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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.

Session type Media types Participants
PC-PC Audio send and receive
Video send and receive
Whiteboard (T120)
Application sharing (T120)
2
PC-phone Audio send and receive 2
Phone-phone Audio send and receive 2 or more
IM Text only 2
Multiparty IM Text only 2 or more
APPLICATION Media streaming handled by the application. 2