TT#22159 Call: Fix broken phone number input

Change-Id: I70f5de2f0d5ff84471e2fec2cf5ce93405e67917

classic/src/view/common/rtc/RtcController.js

@@ -516,5 +516,9 @@ Ext.define('NgcpCsc.view.common.rtc.RtcController', {
         } else {
             this.getViewModel().set('phoneKeyboardHidden', true);
         }
+    },
+
+    updateNumberToCall: function(number) {
+        this.getViewModel().set('numberToCall', this.getViewModel().get('numberToCall') + "" + number.text);
     }
 });

classic/src/view/common/rtc/composer/PhoneKeys.js

@@ -25,7 +25,7 @@ Ext.define('NgcpCsc.view.common.rtc.composer.PhoneKeys', {
             xtype: 'button',
             flex: 1,
             margin: '0 10 10 0',
-            handler: 'digitNumber',
+            handler: 'updateNumberToCall',
             cls: 'rtc-digit',
             maxWidth:90
         }