User Guide for the VC800 Video Conferencing System190Why is the voice quality poor?Users may receive poor voice quality during a call, such as intermittent voice, low volume, echoor other noise. It is difficulty to diagnosis the root causes of the voice anomalies. The possiblereasons 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 mayoccur due to network congestion. Jitter may occur due to information reorganization ofthe transmission or receiving equipment, such as, delay processing, retransmissionmechanism or buffer overflow. Noise devices, such as computers or fans, may make it difficult to hear each other's voicesclearly. Wires may also cause this problem. Replace the old with the new cables, and thenreconnect to check whether the new cables provide better connectivity.System MaintenanceTo configure the site name via the remote control:1. Select (More menu).2. Press or to scroll to Setting and then press to expand the menu.3. Press or to scroll to Advanced and then press .4. Enter admin password (default password: 0000) in the Password field.5. Press .6. Press or to scroll to Reboot & Reset and then press .7. Press or to scroll to Reboot and then press .
