Outbound Call Automation sound does not play during a call and recognize issue

[anasalhafez]

This issue is for a: (Outbound call no sound && recognize issue)

- [ ] bug report -> please search issues before submitting
- [ ] feature request
- [ ] documentation issue or request
- [ ] regression (a behavior that used to work and stopped in a new release)

Minimal steps to reproduce

1- The azure communication service is connected to multi cognitive service. 2- The mobile number is linked to the Azure Communication Service. 3- TTS cognitive service is used.

Any log messages given by the failure

No failure Message

Expected/desired behavior

The audio must play during the call.

OS and Version?

Windows 10.

Versions

.Net7.0

Mention any other details that might be useful

• After answer the call in the callbacks API :

        if (parsedEvent is CallConnected callConnected) {
            var welcomePlaySource = new TextSource(WelcomeMessage2)
            {
                VoiceName = "en-US-NancyNeural"
            };
            await callMedia.PlayToAllAsync(welcomePlaySource);
        }

• The sound not played and the callback event after PlayToAllAsync is PlayCompleted without any error.

• There is issue too appear when DMTF Recognize the event callback is RecognizeFailed and the error is silence time out after 10 seconds.

  
  var recognizeOptions = GetMediaRecognizeChoiceOptions(MainMenu, targetPhonenumber);
  await callMedia.StartRecognizingAsync(recognizeOptions);

CallMediaRecognizeChoiceOptions GetMediaRecognizeChoiceOptions(string content, string targetParticipant, string context = "") { var playSource = new TextSource(content) { VoiceName = SpeechToTextVoice };

var recognizeOptions =
    new CallMediaRecognizeChoiceOptions(targetParticipant: new PhoneNumberIdentifier(targetParticipant), GetChoices())
    {
        InterruptCallMediaOperation = false,
        InterruptPrompt = false,
        InitialSilenceTimeout = TimeSpan.FromSeconds(10),
        Prompt = playSource,
        OperationContext = context
    };

return recognizeOptions;

}

List GetChoices() { return new List { new RecognitionChoice("Confirm", new List { "Confirm", "First", "One" }) { Tone = DtmfTone.One }, new RecognitionChoice("Cancel", new List { "Cancel", "Second", "Two" }) { Tone = DtmfTone.Two } }; }

### Repository
communication-services-dotnet-quickstarts-main/CallAutomation_OutboundCalling.

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