Huawei TE20 Administrator's Manual page 112

TE20 Videoconferencing Endpoint
Administrator Guide
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Loopback Test
Your endpoint can transmit audio or video data on a channel to simulate an actual application
and test whether the output is satisfactory. You can perform a local loopback test to check the
local network connection or a remote loopback test to check the remote network connection.
When you perform a remote loopback test, data is transmitted from your site to a remote site,
and then back to your site. Table 11-2 lists the types of loopback tests available on your
endpoint.
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Table 11-2 Loopback tests
Test
Audio loopback
Video loopback
Remote audio
loopback
Remote video
loopback
Network Test
Table 11-3 Network test
Test
Network
Before a test, verify that the LAN network port indicator is green, which indicates that your
endpoint is correctly connected to an IP network.
Issue 01 (2016-09-01)
Sound test: Choose Maintenance > Diagnostics. On the Diagnostics page, click Sound
Test. While the test audio stored on your endpoint plays, check the sound quality.
Color bar test: Choose Maintenance > Diagnostics. On the Diagnostics page, click
Color Bar Test. Seven color bars are shown on the display for you to check the color
quality.
To enable your endpoint to communicate with other endpoints, stop the loopback test.
You cannot perform a loopback test on remote video if you are in a dual-stream
conference.
Item to Be Tested
Local audio module
Local video module
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Remote audio module
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Network transmission
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Remote video module
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Network transmission
Item to Be Tested
IP access
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11 Troubleshooting
Signal Stream
Microphone → 1 → 2 → Speaker
Camera → 3 → 4 → Monitor
Microphone → 1 → 5 → 6 → 7 → 8 →
6 → 5 → 2 → Speaker
Camera → 3 → 5 → 6 → 9 → 10 → 6
→ 5 → 4 → Monitor
Signal Stream
endpoint → LAN or public network
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