Cisco 8961 Administration Manual page 302

Camera, audio, and video problems
• Verify that the camera is connected properly by unplugging and reconnecting the camera to the phone.
• Verify that video is enabled in Cisco Unified Communications Manager.
• Check the resolution of the transmitting endpoint. Cisco Unified IP Phone 8961, 9951, and 9971 does
not display videos that use a resolution higher than VGA. If the other endpoint transmits at a resolution
greater than VGA, such a transmission results in a black screen.
• Verify that packets are being received. Check the Rcvr Packets (would be zero in this case) in
Administrator Settings > Status > Call Statistics > Video > Video Statistics.
• 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 also Cisco Unified IP Phone 8961 or 9951 or 9971, 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.
Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager
10.0 (SIP)
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