3.8  Message service 
Call-back request: 
This feature is used to leave the client a call-back request (terminal message LED activated): 
  Hotel (Hotel programmed key). 
  Select the key corresponding to the room or enter the number of the room. 
  Message. 
  Choice (consecutive presses). 
  Validate. 
Reading the type of message left: 
This feature is used to find out what type of message (voice or text message) has been left for the client: 
  Hotel (Hotel programmed key). 
  Select the key corresponding to the room or enter the number of the room. 
  Message. 
The screen displays one of the following labels: 
  Operator:   or not   
  Voice (Voice mail waiting):   Or not   
  Text (Text mail waiting):   Or not   
3.9  Public number (DDI) 
This feature is used to assign another DDI no. to the client: 
  Hotel (Hotel programmed key). 
  Select the key corresponding to the room or enter the number of the room. 
  PublicNr. 
  Choice (consecutive presses). 
  Validate. 
3.10 Barring 
This feature is used to modify call barring (international, national, local or prohibited calls) on the client's 
terminal: 
  Hotel (Hotel programmed key). 
  Select the key corresponding to the room or enter the number of the room. 
  Barring. 
  Choice (consecutive presses). 
  Validate.