diff --git a/backend/lib/Util/JSON.php b/backend/lib/Util/JSON.php
index da287dd..38703ac 100644
--- a/backend/lib/Util/JSON.php
+++ b/backend/lib/Util/JSON.php
@@ -75,12 +75,12 @@ class JSON extends \ArrayObject {
 	}
 
 	/**
-	 * Formats json with indents and new lines
+	 * Formats JSON with indents and new lines
 	 *
 	 * @param string $json
 	 * @param string $indent
 	 * @param string $newLine
-	 * @return string the formatted json
+	 * @return string the formatted JSON
 	 */
 	protected static function format($json, $indent = "\t", $newLine = "\n") {
 		$formatted = '';
diff --git a/backend/lib/View/JSON.php b/backend/lib/View/JSON.php
index 47fc786..4d34745 100644
--- a/backend/lib/View/JSON.php
+++ b/backend/lib/View/JSON.php
@@ -34,24 +34,29 @@ use Volkszaehler\Model;
  * @author Steffen Vogel <info@steffenvogel.de>
  */
 class JSON extends View {
+	/**
+	 * @var array holds the JSON data in an array
+	 */
 	protected $json;
 
+	/**
+	 * @var string padding function name or NULL if disabled
+	 */
 	protected $padding = FALSE;
 
 	/**
 	 * constructor
 	 */
-	public function __construct(HTTP\Request $request, HTTP\Response $response) {
+	public function __construct(HTTP\Request $request, HTTP\Response $response, $padding = FALSE) {
 		parent::__construct($request, $response);
 
 		$this->json = new Util\JSON();
-
 		$this->json['source'] = 'volkszaehler.org';
 		$this->json['version'] = VZ_VERSION;
 
-		$this->response->setHeader('Content-type', 'application/json');
+		$this->setPadding($padding);
 
-		$this->padding = $this->request->getParameter('padding');
+		$this->response->setHeader('Content-type', 'application/json');
 	}
 
 	public function addChannel(Model\Channel $channel, array $data = NULL) {
diff --git a/share/properties.json b/share/properties.json
index 3992ca2..8bdcb0c 100644
--- a/share/properties.json
+++ b/share/properties.json
@@ -283,5 +283,19 @@
 		"name" : "photo:url",
 		"type" : "string",
 		"pattern" : ""				// TODO add pattern
+	},
+	{
+		"name" : "cuuid",
+		"type" : "string",
+		"max" : 37
+	},
+	{
+		"name" : "port",
+		"type" : "string",
+		"max" : 6
+	},
+	{
+		"name" : "active",
+		"type" : "boolean"
 	}
 ]
diff --git a/share/tests/ajax.php b/share/tests/ajax.php
index c077f12..884cad7 100644
--- a/share/tests/ajax.php
+++ b/share/tests/ajax.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * Simple test for jquery, ajax and json padding
+ * Simple test for jquery, ajax and JSON padding
  *
  * @package tests
  * @copyright Copyright (c) 2010, The volkszaehler.org project