IAudioStream Events | 
The IAudioStream type exposes the following members.
| Name | Description | |
|---|---|---|
| OnDirectionChange | 
            Raised when the signalling state changes.
              (Inherited from IStream.) | |
| OnReceiveDtmfTone | 
            Raised when a DTMF tone is received.
              | |
| OnReceiveDtmfToneChange | 
            Raised when the received DTMF tone changes.
              | |
| OnSendDtmfTone | 
            Raised when a DTMF tone is sent.
              | |
| OnSendDtmfToneChange | 
            Raised when the sent DTMF tone changes.
              |