Session Information

To create a session, you use the IRTCClient::CreateSession method. To activate the session, you use the IRTCSession::AddParticipant method. A session is initiated via the SIP proxy server if the URL entered in IRTCSession::AddParticipant is e-mail or a telephone number. If the IP address or machine name is entered, a direct communication link is set up and the SIP proxy is not required. For a complete list of the requirements for a SIP session, see the Server Requirements section. For general session information, see General Requirements.

Session type Definition
PC-PC An audio, video, or both audio and video communication between two computers.
PC-phone An audio communication initiated from a computer to a PSTN device.
Phone-phone An audio call between two or more PSTN devices.
IM A session that allows two participants to communicate through real-time text-based messages.
MIM A session that allows two or more participants to communicate through real-time text-based messages.
Application The application handles the session negotiations for the session.