diff --git a/lam/lib/modules/asteriskAccount.inc b/lam/lib/modules/asteriskAccount.inc
index e9aa341a..4964b194 100644
--- a/lam/lib/modules/asteriskAccount.inc
+++ b/lam/lib/modules/asteriskAccount.inc
@@ -244,6 +244,24 @@ class asteriskAccount extends baseModule implements passwordService {
 		return $errors;
 	}
 
+	/**
+	* Returns a list of modifications which have to be made to the LDAP account.
+	*
+	* @return array list of modifications
+	* <br>This function returns an array with 3 entries:
+	* <br>array( DN1 ('add' => array($attr), 'remove' => array($attr), 'modify' => array($attr)), DN2 .... )
+	* <br>DN is the DN to change. It may be possible to change several DNs (e.g. create a new user and add him to some groups via attribute memberUid)
+	* <br>"add" are attributes which have to be added to LDAP entry
+	* <br>"remove" are attributes which have to be removed from LDAP entry
+	* <br>"modify" are attributes which have to been modified in LDAP entry
+	*/
+	function save_attributes() {
+		if (!in_array('AsteriskSIPUser', $this->attributes['objectClass'])) {
+			return array();
+		}
+		return $this->getAccountContainer()->save_module_attributes($this->attributes, $this->orig);
+	}
+
 	/**
 	* Returns a list of PDF entries
 	*/