Polycom VVX 500 User Manual page 67

If the far side stops sending video, a 'no video' icon displays on your phone, as shown next. If the far side
is unable to send video—for example, if the far side is video-enabled, but doesn't have a camera
attached to their phone—a thunderbolt icon displays next to the 'no video' icon.
Note: Why Do I See a Different 'No-Video' Icon?
Depending on the phone or system that has stopped sending video, you may see a different icon
than the one shown above.
If you hold a video call, the person's video stream stops, and is replaced by a paused grayscale image
taken just before you held the call, as shown next. The person's video stream returns when you resume
the call.
Chapter 3: Using Video and the Polycom VVX Camera
55