Can someone help me with this? I know there were lots of similar questions about this but I still cannot find an answer. This is the error that I see in the Event Log Viewer:
User failed to join the conference.
Microsoft.Rtc.Collaboration.ConferenceFailureException:The operation failed due to a response from the server. For more information, examine the properties on the exception and inner exception.
at Microsoft.Rtc.Signaling.SipAsyncResult`1.ThrowIfFailed()
at Microsoft.Rtc.Signaling.Helper.EndAsyncOperation[T](Object owner, IAsyncResult result)
at Microsoft.Rtc.Collaboration.McuSession.EndSendCommandInternal(IAsyncResult result)
at Microsoft.Rtc.Collaboration.AudioVideo.AudioVideoMcuSession.EndTransfer(IAsyncResult result)
at Microsoft.LiveServer.Caa.CaaCall.EndTransfer(IAsyncResult asyncResult, Boolean& retry, Exception& caught)
Detected at System.Environment.get_StackTrace()
at Microsoft.Rtc.Collaboration.ConferenceFailureException..ctor(String message, Exception innerException)
at Microsoft.Rtc.Collaboration.Conferencing.SendCommandAsyncResult.CreateConferenceFailureException(ConferenceCommandResponse commandResponse, Exception innerException)
at Microsoft.Rtc.Collaboration.Conferencing.SendCommandAsyncResult.ProcessCccpResponse(SipMessageData messageData, responsetype response, Boolean& isPendingResponse)
at Microsoft.Rtc.Collaboration.Conferencing.SendCommandAsyncResult.ProcessStatusMessage(SipMessageData statusMessageData, responsetype response)
at Microsoft.Rtc.Collaboration.Conferencing.StatusMessageReceivedWorkItem.Process()
at Microsoft.Rtc.Signaling.AsyncWorkitemQueue.ProcessItems()
at Microsoft.Rtc.Signaling.SerializationQueue`1.ResumeProcessing()
at Microsoft.Rtc.Signaling.SerializationQueue`1.ResumeProcessingCallback(Object state)
at Microsoft.Rtc.Signaling.QueueWorkItemState.ExecuteWrappedMethod(WaitCallback method, Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading._ThreadPoolWaitCallback.PerformWaitCallbackInternal(_ThreadPoolWaitCallback tpWaitCallBack)
at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback(Object state)
Cause: Administration issues.
Resolution:
Verify that Conferencing Attendant is installed in a supported topology and the dependant Front End servers are functioning correctly.
It happens only when user calls from outside of the office. The user enters the meeting ID, records the name and, after it says that the user is transferred to the conference, the error: "sorry i can't seem to connect you to your meeting right now".
I can see that user appearing in the meeting for a less than a second, and user is disconnected.
Anyone knows how to fix this?
Than
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