General Requirements

The following table shows the media types and participants allowed for each type of session. For a PC-PC session, the media type can be audio, video, or both. Application sharing and whiteboard can also be added to this session. The phone-phone session is a third-party call initiated from a third-party computer, which can be an ITSP or a corporate-deployed third-party server. For more information about the session requirements, see the Session Information and Server Requirements topics.