Added dtmf data in streaming data parser and added unit test.

sdk/communication/Azure.Communication.CallAutomation/api/Azure.Communication.CallAutomation.net8.0.cs

@@ -703,6 +703,13 @@ public void AddSipUui(string value) { }
         public void AddSipX(string key, string value) { }
         public void AddVoip(string key, string value) { }
     }
+    public partial class DtmfData : Azure.Communication.CallAutomation.StreamingData
+    {
+        public DtmfData(string data) { }
+        public string Data { get { throw null; } }
+        public Azure.Communication.CommunicationIdentifier Participant { get { throw null; } }
+        public System.DateTimeOffset Timestamp { get { throw null; } }
+    }
     public partial class DtmfResult : Azure.Communication.CallAutomation.RecognizeResult
     {
         internal DtmfResult() { }
@@ -1445,6 +1452,7 @@ public enum StreamingDataKind
         AudioMetadata = 1,
         TranscriptionData = 2,
         TranscriptionMetadata = 3,
+        DtmfData = 4,
     }
     [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
     public readonly partial struct StreamingTransport : System.IEquatable<Azure.Communication.CallAutomation.StreamingTransport>
@@ -1499,6 +1507,7 @@ internal TranscriptionMetadata() { }
         public string CallConnectionId { get { throw null; } }
         public string CorrelationId { get { throw null; } }
         public string Locale { get { throw null; } }
+        public string SpeechRecognitionModelEndpointId { get { throw null; } }
         public string TranscriptionSubscriptionId { get { throw null; } }
     }
     public partial class TranscriptionOptions

sdk/communication/Azure.Communication.CallAutomation/api/Azure.Communication.CallAutomation.netstandard2.0.cs

@@ -702,6 +702,13 @@ public void AddSipUui(string value) { }
         public void AddSipX(string key, string value) { }
         public void AddVoip(string key, string value) { }
     }
+    public partial class DtmfData : Azure.Communication.CallAutomation.StreamingData
+    {
+        public DtmfData(string data) { }
+        public string Data { get { throw null; } }
+        public Azure.Communication.CommunicationIdentifier Participant { get { throw null; } }
+        public System.DateTimeOffset Timestamp { get { throw null; } }
+    }
     public partial class DtmfResult : Azure.Communication.CallAutomation.RecognizeResult
     {
         internal DtmfResult() { }
@@ -1444,6 +1451,7 @@ public enum StreamingDataKind
         AudioMetadata = 1,
         TranscriptionData = 2,
         TranscriptionMetadata = 3,
+        DtmfData = 4,
     }
     [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
     public readonly partial struct StreamingTransport : System.IEquatable<Azure.Communication.CallAutomation.StreamingTransport>
@@ -1498,6 +1506,7 @@ internal TranscriptionMetadata() { }
         public string CallConnectionId { get { throw null; } }
         public string CorrelationId { get { throw null; } }
         public string Locale { get { throw null; } }
+        public string SpeechRecognitionModelEndpointId { get { throw null; } }
         public string TranscriptionSubscriptionId { get { throw null; } }
     }
     public partial class TranscriptionOptions

sdk/communication/Azure.Communication.CallAutomation/src/Models/Streaming/Media/DtmfData.cs

@@ -0,0 +1,49 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+using System;
+
+namespace Azure.Communication.CallAutomation
+{
+    /// <summary>
+    /// Streaming dtmf data.
+    /// </summary>
+    public class DtmfData : StreamingData
+    {
+        /// <summary>
+        /// The dtmf data, encoded as a base64 string
+        /// </summary>
+        /// <param name="data"></param>
+        public DtmfData(string data)
+        {
+            Data = data;
+        }
+
+        internal DtmfData(string data, DateTime timestamp, string participantId)
+        {
+            Data = !string.IsNullOrWhiteSpace(data) ? data : default;
+            Timestamp = timestamp;
+            if (participantId != null)
+            {
+                Participant = CommunicationIdentifier.FromRawId(participantId);
+            }
+        }
+
+        /// <summary>
+        /// The dtmf data in base64 string.
+        /// </summary>
+        public string Data { get; }
+
+        /// <summary>
+        /// The timestamp indicating when the media content was received by the bot,
+        /// or if the bot is sending media, the timestamp of when the media was sourced.
+        /// The format is ISO 8601 (yyyy-mm-ddThh:mm).
+        /// </summary>
+        public DateTimeOffset Timestamp { get; }
+
+        /// <summary>
+        /// The raw ID of the participant.
+        /// </summary>
+        public CommunicationIdentifier Participant { get; }
+    }
+}

