| Troubleshooting |
273
Audio Issues
Symptom
Reason
Solution
The volume is set to 0.
Adjust the volume.
You cannot hear the audio during
a call.
The far site mutes the
microphone.
Contact the far site to check
whether the microphone is
unmuted.
The speaker volume is too low.
Adjust the volume.
The muffled audio reception from
the far site may be caused by
highly reverberant rooms.
Contact the far site to speak in
close proximity to the phone.
You choose a low-bandwidth
audio codec.
Adjust the priority order of your
audio codec.
Noise devices, such as
computers or fans.
Enable noise suppression.
You cannot hear the audio clearly
during a call.
Dust and debris may cause the
audio quality.
Do not use any kind of liquid or
aerosol cleaner on the phone. A
soft, slightly damp cloth should be
sufficient to clean the top surface
of the phone if necessary.
No audio input device.
Audio input device is connected
correctly.
The speaker of the far site is
obscured or damaged.
Ensure that speaker is not
obscured or damaged. Do not
stack items on top of the CP960
conference phone.
Far site cannot hear your audio
during a call.
Your microphone is muted
Unmute the microphone.
The volume of the far site is set to
0.
Contact the far site to adjust the
volume.
The users sit too far from or near
to the microphone.
Adjust the distance.
The audio pickup device is moved
frequently.
Put the audio pickup device in the
fixed location.
Network congestion.
Contact the network
administrator.
You may experience poor voice
quality during a call, such as
intermittent voice, echo or other
noise.
Cable gets old.
Replace the old cables with the
new cables, and then check
whether the new cables provide
better connectivity.
You cannot hear the ring tone
when receiving a call.
The volume is set to 0.
Adjust the volume.
