Huawei TE30 User Manual page 113

HUAWEI TE30 Videoconferencing Endpoint
User Guide
Problem
While the TE30 is in
use during a
conference, the
video of a remote site
is not clear. For
example, there are
artifacts, frozen
images, or
discontinuity in the
video output.
While the TE30 is in
use during a
conference, the
video of a remote site
can be displayed
continuously but the
video quality is not
satisfactory.
While the TE30 is
not in use during a
conference, the
video displayed on
Issue 01 (2013-03-27)
Possible Cause
Faults occur in the local video
module.
The remote camera is set to
focus on a close or distant
scene. When the remote camera
is not set to automatic focus and
the scene captured by a remote
camera changes, the captured
video becomes unclear.
Incorrect audio protocols are
specified for conferences
whose data transmission rates
are lower than or equal to 256
kbit/s. To view the data
transmission rate of a
conference, access the Status
screen. For example, if the
conference rate is 256 kbit/s
and the audio bandwidth is 64
kbit/s, the video bandwidth is
only 196 kbit/s. In this case, the
video quality is poor.
Only low video bandwidth is
available for your site because
the network is busy.
The quality of a network
connection device, such as an
optical fiber transceiver, is
poor. As a result, certain data is
lost during transmission.
Ask the remote site
administrator to perform a local
video loopback test. If the video
quality is good, the video frame
rate set at the remote site is too
high.
The video settings of the TE30
are inappropriate.
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12 Troubleshooting
Solution
Perform a local video loopback test.
If the video quality is poor, faults
occur in the local video module. In
this case, send the TE30 to the local
distributor for maintenance.
Set the remote camera to automatic
focus.
If the conference rate is lower than
256 kbit/s, set the audio protocol to
G.728 to reduce the bandwidth used
for audio transmission.
Do not initiate conferences during
network busy hours.
Replace the related network
connection device.
Ask the administrator of the remote
site to disconnect from the
conference, set the video frame rate
to a smaller value, and join the
conference again.
Retain the default values for the
video parameters on the TE30 and
monitor.
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