Phone Display Is Wavy - Cisco 9971 Administration Manual
Unified ip phone 8961, 9951, and 9971 administration guide for cisco unified communications manager 10.0
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Camera, Audio, and Video Problems
• Ensure that the transmitting phone has the camera shutter completely open.
Phone Display Is Wavy
Problem
The display appears to have rolling lines or a wavy pattern.
Cause
The phone might be interacting with certain types of older fluorescent lights in the building.
Solution
Move the phone away from the lights or replace the lights to resolve the problem.
Video Freezes
Problem
The video is frozen.
Cause
When the phone stops receiving video packets, the video display pauses and displays the last decoded video
frame.
Solution
• Check whether the received packets count is incrementing or not, by navigating to Administrator
Settings > Status > Call Statistics > Video > Video statistics > Rcvr Packets statistics.
• Put the call on hold and then resume the call to clear the issue.
• If the transmitting phone is an IP phone, check the LED on top of the camera. If no light is illuminated
(either green or red), then the remote camera might not be transmitting video.
Video Is Too Dark
Problem
Video that the camera transmits is too dark or the subject too dark in the video.
Solution
The lighting conditions within the field of view of the camera affect the brightness of the video.
• Adjust the View Area for your camera. Try moving the location of the camera and check whether the
brightness improves.
Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager
10.0
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Troubleshooting
