I See a Black Screen and Can’t See or Hear the Subscriber
Symptom
I can't see or hear the subscriber. I only see a black screen.
Applies To
- Video API
- Video Quality
- Audio Quality
Resolution
Run the Pre-call test on the client in order to determine if the right ports are open.
Cause
This problem usually occurs if there is a firewall that is blocking the user from making a streaming connection.
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