Merge pull request #373 from Resgrid/develop

RE1-T115 Outbound TTS work

Author: ucswift

Providers/Resgrid.Providers.Number/OutboundVoiceProvider.cs

@@ -37,6 +37,7 @@ public async Task<bool> CommunicateCallAsync(string phoneNumber, UserProfile pro
 					var options = new CreateCallOptions(new PhoneNumber(profile.GetPhoneNumber()), new PhoneNumber(number));
 					options.Url = new Uri(string.Format(Config.NumberProviderConfig.TwilioVoiceCallApiUrl, profile.UserId, call.CallId));
 					options.Method = "GET";
+					options.MachineDetection = "Enable";
 					//options.IfMachine = "Continue";
 
 					var phoneCall = await CallResource.CreateAsync(options);
@@ -51,6 +52,7 @@ public async Task<bool> CommunicateCallAsync(string phoneNumber, UserProfile pro
 					var options = new CreateCallOptions(new PhoneNumber(profile.GetHomePhoneNumber()), new PhoneNumber(number));
 					options.Url = new Uri(string.Format(Config.NumberProviderConfig.TwilioVoiceCallApiUrl, profile.UserId, call.CallId));
 					options.Method = "GET";
+					options.MachineDetection = "Enable";
 					//options.IfMachine = "Continue";
 
 					var phoneCall = await CallResource.CreateAsync(options);

Web/Resgrid.Web.Services/Controllers/TwilioController.cs

@@ -492,14 +492,17 @@ public async Task<ActionResult> VoiceCall(string userId, int callId, [FromQuery]
 				return CreateVoiceContentResult(response);
 			}
 
+			// For outbound calls, allow a brief pause for the audio bridge to
+			// stabilize after the callee answers before attempting playback.
+			response.Pause(length: 1);
+
 			// For dispatch playback, attempt to fetch (or pre-warm) the TTS URL
 			// within a short timeout so that the TwiML response is returned before
 			// Twilio's 15-second webhook timeout expires. If the dispatch text is
 			// not yet cached, we play a brief "please wait" prompt and redirect
 			// back to this endpoint, giving the TTS service time to complete
 			// generation in the background.
 			var dispatchReady = await TryAppendDispatchPlaybackAsync(response, call);
-
 			if (!dispatchReady)
 			{
 				// Parse and increment the retry counter from the incoming request.