public virtual void JoinSession(RtpSession session, string participantName)
{
fSession = session;
fParticipantName = participantName;
// Must hook up events before creating sender so we know when the
// ChannelType stream is added.
HookRtpEvents();
// Add the channel for graphics commands
fRtpSender = fSession.CreateRtpSender(fParticipantName, ChannelType, null);
//fRtpSender = fSession.CreateRtpSenderFec(fParticipantName, PayloadType.xApplication2, null, 0, 200);
//fRtpSender.DelayBetweenPackets = 0;
}