8/28/2008 Each session must be created and then activated.
To create a session, use IRTCClient::CreateSession.
To activate a session, after the connection is established, use IRTCSession::AddParticipant.
If the URI is an email address or telephone number, the session is initiated through the SIP proxy server.
If the IP address or machine name is entered, a direct peer-to-peer communication link is set up. A SIP proxy is not used and is not required.
Windows Embedded CE supports the following types of sessions.
| 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. |
For information about the server requirements for a SIP session, see SIP Server Requirements.
Other Resources
Using the RTC Client API