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Appendix C Troubleshooting
© Polycom, Inc. 81 ViaVideo User’s Guide
Video is out of focus. Either the camera is out of
focus, or there is not enough
light in the area and the
camera cannot generate a
clear image.
Use the focus wheel above
the camera lens to adjust
focus.
If this does not resolve the
problem, add more light to
the area.
Video has lots of
noise/colored dots appear in
my picture.
There is not enough light for
the ViaVideo camera to
operate properly.
Add more light to the area.
Frame refresh rate is low. The lighting in your office is
insufficient and ViaVideo is
automatically compensating
for this by increasing the
exposure time so that it can
gather more light.
Add more light to the area.
The near video display is
dark.
Near video appears darker
in the ViaVideo application
than it does on the far site.
Although there is usually no
problem with the transmitted
image, using a dark
background, or wearing
dark clothing always
provides for better image
quality.
A lightning bolt is displayed
on-screen during calls.
There has been an error in
data transmission outside of
normal parameters.
Although this is not a
serious error, you may have
selected a calling speed that
is too high for your network
bandwidth.
1. Activate the Dynamic
Bandwidth option
(System
Info>Setup>H.323>QOS)
2. Try making calls at a
lower speed, or check
with your system
administrator for the
optimum speed.
Problem Explanation Solution
ViaVideoUG.book Page 81 Thursday, December 7, 2000 2:49 PM