I would like to ask you about the content sending via call. When we have the call one to one, we can send the content wihtout troubles. But during the multipoint call, just someone can see the content. All endpoints have two displays and as I wrote, in one to one call it works. Should I active any feature or how to resolve it.
Hard to know since not a lot of details provided but taking a guess at it I would assume you are using the internal MP and there are not enough ports open on the firewall at the host site to support all the remote sites.