Huawei 9000 VCT V100R011 Administrator's Manual page 177

HUAWEI 9000 HD Video Terminal
Administrator Guide
Problem
After the local site
joins a conference,
the remote video can
be displayed
continuously but the
video quality is not
satisfactory.
When the local site is
not in a conference,
the local video is too
bright or too dark.
After the local site
joins a conference
and a remote site
shares its computer
desktop, the VGA
display at the local
site cannot display
the computer
desktop of the
remote site.
A computer is
connected to the
local terminal but the
local VGA display
does not show the
computer desktop.
Issue 09 (2012-09-03)
Possible Cause
Contact and ask the
administrator of the remote site
to perform a local video
loopback test. If the video
quality is good, it indicates that
the video frame rate set at the
remote site is too high.
The video settings of the
terminal are incorrect.
The video settings of the
display are incorrect.
The camera is faulty.
The resolution of the computer
that is used for the VGA input
at the remote site exceeds the
maximum resolution supported
by the local terminal.
The local VGA display is not
supported.
The capability of the VGA
display is limited. The
resolution or refresh rate of the
local SXGA output is too high
to be supported by the VGA
display.
The local terminal supports
only certain combinations of
resolutions and refresh rates.
The combination of the
resolution and refresh rate set
on the computer that is used for
the VGA input, however, is not
supported by the terminal.
Therefore, the local site cannot
display or properly display the
remote computer desktop.
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11 Maintenance and Troubleshooting
Solution
Contact and ask the administrator of
the remote site to disconnect from
the conference, reduce the video
frame rate, and then join the
conference again.
Set the video parameters of the
terminal and the display to default
values.
Set the video parameters of the
terminal and the display to default
values. If the problem persists,
change the settings as follows: If the
video is still too bright, set Room
light to Bright. If the video is too
dark, set Room light to Dark.
Send the camera to the camera
distributor for maintenance.
Contact and ask the administrator of
the remote site to change the
resolution and refresh rate of the
computer that is used for the VGA
input to a combination of the values
supported by the local terminal.
Replace the VGA display.
Set the resolution and refresh rate of
the local SXGA output interface to
a combination of the values
supported by the VGA display.
Set the resolution and refresh rate of
the computer used for VGA input to
a combination of the values
supported by the terminal.
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