Volume adjustment, To adjust your earpiece volume, Activating handsfree – Nortel Networks C4030 User Manual
Page 13: To activate handsfree, Mute ringing, Switch off without answering the call

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Volume Adjustment
You can adjust your handset’s earpiece volume for your listening comfort.
To adjust your earpiece
volume:
1.
During a call, press the
W
key
once to increase earpiece volume
(or loudspeaker volume in loud
speaking mode).
2.
Press the
W
key again to return to
the normal level.
When the call ends, the volume level switches back to the default setting.
Activating Handsfree
You can enable your handset as a speakerphone to allow handsfree
operation.
To activate handsfree:
1.
During a call, press the handsfree
key.
2.
Press the handsfree key again to
switch handsfree off.
You can also press the handsfree key to initiate or answer a call and
simultaneously switch on the handset. To hang up, press the
j
key.
Mute Ringing
You can switch off handset ringing during an incoming call.
Switch off without answering
the call:
While the handset is ringing, press
the
O
key.