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EDC board failure resulting in a site only sound no image

Publication Date:  2012-09-22 Views:  57 Downloads:  0
Issue Description
When a site attending a conference ,found can only hear the sound, but can not see other sites image.
Alarm Information
Handling Process
Do loopback test to the terminal host function veneer, found that the EDC board loopback fails. Replace the EDC board, the problem can be resolved.
Root Cause
EDC shoulder the task of image codec, so when the EDC board failure will not be able to process the image stream thus causing image problems.