| Door number | Internal number of the door (for exchange line request type Direct exchange line phone: with preceding **) | 
| R | Query key or Flash key | 
| Additional information | Authorisation required | 
| R | Query key or Flash key | 
| Door number | Internal number of the group or subscriber (for exchange line request type Direct exchange line phone: with preceding **) or External number (for exchange line request type Internal phone: with preceding exchange line access number) or Short-code dialling number (for exchange line request type Direct exchange line phone: with preceding **) |