sdk/communication/Azure.Communication.CallAutomation/src/Models/Streaming/Media/DtmfDataInternal.cs

@@ -0,0 +1,32 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+using System;
+using System.Text.Json.Serialization;
+
+namespace Azure.Communication.CallAutomation
+{
+    /// <summary>
+    /// Streaming dtmf.
+    /// </summary>
+    internal class DtmfDataInternal
+    {
+        /// <summary>
+        /// The dtmf data in base64 string.
+        /// </summary>
+        [JsonPropertyName("data")]
+        public string Data { get; set; }
+
+        /// <summary>
+        /// The timestamp of thwn the media was sourced.
+        /// </summary>
+        [JsonPropertyName("timestamp")]
+        public DateTime Timestamp { get; set; }
+
+        /// <summary>
+        /// Participant ID.
+        /// </summary>
+        [JsonPropertyName("participantRawID")]
+        public string ParticipantRawId { get; set; }
+    }
+}

sdk/communication/Azure.Communication.CallAutomation/src/Models/Streaming/StreamingData.cs

@@ -64,9 +64,15 @@ private static StreamingData ParseStreamingData(string base64Data)
 
                 #endregion
 
+                #region Dtmf
+                case "DtmfData":
+                    DtmfDataInternal dtmfInternal = JsonSerializer.Deserialize<DtmfDataInternal>(streamingData.GetProperty("dtmfData").ToString());
+                    return new DtmfData(dtmfInternal.Data, dtmfInternal.Timestamp, dtmfInternal.ParticipantRawId);
+                #endregion
+
                 #region Transcription
                 case "TranscriptionMetadata":
-                    var transcriptionMetadataInternal = JsonSerializer.Deserialize<TranscriptionMetadataInternal>(streamingData.GetProperty("transcriptionMetadata").ToString());
+                    TranscriptionMetadataInternal transcriptionMetadataInternal = JsonSerializer.Deserialize<TranscriptionMetadataInternal>(streamingData.GetProperty("transcriptionMetadata").ToString());
                     return new TranscriptionMetadata(transcriptionMetadataInternal);
 
                 case "TranscriptionData":

sdk/communication/Azure.Communication.CallAutomation/src/Models/Streaming/StreamingDataKind.cs

@@ -26,6 +26,10 @@ public enum StreamingDataKind
         /// <summary>
         /// Transcription metadata type
         /// </summary>
-        TranscriptionMetadata
+        TranscriptionMetadata,
+        /// <summary>
+        /// Dtmf data type
+        /// </summary>
+        DtmfData,
     }
 }

sdk/communication/Azure.Communication.CallAutomation/src/Models/Streaming/Transcription/TranscriptionMetadata.cs

@@ -16,6 +16,7 @@ internal TranscriptionMetadata(TranscriptionMetadataInternal transcriptionMetada
             Locale = transcriptionMetadataInternal.Locale;
             CallConnectionId = transcriptionMetadataInternal.CallConnectionId;
             CorrelationId = transcriptionMetadataInternal.CorrelationId;
+            SpeechRecognitionModelEndpointId = transcriptionMetadataInternal.SpeechRecognitionModelEndpointId;
         }
         /// <summary>
         /// Transcription Subscription Id.
@@ -35,6 +36,11 @@ internal TranscriptionMetadata(TranscriptionMetadataInternal transcriptionMetada
         /// <summary>
         /// correlation Id.
         /// </summary>
-        public string CorrelationId { get;  }
+        public string CorrelationId { get; }
+
+        /// <summary>
+        /// The custom speech recognition model endpoint id
+        /// </summary>
+        public string SpeechRecognitionModelEndpointId { get; }
     }
 }

sdk/communication/Azure.Communication.CallAutomation/src/Models/Streaming/Transcription/TranscriptionMetadataInternal.cs

