diff --git a/classic/src/view/common/rtc/RtcController.js b/classic/src/view/common/rtc/RtcController.js
index 6ed26645..c8275366 100644
--- a/classic/src/view/common/rtc/RtcController.js
+++ b/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);
     }
 });
diff --git a/classic/src/view/common/rtc/composer/PhoneKeys.js b/classic/src/view/common/rtc/composer/PhoneKeys.js
index fa0d6da2..7e875c5d 100644
--- a/classic/src/view/common/rtc/composer/PhoneKeys.js
+++ b/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
         }