diff --git a/Controller/OperatorStatusController.php b/Controller/OperatorStatusController.php
index 96aefbb..3f8b4e4 100644
--- a/Controller/OperatorStatusController.php
+++ b/Controller/OperatorStatusController.php
@@ -28,6 +28,7 @@
 use Mibew\Controller\AbstractController;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\HttpFoundation\JsonResponse;
 
 /**
 * Operator Status actions
@@ -37,30 +38,58 @@ class OperatorStatusController extends AbstractController
     /**
     * Returns true or false of whether an operator is online or not.
     *
-    * @param Request $request
+    * @param  Request  $request
     * @return Response Rendered page content
     */
-    public function indexAction(Request $request)
+    public function isOperatorOnlineAction(Request $request)
     {
-        $is_online = "true";
+        $is_online = false;
 
         $opcode = $request->attributes->get('opcode');
         $online_operators = get_online_operators();
-        
-        if ( count($online_operators) == 0 ) {
-            $is_online = "false";
-        } else if ( !empty($opcode) ) {
-            $is_online = "false";
-            foreach ($online_operators as $item) {
-                if ($item['code'] == $opcode) {
-                    $is_online = "true";
-                    break;
-                }
+        foreach ($online_operators as $item) {
+            if ($opcode == $item['code']) {
+                $is_online = true;
+                break;
             }
         }
 
-        $response = new Response($is_online);
-        $response->headers->set('Access-Control-Allow-Origin', '*');
+        $callback = $request->query->get('callback');
+        return $this->prepareResponse($is_online, $callback);
+    }
+
+    /**
+    * Returns true or false of whether an operator is online or not.
+    *
+    * @param  Request  $request
+    * @return Response Rendered page content
+    */
+    public function hasOnlineOperatorsAction(Request $request)
+    {
+        $is_online = has_online_operators();
+
+        $callback = $request->query->get('callback');
+        return $this->prepareResponse($is_online, $callback);
+    }
+
+    /**
+    * Returns prepared response: JSONP or plain text.
+    *
+    * @param  Boolean  $is_online
+    * @param  String   $callback
+    * @return Response Rendered page content
+    */
+    private function prepareResponse($is_online, $callback) {
+        $response = NULL;
+
+        if ( empty($callback) ) {
+            $response = new Response( $is_online ? 'true' : 'false' );
+            $response->headers->set('Access-Control-Allow-Origin', '*');
+        } else {
+            $response = new JsonResponse($is_online);
+            $response->setCallback($callback);
+        }
+
         return $response;
     }
 }
diff --git a/Plugin.php b/Plugin.php
index fa1a285..f092dbb 100644
--- a/Plugin.php
+++ b/Plugin.php
@@ -46,6 +46,6 @@ public function run()
      */
     public static function getVersion()
     {
-        return '0.2.0';
+        return '0.3.0';
     }
 }
diff --git a/README.md b/README.md
index 51af121..40e7f04 100644
--- a/README.md
+++ b/README.md
@@ -3,8 +3,28 @@ Plugin for Mibew, get statement based on the availability of operators.
 
 # Useage
 
-Request `<MIBEW-BASE-URL>/opstatus/<OPERATOR-CODE>`, your will get `true` when operator
-is online or `false` when operator is offline.
+1. Get any operators online status:
+ 
+    * request URL:`<MIBEW-BASE-URL>/opstatus`.
+    * return `true` when any operators is online and `false` when not.
+
+2. Get an operator online status by operator code:
+
+    * Request URL: `<MIBEW-BASE-URL>/opstatus/<OPERATOR-CODE>`.
+    * return `true` when operator is online or `false` when not.
+
+3. Use callback parameter:
+
+    Just inset `<script>` tag and set `src` to URL above and add `callback` parameter
+    
+    * `<MIBEW-BASE-URL>/opstatus?callback=<CALLBACK_FUNCTION>`
+    * `<MIBEW-BASE-URL>/opstatus/<OPERATOR-CODE>?callback=<CALLBACK_FUNCTION>`
+    
+    will return bellow and run `CALLBACK_FUNCTION` automatically.
+
+    ```javascript
+    /**/CALLBACK_FUNCTION(status);
+    ```
 
 # Install
 
diff --git a/routing.yml b/routing.yml
index 144cd09..8b831ab 100644
--- a/routing.yml
+++ b/routing.yml
@@ -1,4 +1,9 @@
-everyx_operator_status:
+everyx_operator_status_has_online_operators:
+  path: /opstatus
+  defaults:
+    _controller: Everyx\Mibew\Plugin\OperatorStatus\Controller\OperatorStatusController::hasOnlineOperatorsAction
+
+everyx_operator_status_is_operator_online:
   path: /opstatus/{opcode}
   defaults:
-    _controller: Everyx\Mibew\Plugin\OperatorStatus\Controller\OperatorStatusController::indexAction
+    _controller: Everyx\Mibew\Plugin\OperatorStatus\Controller\OperatorStatusController::isOperatorOnlineAction