I've noticed that on the Jabber 4.4 for Mac client, when I dial into an endpoint (I use C40, C20, and SX20), occasionally all I see on the client is a solid black image. The farend does see the person in front of the client. If you quit the client, and redial the endpoint, it will most likely connect correctly. I would say about 25% of the time, it requires multiple attempts until the client can display the video.
I verified that the endpoint was transmitting video. My search history in VCS shows the call conntected without issue.
Has anyone seen this?