System Maintenance - Yealink VC800 User Manual

User Guide for the VC800 Video Conferencing System
Ensure that the ring volume is not set to 0. If it is, the

bar of the display device, and the
Adjust the ring volume when the system is idle via the remote control or CP960 conference

phone. For more information, refer to
Why can't I hear the other site clearly during a call?
Ensure that the speaker volume of the far site is not set too low.

Muffled audio reception from the far side may be caused by highly reverberant rooms.

Speak in close proximity to the phone.
Adjust the priority order for your audio codec if you have chosen a low-bandwidth audio

codec to be first.
For best results, ensure that the caller is using a Yealink video conferencing system. Audio

quality from your video conferencing system will vary when calling a non-Yealink system.
Dust and debris may cause audio quality. Do not use any kind of liquid or aerosol cleaner

on the phone. A soft, slightly damp cloth should be sufficient to clean the top surface of
the phone if necessary.
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.

System Maintenance

To reboot the system via the remote control:
Select
1.
Press or
2.
Press or
3.
194
Volume
(More menu).
to scroll to Setting and then press
to scroll to Advanced and then press
icon will appear on the status
icon will appear on the CP960's touch screen.
on page 63.
to expand the menu.
.