Yealink VC Series - Page 172

Administrator‘s Guide for Yealink Video Conferencing Systems
162
 Ensure that the display device has suitable resolution.
 Check whether the packet has been lost. For more information about packet loss,
refer to Viewing Call Statistics on page 157.
 Ensure that camera settings are configured correctly, such as brightness and white
balance.
 Avoid high-intensity indoor light or direct sunlight on the camera.
 Ensure that the local audio output device is connected correctly.
 Use audio diagnose to check whether the audio device is working normally.
 Ensure that the ringer volume is not set to the minimum.
 Check whether the far site is muted.
 Ensure that the local audio input device is connected correctly.
 Check whether the near site is muted.
 Check whether the system has enabled the auto answer mute feature.
 Check whether the near site camera is connected to the VC400/VC120 codec
correctly.
 Check whether camera is powered on, and the LED indicator illuminates green.
 Check whether the camera is selected for the current video input source.
 Check the screen layout to see whether the remote video image is shown in full
size.
 Check whether a PC is connected to the VC400/VC120 codec.
 Check whether the PC is sending a signal.