Call sharing between your headset and the
handset
Important:
• To activate this feature, you should set call
sharing mode to on beforehand (page 117).
• 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.
• While your headset is on a landline call:
To join the conversation with the handset, press
.
Adjusting your headset receiver volume
Base unit
+
Press [
] or [
headset.
-
] repeatedly while using your
155