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

Repository

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

---

Thanks! We'll be in touch soon.