- a RecvOnly audio stream with content DTX and the participant label for each participant of the conference. A secured conference will have N audio streams (1 sendrecv for the local participant and N-1 recvonly for the other participants)
- add security level to the conference parameters
- pass security level information to the conference server
- add encryption information to the database table storing conferences
- pass security level down to MSAudioConference and MSVideoConference objects
- add extra video stream for encrypted conference in active speaker layout