System Maintenance - Yealink VC800 User Manual

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User Guide for the VC800 Video Conferencing System

System Maintenance

190
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Why is the voice quality poor?
Users may receive poor voice quality during a call, such as intermittent voice, low volume, echo
or other noise. It is difficulty to diagnosis the root causes of the voice anomalies. The possible
reasons are:
Users sit too far from or near to the microphone.

The audio pickup device is moved frequently.

Intermittent voice is probably caused by voice packet loss or jitter. Voice packet loss may

occur due to network congestion. Jitter may occur due to information reorganization of
the transmission or receiving equipment, such as, delay processing, retransmission
mechanism or buffer overflow.
Noise devices, such as computers or fans, may make it difficult to hear each other's voices

clearly.
Wires may also cause this problem. Replace the old with the new cables, and then

reconnect to check whether the new cables provide better connectivity.
To configure the site name via the remote control:
Select (More menu).
1.
Press or to scroll to Setting and then press
2.
Press or to scroll to Advanced and then press
3.
Enter admin password (default password: 0000) in the Password field.
4.
Press .
5.
Press or to scroll to Reboot & Reset and then press
6.
Press or to scroll to Reboot and then press
7.
to expand the menu.
.
.
.