Reasons for conference invitation state transition.
Assembly: Microsoft.Rtc.Collaboration (in Microsoft.Rtc.Collaboration.dll)
|No reason specified or unknown reason.|
|One of the remote endpoints is ringing. Only raised once.|
|Invitation has been accepted by the recipient.|
|Invitation delivery failed.|
|User invoked BeginAccept and server responded with ACK|
|The signaling session was terminated by the server|
No reason specified.
A 181 was received with no ms-retarget-reason parameter in the history info header or with no history info header at all.
Reason specified is unknown.
Invitation is being forwarded to another target.
The ms-retarget-reason parameter is set to "forwarding".
Invitation is being forwarded as a team call.
The ms-retarget-reason parameter is set to "team-call".
Invitation is being forwarded to a delegate.
The ms-retarget-reason parameter is set to "delegation".
|Invitation deliver is falling back to an MCU dial-out.|