| Name | Description | 
| Green | The physical element is functioning as expected 
 | 
| Red | The physical element is failing. It is possible that some or all
  functionalities of this physical element is degraded or not working. 
 | 
| Unknown | The implementation cannot report on the current status of the
  physical element 
 | 
| Yellow | All functionality is available but some might be degraded. 
 |