AudioProblem Cause and SolutionThe other party cannot hearyour voice.• The microphone cable is not properly connected.→ Check that the microphone is properly connected to the unit (Page 20).Perform self diagnosis, and check the performance of the microphonesthat are connected to the unit (Page 114).• The microphone is muted.→ Press [MIC MUTE] on the remote control, or press the MIC Mute buttonon the Boundary Microphone to unmute the microphone (Page 72).• "Default MIC Mute set (Make Call)" is set to "ON".• "Default MIC Mute set (Incoming)" is set to "ON".→ The microphone is muted at the time when communication starts.Confirm the settings (Page 106).• The microphone is being obstructed.→ During the video conference call, do not block the microphone with yourhand or other object.• You are too far from a microphone.→ Speak close to a microphone.• More than 5 Digital Boundary Microphones are connected in cascade.→ Connect no more than 4 Digital Boundary Microphones at a time.• A headset is connected.→ When a headset is connected, audio input from Boundary Microphonesis disabled. To use the Boundary Microphones, disconnect the headset.• There may be a problem with your communication lines.→ Contact your dealer.The sound cuts out. • You are too far from a microphone.→ Speak close to a microphone.• The microphone or unit is being moved during a video conference call.→ Do not move the unit or the microphone during a video conference call.• The microphone is being obstructed.→ During the video conference call, do not block the microphone with yourhand or other object.• There may be a problem with your communication lines.→ Contact your dealer.The sound volume is low orcannot be heard at all.• The unit’s volume settings are too low.→ Increase the volume level (Page 71).Note• You can set the volume level of a video conference call beforestarting the call. Confirm the settings (Page 109).• The other party’s microphone has been muted.→ Have the other party unmute their microphone.• The display’s volume settings are too low.→ Increase the volume level of the display.• A headset is connected.→ When a headset is connected, audio output from the display orspeakers is disabled. Disconnect the headset.Document Version 2015-08 User Manual 177Additional Information
