Cisco 8831NR Administration Manual page 138

Audio Quality Poor
Cause
You may be experiencing one of the following:
• The user is not facing the conference phone when speaking.
• The user is too far from the conference phone when speaking.
• The wireless microphones are being moved.
Solution
Consider using external microphones, or increasing the room coverage by using Linked Mode.
Audio Quality Poor
Problem
User complains about poor audio quality.
Cause
You are using a narrow band rather than a wide band codec.
Solution
Verify on the CUCM that the default codec is G.722 (wide band).
No Audio Between Units
Problem
There is no audio to or from the secondary unit in Linked Mode.
Cause
The daisy cable is not connected properly.
Solution
• Verify that the daisy cable is properly seated and that it is routed inside the cable grooves.
• Verify that the external microphone icon is present on the display if one is connected.
No Audio from External Wireless Microphones
Problem
There is no audio to or from the external wireless microphones.
Cause
The wireless microphones are not paired or are not linked with the device.
Cisco Unified IP Conference Phone 8831 and 8831NR Administration Guide
128
Troubleshooting and Maintenance