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Core/Resgrid.Config/SystemBehaviorConfig.cs

@@ -112,6 +112,14 @@ public static class SystemBehaviorConfig
 		/// </summary>
 		public static string ApiTokenEncryptionPassphrase = "";
 
+		/// <summary>
+		/// Shared key trusted monitoring must present (X-Resgrid-Health-Key header) to call
+		/// the deep /health/full endpoint, which runs real SQL/Redis/TTS probes and returns
+		/// dependency detail. Empty (the default) disables /health/full entirely; the
+		/// shallow /health liveness endpoint is unaffected.
+		/// </summary>
+		public static string FullHealthCheckKey = "";
+
 		/// <summary>
 		/// The length the API token will be valid for once a user logs into the app
 		/// </summary>

Core/Resgrid.Config/TtsConfig.cs

@@ -24,6 +24,14 @@ public static class TtsConfig
 		public static int S3PresignedUrlExpiryMinutes = 60;
 		public static string S3PublicBaseUrl = "";
 
+		/// <summary>
+		/// When true, voice webhooks degrade to Twilio's native &lt;Say&gt; verb (billed per
+		/// use by Twilio) if TTS audio can't be produced in time or generation fails.
+		/// Default off: an unavailable prompt is skipped so a TTS outage surfaces as
+		/// missing audio in the call — and in the logs — rather than as extra spend.
+		/// </summary>
+		public static bool TwilioSayFallbackEnabled = false;
+
 		public static string DefaultVoice = "en-us+klatt4";
 		public static int DefaultSpeed = 150;
 		public static int MaxConcurrentGenerations = 4;
@@ -70,7 +78,8 @@ public static class TtsConfig
 			"No status selection made. Returning to the main menu.",
 			"Invalid staffing selection. Returning to the main menu.",
 			"No staffing selection made. Returning to the main menu.",
-			"Thank you. Your response has been recorded."
+			"Thank you. Your response has been recorded.",
+			"Please wait while we prepare your dispatch information."
 		});
 
 		public static int RateLimitPermitLimit = 600;

Core/Resgrid.Services/DepartmentsService.cs

@@ -211,6 +211,9 @@ public void InvalidateDepartmentUserInCache(string userId, IdentityUser user = n
 				await _departmentSettingsService.SaveOrUpdateSettingAsync(d.DepartmentId, dispatchCode, DepartmentSettingTypes.InternalDispatchEmail, cancellationToken);
 			}
 
+			// New departments get modern notification sounds enabled by default
+			await _departmentSettingsService.SaveOrUpdateSettingAsync(d.DepartmentId, true.ToString(), DepartmentSettingTypes.EnableModernNotifications, cancellationToken);
+
 			return d;
 		}
 

Providers/Resgrid.Providers.Number/OutboundVoiceProvider.cs

@@ -37,8 +37,12 @@ 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";
+					// No machine detection: nothing consumes AnsweredBy (no AMD status
+					// callback endpoint exists, IfMachine handling was never enabled), so
+					// AMD would only add Twilio's per-call detection fee — and, in its
+					// synchronous form, a multi-second answer delay. The webhook fires the
+					// moment the call is answered and dispatch playback starts immediately;
+					// a voicemail simply records the dispatch prompt.
 
 					var phoneCall = await CallResource.CreateAsync(options);
 					return true;
@@ -52,8 +56,7 @@ 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";
+					// No machine detection — see the mobile branch above.
 
 					var phoneCall = await CallResource.CreateAsync(options);
 					return true;