@@ -33,5 +33,11 @@ internal class TranscriptionMetadataInternal
         /// </summary>
         [JsonPropertyName("correlationId")]
         public string CorrelationId { get;  set; }
+
+        /// <summary>
+        /// The custom speech recognition model endpoint id
+        /// </summary>
+        [JsonPropertyName("speechRecognitionModelEndpointId")]
+        public string SpeechRecognitionModelEndpointId { get; set; }
     }
 }

sdk/communication/Azure.Communication.CallAutomation/tests/Streaming/StreamingDataParserTests.cs

@@ -64,13 +64,31 @@ private static void ValidateAudioData(AudioData streamingAudio)
             Assert.AreEqual("participantId", streamingAudio.Participant.RawId);
             Assert.IsFalse(streamingAudio.IsSilent);
         }
-        private static void ValidateAudioDataNoParticipant(AudioData streamingAudio)
+        #endregion
+
+        #region DTMF
+        [Test]
+        public void ParseDtmfData_Test()
         {
-            Assert.IsNotNull(streamingAudio);
-            Assert.AreEqual(Convert.FromBase64String("AQIDBAU="), streamingAudio.Data);
-            Assert.AreEqual(2022, streamingAudio.Timestamp.Year);
-            Assert.IsNull(streamingAudio.Participant);
-            Assert.IsFalse(streamingAudio.IsSilent);
+            string dtmfJson = "{"
+                + "\"kind\": \"DtmfData\","
+                + "\"dtmfData\": {"
+                + "\"data\": \"5\","
+                + "\"timestamp\": \"2022-08-23T11:48:05Z\","
+                + "\"participantRawID\": \"participantId\""
+                + "}"
+                + "}";
+
+            DtmfData streamingDtmf = (DtmfData)StreamingData.Parse(dtmfJson);
+            ValidateDtmfData(streamingDtmf);
+        }
+        private static void ValidateDtmfData(DtmfData streamingDtmf)
+        {
+            Assert.IsNotNull(streamingDtmf);
+            Assert.AreEqual("5", streamingDtmf.Data);
+            Assert.AreEqual(2022, streamingDtmf.Timestamp.Year);
+            Assert.IsTrue(streamingDtmf.Participant is CommunicationIdentifier);
+            Assert.AreEqual("participantId", streamingDtmf.Participant.RawId);
         }
         #endregion
 
@@ -87,7 +105,8 @@ public void ParseTranscriptionMetadata_Test()
                     "\"subscriptionId\":\"subscriptionId\"," +
                     "\"locale\":\"en-US\"," +
                     "\"callConnectionId\":\"callConnectionId\"," +
-                    "\"correlationId\":\"correlationId\"" +
+                    "\"correlationId\":\"correlationId\"," +
+                    "\"speechRecognitionModelEndpointId\":\"speechRecognitionModelEndpointId\"" +
                 "}" +
             "}";
 
@@ -153,6 +172,7 @@ private static void ValidateTranscriptionMetadata(TranscriptionMetadata transcri
             Assert.AreEqual("en-US", transcriptionMetadata.Locale);
             Assert.AreEqual("callConnectionId", transcriptionMetadata.CallConnectionId);
             Assert.AreEqual("correlationId", transcriptionMetadata.CorrelationId);
+            Assert.AreEqual("speechRecognitionModelEndpointId", transcriptionMetadata.SpeechRecognitionModelEndpointId);
         }
 
         private static void ValidateTranscriptionDataWithWordsNull(TranscriptionData transcription)