Dell UC300 User Manual page 18

No audio in the
headset – Using
with Softphone on a
computer
18 │ Troubleshooting
Cannot hear sound
in the headset from
Softphone
• Make sure that the
USB port is not
disabled.
• Try using another
USB port.
• Try plugging the
headset directly
into one of the
computer's USB
ports and NOT
into a USB hub.
• Try using
the headset
on another
computer.
• Make sure that
no settings in
Windows or other
applications
such as firewall,
anti-virus and
security programs
etc. prevent
connectivity with
the USB interface.
• Make sure that
the headset
is connected
properly and
powered up.
• Make sure that the
speaker volume is
appropriately set
on the headset.
• Make sure that
the speaker is not
muted on the
softphone and
volume is set to
the appropriate