Enumerates the media stream directions.
Assembly: Microsoft.Lync.Model (in Microsoft.Lync.Model.dll)
Do not use this property to determine if a conversation is inbound or started locally. Instead, iterate on the conversation modalities collection and examine the Modality.State property of the InstantMessageModality. If the state of the modality is ModalityState.Notified, then the conversation is inbound.