Audio - Huawei TE20 Administrator's Manual

TE20 Videoconferencing Endpoint
Administrator Guide

11.2.4 Audio

Table 11-8 lists the troubleshooting methods for audio problems.
Table 11-8 Methods for troubleshooting audio problems
Problem
Current noise is
generated when
the endpoint's
audio output
ports are
connected to
audio devices,
such as speakers,
tuning consoles,
and audio
matrices.
While the
endpoint is in use
during a
conference, no
audio is
delivered from
the local display
device.
Issue 01 (2016-09-01)
Possible Cause
Disconnect the endpoint's
audio output ports from
the audio devices. Check
whether the problem is
rectified.
If the problem persists,
the current noise is
caused by audio device or
cable issues.
If the problem is
rectified, check the
grounding status of the
audio devices and
endpoint.
Perform an audio test to
check whether the
problem occurs at your
site or a remote site.
If no audio is delivered
from the display device
during the audio test, the
problem exists at your
site.
If audio is properly
delivered from the
display device during the
audio test, the problem
occurs at the remote site.
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Solution
Replace the cables or repair the audio
devices.
 If the audio devices' shells are
grounded, the endpoint's shell must be
grounded nearby.
 If the audio devices' shells are not
grounded, the endpoint's shell does not
need to be grounded either.
Specifically, change the endpoint's AC
three-core power supply to two-core
power supply.
 If the chair site has muted the speaker
of your site, contact the chair site to
resolve this problem.
 If the display device volume is adjusted
to the lowest, restore the volume to its
default value.
 If the endpoint volume is adjusted to
the lowest, restore the volume to its
default value.
 If the audio cable is connected
incorrectly or insecurely, reconnect the
audio cable from the endpoint to the
display device.
 The microphone at the remote site has
been muted or the chair site has muted
this microphone. In this case, contact
the chair site to resolve this problem.
 No sound pickup device, such as a
microphone, is connected to the audio
input port. In this case, set the audio
source again or connect a sound pickup
device to the corresponding port.
 The related sound pickup device is
powered off. In this case, power on the
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