A participant is a contact (person or phone number) that was added to a conversation. Each participant has its own modality set that represents the state of the participant in this conversation for each modality.Namespace: Microsoft.Lync.Model.Conversation
Assembly: Microsoft.Lync.Model(in Microsoft.Lync.Model.dll)
public class Participant :
The action methods of the modalities (for example: BeginConnect, BeginHold, or other modality actions) can only be called for the self participant.