MCN repeatedly while using your
headset.
Note:
R Depending on your headset, the receiver
volume may not be adjustable.
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Using Bluetooth Devices
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