UI-2499: handle 404 on virtual receptionist

i18n/en-US.json

@@ -918,7 +918,11 @@
 			"info": "Customize your conference greeting message using our Text-to-Speech feature. Simply type your greeting message in the input field below.",
 			"mainConfMissing": "Your Main Conference could not be found.",
 			"tooltip": "Your Main Conference has a custom greeting message."
-		}
+		},
+
+		"__comment": "UI-2499: Handle case where greeting has been deleted",
+		"__version": "4.0",
+		"greetingMissing": "The greeting that was configured on this Virtual Receptionist is missing. Please setup a new greeting."
 	},
 
 	"callLogs": {

submodules/strategy/strategy.js

@@ -2109,11 +2109,21 @@ define(function(require){
 								resource: 'media.get',
 								data: {
 									accountId: self.accountId,
-									mediaId: menu.media.greeting
+									mediaId: menu.media.greeting,
+									generateError: false
 								},
 								success: function(data, status) {
 									greeting = data.data;
 									showPopup();
+								},
+								error: function(data, status, globalHandler) {
+									if(data && data.error === '404') {
+										showPopup();
+										toastr.warning(self.i18n.active().strategy.greetingMissing);
+									}
+									else {
+										globalHandler(data, { generateError: true });
+									}
 								}
 							});
 						} else {