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.
|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.|